YES Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-21 23:18:26,153 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-21 23:18:26,155 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-21 23:18:26,166 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-21 23:18:26,166 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-21 23:18:26,167 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-21 23:18:26,168 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-21 23:18:26,170 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-21 23:18:26,171 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-21 23:18:26,172 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-21 23:18:26,173 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-21 23:18:26,173 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-21 23:18:26,174 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-21 23:18:26,175 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-21 23:18:26,176 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-21 23:18:26,177 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-21 23:18:26,177 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-21 23:18:26,179 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-21 23:18:26,181 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-21 23:18:26,183 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-21 23:18:26,184 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-21 23:18:26,185 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-21 23:18:26,187 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-21 23:18:26,187 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-21 23:18:26,187 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-21 23:18:26,188 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-21 23:18:26,188 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-21 23:18:26,189 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-21 23:18:26,189 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-21 23:18:26,190 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-21 23:18:26,191 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-21 23:18:26,191 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-21 23:18:26,192 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-21 23:18:26,193 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-21 23:18:26,193 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-21 23:18:26,193 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-21 23:18:26,194 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-21 23:18:26,195 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-21 23:18:26,195 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-21 23:18:26,195 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-21 23:18:26,210 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-21 23:18:26,210 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-21 23:18:26,211 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-21 23:18:26,211 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-21 23:18:26,211 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-21 23:18:26,211 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-21 23:18:26,212 INFO L133 SettingsManager]: * Use SBE=true [2020-06-21 23:18:26,212 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-21 23:18:26,212 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-21 23:18:26,212 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-21 23:18:26,212 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-21 23:18:26,212 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-21 23:18:26,213 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-21 23:18:26,213 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-21 23:18:26,213 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:26,213 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-21 23:18:26,213 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-21 23:18:26,213 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-21 23:18:26,213 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-21 23:18:26,214 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-21 23:18:26,214 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-21 23:18:26,214 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-21 23:18:26,214 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-21 23:18:26,214 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-21 23:18:26,214 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 23:18:26,215 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-21 23:18:26,215 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-21 23:18:26,215 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-21 23:18:26,215 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-21 23:18:26,240 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-21 23:18:26,254 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-21 23:18:26,257 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-21 23:18:26,259 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-21 23:18:26,259 INFO L276 PluginConnector]: CDTParser initialized [2020-06-21 23:18:26,260 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-21 23:18:26,354 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/66c69874eba349d78c8007cd2b3c3fa3/FLAGb31d96feb !SESSION 2020-06-21 23:18:23.823 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.cdt.core 1 0 2020-06-21 23:18:26.623 !MESSAGE Indexed 'FLAGb31d96feb' (0 sources, 0 headers) in 0.006 sec: 0 declarations; 0 references; 0 unresolved inclusions; 0 syntax errors; 0 unresolved names (0%) [2020-06-21 23:18:26,706 INFO L307 CDTParser]: Found 1 translation units. [2020-06-21 23:18:26,707 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-21 23:18:26,714 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/66c69874eba349d78c8007cd2b3c3fa3/FLAGb31d96feb [2020-06-21 23:18:27,157 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/66c69874eba349d78c8007cd2b3c3fa3 [2020-06-21 23:18:27,168 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-21 23:18:27,170 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-21 23:18:27,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-21 23:18:27,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-21 23:18:27,175 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-21 23:18:27,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 11:18:27" (1/1) ... [2020-06-21 23:18:27,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a2acb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:27, skipping insertion in model container [2020-06-21 23:18:27,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 11:18:27" (1/1) ... [2020-06-21 23:18:27,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-21 23:18:27,203 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-21 23:18:27,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 23:18:27,359 INFO L191 MainTranslator]: Completed pre-run [2020-06-21 23:18:27,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 23:18:27,441 INFO L195 MainTranslator]: Completed translation [2020-06-21 23:18:27,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:27 WrapperNode [2020-06-21 23:18:27,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-21 23:18:27,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-21 23:18:27,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-21 23:18:27,443 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-21 23:18:27,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:27" (1/1) ... [2020-06-21 23:18:27,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:27" (1/1) ... [2020-06-21 23:18:27,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-21 23:18:27,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-21 23:18:27,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-21 