/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 10:32:25,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 10:32:25,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 10:32:25,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 10:32:25,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 10:32:25,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 10:32:25,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 10:32:25,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 10:32:25,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 10:32:25,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 10:32:25,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 10:32:25,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 10:32:25,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 10:32:25,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 10:32:25,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 10:32:25,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 10:32:25,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 10:32:25,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 10:32:25,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 10:32:25,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 10:32:25,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 10:32:25,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 10:32:25,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 10:32:25,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 10:32:25,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 10:32:25,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 10:32:25,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 10:32:25,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 10:32:25,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 10:32:25,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 10:32:25,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 10:32:25,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 10:32:25,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 10:32:25,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 10:32:25,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 10:32:25,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 10:32:25,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 10:32:25,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 10:32:25,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 10:32:25,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 10:32:25,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 10:32:25,694 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 10:32:25,708 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 10:32:25,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 10:32:25,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 10:32:25,710 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 10:32:25,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 10:32:25,710 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:32:25,711 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 10:32:25,711 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 10:32:25,711 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 10:32:25,711 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 10:32:25,711 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 10:32:25,711 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 10:32:25,712 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 10:32:25,712 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 10:32:25,712 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:32:25,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 10:32:25,712 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 10:32:25,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 10:32:25,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 10:32:25,713 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 10:32:25,713 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 10:32:25,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 10:32:25,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 10:32:25,714 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 10:32:25,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:32:25,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 10:32:25,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 10:32:25,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 10:32:25,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 10:32:25,879 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 10:32:25,894 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 10:32:25,898 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 10:32:25,900 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 10:32:25,900 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 10:32:25,901 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 10:32:26,796 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_C_lLoa/tmp/25c9733551c947faaad0677a5664168b/FLAG0fdb58d82 !SESSION 2020-07-01 10:32:21.586 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp/BenchExec_run_C_lLoa/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.cdt.core 1 0 2020-07-01 10:32:27.469 !MESSAGE Indexed 'FLAG0fdb58d82' (0 sources, 0 headers) in 0.002 sec: 0 declarations; 0 references; 0 unresolved inclusions; 0 syntax errors; 0 unresolved names (0%) [2020-07-01 10:32:27,743 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 10:32:27,743 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 10:32:27,751 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_C_lLoa/tmp/25c9733551c947faaad0677a5664168b/FLAG0fdb58d82 [2020-07-01 10:32:28,161 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_C_lLoa/tmp/25c9733551c947faaad0677a5664168b [2020-07-01 10:32:28,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 10:32:28,174 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 10:32:28,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 10:32:28,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 10:32:28,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 10:32:28,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:32:28" (1/1) ... [2020-07-01 10:32:28,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1090ee2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:28, skipping insertion in model container [2020-07-01 10:32:28,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:32:28" (1/1) ... [2020-07-01 10:32:28,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 10:32:28,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 10:32:28,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:32:28,428 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 10:32:28,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:32:28,458 INFO L208 MainTranslator]: Completed translation [2020-07-01 10:32:28,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:28 WrapperNode [2020-07-01 10:32:28,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 10:32:28,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 10:32:28,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 10:32:28,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 10:32:28,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:28" (1/1) ... [2020-07-01 10:32:28,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:28" (1/1) ... [2020-07-01 10:32:28,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 10:32:28,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 10:32:28,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 10:32:28,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 10:32:28,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:28" (1/1) ... [2020-07-01 10:32:28,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:28" (1/1) ... [2020-07-01 10:32:28,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:28" (1/1) ... [2020-07-01 10:32:28,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:28" (1/1) ... [2020-07-01 10:32:28,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:28" (1/1) ... [2020-07-01 10:32:28,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:28" (1/1) ... [2020-07-01 10:32:28,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:28" (1/1) ... [2020-07-01 10:32:28,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 