YES Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 10:18:37,761 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 10:18:37,763 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 10:18:37,774 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 10:18:37,775 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 10:18:37,776 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 10:18:37,777 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 10:18:37,778 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 10:18:37,780 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 10:18:37,781 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 10:18:37,781 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 10:18:37,782 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 10:18:37,782 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 10:18:37,783 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 10:18:37,784 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 10:18:37,785 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 10:18:37,786 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 10:18:37,787 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 10:18:37,789 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 10:18:37,791 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 10:18:37,792 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 10:18:37,793 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 10:18:37,795 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 10:18:37,795 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 10:18:37,795 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 10:18:37,796 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 10:18:37,796 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 10:18:37,797 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 10:18:37,797 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 10:18:37,798 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 10:18:37,799 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 10:18:37,799 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 10:18:37,800 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 10:18:37,800 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 10:18:37,801 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 10:18:37,801 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 10:18:37,801 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 10:18:37,802 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 10:18:37,803 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 10:18:37,803 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-22 10:18:37,817 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 10:18:37,818 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 10:18:37,819 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 10:18:37,819 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 10:18:37,819 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 10:18:37,819 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 10:18:37,819 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 10:18:37,820 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 10:18:37,820 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 10:18:37,820 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 10:18:37,820 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 10:18:37,820 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 10:18:37,821 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 10:18:37,821 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 10:18:37,821 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 10:18:37,821 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 10:18:37,821 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 10:18:37,821 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 10:18:37,822 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 10:18:37,822 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 10:18:37,822 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 10:18:37,822 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 10:18:37,822 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 10:18:37,823 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 10:18:37,823 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 10:18:37,823 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 10:18:37,823 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 10:18:37,823 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 10:18:37,823 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 10:18:37,849 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 10:18:37,862 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 10:18:37,865 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 10:18:37,866 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 10:18:37,867 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 10:18:37,867 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 10:18:37,929 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/86fdf499e4bb485ebd3206f93bc8f694/FLAGc54db3ae0 !SESSION 2020-06-22 10:18:35.463 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.cdt.core 1 0 2020-06-22 10:18:38.194 !MESSAGE Indexed 'FLAGc54db3ae0' (0 sources, 0 headers) in 0.006 sec: 0 declarations; 0 references; 0 unresolved inclusions; 0 syntax errors; 0 unresolved names (0%) [2020-06-22 10:18:38,281 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 10:18:38,282 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 10:18:38,288 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/86fdf499e4bb485ebd3206f93bc8f694/FLAGc54db3ae0 [2020-06-22 10:18:38,727 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/86fdf499e4bb485ebd3206f93bc8f694 [2020-06-22 10:18:38,739 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 10:18:38,740 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 10:18:38,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 10:18:38,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 10:18:38,745 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 10:18:38,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 10:18:38" (1/1) ... [2020-06-22 10:18:38,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b378bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:18:38, skipping insertion in model container [2020-06-22 10:18:38,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 10:18:38" (1/1) ... [2020-06-22 10:18:38,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 10:18:38,775 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 10:18:38,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 10:18:38,936 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 10:18:39,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 10:18:39,033 INFO L195 MainTranslator]: Completed translation [2020-06-22 10:18:39,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:18:39 WrapperNode [2020-06-22 10:18:39,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 10:18:39,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 10:18:39,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 10:18:39,035 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 10:18:39,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:18:39" (1/1) ... [2020-06-22 10:18:39,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:18:39" (1/1) ... [2020-06-22 10:18:39,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 10:18:39,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 10:18:39,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 10:18:39,070 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 10:18:39,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:18:39" (1/1) ... [2020-06-22 