/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/stateful01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 15:12:22,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 15:12:22,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 15:12:22,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 15:12:22,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 15:12:22,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 15:12:22,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 15:12:22,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 15:12:22,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 15:12:22,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 15:12:22,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 15:12:22,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 15:12:22,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 15:12:22,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 15:12:22,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 15:12:22,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 15:12:22,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 15:12:22,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 15:12:22,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 15:12:22,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 15:12:22,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 15:12:22,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 15:12:22,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 15:12:22,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 15:12:22,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 15:12:22,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 15:12:22,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 15:12:22,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 15:12:22,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 15:12:22,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 15:12:22,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 15:12:22,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 15:12:22,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 15:12:22,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 15:12:22,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 15:12:22,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 15:12:22,498 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 15:12:22,512 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 15:12:22,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 15:12:22,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 15:12:22,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 15:12:22,514 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 15:12:22,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 15:12:22,514 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 15:12:22,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 15:12:22,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 15:12:22,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 15:12:22,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 15:12:22,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 15:12:22,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 15:12:22,515 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 15:12:22,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 15:12:22,516 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 15:12:22,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 15:12:22,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 15:12:22,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 15:12:22,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 15:12:22,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 15:12:22,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 15:12:22,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 15:12:22,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 15:12:22,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 15:12:22,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 15:12:22,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 15:12:22,518 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 15:12:22,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 15:12:22,519 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 15:12:22,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 15:12:22,815 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 15:12:22,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 15:12:22,835 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 15:12:22,836 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 15:12:22,837 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 15:12:22,837 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2019-12-27 15:12:22,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d48f972b4/9bcedd22498140e78568931bc856a5f6/FLAGef09fb449 [2019-12-27 15:12:23,467 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 15:12:23,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i [2019-12-27 15:12:23,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d48f972b4/9bcedd22498140e78568931bc856a5f6/FLAGef09fb449 [2019-12-27 15:12:23,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d48f972b4/9bcedd22498140e78568931bc856a5f6 [2019-12-27 15:12:23,745 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 15:12:23,749 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 15:12:23,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 15:12:23,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 15:12:23,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 15:12:23,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 03:12:23" (1/1) ... [2019-12-27 15:12:23,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f0f95ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:23, skipping insertion in model container [2019-12-27 15:12:23,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 03:12:23" (1/1) ... [2019-12-27 15:12:23,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 15:12:23,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 15:12:24,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 15:12:24,320 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 15:12:24,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 15:12:24,501 INFO L208 MainTranslator]: Completed translation [2019-12-27 15:12:24,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:24 WrapperNode [2019-12-27 15:12:24,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 15:12:24,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 15:12:24,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 15:12:24,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 15:12:24,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:24" (1/1) ... [2019-12-27 15:12:24,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:24" (1/1) ... [2019-12-27 15:12:24,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 15:12:24,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 15:12:24,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 15:12:24,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 15:12:24,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:24" (1/1) ... [2019-12-27 15:12:24,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:24" (1/1) ... [2019-12-27 15:12:24,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:24" (1/1) ... [2019-12-27 15:12:24,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:24" (1/1) ... [2019-12-27 15:12:24,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:24" (1/1) ... [2019-12-27 15:12:24,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:24" (1/1) ... [2019-12-27 15:12:24,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:24" (1/1) ... [2019-12-27 15:12:24,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 