23:18:27,476 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-21 23:18:27,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:27" (1/1) ... [2020-06-21 23:18:27,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:27" (1/1) ... [2020-06-21 23:18:27,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:27" (1/1) ... [2020-06-21 23:18:27,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:27" (1/1) ... [2020-06-21 23:18:27,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:27" (1/1) ... [2020-06-21 23:18:27,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:27" (1/1) ... [2020-06-21 23:18:27,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:27" (1/1) ... [2020-06-21 23:18:27,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-21 23:18:27,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-21 23:18:27,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-21 23:18:27,495 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-21 23:18:27,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:27" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 23:18:27,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-21 23:18:27,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-21 23:18:27,680 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-21 23:18:27,680 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-21 23:18:27,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:18:27 BoogieIcfgContainer [2020-06-21 23:18:27,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-21 23:18:27,682 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-21 23:18:27,682 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-21 23:18:27,684 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-21 23:18:27,685 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:18:27" (1/1) ... [2020-06-21 23:18:27,699 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-06-21 23:18:27,700 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-21 23:18:27,701 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-21 23:18:27,702 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-21 23:18:27,702 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-21 23:18:27,704 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-21 23:18:27,705 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-21 23:18:27,705 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-21 23:18:27,720 INFO L185 BlockEncoder]: Using Use SBE [2020-06-21 23:18:27,735 INFO L200 BlockEncoder]: SBE split 1 edges [2020-06-21 23:18:27,739 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-06-21 23:18:27,741 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:18:27,752 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-06-21 23:18:27,754 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-21 23:18:27,755 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-21 23:18:27,756 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:18:27,756 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-21 23:18:27,756 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-21 23:18:27,756 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 6 edges [2020-06-21 23:18:27,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:18:27 BasicIcfg [2020-06-21 23:18:27,757 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-21 23:18:27,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-21 23:18:27,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-21 23:18:27,761 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-21 23:18:27,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 11:18:27" (1/4) ... [2020-06-21 23:18:27,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad326be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 11:18:27, skipping insertion in model container [2020-06-21 23:18:27,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:27" (2/4) ... [2020-06-21 23:18:27,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad326be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 11:18:27, skipping insertion in model container [2020-06-21 23:18:27,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:18:27" (3/4) ... [2020-06-21 23:18:27,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad326be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:18:27, skipping insertion in model container [2020-06-21 23:18:27,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:18:27" (4/4) ... [2020-06-21 23:18:27,765 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 23:18:27,775 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-21 23:18:27,783 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-21 23:18:27,799 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-21 23:18:27,827 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 23:18:27,828 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-21 23:18:27,828 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-21 23:18:27,828 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 23:18:27,829 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 23:18:27,829 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 23:18:27,829 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-21 23:18:27,829 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 23:18:27,829 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-21 23:18:27,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-06-21 23:18:27,849 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-21 23:18:27,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-06-21 23:18:27,899 INFO L448 ceAbstractionStarter]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-06-21 23:18:27,900 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-21 23:18:27,900 INFO L451 ceAbstractionStarter]: At program point L15-2(lines 15 22) the Hoare annotation is: true [2020-06-21 23:18:27,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:18:27 BasicIcfg [2020-06-21 23:18:27,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-21 23:18:27,909 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-21 23:18:27,909 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-21 23:18:27,912 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-21 23:18:27,913 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:18:27,913 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.06 11:18:27" (1/5) ... [2020-06-21 23:18:27,914 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34ff082b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 11:18:27, skipping insertion in model container [2020-06-21 23:18:27,914 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:18:27,914 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:27" (2/5) ... [2020-06-21 23:18:27,914 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34ff082b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 11:18:27, skipping insertion in model container [2020-06-21 23:18:27,914 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:18:27,915 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:18:27" (3/5) ... [2020-06-21 23:18:27,915 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34ff082b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:18:27, skipping insertion in model container [2020-06-21 23:18:27,915 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:18:27,915 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:18:27" (4/5) ... [2020-06-21 23:18:27,916 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34ff082b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:18:27, skipping insertion in model container [2020-06-21 23:18:27,916 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:18:27,916 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:18:27" (5/5) ... [2020-06-21 23:18:27,917 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 23:18:27,943 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 