10:18:39,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:18:39" (1/1) ... [2020-06-22 10:18:39,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:18:39" (1/1) ... [2020-06-22 10:18:39,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:18:39" (1/1) ... [2020-06-22 10:18:39,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:18:39" (1/1) ... [2020-06-22 10:18:39,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:18:39" (1/1) ... [2020-06-22 10:18:39,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:18:39" (1/1) ... [2020-06-22 10:18:39,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 10:18:39,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 10:18:39,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 10:18:39,089 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 10:18:39,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:18:39" (1/1) ... No working directory specified, using /export/starexec/sandbox/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 [2020-06-22 10:18:39,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 10:18:39,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 10:18:39,279 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 10:18:39,279 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-22 10:18:39,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:18:39 BoogieIcfgContainer [2020-06-22 10:18:39,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 10:18:39,281 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 10:18:39,281 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 10:18:39,283 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 10:18:39,284 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:18:39" (1/1) ... [2020-06-22 10:18:39,299 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-06-22 10:18:39,300 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 10:18:39,301 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 10:18:39,302 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 10:18:39,302 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 10:18:39,304 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 10:18:39,305 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 10:18:39,305 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 10:18:39,319 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 10:18:39,333 INFO L200 BlockEncoder]: SBE split 1 edges [2020-06-22 10:18:39,338 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-22 10:18:39,340 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 10:18:39,352 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-06-22 10:18:39,354 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-22 10:18:39,355 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 10:18:39,356 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 10:18:39,356 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 10:18:39,356 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 10:18:39,356 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 5 edges [2020-06-22 10:18:39,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 10:18:39 BasicIcfg [2020-06-22 10:18:39,357 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 10:18:39,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 10:18:39,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 10:18:39,362 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 10:18:39,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 10:18:38" (1/4) ... [2020-06-22 10:18:39,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584bf54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 10:18:39, skipping insertion in model container [2020-06-22 10:18:39,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:18:39" (2/4) ... [2020-06-22 10:18:39,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584bf54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 10:18:39, skipping insertion in model container [2020-06-22 10:18:39,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:18:39" (3/4) ... [2020-06-22 10:18:39,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584bf54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 10:18:39, skipping insertion in model container [2020-06-22 10:18:39,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 10:18:39" (4/4) ... [2020-06-22 10:18:39,366 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 10:18:39,375 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 10:18:39,383 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 10:18:39,399 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 10:18:39,428 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 10:18:39,428 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 10:18:39,429 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 10:18:39,429 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 10:18:39,429 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 10:18:39,429 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 10:18:39,429 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 10:18:39,430 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 10:18:39,430 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 10:18:39,444 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-06-22 10:18:39,449 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 10:18:39,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-06-22 10:18:39,500 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 10:18:39,501 INFO L448 ceAbstractionStarter]: For program point L12(lines 12 16) no Hoare annotation was computed. [2020-06-22 10:18:39,501 INFO L451 ceAbstractionStarter]: At program point L12-2(lines 11 17) the Hoare annotation is: true [2020-06-22 10:18:39,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 10:18:39 BasicIcfg [2020-06-22 10:18:39,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 10:18:39,510 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 10:18:39,510 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 10:18:39,513 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 10:18:39,514 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 10:18:39,514 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 10:18:38" (1/5) ... [2020-06-22 10:18:39,515 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58cfd537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 10:18:39, skipping insertion in model container [2020-06-22 10:18:39,515 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 10:18:39,515 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:18:39" (2/5) ... [2020-06-22 10:18:39,515 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58cfd537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 10:18:39, skipping insertion in model container [2020-06-22 10:18:39,516 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 10:18:39,516 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:18:39" (3/5) ... [2020-06-22 10:18:39,516 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58cfd537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 10:18:39, skipping insertion in model container [2020-06-22 10:18:39,516 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 10:18:39,517 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 10:18:39" (4/5) ... [2020-06-22 10:18:39,517 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58cfd537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 10:18:39, skipping insertion in model container [2020-06-22 10:18:39,517 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 10:18:39,517 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 10:18:39" (5/5) ... [2020-06-22 10:18:39,518 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 10:18:39,545 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 10:18:39,545 