10:32:28,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 10:32:28,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 10:32:28,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 10:32:28,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:28" (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 [2020-07-01 10:32:28,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 10:32:28,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 10:32:28,717 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 10:32:28,717 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 10:32:28,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:32:28 BoogieIcfgContainer [2020-07-01 10:32:28,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 10:32:28,722 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 10:32:28,722 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 10:32:28,724 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 10:32:28,725 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:32:28" (1/1) ... [2020-07-01 10:32:28,737 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-07-01 10:32:28,738 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 10:32:28,739 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 10:32:28,740 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 10:32:28,740 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:32:28,742 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 10:32:28,742 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 10:32:28,743 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 10:32:28,756 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 10:32:28,763 INFO L200 BlockEncoder]: SBE split 0 edges [2020-07-01 10:32:28,768 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 10:32:28,770 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:32:28,783 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 10:32:28,784 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 10:32:28,786 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:32:28,786 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:32:28,786 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 10:32:28,786 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:32:28,787 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 4 edges [2020-07-01 10:32:28,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:32:28 BasicIcfg [2020-07-01 10:32:28,787 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 10:32:28,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 10:32:28,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 10:32:28,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 10:32:28,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 10:32:28" (1/4) ... [2020-07-01 10:32:28,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e727cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:32:28, skipping insertion in model container [2020-07-01 10:32:28,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:28" (2/4) ... [2020-07-01 10:32:28,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e727cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:32:28, skipping insertion in model container [2020-07-01 10:32:28,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:32:28" (3/4) ... [2020-07-01 10:32:28,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e727cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:32:28, skipping insertion in model container [2020-07-01 10:32:28,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:32:28" (4/4) ... [2020-07-01 10:32:28,796 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:32:28,806 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 10:32:28,813 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 10:32:28,827 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 10:32:28,850 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 10:32:28,850 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 10:32:28,850 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:32:28,850 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:32:28,850 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:32:28,851 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 10:32:28,851 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:32:28,851 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 10:32:28,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 10:32:28,870 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 10:32:28,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 10:32:28,923 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 10:32:28,924 INFO L268 CegarLoopResult]: For program point L21(lines 21 25) no Hoare annotation was computed. [2020-07-01 10:32:28,924 INFO L271 CegarLoopResult]: At program point L21-2(lines 19 26) the Hoare annotation is: true [2020-07-01 10:32:28,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:32:28 BasicIcfg [2020-07-01 10:32:28,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 10:32:28,933 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 10:32:28,933 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 10:32:28,936 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 10:32:28,937 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:32:28,937 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 10:32:28" (1/5) ... [2020-07-01 10:32:28,938 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5d15c9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:32:28, skipping insertion in model container [2020-07-01 10:32:28,938 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:32:28,938 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:32:28" (2/5) ... [2020-07-01 10:32:28,938 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5d15c9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:32:28, skipping insertion in model container [2020-07-01 10:32:28,938 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:32:28,939 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:32:28" (3/5) ... [2020-07-01 10:32:28,939 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5d15c9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:32:28, skipping insertion in model container [2020-07-01 10:32:28,939 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:32:28,939 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:32:28" (4/5) ... [2020-07-01 10:32:28,940 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5d15c9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:32:28, skipping insertion in model container [2020-07-01 10:32:28,940 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:32:28,940 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:32:28" (5/5) ... [2020-07-01 10:32:28,941 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:32:28,969 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 10:32:28,969 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 10:32:28,969 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:32:28,970 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:32:28,970 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:32:28,970 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 10:32:28,970 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:32:28,970 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 10:32:28,974 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 10:32:28,992 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 10:32:28,992 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:32:28,992 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:32:28,998 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:32:28,998 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 10:32:28,998 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 10:32:28,998 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 10:32:28,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 10:32:28,999 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:32:28,999 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:32:28,999 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:32:28,999 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 10:32:29,004 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [26] ULTIMATE.startENTRY-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~z~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0] 