/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-MCR.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 18:08:28,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 18:08:28,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 18:08:28,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 18:08:28,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 18:08:28,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 18:08:28,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 18:08:28,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 18:08:28,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 18:08:28,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 18:08:28,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 18:08:28,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 18:08:28,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 18:08:28,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 18:08:28,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 18:08:28,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 18:08:28,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 18:08:28,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 18:08:28,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 18:08:28,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 18:08:28,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 18:08:28,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 18:08:28,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 18:08:28,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 18:08:28,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 18:08:28,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 18:08:28,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 18:08:28,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 18:08:28,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 18:08:28,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 18:08:28,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 18:08:28,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 18:08:28,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 18:08:28,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 18:08:28,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 18:08:28,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 18:08:28,771 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-MCR.epf [2019-12-27 18:08:28,792 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 18:08:28,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 18:08:28,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 18:08:28,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 18:08:28,798 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 18:08:28,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 18:08:28,798 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 18:08:28,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 18:08:28,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 18:08:28,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 18:08:28,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 18:08:28,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 18:08:28,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 18:08:28,800 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 18:08:28,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 18:08:28,801 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 18:08:28,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 18:08:28,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 18:08:28,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 18:08:28,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 18:08:28,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 18:08:28,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 18:08:28,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 18:08:28,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 18:08:28,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 18:08:28,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 18:08:28,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 18:08:28,804 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 18:08:28,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 18:08:28,804 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 18:08:28,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 18:08:29,060 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 18:08:29,073 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 18:08:29,077 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 18:08:29,079 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 18:08:29,079 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 18:08:29,080 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2019-12-27 18:08:29,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf01091d1/72be528dbf6c4c8d97e1e4ed2d78a2e0/FLAG699d3f87f [2019-12-27 18:08:29,691 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 18:08:29,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2019-12-27 18:08:29,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf01091d1/72be528dbf6c4c8d97e1e4ed2d78a2e0/FLAG699d3f87f [2019-12-27 18:08:29,980 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf01091d1/72be528dbf6c4c8d97e1e4ed2d78a2e0 [2019-12-27 18:08:29,988 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 18:08:29,990 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 18:08:29,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 18:08:29,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 18:08:29,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 18:08:29,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 06:08:29" (1/1) ... [2019-12-27 18:08:30,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2257a400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:08:29, skipping insertion in model container [2019-12-27 18:08:30,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 06:08:29" (1/1) ... [2019-12-27 18:08:30,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 18:08:30,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 18:08:30,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 18:08:30,545 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 18:08:30,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 18:08:30,675 INFO L208 MainTranslator]: Completed translation [2019-12-27 18:08:30,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:08:30 WrapperNode [2019-12-27 18:08:30,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 18:08:30,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 18:08:30,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 18:08:30,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 18:08:30,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:08:30" (1/1) ... [2019-12-27 18:08:30,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:08:30" (1/1) ... [2019-12-27 18:08:30,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 18:08:30,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 18:08:30,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 18:08:30,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 18:08:30,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:08:30" (1/1) ... [2019-12-27 18:08:30,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:08:30" (1/1) ... [2019-12-27 18:08:30,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:08:30" (1/1) ... [2019-12-27 18:08:30,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:08:30" (1/1) ... [2019-12-27 18:08:30,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:08:30" (1/1) ... [2019-12-27 18:08:30,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:08:30" (1/1) ... [2019-12-27 18:08:30,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:08:30" (1/1) ... [2019-12-27 18:08:30,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 18:08:30,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 18:08:30,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 18:08:30,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 18:08:30,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:08:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 18:08:30,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 18:08:30,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 18:08:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 18:08:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 18:08:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-27 18:08:30,820 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-27 18:08:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-27 18:08:30,820 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-27 18:08:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-27 18:08:30,821 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-27 18:08:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 18:08:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 18:08:30,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 18:08:30,823 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 18:08:31,162 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 18:08:31,163 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 18:08:31,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 06:08:31 BoogieIcfgContainer [2019-12-27 18:08:31,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 18:08:31,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 18:08:31,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 18:08:31,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 18:08:31,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 06:08:29" (1/3) ... [2019-12-27 18:08:31,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc2015f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 06:08:31, skipping insertion in model container [2019-12-27 18:08:31,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:08:30" (2/3) ... [2019-12-27 18:08:31,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc2015f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 06:08:31, skipping insertion in model container [2019-12-27 18:08:31,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 06:08:31" (3/3) ... [2019-12-27 18:08:31,173 INFO L109 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2019-12-27 18:08:31,182 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 18:08:31,182 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 18:08:31,188 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 18:08:31,189 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 18:08:31,218 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,219 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,219 