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 10:18:39,546 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 10:18:39,546 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 10:18:39,546 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 10:18:39,546 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 10:18:39,546 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 10:18:39,546 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 10:18:39,546 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 10:18:39,550 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-22 10:18:39,567 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 10:18:39,567 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 10:18:39,567 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 10:18:39,573 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 10:18:39,573 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 10:18:39,573 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 10:18:39,573 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-22 10:18:39,574 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 10:18:39,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 10:18:39,574 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 10:18:39,574 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 10:18:39,574 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 10:18:39,579 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [27] ULTIMATE.startENTRY-->L12-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 3#L12-2true [2020-06-22 10:18:39,580 INFO L796 eck$LassoCheckResult]: Loop: 3#L12-2true [35] L12-2-->L12: Formula: (< v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 5#L12true [34] L12-->L12-2: Formula: (and (>= v_ULTIMATE.start_main_~y~0_10 v_ULTIMATE.start_main_~x~0_10) (= v_ULTIMATE.start_main_~x~0_9 (+ v_ULTIMATE.start_main_~x~0_10 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 3#L12-2true [2020-06-22 10:18:39,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 10:18:39,586 INFO L82 PathProgramCache]: Analyzing trace with hash 58, now seen corresponding path program 1 times [2020-06-22 10:18:39,588 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 10:18:39,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 10:18:39,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:18:39,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 10:18:39,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:18:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:18:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:18:39,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 10:18:39,657 INFO L82 PathProgramCache]: Analyzing trace with hash 2080, now seen corresponding path program 1 times [2020-06-22 10:18:39,657 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 10:18:39,657 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 10:18:39,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:18:39,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 10:18:39,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:18:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:18:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:18:39,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 10:18:39,671 INFO L82 PathProgramCache]: Analyzing trace with hash 56857, now seen corresponding path program 1 times [2020-06-22 10:18:39,672 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 10:18:39,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 10:18:39,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:18:39,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 10:18:39,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:18:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:18:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:18:39,725 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 10:18:39,726 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 10:18:39,726 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 10:18:39,726 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 10:18:39,727 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 10:18:39,727 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 10:18:39,727 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 10:18:39,727 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 10:18:39,727 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 10:18:39,727 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 10:18:39,728 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 10:18:39,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 10:18:39,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 10:18:39,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 10:18:39,837 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 10:18:39,838 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/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 [2020-06-22 10:18:39,844 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 10:18:39,844 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 10:18:39,877 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 10:18:39,877 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/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 [2020-06-22 10:18:39,886 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 10:18:39,887 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 10:18:39,914 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 10:18:39,914 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/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 [2020-06-22 10:18:39,923 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 10:18:39,923 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/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 [2020-06-22 10:18:39,954 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 10:18:39,954 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 10:18:40,122 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 10:18:40,125 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 10:18:40,125 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 10:18:40,126 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 10:18:40,126 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 10:18:40,126 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 10:18:40,126 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 10:18:40,126 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 10:18:40,126 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 10:18:40,126 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 10:18:40,126 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 10:18:40,127 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 10:18:40,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 10:18:40,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 10:18:40,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 10:18:40,220 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 10:18:40,226 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 10:18:40,229 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 [2020-06-22 10:18:40,231 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 10:18:40,231 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 10:18:40,231 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 10:18:40,231 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 10:18:40,236 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 10:18:40,236 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 10:18:40,244 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 10:18:40,245 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 [2020-06-22 10:18:40,245 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 