23:18:27,944 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-21 23:18:27,944 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-21 23:18:27,944 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 23:18:27,944 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 23:18:27,944 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 23:18:27,945 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-21 23:18:27,945 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 23:18:27,945 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-21 23:18:27,948 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-21 23:18:27,967 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-21 23:18:27,967 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:18:27,967 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:18:27,974 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 23:18:27,974 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-21 23:18:27,974 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-21 23:18:27,975 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-21 23:18:27,975 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-21 23:18:27,975 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:18:27,976 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:18:27,976 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 23:18:27,976 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-21 23:18:27,981 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [23] ULTIMATE.startENTRY-->L15-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~b~0, ULTIMATE.start_main_~x~0] 5#L15-2true [2020-06-21 23:18:27,982 INFO L796 eck$LassoCheckResult]: Loop: 5#L15-2true [30] L15-2-->L16: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 4#L16true [33] L16-->L15-2: Formula: (and (> 0 v_ULTIMATE.start_main_~b~0_7) (= 0 v_ULTIMATE.start_main_~b~0_5) (> 0 v_ULTIMATE.start_main_~x~0_4) (= v_ULTIMATE.start_main_~x~0_4 (+ v_ULTIMATE.start_main_~x~0_5 (- 1)))) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_4, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~b~0] 5#L15-2true [2020-06-21 23:18:27,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:27,988 INFO L82 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 1 times [2020-06-21 23:18:27,990 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:27,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:28,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:28,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:18:28,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:28,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:28,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1924, now seen corresponding path program 1 times [2020-06-21 23:18:28,051 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:28,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:28,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:28,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:18:28,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:28,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:28,072 INFO L82 PathProgramCache]: Analyzing trace with hash 52857, now seen corresponding path program 1 times [2020-06-21 23:18:28,072 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:28,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:28,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:28,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:18:28,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:28,130 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:18:28,131 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:18:28,131 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:18:28,132 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:18:28,132 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:18:28,132 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:28,132 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:18:28,132 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:18:28,132 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-21 23:18:28,133 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:18:28,133 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:18:28,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:28,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:28,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:28,230 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:18:28,231 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:28,238 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:18:28,238 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:28,271 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:18:28,271 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:18:28,307 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 23:18:28,309 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:18:28,309 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:18:28,310 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:18:28,310 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:18:28,310 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 23:18:28,310 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 23:18:28,310 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:18:28,310 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:18:28,310 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-21 23:18:28,311 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:18:28,311 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:18:28,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:28,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:28,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:28,396 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:18:28,402 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 23:18:28,404 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-21 23:18:28,405 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:18:28,405 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:18:28,406 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:18:28,406 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:18:28,406 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:18:28,409 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:18:28,409 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:18:28,413 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:18:28,414 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-21 23:18:28,414 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:18:28,414 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:18:28,415 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:18:28,415 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:18:28,415 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:18:28,416 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:18:28,416 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:18:28,422 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 23:18:28,428 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 23:18:28,428 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-21 23:18:28,430 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 23:18:28,431 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 23:18:28,431 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 23:18:28,431 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~b~0) = -1*ULTIMATE.start_main_~b~0 Supporting invariants [] [2020-06-21 23:18:28,433 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 23:18:28,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:18:28,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-21 23:18:28,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:18:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:18:28,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 