15:12:24,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 15:12:24,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 15:12:24,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 15:12:24,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:24" (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 15:12:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-27 15:12:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2019-12-27 15:12:24,708 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2019-12-27 15:12:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2019-12-27 15:12:24,708 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2019-12-27 15:12:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 15:12:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-12-27 15:12:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 15:12:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 15:12:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-27 15:12:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 15:12:24,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 15:12:24,711 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 15:12:25,127 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 15:12:25,128 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-27 15:12:25,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 03:12:25 BoogieIcfgContainer [2019-12-27 15:12:25,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 15:12:25,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 15:12:25,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 15:12:25,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 15:12:25,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 03:12:23" (1/3) ... [2019-12-27 15:12:25,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651e77f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 03:12:25, skipping insertion in model container [2019-12-27 15:12:25,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:24" (2/3) ... [2019-12-27 15:12:25,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651e77f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 03:12:25, skipping insertion in model container [2019-12-27 15:12:25,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 03:12:25" (3/3) ... [2019-12-27 15:12:25,138 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2019-12-27 15:12:25,148 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 15:12:25,149 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 15:12:25,156 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 15:12:25,157 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 15:12:25,186 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,187 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,187 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,187 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,188 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,188 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,188 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,189 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,189 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,189 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,190 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,190 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,190 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,191 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,191 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,191 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,192 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,192 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,192 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,192 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,193 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,193 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,193 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,194 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,194 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,194 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,199 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,199 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,200 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,200 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,200 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,201 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,201 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,201 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,207 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,207 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,208 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,208 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,208 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,209 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:25,233 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-27 15:12:25,254 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 15:12:25,254 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 15:12:25,254 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 15:12:25,255 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 15:12:25,255 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 15:12:25,255 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 15:12:25,255 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 15:12:25,255 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 15:12:25,271 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 78 transitions [2019-12-27 15:12:25,273 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 78 transitions [2019-12-27 15:12:25,329 INFO L132 PetriNetUnfolder]: 2/78 cut-off events. [2019-12-27 15:12:25,329 INFO L133 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2019-12-27 15:12:25,335 INFO L76 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 78 events. 2/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs. 0/76 useless extension candidates. Maximal degree in co-relation 46. Up to 3 conditions per place. [2019-12-27 15:12:25,338 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 78 transitions [2019-12-27 15:12:25,364 INFO L132 PetriNetUnfolder]: 2/78 cut-off events. [2019-12-27 15:12:25,365 INFO L133 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2019-12-27 15:12:25,367 INFO L76 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 78 events. 2/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs. 0/76 useless extension candidates. Maximal degree in co-relation 46. Up to 3 conditions per place. [2019-12-27 15:12:25,369 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 680 [2019-12-27 15:12:25,370 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 15:12:27,124 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-12-27 15:12:27,655 WARN L192 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 107 [2019-12-27 15:12:27,840 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-12-27 15:12:27,850 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1930 [2019-12-27 15:12:27,850 INFO L214 etLargeBlockEncoding]: Total number of compositions: 51 [2019-12-27 15:12:27,854 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 30 transitions [2019-12-27 15:12:27,872 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 198 states. [2019-12-27 15:12:27,875 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2019-12-27 15:12:27,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-27 15:12:27,887 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:12:27,888 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 15:12:27,888 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:12:27,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:12:27,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1542005391, now