10:18:40,246 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 10:18:40,246 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 10:18:40,246 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 10:18:40,246 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 10:18:40,247 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 10:18:40,247 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 10:18:40,254 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 10:18:40,262 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-06-22 10:18:40,262 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 10:18:40,265 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 10:18:40,265 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 10:18:40,265 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 10:18:40,265 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~y~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-06-22 10:18:40,267 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 10:18:40,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 10:18:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 10:18:40,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 10:18:40,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 10:18:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 10:18:40,329 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 10:18:40,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 10:18:40,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 10:18:40,344 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-06-22 10:18:40,349 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 [2020-06-22 10:18:40,350 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-06-22 10:18:40,382 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 7 states and 15 transitions. Complement of second has 4 states. [2020-06-22 10:18:40,382 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 [2020-06-22 10:18:40,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 10:18:40,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-06-22 10:18:40,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-22 10:18:40,388 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 10:18:40,388 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-22 10:18:40,388 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 10:18:40,388 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 1 letters. Loop has 4 letters. [2020-06-22 10:18:40,388 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 10:18:40,394 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 15 transitions. [2020-06-22 10:18:40,395 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 10:18:40,400 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 15 transitions. [2020-06-22 10:18:40,401 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-06-22 10:18:40,401 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-06-22 10:18:40,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 15 transitions. [2020-06-22 10:18:40,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 10:18:40,402 INFO L706 BuchiCegarLoop]: Abstraction has 7 states and 15 transitions. [2020-06-22 10:18:40,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 15 transitions. [2020-06-22 10:18:40,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-06-22 10:18:40,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-06-22 10:18:40,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 15 transitions. [2020-06-22 10:18:40,432 INFO L729 BuchiCegarLoop]: Abstraction has 7 states and 15 transitions. [2020-06-22 10:18:40,432 INFO L609 BuchiCegarLoop]: Abstraction has 7 states and 15 transitions. [2020-06-22 10:18:40,432 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 10:18:40,432 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 15 transitions. [2020-06-22 10:18:40,433 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 10:18:40,433 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 10:18:40,433 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 10:18:40,434 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-06-22 10:18:40,434 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 10:18:40,434 INFO L794 eck$LassoCheckResult]: Stem: 46#ULTIMATE.startENTRY [27] ULTIMATE.startENTRY-->L12-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 47#L12-2 [36] L12-2-->L12: Formula: (> v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 45#L12 [28] L12-->L12-2: Formula: (and (< v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_8) (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~y~0_9 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 41#L12-2 [2020-06-22 10:18:40,435 INFO L796 eck$LassoCheckResult]: Loop: 41#L12-2 [35] L12-2-->L12: Formula: (< v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 42#L12 [34] L12-->L12-2: Formula: (and (>= v_ULTIMATE.start_main_~y~0_10 v_ULTIMATE.start_main_~x~0_10) (= v_ULTIMATE.start_main_~x~0_9 (+ v_ULTIMATE.start_main_~x~0_10 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 41#L12-2 [2020-06-22 10:18:40,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 10:18:40,435 INFO L82 PathProgramCache]: Analyzing trace with hash 56882, now seen corresponding path program 1 times [2020-06-22 10:18:40,435 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 10:18:40,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 10:18:40,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:18:40,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 10:18:40,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:18:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:18:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:18:40,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 10:18:40,444 INFO L82 PathProgramCache]: Analyzing trace with hash 2080, now seen corresponding path program 2 times [2020-06-22 10:18:40,444 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 10:18:40,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 10:18:40,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:18:40,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 10:18:40,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:18:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:18:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:18:40,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 10:18:40,451 INFO L82 PathProgramCache]: Analyzing trace with hash 54664721, now seen corresponding path program 1 times [2020-06-22 10:18:40,451 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 10:18:40,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 10:18:40,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:18:40,452 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 10:18:40,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:18:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 10:18:40,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 10:18:40,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 10:18:40,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-06-22 10:18:40,514 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 10:18:40,514 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 10:18:40,514 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 10:18:40,514 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 10:18:40,514 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 10:18:40,515 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 10:18:40,515 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 10:18:40,515 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 10:18:40,515 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-22 10:18:40,515 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 10:18:40,515 