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,219 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,220 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,220 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,220 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,221 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,221 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,221 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,221 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,222 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,222 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,222 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,222 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,223 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,223 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,223 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,227 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,228 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,228 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,228 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,234 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,235 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,235 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,235 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,243 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,244 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,244 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,244 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:08:31,260 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 18:08:31,278 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 18:08:31,278 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 18:08:31,278 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 18:08:31,278 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 18:08:31,278 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 18:08:31,279 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 18:08:31,279 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 18:08:31,279 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 18:08:31,292 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-27 18:08:31,294 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-27 18:08:31,339 INFO L132 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-27 18:08:31,340 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 18:08:31,346 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 0/49 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 18:08:31,349 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-27 18:08:31,369 INFO L132 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-27 18:08:31,369 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 18:08:31,371 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 0/49 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 18:08:31,373 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-27 18:08:31,374 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 18:08:32,735 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-12-27 18:08:32,902 INFO L206 etLargeBlockEncoding]: Checked pairs total: 467 [2019-12-27 18:08:32,903 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2019-12-27 18:08:32,906 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-27 18:08:32,918 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-27 18:08:32,920 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-27 18:08:32,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 18:08:32,931 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:08:32,932 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:08:32,932 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:08:32,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:08:32,938 INFO L82 PathProgramCache]: Analyzing trace with hash -53140901, now seen corresponding path program 1 times [2019-12-27 18:08:32,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:08:32,946 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953652516] [2019-12-27 18:08:32,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:08:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:08:33,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:08:33,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953652516] [2019-12-27 18:08:33,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:08:33,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 18:08:33,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [415679635] [2019-12-27 18:08:33,179 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:08:33,183 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:08:33,195 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 8 transitions. [2019-12-27 18:08:33,196 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:08:33,198 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:08:33,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 18:08:33,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:08:33,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 18:08:33,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 18:08:33,216 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-27 18:08:33,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:08:33,235 INFO L93 Difference]: Finished difference Result 42 states and 84 transitions. [2019-12-27 18:08:33,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 18:08:33,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-27 18:08:33,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:08:33,247 INFO L225 Difference]: With dead ends: 42 [2019-12-27 18:08:33,247 INFO L226 Difference]: Without dead ends: 34 [2019-12-27 18:08:33,249 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 18:08:33,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-27 18:08:33,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-27 18:08:33,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-27 18:08:33,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-27 18:08:33,307 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-27 18:08:33,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:08:33,308 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-27 18:08:33,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 18:08:33,309 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-27 18:08:33,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 18:08:33,311 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:08:33,312 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:08:33,315 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:08:33,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:08:33,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1647367954, now seen corresponding path program 1 times [2019-12-27 18:08:33,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:08:33,324 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523958519] [2019-12-27 18:08:33,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:08:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:08:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:08:33,415 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523958519] [2019-12-27 18:08:33,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:08:33,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 18:08:33,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1438165434] [2019-12-27 18:08:33,416 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:08:33,417 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:08:33,420 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 10 states and 9 transitions. [2019-12-27 18:08:33,420 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:08:33,420 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:08:33,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 18:08:33,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:08:33,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 18:08:33,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 18:08:33,423 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 4 states. [2019-12-27 18:08:33,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:08:33,446 INFO L93 Difference]: Finished difference Result 39 states and 68 transitions. [2019-12-27 18:08:33,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 18:08:33,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-27 18:08:33,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:08:33,447 INFO L225 Difference]: With dead ends: 39 [2019-12-27 18:08:33,447 INFO L226 Difference]: Without dead ends: 31 [2019-12-27 18:08:33,448 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 18:08:33,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-27 18:08:33,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-12-27 18:08:33,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-27 18:08:33,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 54 transitions. [2019-12-27 18:08:33,453 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 54 transitions. Word has length 9 [2019-12-27 18:08:33,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:08:33,454 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 54 transitions. [2019-12-27 18:08:33,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 18:08:33,454 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 54 transitions. [2019-12-27 18:08:33,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 18:08:33,455 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:08:33,455 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:08:33,455 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:08:33,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:08:33,456 INFO L82 PathProgramCache]: Analyzing trace with hash 445286946, now seen corresponding path program 1 times [2019-12-27 18:08:33,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:08:33,456 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330905642] [2019-12-27 18:08:33,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:08:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:08:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:08:33,552 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330905642] [2019-12-27 18:08:33,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:08:33,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 18:08:33,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1629002099] [2019-12-27 18:08:33,553 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:08:33,554 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:08:33,558 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 15 states