23:18:28,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:18:28,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:18:28,501 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-06-21 23:18:28,506 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-06-21 23:18:28,507 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-06-21 23:18:28,543 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 7 states and 14 transitions. Complement of second has 4 states. [2020-06-21 23:18:28,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-21 23:18:28,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-21 23:18:28,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-06-21 23:18:28,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-21 23:18:28,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:28,549 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-21 23:18:28,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:28,550 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 1 letters. Loop has 4 letters. [2020-06-21 23:18:28,550 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:28,555 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 14 transitions. [2020-06-21 23:18:28,556 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-21 23:18:28,560 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 14 transitions. [2020-06-21 23:18:28,561 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-06-21 23:18:28,561 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-06-21 23:18:28,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 14 transitions. [2020-06-21 23:18:28,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 23:18:28,562 INFO L706 BuchiCegarLoop]: Abstraction has 7 states and 14 transitions. [2020-06-21 23:18:28,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 14 transitions. [2020-06-21 23:18:28,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-06-21 23:18:28,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-06-21 23:18:28,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 14 transitions. [2020-06-21 23:18:28,591 INFO L729 BuchiCegarLoop]: Abstraction has 7 states and 14 transitions. [2020-06-21 23:18:28,591 INFO L609 BuchiCegarLoop]: Abstraction has 7 states and 14 transitions. [2020-06-21 23:18:28,591 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-21 23:18:28,592 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 14 transitions. [2020-06-21 23:18:28,592 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-21 23:18:28,592 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:18:28,592 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:18:28,593 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-06-21 23:18:28,593 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-21 23:18:28,593 INFO L794 eck$LassoCheckResult]: Stem: 45#ULTIMATE.startENTRY [23] ULTIMATE.startENTRY-->L15-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~b~0, ULTIMATE.start_main_~x~0] 46#L15-2 [30] L15-2-->L16: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 41#L16 [36] L16-->L15-2: Formula: (and (= 0 v_ULTIMATE.start_main_~b~0_5) (< 0 v_ULTIMATE.start_main_~b~0_7) (> 0 v_ULTIMATE.start_main_~x~0_4) (= v_ULTIMATE.start_main_~x~0_4 (+ v_ULTIMATE.start_main_~x~0_5 (- 1)))) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_4, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~b~0] 42#L15-2 [2020-06-21 23:18:28,594 INFO L796 eck$LassoCheckResult]: Loop: 42#L15-2 [30] L15-2-->L16: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 47#L16 [33] L16-->L15-2: Formula: (and (> 0 v_ULTIMATE.start_main_~b~0_7) (= 0 v_ULTIMATE.start_main_~b~0_5) (> 0 v_ULTIMATE.start_main_~x~0_4) (= v_ULTIMATE.start_main_~x~0_4 (+ v_ULTIMATE.start_main_~x~0_5 (- 1)))) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_4, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~b~0] 42#L15-2 [2020-06-21 23:18:28,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:28,594 INFO L82 PathProgramCache]: Analyzing trace with hash 52860, now seen corresponding path program 1 times [2020-06-21 23:18:28,594 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:28,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:28,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:28,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:18:28,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:28,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:28,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1924, now seen corresponding path program 2 times [2020-06-21 23:18:28,603 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:28,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:28,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:28,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:18:28,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:28,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:28,609 INFO L82 PathProgramCache]: Analyzing trace with hash 50799423, now seen corresponding path program 1 times [2020-06-21 23:18:28,609 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:28,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:28,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:28,610 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-21 23:18:28,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:18:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:18:28,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-21 23:18:28,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-21 23:18:28,667 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:18:28,667 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:18:28,667 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:18:28,667 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:18:28,667 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:18:28,668 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:28,668 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:18:28,668 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:18:28,668 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-21 23:18:28,668 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:18:28,668 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:18:28,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:28,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:28,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:28,718 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:18:28,718 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:28,722 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:18:28,723 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:28,753 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:18:28,753 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:18:28,777 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:18:28,777 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 0, 15] Nus: [0, 0] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:28,804 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:18:28,805 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:28,838 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:18:28,839 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:18:28,873 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 23:18:28,875 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:18:28,875 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:18:28,875 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:18:28,876 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:18:28,876 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 23:18:28,876 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 23:18:28,876 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:18:28,876 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:18:28,876 