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 10:18:40,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 10:18:40,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 10:18:40,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 10:18:40,566 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 10:18:40,567 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/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 [2020-06-22 10:18:40,570 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 10:18:40,570 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 10:18:40,597 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 10:18:40,597 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/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 [2020-06-22 10:18:40,602 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 10:18:40,602 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 10:18:40,629 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 10:18:40,630 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/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 [2020-06-22 10:18:40,635 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 10:18:40,635 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/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 [2020-06-22 10:18:40,665 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 10:18:40,665 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 10:18:40,878 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 10:18:40,880 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 10:18:40,880 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 10:18:40,881 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 10:18:40,881 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 10:18:40,881 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 10:18:40,881 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 10:18:40,881 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 10:18:40,881 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 10:18:40,881 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-22 10:18:40,881 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 10:18:40,881 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 10:18:40,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 10:18:40,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 10:18:40,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 10:18:40,929 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 10:18:40,929 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 10:18:40,929 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 [2020-06-22 10:18:40,930 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 10:18:40,930 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 10:18:40,930 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 10:18:40,931 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 10:18:40,933 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 10:18:40,933 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 10:18:40,937 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 10:18:40,938 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 [2020-06-22 10:18:40,938 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 10:18:40,939 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 10:18:40,939 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 10:18:40,939 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 10:18:40,939 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 10:18:40,940 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 10:18:40,940 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 10:18:40,945 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 10:18:40,949 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 10:18:40,949 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 10:18:40,950 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 10:18:40,950 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 10:18:40,950 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 10:18:40,950 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~y~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-06-22 10:18:40,951 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 10:18:40,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 10:18:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 10:18:40,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 10:18:40,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 10:18:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 10:18:40,983 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 10:18:40,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 10:18:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 10:18:40,984 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-06-22 10:18:40,984 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 [2020-06-22 10:18:40,985 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 15 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-06-22 10:18:41,003 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 15 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 9 states and 21 transitions. Complement of second has 4 states. [2020-06-22 10:18:41,004 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 [2020-06-22 10:18:41,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 10:18:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-06-22 10:18:41,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-22 10:18:41,005 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 10:18:41,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2020-06-22 10:18:41,006 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 10:18:41,006 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2020-06-22 10:18:41,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 10:18:41,008 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 21 transitions. [2020-06-22 10:18:41,009 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 10:18:41,009 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 21 transitions. [2020-06-22 10:18:41,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-06-22 10:18:41,010 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-06-22 10:18:41,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 21 transitions. [2020-06-22 10:18:41,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 10:18:41,010 INFO L706 BuchiCegarLoop]: Abstraction has 9 states and 21 transitions. [2020-06-22 10:18:41,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 21 transitions. [2020-06-22 10:18:41,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 5. [2020-06-22 10:18:41,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-06-22 10:18:41,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2020-06-22 10:18:41,012 INFO L729 BuchiCegarLoop]: Abstraction has 5 states and 11 transitions. [2020-06-22 10:18:41,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-06-22 10:18:41,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-06-22 10:18:41,015 INFO L87 Difference]: Start difference. First operand 5 states and 11 transitions. Second operand 4 states. [2020-06-22 10:18:41,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 10:18:41,045 INFO L93 Difference]: Finished difference Result 8 states and 14 transitions. [2020-06-22 10:18:41,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-06-22 10:18:41,047 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 14 transitions. [2020-06-22 10:18:41,048 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 10:18:41,048 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 7 states and 11 transitions. [2020-06-22 10:18:41,048 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-06-22 10:18:41,048 