seen corresponding path program 1 times [2019-12-27 15:12:27,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:12:27,908 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986906912] [2019-12-27 15:12:27,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:12:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:12:28,237 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 15:12:28,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986906912] [2019-12-27 15:12:28,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:12:28,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 15:12:28,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [978392544] [2019-12-27 15:12:28,245 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:12:28,257 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:12:28,304 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 79 states and 140 transitions. [2019-12-27 15:12:28,305 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:12:28,312 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 1 times. [2019-12-27 15:12:28,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 15:12:28,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:12:28,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 15:12:28,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 15:12:28,331 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 3 states. [2019-12-27 15:12:28,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:12:28,388 INFO L93 Difference]: Finished difference Result 150 states and 254 transitions. [2019-12-27 15:12:28,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 15:12:28,390 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-12-27 15:12:28,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:12:28,400 INFO L225 Difference]: With dead ends: 150 [2019-12-27 15:12:28,400 INFO L226 Difference]: Without dead ends: 149 [2019-12-27 15:12:28,401 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 15:12:28,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2019-12-27 15:12:28,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2019-12-27 15:12:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-12-27 15:12:28,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 253 transitions. [2019-12-27 15:12:28,444 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 253 transitions. Word has length 25 [2019-12-27 15:12:28,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:12:28,445 INFO L462 AbstractCegarLoop]: Abstraction has 149 states and 253 transitions. [2019-12-27 15:12:28,445 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 15:12:28,445 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 253 transitions. [2019-12-27 15:12:28,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-27 15:12:28,447 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:12:28,448 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 15:12:28,448 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:12:28,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:12:28,448 INFO L82 PathProgramCache]: Analyzing trace with hash -730981135, now seen corresponding path program 2 times [2019-12-27 15:12:28,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:12:28,449 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172644776] [2019-12-27 15:12:28,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:12:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:12:28,545 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 15:12:28,546 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172644776] [2019-12-27 15:12:28,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:12:28,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-27 15:12:28,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [942104459] [2019-12-27 15:12:28,547 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:12:28,552 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:12:28,568 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 64 states and 101 transitions. [2019-12-27 15:12:28,568 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:12:28,569 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 15:12:28,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 15:12:28,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:12:28,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 15:12:28,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-27 15:12:28,572 INFO L87 Difference]: Start difference. First operand 149 states and 253 transitions. Second operand 5 states. [2019-12-27 15:12:28,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:12:28,653 INFO L93 Difference]: Finished difference Result 149 states and 252 transitions. [2019-12-27 15:12:28,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 15:12:28,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-12-27 15:12:28,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:12:28,655 INFO L225 Difference]: With dead ends: 149 [2019-12-27 15:12:28,659 INFO L226 Difference]: Without dead ends: 122 [2019-12-27 15:12:28,660 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-27 15:12:28,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-12-27 15:12:28,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2019-12-27 15:12:28,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-12-27 15:12:28,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 201 transitions. [2019-12-27 15:12:28,678 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 201 transitions. Word has length 25 [2019-12-27 15:12:28,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:12:28,678 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 201 transitions. [2019-12-27 15:12:28,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 15:12:28,678 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 201 transitions. [2019-12-27 15:12:28,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-27 15:12:28,680 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:12:28,680 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 15:12:28,680 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:12:28,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:12:28,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1725045385, now seen corresponding path program 1 times [2019-12-27 15:12:28,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:12:28,684 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991929269] [2019-12-27 15:12:28,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:12:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:12:28,902 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 15:12:28,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991929269] [2019-12-27 15:12:28,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:12:28,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 15:12:28,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [87333028] [2019-12-27 15:12:28,904 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:12:28,910 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:12:28,916 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 40 states and 53 transitions. [2019-12-27 15:12:28,916 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:12:28,919 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 2 times. [2019-12-27 15:12:28,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 15:12:28,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:12:28,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 15:12:28,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-27 15:12:28,920 INFO L87 Difference]: Start difference. First operand 122 states and 201 transitions. Second operand 6 states. [2019-12-27 15:12:28,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:12:28,978 