5#L21-2true [2020-07-01 10:32:29,005 INFO L796 eck$LassoCheckResult]: Loop: 5#L21-2true [31] L21-2-->L21: Formula: (and (<= 0 v_ULTIMATE.start_main_~z~0_7) (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 (- 1)))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 3#L21true [34] L21-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 (+ v_ULTIMATE.start_main_~z~0_10 (- 1))) (> 0 v_ULTIMATE.start_main_~y~0_9)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 5#L21-2true [2020-07-01 10:32:29,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:32:29,012 INFO L82 PathProgramCache]: Analyzing trace with hash 57, now seen corresponding path program 1 times [2020-07-01 10:32:29,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:32:29,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491574251] [2020-07-01 10:32:29,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:32:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:29,095 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:32:29,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:32:29,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1956, now seen corresponding path program 1 times [2020-07-01 10:32:29,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:32:29,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109519027] [2020-07-01 10:32:29,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:32:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:29,114 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:32:29,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:32:29,116 INFO L82 PathProgramCache]: Analyzing trace with hash 55772, now seen corresponding path program 1 times [2020-07-01 10:32:29,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:32:29,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001897510] [2020-07-01 10:32:29,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:32:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:29,129 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:32:29,178 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:32:29,179 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:32:29,179 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:32:29,179 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:32:29,180 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:32:29,180 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:32:29,180 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:32:29,180 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:32:29,180 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:32:29,180 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:32:29,181 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:32:29,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:29,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:29,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:29,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:29,307 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:32:29,308 INFO L404 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 [2020-07-01 10:32:29,313 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:32:29,313 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-07-01 10:32:29,350 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:32:29,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:32:29,388 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:32:29,390 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:32:29,391 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:32:29,391 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:32:29,391 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:32:29,391 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:32:29,391 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:32:29,391 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:32:29,392 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:32:29,392 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:32:29,392 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:32:29,392 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:32:29,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:29,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:29,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:29,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:29,500 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:32:29,506 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 10:32:29,511 INFO L120 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 [2020-07-01 10:32:29,514 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:32:29,514 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:32:29,515 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:32:29,515 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:32:29,515 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:32:29,518 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:32:29,519 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:32:29,522 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:32:29,528 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:32:29,529 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 10:32:29,533 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:32:29,533 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:32:29,534 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:32:29,535 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] [2020-07-01 10:32:29,568 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:32:29,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:32:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:32:29,614 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:32:29,615 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:32:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:32:29,627 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:32:29,627 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:32:29,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:32:29,673 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 10:32:29,679 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 [2020-07-01 10:32:29,680 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-07-01 10:32:29,710 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 7 states and 10 transitions. Complement of second has 4 states. [2020-07-01 10:32:29,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 10:32:29,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 10:32:29,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-07-01 10:32:29,715 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 10:32:29,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:32:29,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 10:32:29,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:32:29,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 10:32:29,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:32:29,723 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 10 transitions. [2020-07-01 10:32:29,724 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 10:32:29,727 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 10 transitions. [2020-07-01 10:32:29,728 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 10:32:29,729 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 10:32:29,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-07-01 10:32:29,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:32:29,730 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-07-01 10:32:29,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-07-01 10:32:29,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-07-01 10:32:29,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-01 10:32:29,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-07-01 10:32:29,757 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-07-01 10:32:29,757 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-07-01 10:32:29,757 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 10:32:29,758 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-07-01 10:32:29,758 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 10:32:29,758 