and 18 transitions. [2019-12-27 18:08:33,558 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:08:33,605 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 1 times. [2019-12-27 18:08:33,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 18:08:33,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:08:33,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 18:08:33,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 18:08:33,606 INFO L87 Difference]: Start difference. First operand 31 states and 54 transitions. Second operand 5 states. [2019-12-27 18:08:33,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:08:33,645 INFO L93 Difference]: Finished difference Result 40 states and 61 transitions. [2019-12-27 18:08:33,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 18:08:33,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-27 18:08:33,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:08:33,647 INFO L225 Difference]: With dead ends: 40 [2019-12-27 18:08:33,648 INFO L226 Difference]: Without dead ends: 30 [2019-12-27 18:08:33,648 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-27 18:08:33,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-27 18:08:33,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2019-12-27 18:08:33,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-27 18:08:33,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 43 transitions. [2019-12-27 18:08:33,653 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 43 transitions. Word has length 10 [2019-12-27 18:08:33,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:08:33,653 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 43 transitions. [2019-12-27 18:08:33,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 18:08:33,653 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 43 transitions. [2019-12-27 18:08:33,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 18:08:33,654 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:08:33,654 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:08:33,655 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:08:33,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:08:33,655 INFO L82 PathProgramCache]: Analyzing trace with hash 420225671, now seen corresponding path program 1 times [2019-12-27 18:08:33,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:08:33,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547544133] [2019-12-27 18:08:33,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:08:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:08:33,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:08:33,696 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547544133] [2019-12-27 18:08:33,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:08:33,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 18:08:33,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [231690770] [2019-12-27 18:08:33,697 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:08:33,698 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:08:33,701 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 13 states and 14 transitions. [2019-12-27 18:08:33,701 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:08:33,702 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:08:33,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 18:08:33,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:08:33,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 18:08:33,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 18:08:33,703 INFO L87 Difference]: Start difference. First operand 28 states and 43 transitions. Second operand 3 states. [2019-12-27 18:08:33,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:08:33,722 INFO L93 Difference]: Finished difference Result 29 states and 42 transitions. [2019-12-27 18:08:33,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 18:08:33,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-27 18:08:33,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:08:33,723 INFO L225 Difference]: With dead ends: 29 [2019-12-27 18:08:33,723 INFO L226 Difference]: Without dead ends: 17 [2019-12-27 18:08:33,724 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 18:08:33,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-27 18:08:33,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-27 18:08:33,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-27 18:08:33,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-12-27 18:08:33,728 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-12-27 18:08:33,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:08:33,729 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-27 18:08:33,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 18:08:33,729 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-12-27 18:08:33,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 18:08:33,730 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:08:33,730 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:08:33,730 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:08:33,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:08:33,730 INFO L82 PathProgramCache]: Analyzing trace with hash 142093797, now seen corresponding path program 1 times [2019-12-27 18:08:33,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:08:33,731 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311958353] [2019-12-27 18:08:33,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:08:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:08:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:08:33,813 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311958353] [2019-12-27 18:08:33,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:08:33,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 18:08:33,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [103983427] [2019-12-27 18:08:33,815 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:08:33,817 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:08:33,820 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 14 states and 15 transitions. [2019-12-27 18:08:33,820 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:08:33,820 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:08:33,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 18:08:33,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:08:33,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 18:08:33,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 18:08:33,821 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-12-27 18:08:33,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:08:33,834 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2019-12-27 18:08:33,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 18:08:33,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 18:08:33,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:08:33,835 INFO L225 Difference]: With dead ends: 16 [2019-12-27 18:08:33,835 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 18:08:33,835 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 18:08:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 18:08:33,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 18:08:33,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 18:08:33,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 18:08:33,836 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-27 18:08:33,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:08:33,837 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 18:08:33,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 18:08:33,837 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 18:08:33,837 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 18:08:33,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 06:08:33 BasicIcfg [2019-12-27 18:08:33,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 18:08:33,846 INFO L168 Benchmark]: Toolchain (without parser) took 3854.03 ms. Allocated memory was 138.4 MB in the beginning and 245.9 MB in the end (delta: 107.5 MB). Free memory was 100.1 MB in the beginning and 133.1 MB in the end (delta: -33.0 MB). Peak memory consumption was 74.5 MB. Max. memory is 7.1 GB. [2019-12-27 18:08:33,847 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-12-27 18:08:33,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.90 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 99.7 MB in the beginning and 159.7 MB in the end (delta: -60.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2019-12-27 18:08:33,855 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.07 ms. Allocated memory is still 202.9 MB. Free memory was 159.7 MB in the beginning and 157.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 18:08:33,856 INFO L168 Benchmark]: Boogie Preprocessor took 30.50 ms. Allocated memory is still 202.9 MB. Free memory was 157.8 MB in the beginning and 156.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-27 18:08:33,857 INFO L168 Benchmark]: RCFGBuilder took 404.03 ms. Allocated memory is still 202.9 MB. Free memory was 155.8 MB in the beginning and 135.8 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2019-12-27 18:08:33,858 INFO L168 Benchmark]: TraceAbstraction took 2676.49 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 135.2 MB in the beginning and 133.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2019-12-27 18:08:33,868 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 683.90 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 99.7 MB in the beginning and 159.7 MB in the end (delta: -60.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.07 ms. Allocated memory is still 202.9 MB. Free memory was 159.7 MB in the beginning and 157.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.50 ms. Allocated memory is still 202.9 MB. Free memory was 157.8 MB in the beginning and 156.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.03 ms. Allocated memory is still 202.9 MB. Free memory was 155.8 MB in the beginning and 135.8 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2676.49 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 135.2 MB in the beginning and 133.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 63 ProgramPointsBefore, 21 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 230 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 1 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 467 CheckedPairsTotal, 44 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Result: SAFE, OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 29 SDslu, 61 SDs, 0 SdLazy, 37 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 919 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...