INFO L93 Difference]: Finished difference Result 164 states and 266 transitions. [2019-12-27 15:12:28,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 15:12:28,978 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-12-27 15:12:28,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:12:28,980 INFO L225 Difference]: With dead ends: 164 [2019-12-27 15:12:28,980 INFO L226 Difference]: Without dead ends: 98 [2019-12-27 15:12:28,980 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-12-27 15:12:28,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-12-27 15:12:28,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2019-12-27 15:12:28,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-12-27 15:12:28,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 161 transitions. [2019-12-27 15:12:28,988 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 161 transitions. Word has length 25 [2019-12-27 15:12:28,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:12:28,988 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 161 transitions. [2019-12-27 15:12:28,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 15:12:28,990 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 161 transitions. [2019-12-27 15:12:28,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-27 15:12:28,991 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:12:28,991 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 15:12:28,991 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:12:28,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:12:28,992 INFO L82 PathProgramCache]: Analyzing trace with hash -864016559, now seen corresponding path program 2 times [2019-12-27 15:12:28,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:12:28,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522653640] [2019-12-27 15:12:28,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:12:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:12:29,125 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 15:12:29,125 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522653640] [2019-12-27 15:12:29,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:12:29,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 15:12:29,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [877420269] [2019-12-27 15:12:29,127 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:12:29,131 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:12:29,142 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 57 states and 87 transitions. [2019-12-27 15:12:29,142 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:12:29,149 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 6 times. [2019-12-27 15:12:29,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 15:12:29,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:12:29,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 15:12:29,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-27 15:12:29,151 INFO L87 Difference]: Start difference. First operand 98 states and 161 transitions. Second operand 6 states. [2019-12-27 15:12:29,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:12:29,189 INFO L93 Difference]: Finished difference Result 97 states and 160 transitions. [2019-12-27 15:12:29,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 15:12:29,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-12-27 15:12:29,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:12:29,193 INFO L225 Difference]: With dead ends: 97 [2019-12-27 15:12:29,193 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 15:12:29,193 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-12-27 15:12:29,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 15:12:29,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 15:12:29,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 15:12:29,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 15:12:29,194 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-12-27 15:12:29,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:12:29,194 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 15:12:29,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 15:12:29,197 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 15:12:29,197 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 15:12:29,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 03:12:29 BasicIcfg [2019-12-27 15:12:29,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 15:12:29,204 INFO L168 Benchmark]: Toolchain (without parser) took 5456.08 ms. Allocated memory was 140.0 MB in the beginning and 246.4 MB in the end (delta: 106.4 MB). Free memory was 100.8 MB in the beginning and 96.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 111.2 MB. Max. memory is 7.1 GB. [2019-12-27 15:12:29,205 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 140.0 MB. Free memory is still 119.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-12-27 15:12:29,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 751.96 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 100.4 MB in the beginning and 163.0 MB in the end (delta: -62.6 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2019-12-27 15:12:29,207 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.96 ms. Allocated memory is still 203.9 MB. Free memory was 163.0 MB in the beginning and 161.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-12-27 15:12:29,207 INFO L168 Benchmark]: Boogie Preprocessor took 56.33 ms. Allocated memory is still 203.9 MB. Free memory was 161.1 MB in the beginning and 159.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-12-27 15:12:29,208 INFO L168 Benchmark]: RCFGBuilder took 490.63 ms. Allocated memory is still 203.9 MB. Free memory was 159.2 MB in the beginning and 135.4 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2019-12-27 15:12:29,209 INFO L168 Benchmark]: TraceAbstraction took 4070.10 ms. Allocated memory was 203.9 MB in the beginning and 246.4 MB in the end (delta: 42.5 MB). Free memory was 135.4 MB in the beginning and 96.0 MB in the end (delta: 39.4 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. [2019-12-27 15:12:29,214 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 140.0 MB. Free memory is still 119.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 751.96 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 100.4 MB in the beginning and 163.0 MB in the end (delta: -62.6 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 78.96 ms. Allocated memory is still 203.9 MB. Free memory was 163.0 MB in the beginning and 161.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.33 ms. Allocated memory is still 203.9 MB. Free memory was 161.1 MB in the beginning and 159.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 490.63 ms. Allocated memory is still 203.9 MB. Free memory was 159.2 MB in the beginning and 135.4 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4070.10 ms. Allocated memory was 203.9 MB in the beginning and 246.4 MB in the end (delta: 42.5 MB). Free memory was 135.4 MB in the beginning and 96.0 MB in the end (delta: 39.4 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.5s, 82 ProgramPointsBefore, 34 ProgramPointsAfterwards, 78 TransitionsBefore, 30 TransitionsAfterwards, 680 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 289 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1930 CheckedPairsTotal, 51 TotalNumberOfCompositions - PositiveResult [Line: 708]: 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 3 procedures, 76 locations, 1 error locations. Result: SAFE, OverallTime: 3.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 148 SDtfs, 61 SDslu, 267 SDs, 0 SdLazy, 60 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 12048 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...