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-21 23:18:28,876 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:18:28,876 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:18:28,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:28,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:28,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:28,921 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:18:28,921 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 23:18:28,921 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-21 23:18:28,922 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:18:28,922 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:18:28,922 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:18:28,923 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:18:28,923 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:18:28,923 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:18:28,924 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:18:28,930 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:18:28,931 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-21 23:18:28,932 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:18:28,932 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:18:28,932 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:18:28,932 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:18:28,932 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:18:28,933 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:18:28,933 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:18:28,937 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 23:18:28,940 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 23:18:28,940 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-21 23:18:28,941 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 23:18:28,941 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 23:18:28,941 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 23:18:28,941 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~b~0) = -1*ULTIMATE.start_main_~b~0 Supporting invariants [] [2020-06-21 23:18:28,941 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 23:18:28,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:18:28,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-21 23:18:28,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:18:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:18:28,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 23:18:28,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:18:28,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:18:28,971 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-06-21 23:18:28,971 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-06-21 23:18:28,971 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 14 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-06-21 23:18:29,004 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 14 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 11 states and 22 transitions. Complement of second has 4 states. [2020-06-21 23:18:29,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-21 23:18:29,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-21 23:18:29,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-06-21 23:18:29,006 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-21 23:18:29,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:29,007 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 5 letters. Loop has 2 letters. [2020-06-21 23:18:29,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:29,007 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 4 letters. [2020-06-21 23:18:29,008 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:29,009 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 22 transitions. [2020-06-21 23:18:29,010 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-06-21 23:18:29,011 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 22 transitions. [2020-06-21 23:18:29,011 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-06-21 23:18:29,011 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-06-21 23:18:29,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 22 transitions. [2020-06-21 23:18:29,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 23:18:29,011 INFO L706 BuchiCegarLoop]: Abstraction has 11 states and 22 transitions. [2020-06-21 23:18:29,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 22 transitions. [2020-06-21 23:18:29,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 7. [2020-06-21 23:18:29,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-06-21 23:18:29,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 14 transitions. [2020-06-21 23:18:29,013 INFO L729 BuchiCegarLoop]: Abstraction has 7 states and 14 transitions. [2020-06-21 23:18:29,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-21 23:18:29,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-21 23:18:29,017 INFO L87 Difference]: Start difference. First operand 7 states and 14 transitions. Second operand 3 states. [2020-06-21 23:18:29,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-21 23:18:29,040 INFO L93 Difference]: Finished difference Result 10 states and 16 transitions. [2020-06-21 23:18:29,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-21 23:18:29,042 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 16 transitions. [2020-06-21 23:18:29,043 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-21 23:18:29,043 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 14 transitions. [2020-06-21 23:18:29,043 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-06-21 23:18:29,044 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-06-21 23:18:29,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 14 transitions. [2020-06-21 23:18:29,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 23:18:29,044 INFO L706 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-06-21 23:18:29,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 14 transitions. [2020-06-21 23:18:29,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 5. [2020-06-21 23:18:29,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-06-21 23:18:29,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2020-06-21 23:18:29,046 INFO L729 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-06-21 23:18:29,046 INFO L609 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-06-21 23:18:29,046 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-21 23:18:29,046 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 8 transitions. [2020-06-21 23:18:29,046 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-21 23:18:29,046 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:18:29,047 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:18:29,047 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-21 23:18:29,047 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-21 23:18:29,047 INFO L794 eck$LassoCheckResult]: Stem: 111#ULTIMATE.startENTRY [23] ULTIMATE.startENTRY-->L15-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~b~0, ULTIMATE.start_main_~x~0] 112#L15-2 [30] L15-2-->L16: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 113#L16 [2020-06-21 23:18:29,048 INFO L796 eck$LassoCheckResult]: Loop: 113#L16 [35] L16-->L15-2: Formula: (and (< 0 v_ULTIMATE.start_main_~b~0_7) (<= 0 v_ULTIMATE.start_main_~x~0_4) (= v_ULTIMATE.start_main_~x~0_4 (+ v_ULTIMATE.start_main_~x~0_5 (- 1))) (= 1 v_ULTIMATE.start_main_~b~0_5)) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_4, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~b~0] 114#L15-2 [30] L15-2-->L16: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 113#L16 [2020-06-21 23:18:29,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:29,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1704, now seen corresponding