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:32:29,758 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:32:29,759 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 10:32:29,759 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 10:32:29,759 INFO L794 eck$LassoCheckResult]: Stem: 47#ULTIMATE.startENTRY [26] ULTIMATE.startENTRY-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~z~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0] 48#L21-2 [31] L21-2-->L21: Formula: (and (<= 0 v_ULTIMATE.start_main_~z~0_7) (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 (- 1)))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 43#L21 [24] L21-->L21-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~y~0_8) (= v_ULTIMATE.start_main_~z~0_8 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~z~0] 44#L21-2 [2020-07-01 10:32:29,760 INFO L796 eck$LassoCheckResult]: Loop: 44#L21-2 [31] L21-2-->L21: Formula: (and (<= 0 v_ULTIMATE.start_main_~z~0_7) (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 (- 1)))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 49#L21 [34] L21-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 (+ v_ULTIMATE.start_main_~z~0_10 (- 1))) (> 0 v_ULTIMATE.start_main_~y~0_9)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 44#L21-2 [2020-07-01 10:32:29,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:32:29,760 INFO L82 PathProgramCache]: Analyzing trace with hash 55762, now seen corresponding path program 1 times [2020-07-01 10:32:29,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:32:29,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539700060] [2020-07-01 10:32:29,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:32:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:29,771 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:32:29,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:32:29,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1956, now seen corresponding path program 2 times [2020-07-01 10:32:29,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:32:29,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51587379] [2020-07-01 10:32:29,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:32:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:29,780 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:32:29,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:32:29,780 INFO L82 PathProgramCache]: Analyzing trace with hash 53588277, now seen corresponding path program 1 times [2020-07-01 10:32:29,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:32:29,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875946923] [2020-07-01 10:32:29,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:32:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:29,794 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:32:29,813 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:32:29,814 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:32:29,814 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:32:29,814 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:32:29,814 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:32:29,814 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:32:29,814 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:32:29,814 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:32:29,815 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 10:32:29,815 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:32:29,815 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:32:29,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:29,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:29,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:29,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:29,902 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:32:29,903 INFO L404 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 [2020-07-01 10:32:29,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:32:29,911 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:32:29,917 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:32:29,917 INFO L440 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 [2020-07-01 10:32:29,954 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:32:29,954 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:32:29,959 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:32:29,959 INFO L440 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 [2020-07-01 10:32:29,994 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:32:29,994 INFO L160 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 [2020-07-01 10:32:30,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:32:30,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:32:30,069 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:32:30,071 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:32:30,072 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:32:30,072 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:32:30,072 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:32:30,072 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:32:30,072 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:32:30,072 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:32:30,072 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:32:30,073 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 10:32:30,073 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:32:30,073 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:32:30,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:30,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:30,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:30,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:30,158 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:32:30,158 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 10:32:30,164 INFO L120 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 [2020-07-01 10:32:30,166 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:32:30,166 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:32:30,166 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:32:30,166 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:32:30,170 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:32:30,171 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:32:30,175 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 10:32:30,208 INFO L120 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 [2020-07-01 10:32:30,210 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:32:30,210 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:32:30,211 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:32:30,211 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:32:30,211 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:32:30,212 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:32:30,212 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:32:30,215 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:32:30,219 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:32:30,220 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 10:32:30,224 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:32:30,224 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:32:30,224 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:32:30,225 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] [2020-07-01 10:32:30,254 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:32:30,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:32:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:32:30,288 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:32:30,289 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:32:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:32:30,296 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:32:30,296 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:32:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:32:30,331 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 10:32:30,331 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 [2020-07-01 10:32:30,332 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-07-01 10:32:30,348 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 9 states and 13 transitions. Complement of second has 4 states. [2020-07-01 