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-06-22 10:18:41,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 11 transitions. [2020-06-22 10:18:41,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 10:18:41,049 INFO L706 BuchiCegarLoop]: Abstraction has 7 states and 11 transitions. [2020-06-22 10:18:41,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 11 transitions. [2020-06-22 10:18:41,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-06-22 10:18:41,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-06-22 10:18:41,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10 transitions. [2020-06-22 10:18:41,051 INFO L729 BuchiCegarLoop]: Abstraction has 6 states and 10 transitions. [2020-06-22 10:18:41,051 INFO L609 BuchiCegarLoop]: Abstraction has 6 states and 10 transitions. [2020-06-22 10:18:41,051 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-22 10:18:41,051 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 10 transitions. [2020-06-22 10:18:41,052 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 10:18:41,052 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 10:18:41,052 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 10:18:41,052 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-22 10:18:41,052 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 10:18:41,053 INFO L794 eck$LassoCheckResult]: Stem: 110#ULTIMATE.startENTRY [27] ULTIMATE.startENTRY-->L12-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 111#L12-2 [36] L12-2-->L12: Formula: (> v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 107#L12 [2020-06-22 10:18:41,053 INFO L796 eck$LassoCheckResult]: Loop: 107#L12 [28] L12-->L12-2: Formula: (and (< v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_8) (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~y~0_9 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 106#L12-2 [36] L12-2-->L12: Formula: (> v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 107#L12 [2020-06-22 10:18:41,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 10:18:41,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1834, now seen corresponding path program 1 times [2020-06-22 10:18:41,053 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 10:18:41,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 10:18:41,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:18:41,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 10:18:41,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:18:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:18:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:18:41,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 10:18:41,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1865, now seen corresponding path program 1 times [2020-06-22 10:18:41,060 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 10:18:41,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 10:18:41,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:18:41,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 10:18:41,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:18:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:18:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:18:41,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 10:18:41,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1763378, now seen corresponding path program 2 times [2020-06-22 10:18:41,068 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 10:18:41,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 10:18:41,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:18:41,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 10:18:41,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:18:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:18:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:18:41,097 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 10:18:41,098 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 10:18:41,098 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 10:18:41,098 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 10:18:41,099 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 10:18:41,099 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 10:18:41,099 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 10:18:41,099 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 10:18:41,099 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-22 10:18:41,099 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 10:18:41,099 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 10:18:41,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 10:18:41,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 10:18:41,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 10:18:41,176 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 10:18:41,176 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/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 [2020-06-22 10:18:41,180 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 10:18:41,180 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 10:18:41,208 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 10:18:41,208 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/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 [2020-06-22 10:18:41,214 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 10:18:41,214 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/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 [2020-06-22 10:18:41,246 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 10:18:41,246 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 10:18:41,673 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 10:18:41,675 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 10:18:41,675 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 10:18:41,675 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 10:18:41,675 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 10:18:41,676 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 10:18:41,676 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 10:18:41,676 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 10:18:41,676 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 10:18:41,676 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-22 10:18:41,676 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 10:18:41,676 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 10:18:41,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 10:18:41,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 10:18:41,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 10:18:41,727 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 10:18:41,728 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 10:18:41,728 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 [2020-06-22 10:18:41,729 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 10:18:41,729 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 10:18:41,729 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 10:18:41,729 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 10:18:41,731 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 10:18:41,732 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 10:18:41,737 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 10:18:41,737 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 [2020-06-22 10:18:41,738 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 10:18:41,738 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 10:18:41,738 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 10:18:41,738 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 10:18:41,738 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 10:18:41,739 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 10:18:41,739 