path program 1 times [2020-06-21 23:18:29,048 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:29,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:29,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:29,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:18:29,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:29,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:29,054 INFO L82 PathProgramCache]: Analyzing trace with hash 2076, now seen corresponding path program 1 times [2020-06-21 23:18:29,054 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:29,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:29,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:29,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:18:29,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:29,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:29,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1638659, now seen corresponding path program 1 times [2020-06-21 23:18:29,061 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:29,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:29,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:29,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:18:29,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:29,097 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:18:29,098 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:18:29,098 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:18:29,098 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:18:29,098 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:18:29,098 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:29,098 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:18:29,098 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:18:29,098 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-21 23:18:29,098 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:18:29,099 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:18:29,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:29,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:29,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:29,156 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:18:29,156 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:29,160 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:18:29,160 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:18:29,164 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:18:29,164 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:29,194 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:18:29,194 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:29,225 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:18:29,225 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:18:29,278 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 23:18:29,280 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:18:29,280 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:18:29,280 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:18:29,280 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:18:29,280 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 23:18:29,280 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 23:18:29,280 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:18:29,281 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:18:29,281 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-21 23:18:29,281 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:18:29,281 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:18:29,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:29,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:29,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:29,344 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:18:29,344 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 23:18:29,363 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-21 23:18:29,364 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:18:29,365 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:18:29,365 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:18:29,365 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:18:29,365 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:18:29,366 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:18:29,366 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:18:29,367 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:18:29,368 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-21 23:18:29,368 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:18:29,368 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:18:29,369 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:18:29,369 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:18:29,369 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:18:29,370 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:18:29,370 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:18:29,374 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 23:18:29,377 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 23:18:29,377 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-21 23:18:29,378 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 23:18:29,378 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 23:18:29,378 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 23:18:29,378 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-06-21 23:18:29,378 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 23:18:29,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:18:29,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-21 23:18:29,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:18:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:18:29,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 23:18:29,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:18:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:18:29,458 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-06-21 23:18:29,458 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-06-21 23:18:29,458 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states and 8 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-06-21 23:18:29,535 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states and 8 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 18 states and 27 transitions. Complement of second has 14 states. [2020-06-21 23:18:29,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 2 accepting loop states [2020-06-21 23:18:29,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-21 23:18:29,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2020-06-21 23:18:29,537 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 2 letters. Loop has 2 letters. [2020-06-21 23:18:29,537 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:29,537 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 4 letters. Loop has 2 letters. [2020-06-21 23:18:29,537 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:29,537 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 2 letters. Loop has 4 letters. [2020-06-21 23:18:29,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:29,539 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 27 transitions. [2020-06-21 23:18:29,540 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-21 23:18:29,541 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 15 states and 24 transitions. [2020-06-21 23:18:29,541 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-06-21 23:18:29,541 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-06-21 23:18:29,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 24 transitions. [2020-06-21 23:18:29,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 23:18:29,542 INFO L706 BuchiCegarLoop]: Abstraction has 15 states and 24 transitions. [2020-06-21 