10:32:30,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 10:32:30,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 10:32:30,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-07-01 10:32:30,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 10:32:30,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:32:30,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2020-07-01 10:32:30,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:32:30,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 4 letters. [2020-07-01 10:32:30,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:32:30,352 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 13 transitions. [2020-07-01 10:32:30,354 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 10:32:30,354 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 13 transitions. [2020-07-01 10:32:30,354 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 10:32:30,354 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 10:32:30,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-07-01 10:32:30,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:32:30,355 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-07-01 10:32:30,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-07-01 10:32:30,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 5. [2020-07-01 10:32:30,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 10:32:30,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2020-07-01 10:32:30,356 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-07-01 10:32:30,356 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-07-01 10:32:30,357 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 10:32:30,357 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2020-07-01 10:32:30,357 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 10:32:30,357 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:32:30,357 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:32:30,358 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:32:30,358 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 10:32:30,358 INFO L794 eck$LassoCheckResult]: Stem: 99#ULTIMATE.startENTRY [26] ULTIMATE.startENTRY-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~z~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0] 96#L21-2 [2020-07-01 10:32:30,358 INFO L796 eck$LassoCheckResult]: Loop: 96#L21-2 [31] L21-2-->L21: Formula: (and (<= 0 v_ULTIMATE.start_main_~z~0_7) (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 (- 1)))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 95#L21 [24] L21-->L21-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~y~0_8) (= v_ULTIMATE.start_main_~z~0_8 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~z~0] 96#L21-2 [2020-07-01 10:32:30,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:32:30,359 INFO L82 PathProgramCache]: Analyzing trace with hash 57, now seen corresponding path program 2 times [2020-07-01 10:32:30,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:32:30,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827226052] [2020-07-01 10:32:30,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:32:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:30,366 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:32:30,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:32:30,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1946, now seen corresponding path program 1 times [2020-07-01 10:32:30,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:32:30,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117730870] [2020-07-01 10:32:30,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:32:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:30,374 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:32:30,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:32:30,375 INFO L82 PathProgramCache]: Analyzing trace with hash 55762, now seen corresponding path program 2 times [2020-07-01 10:32:30,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:32:30,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327728914] [2020-07-01 10:32:30,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:32:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:32:30,385 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:32:30,410 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:32:30,410 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:32:30,410 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:32:30,410 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:32:30,411 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:32:30,411 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:32:30,411 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:32:30,411 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:32:30,411 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 10:32:30,411 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:32:30,411 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:32:30,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:30,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:30,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:30,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:30,493 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:32:30,493 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:32:30,497 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:32:30,497 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:32:30,502 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:32:30,502 INFO L440 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 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:32:30,536 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:32:30,537 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:32:30,543 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:32:30,544 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=4, ULTIMATE.start_main_~z~0=4} Honda state: {ULTIMATE.start_main_#t~nondet2=4, ULTIMATE.start_main_~z~0=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:32:30,576 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:32:30,576 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:32:30,612 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:32:30,612 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:32:30,693 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:32:30,696 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:32:30,696 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:32:30,696 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:32:30,696 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:32:30,696 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:32:30,696 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:32:30,696 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:32:30,696 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:32:30,696 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 10:32:30,697 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:32:30,697 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:32:30,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:30,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:30,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:30,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:32:30,767 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:32:30,767 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:32:30,772 INFO L120 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 [2020-07-01 10:32:30,774 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:32:30,774 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:32:30,775 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:32:30,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:32:30,775 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:32:30,776 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:32:30,776 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:32:30,778 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:32:30,810 INFO L120 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 [2020-07-01 10:32:30,813 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:32:30,813 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:32:30,813 