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 10:18:41,743 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 10:18:41,749 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-06-22 10:18:41,749 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 10:18:41,749 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 10:18:41,749 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 10:18:41,750 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 10:18:41,750 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-06-22 10:18:41,750 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 10:18:41,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 10:18:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 10:18:41,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 10:18:41,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 10:18:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 10:18:41,774 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 10:18:41,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 10:18:41,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 10:18:41,791 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-06-22 10:18:41,791 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 2 loop predicates [2020-06-22 10:18:41,791 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 6 states and 10 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-06-22 10:18:41,803 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 6 states and 10 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 10 states and 14 transitions. Complement of second has 4 states. [2020-06-22 10:18:41,804 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 [2020-06-22 10:18:41,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 10:18:41,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-06-22 10:18:41,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 2 letters. Loop has 2 letters. [2020-06-22 10:18:41,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 10:18:41,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 2 letters. [2020-06-22 10:18:41,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 10:18:41,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 2 letters. Loop has 4 letters. [2020-06-22 10:18:41,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 10:18:41,808 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 14 transitions. [2020-06-22 10:18:41,808 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 10:18:41,809 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2020-06-22 10:18:41,809 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-06-22 10:18:41,809 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-06-22 10:18:41,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-06-22 10:18:41,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 10:18:41,809 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 10:18:41,809 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 10:18:41,809 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 10:18:41,809 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2020-06-22 10:18:41,810 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-06-22 10:18:41,810 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 10:18:41,810 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-06-22 10:18:41,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 10:18:41 BasicIcfg [2020-06-22 10:18:41,816 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 10:18:41,816 INFO L168 Benchmark]: Toolchain (without parser) took 3077.21 ms. Allocated memory was 649.6 MB in the beginning and 695.2 MB in the end (delta: 45.6 MB). Free memory was 565.9 MB in the beginning and 453.3 MB in the end (delta: 112.6 MB). Peak memory consumption was 158.2 MB. Max. memory is 50.3 GB. [2020-06-22 10:18:41,818 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 585.7 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 10:18:41,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.11 ms. Allocated memory was 649.6 MB in the beginning and 695.2 MB in the end (delta: 45.6 MB). Free memory was 564.8 MB in the beginning and 662.2 MB in the end (delta: -97.4 MB). Peak memory consumption was 29.0 MB. Max. memory is 50.3 GB. [2020-06-22 10:18:41,819 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.37 ms. Allocated memory is still 695.2 MB. Free memory was 662.2 MB in the beginning and 661.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-06-22 10:18:41,820 INFO L168 Benchmark]: Boogie Preprocessor took 18.64 ms. Allocated memory is still 695.2 MB. Free memory was 661.1 MB in the beginning and 658.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 50.3 GB. [2020-06-22 10:18:41,820 INFO L168 Benchmark]: RCFGBuilder took 192.55 ms. Allocated memory is still 695.2 MB. Free memory was 658.3 MB in the beginning and 644.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 50.3 GB. [2020-06-22 10:18:41,821 INFO L168 Benchmark]: BlockEncodingV2 took 75.74 ms. Allocated memory is still 695.2 MB. Free memory was 644.5 MB in the beginning and 639.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-06-22 10:18:41,821 INFO L168 Benchmark]: TraceAbstraction took 150.87 ms. Allocated memory is still 695.2 MB. Free memory was 638.1 MB in the beginning and 629.4 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 50.3 GB. [2020-06-22 10:18:41,822 INFO L168 Benchmark]: BuchiAutomizer took 2306.16 ms. Allocated memory is still 695.2 MB. Free memory was 629.4 MB in the beginning and 453.3 MB in the end (delta: 176.1 MB). Peak memory consumption was 176.1 MB. Max. memory is 50.3 GB. [2020-06-22 10:18:41,827 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, 5 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 585.7 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 293.11 ms. Allocated memory was 649.6 MB in the beginning and 695.2 MB in the end (delta: 45.6 MB). Free memory was 564.8 MB in the beginning and 662.2 MB in the end (delta: -97.4 MB). Peak memory consumption was 29.0 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.37 ms. Allocated memory is still 695.2 MB. Free memory was 662.2 MB in the beginning and 661.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.64 ms. Allocated memory is still 695.2 MB. Free memory was 661.1 MB in the beginning and 658.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 50.3 GB. * RCFGBuilder took 192.55 ms. Allocated memory is still 695.2 MB. Free memory was 658.3 MB in the beginning and 644.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 75.74 ms. Allocated memory is still 695.2 MB. Free memory was 644.5 MB in the beginning and 639.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 150.87 ms. Allocated memory is still 695.2 MB. Free memory was 638.1 MB in the beginning and 629.4 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 2306.16 ms. Allocated memory is still 695.2 MB. Free memory was 629.4 MB in the beginning and 453.3 MB in the end (delta: 176.1 MB). Peak memory consumption was 176.1 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: 11]: 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 4 terminating modules (1 trivial, 0 deterministic, 3 nondeterministic). One nondeterministic module has affine ranking function y + -1 * x and consists of 3 locations. One nondeterministic module has affine ranking function y + -1 * x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 8 SDtfs, 20 SDslu, 0 SDs, 0 SdLazy, 42 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax220 hnf100 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 17ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - 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 2020-06-22 10:18:42.057 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check