23:18:29,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 24 transitions. [2020-06-21 23:18:29,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 10. [2020-06-21 23:18:29,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-06-21 23:18:29,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 18 transitions. [2020-06-21 23:18:29,544 INFO L729 BuchiCegarLoop]: Abstraction has 10 states and 18 transitions. [2020-06-21 23:18:29,544 INFO L609 BuchiCegarLoop]: Abstraction has 10 states and 18 transitions. [2020-06-21 23:18:29,544 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2020-06-21 23:18:29,544 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 18 transitions. [2020-06-21 23:18:29,545 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-21 23:18:29,545 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:18:29,545 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:18:29,545 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-06-21 23:18:29,545 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-21 23:18:29,546 INFO L794 eck$LassoCheckResult]: Stem: 189#ULTIMATE.startENTRY [23] ULTIMATE.startENTRY-->L15-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~b~0, ULTIMATE.start_main_~x~0] 190#L15-2 [30] L15-2-->L16: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 192#L16 [36] L16-->L15-2: Formula: (and (= 0 v_ULTIMATE.start_main_~b~0_5) (< 0 v_ULTIMATE.start_main_~b~0_7) (> 0 v_ULTIMATE.start_main_~x~0_4) (= v_ULTIMATE.start_main_~x~0_4 (+ v_ULTIMATE.start_main_~x~0_5 (- 1)))) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_4, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~b~0] 185#L15-2 [2020-06-21 23:18:29,546 INFO L796 eck$LassoCheckResult]: Loop: 185#L15-2 [30] L15-2-->L16: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 184#L16 [36] L16-->L15-2: Formula: (and (= 0 v_ULTIMATE.start_main_~b~0_5) (< 0 v_ULTIMATE.start_main_~b~0_7) (> 0 v_ULTIMATE.start_main_~x~0_4) (= v_ULTIMATE.start_main_~x~0_4 (+ v_ULTIMATE.start_main_~x~0_5 (- 1)))) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_4, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~b~0] 185#L15-2 [2020-06-21 23:18:29,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:29,546 INFO L82 PathProgramCache]: Analyzing trace with hash 52860, now seen corresponding path program 2 times [2020-06-21 23:18:29,546 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:29,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:29,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:29,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:18:29,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:29,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:29,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1927, now seen corresponding path program 1 times [2020-06-21 23:18:29,555 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:29,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:29,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:29,556 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-21 23:18:29,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:29,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:29,561 INFO L82 PathProgramCache]: Analyzing trace with hash 50799426, now seen corresponding path program 3 times [2020-06-21 23:18:29,561 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:29,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:29,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:29,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:18:29,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:18:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:18:29,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-21 23:18:29,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-21 23:18:29,604 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:18:29,604 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:18:29,604 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:18:29,604 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:18:29,604 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:18:29,604 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:29,604 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:18:29,604 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:18:29,605 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-06-21 23:18:29,605 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:18:29,605 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:18:29,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:29,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:29,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:29,655 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:18:29,656 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:29,663 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:18:29,663 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:29,697 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:18:29,697 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:18:29,727 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 23:18:29,730 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:18:29,730 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:18:29,730 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:18:29,730 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:18:29,730 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 23:18:29,730 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 23:18:29,730 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:18:29,730 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:18:29,731 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-06-21 23:18:29,731 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:18:29,731 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:18:29,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:29,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:29,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:18:29,777 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:18:29,777 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 23:18:29,777 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-21 23:18:29,778 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:18:29,778 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:18:29,778 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:18:29,778 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:18:29,779 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:18:29,779 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:18:29,779 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:18:29,783 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 23:18:29,785 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 23:18:29,786 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-21 23:18:29,786 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 23:18:29,786 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 23:18:29,786 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 23:18:29,786 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~b~0) = 1*ULTIMATE.start_main_~b~0 Supporting invariants [] [2020-06-21 23:18:29,787 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 23:18:29,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:18:29,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-21 23:18:29,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:18:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:18:29,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 23:18:29,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:18:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:18:29,814 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-06-21 23:18:29,814 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-06-21 23:18:29,814 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 