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:32:30,813 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:32:30,816 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:32:30,816 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:32:30,821 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:32:30,854 INFO L120 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 [2020-07-01 10:32:30,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:32:30,856 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:32:30,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:32:30,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:32:30,857 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:32:30,858 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:32:30,858 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:32:30,860 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:32:30,865 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:32:30,865 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:32:30,870 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:32:30,870 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:32:30,871 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:32:30,871 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-07-01 10:32:30,901 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:32:30,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:32:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:32:30,920 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:32:30,920 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:32:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:32:30,925 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:32:30,925 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:32:30,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:32:30,949 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 10:32:30,949 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 [2020-07-01 10:32:30,949 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-07-01 10:32:30,970 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 4 states. [2020-07-01 10:32:30,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 10:32:30,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 10:32:30,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-07-01 10:32:30,971 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 10:32:30,972 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:32:30,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 10:32:30,972 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:32:30,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 10:32:30,972 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:32:30,974 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2020-07-01 10:32:30,975 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:32:30,975 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2020-07-01 10:32:30,975 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 10:32:30,975 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 10:32:30,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 10:32:30,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 10:32:30,975 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:32:30,975 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:32:30,975 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:32:30,976 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 10:32:30,976 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 10:32:30,976 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:32:30,976 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 10:32:31,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:32:31 BasicIcfg [2020-07-01 10:32:31,001 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 10:32:31,004 INFO L168 Benchmark]: Toolchain (without parser) took 2829.56 ms. Allocated memory was 645.4 MB in the beginning and 750.3 MB in the end (delta: 104.9 MB). Free memory was 551.9 MB in the beginning and 701.3 MB in the end (delta: -149.4 MB). Peak memory consumption was 215.2 MB. Max. memory is 50.3 GB. [2020-07-01 10:32:31,005 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 645.4 MB. Free memory is still 574.2 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 10:32:31,005 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.45 ms. Allocated memory was 645.4 MB in the beginning and 662.2 MB in the end (delta: 16.8 MB). Free memory was 551.9 MB in the beginning and 626.5 MB in the end (delta: -74.7 MB). Peak memory consumption was 29.0 MB. Max. memory is 50.3 GB. [2020-07-01 10:32:31,006 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.26 ms. Allocated memory is still 662.2 MB. Free memory was 626.5 MB in the beginning and 625.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:32:31,006 INFO L168 Benchmark]: Boogie Preprocessor took 18.58 ms. Allocated memory is still 662.2 MB. Free memory was 625.2 MB in the beginning and 623.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:32:31,007 INFO L168 Benchmark]: RCFGBuilder took 210.69 ms. Allocated memory is still 662.2 MB. Free memory was 623.9 MB in the beginning and 610.1 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 50.3 GB. [2020-07-01 10:32:31,007 INFO L168 Benchmark]: BlockEncodingV2 took 65.67 ms. Allocated memory is still 662.2 MB. Free memory was 610.1 MB in the beginning and 603.7 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:32:31,008 INFO L168 Benchmark]: TraceAbstraction took 143.74 ms. Allocated memory is still 662.2 MB. Free memory was 603.7 MB in the beginning and 595.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 50.3 GB. [2020-07-01 10:32:31,008 INFO L168 Benchmark]: BuchiAutomizer took 2068.79 ms. Allocated memory was 662.2 MB in the beginning and 750.3 MB in the end (delta: 88.1 MB). Free memory was 594.3 MB in the beginning and 701.3 MB in the end (delta: -107.0 MB). Peak memory consumption was 240.9 MB. Max. memory is 50.3 GB. [2020-07-01 10:32:31,012 INFO L336 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, 4 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 645.4 MB. Free memory is still 574.2 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 283.45 ms. Allocated memory was 645.4 MB in the beginning and 662.2 MB in the end (delta: 16.8 MB). Free memory was 551.9 MB in the beginning and 626.5 MB in the end (delta: -74.7 MB). Peak memory consumption was 29.0 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 32.26 ms. Allocated memory is still 662.2 MB. Free memory was 626.5 MB in the beginning and 625.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.58 ms. Allocated memory is still 662.2 MB. Free memory was 625.2 MB in the beginning and 623.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 210.69 ms. Allocated memory is still 662.2 MB. Free memory was 623.9 MB in the beginning and 610.1 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 65.67 ms. Allocated memory is still 662.2 MB. Free memory was 610.1 MB in the beginning and 603.7 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 143.74 ms. Allocated memory is still 662.2 MB. Free memory was 603.7 MB in the beginning and 595.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 2068.79 ms. Allocated memory was 662.2 MB in the beginning and 750.3 MB in the end (delta: 88.1 MB). Free memory was 594.3 MB in the beginning and 701.3 MB in the end (delta: -107.0 MB). Peak memory consumption was 240.9 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: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, 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 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 3 terminating modules (0 trivial, 0 deterministic, 3 nondeterministic). One nondeterministic module has affine ranking function 2 * z + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * z + 1 and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. 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 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 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: 11 SDtfs, 15 SDslu, 0 SDs, 0 SdLazy, 26 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax169 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 10:32:31.824 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check