10 states and 18 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-06-21 23:18:29,830 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 10 states and 18 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 21 states and 34 transitions. Complement of second has 4 states. [2020-06-21 23:18:29,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-21 23:18:29,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-21 23:18:29,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-06-21 23:18:29,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-21 23:18:29,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:29,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 5 letters. Loop has 2 letters. [2020-06-21 23:18:29,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:29,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2020-06-21 23:18:29,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:29,833 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 34 transitions. [2020-06-21 23:18:29,834 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-21 23:18:29,835 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2020-06-21 23:18:29,835 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-06-21 23:18:29,835 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-06-21 23:18:29,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-06-21 23:18:29,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-21 23:18:29,835 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:18:29,835 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:18:29,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-21 23:18:29,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-21 23:18:29,836 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 3 states. [2020-06-21 23:18:29,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-21 23:18:29,836 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-06-21 23:18:29,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-06-21 23:18:29,837 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-06-21 23:18:29,837 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-21 23:18:29,837 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-06-21 23:18:29,837 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-06-21 23:18:29,838 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-06-21 23:18:29,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-06-21 23:18:29,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-21 23:18:29,838 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:18:29,838 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:18:29,838 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:18:29,838 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2020-06-21 23:18:29,838 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-06-21 23:18:29,838 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-21 23:18:29,839 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-06-21 23:18:29,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:18:29 BasicIcfg [2020-06-21 23:18:29,844 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-21 23:18:29,845 INFO L168 Benchmark]: Toolchain (without parser) took 2676.27 ms. Allocated memory was 514.9 MB in the beginning and 599.8 MB in the end (delta: 84.9 MB). Free memory was 440.6 MB in the beginning and 459.8 MB in the end (delta: -19.2 MB). Peak memory consumption was 65.8 MB. Max. memory is 50.3 GB. [2020-06-21 23:18:29,847 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 459.6 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-21 23:18:29,847 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.63 ms. Allocated memory was 514.9 MB in the beginning and 568.3 MB in the end (delta: 53.5 MB). Free memory was 440.0 MB in the beginning and 538.7 MB in the end (delta: -98.7 MB). Peak memory consumption was 29.5 MB. Max. memory is 50.3 GB. [2020-06-21 23:18:29,848 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.01 ms. Allocated memory is still 568.3 MB. Free memory was 538.7 MB in the beginning and 535.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 50.3 GB. [2020-06-21 23:18:29,848 INFO L168 Benchmark]: Boogie Preprocessor took 18.40 ms. Allocated memory is still 568.3 MB. Free memory was 535.8 MB in the beginning and 535.1 MB in the end (delta: 673.7 kB). Peak memory consumption was 673.7 kB. Max. memory is 50.3 GB. [2020-06-21 23:18:29,849 INFO L168 Benchmark]: RCFGBuilder took 186.80 ms. Allocated memory is still 568.3 MB. Free memory was 534.4 MB in the beginning and 524.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 50.3 GB. [2020-06-21 23:18:29,849 INFO L168 Benchmark]: BlockEncodingV2 took 75.33 ms. Allocated memory is still 568.3 MB. Free memory was 524.4 MB in the beginning and 518.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 50.3 GB. [2020-06-21 23:18:29,850 INFO L168 Benchmark]: TraceAbstraction took 150.16 ms. Allocated memory is still 568.3 MB. Free memory was 518.4 MB in the beginning and 509.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 50.3 GB. [2020-06-21 23:18:29,850 INFO L168 Benchmark]: BuchiAutomizer took 1935.89 ms. Allocated memory was 568.3 MB in the beginning and 599.8 MB in the end (delta: 31.5 MB). Free memory was 509.6 MB in the beginning and 459.8 MB in the end (delta: 49.8 MB). Peak memory consumption was 81.3 MB. Max. memory is 50.3 GB. [2020-06-21 23:18:29,855 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 7 locations, 9 edges - StatisticsResult: Encoded RCFG 3 locations, 6 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 459.6 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 271.63 ms. Allocated memory was 514.9 MB in the beginning and 568.3 MB in the end (delta: 53.5 MB). Free memory was 440.0 MB in the beginning and 538.7 MB in the end (delta: -98.7 MB). Peak memory consumption was 29.5 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.01 ms. Allocated memory is still 568.3 MB. Free memory was 538.7 MB in the beginning and 535.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.40 ms. Allocated memory is still 568.3 MB. Free memory was 535.8 MB in the beginning and 535.1 MB in the end (delta: 673.7 kB). Peak memory consumption was 673.7 kB. Max. memory is 50.3 GB. * RCFGBuilder took 186.80 ms. Allocated memory is still 568.3 MB. Free memory was 534.4 MB in the beginning and 524.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 75.33 ms. Allocated memory is still 568.3 MB. Free memory was 524.4 MB in the beginning and 518.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 50.3 GB. * TraceAbstraction took 150.16 ms. Allocated memory is still 568.3 MB. Free memory was 518.4 MB in the beginning and 509.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1935.89 ms. Allocated memory was 568.3 MB in the beginning and 599.8 MB in the end (delta: 31.5 MB). Free memory was 509.6 MB in the beginning and 459.8 MB in the end (delta: 49.8 MB). Peak memory consumption was 81.3 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 locations, 0 error locations. SAFE Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 0 deterministic, 4 nondeterministic). One nondeterministic module has affine ranking function -1 * b and consists of 3 locations. One nondeterministic module has affine ranking function -1 * b and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 6 locations. One nondeterministic module has affine ranking function b and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.9s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 10 states and ocurred in iteration 3. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 31 SDslu, 9 SDs, 0 SdLazy, 57 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !ENTRY org.eclipse.core.resources 2 10035 2020-06-21 23:18:30.083 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check