/usr/bin/java -Xmx16000000000 -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.epf -i ../../../trunk/examples/svcomp/pthread/sync01.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 20:20:48,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 20:20:48,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 20:20:48,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 20:20:48,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 20:20:48,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 20:20:48,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 20:20:48,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 20:20:48,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 20:20:48,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 20:20:48,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 20:20:48,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 20:20:48,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 20:20:48,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 20:20:48,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 20:20:48,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 20:20:48,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 20:20:48,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 20:20:48,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 20:20:48,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 20:20:48,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 20:20:48,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 20:20:48,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 20:20:48,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 20:20:48,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 20:20:48,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 20:20:48,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 20:20:48,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 20:20:48,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 20:20:48,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 20:20:48,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 20:20:48,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 20:20:48,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 20:20:48,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 20:20:48,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 20:20:48,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 20:20:48,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 20:20:48,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 20:20:48,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 20:20:48,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 20:20:48,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 20:20:48,422 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.epf [2020-10-15 20:20:48,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 20:20:48,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 20:20:48,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 20:20:48,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 20:20:48,460 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 20:20:48,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 20:20:48,461 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 20:20:48,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 20:20:48,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 20:20:48,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 20:20:48,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 20:20:48,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 20:20:48,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 20:20:48,462 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 20:20:48,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 20:20:48,463 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 20:20:48,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 20:20:48,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 20:20:48,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 20:20:48,465 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 20:20:48,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 20:20:48,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 20:20:48,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 20:20:48,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 20:20:48,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 20:20:48,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 20:20:48,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 20:20:48,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 20:20:48,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 20:20:48,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 20:20:48,792 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 20:20:48,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 20:20:48,800 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 20:20:48,800 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 20:20:48,801 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sync01.i [2020-10-15 20:20:48,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd6f666df/0415999692f549e3b0071c32fe279e55/FLAG67e257756 [2020-10-15 20:20:49,441 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 20:20:49,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i [2020-10-15 20:20:49,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd6f666df/0415999692f549e3b0071c32fe279e55/FLAG67e257756 [2020-10-15 20:20:49,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd6f666df/0415999692f549e3b0071c32fe279e55 [2020-10-15 20:20:49,744 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 20:20:49,746 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 20:20:49,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 20:20:49,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 20:20:49,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 20:20:49,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:20:49" (1/1) ... [2020-10-15 20:20:49,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c285691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:20:49, skipping insertion in model container [2020-10-15 20:20:49,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:20:49" (1/1) ... [2020-10-15 20:20:49,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 20:20:49,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 20:20:50,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 20:20:50,650 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 20:20:50,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 20:20:50,899 INFO L208 MainTranslator]: Completed translation [2020-10-15 20:20:50,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:20:50 WrapperNode [2020-10-15 20:20:50,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 20:20:50,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 20:20:50,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 20:20:50,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 20:20:50,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:20:50" (1/1) ... [2020-10-15 20:20:50,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:20:50" (1/1) ... [2020-10-15 20:20:50,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 20:20:50,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 20:20:50,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 20:20:50,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 20:20:50,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:20:50" (1/1) ... [2020-10-15 20:20:50,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:20:50" (1/1) ... [2020-10-15 20:20:50,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:20:50" (1/1) ... [2020-10-15 20:20:50,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:20:50" (1/1) ... [2020-10-15 20:20:51,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:20:50" (1/1) ... [2020-10-15 20:20:51,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:20:50" (1/1) ... [2020-10-15 20:20:51,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:20:50" (1/1) ... [2020-10-15 20:20:51,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 20:20:51,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 20:20:51,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 20:20:51,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 20:20:51,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:20:50" (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 [2020-10-15 20:20:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 20:20:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 20:20:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 20:20:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-10-15 20:20:51,098 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-10-15 20:20:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-10-15 20:20:51,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-10-15 20:20:51,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 20:20:51,100 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-15 20:20:51,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-15 20:20:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 20:20:51,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 20:20:51,106 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 20:20:51,559 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 20:20:51,559 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-15 20:20:51,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:20:51 BoogieIcfgContainer [2020-10-15 20:20:51,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 20:20:51,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 20:20:51,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 20:20:51,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 20:20:51,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:20:49" (1/3) ... [2020-10-15 20:20:51,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100480f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:20:51, skipping insertion in model container [2020-10-15 20:20:51,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:20:50" (2/3) ... [2020-10-15 20:20:51,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100480f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:20:51, skipping insertion in model container [2020-10-15 20:20:51,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:20:51" (3/3) ... [2020-10-15 20:20:51,571 INFO L111 eAbstractionObserver]: Analyzing ICFG sync01.i [2020-10-15 20:20:51,582 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 20:20:51,583 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 20:20:51,591 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 20:20:51,592 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 20:20:51,620 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,620 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,621 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,621 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,621 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,621 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,622 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,622 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,622 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,623 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,623 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,623 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,623 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,624 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,624 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,624 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,625 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,625 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,625 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,626 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,626 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,626 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,626 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,627 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,627 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,627 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,631 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,631 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,631 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,631 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,639 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,640 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,640 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,640 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,640 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:20:51,662 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-15 20:20:51,684 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 20:20:51,684 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 20:20:51,684 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 20:20:51,685 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 20:20:51,685 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 20:20:51,685 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 20:20:51,685 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 20:20:51,685 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 20:20:51,700 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 20:20:51,703 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 91 transitions, 204 flow [2020-10-15 20:20:51,706 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 91 transitions, 204 flow [2020-10-15 20:20:51,708 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 91 transitions, 204 flow [2020-10-15 20:20:51,763 INFO L129 PetriNetUnfolder]: 6/91 cut-off events. [2020-10-15 20:20:51,763 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-15 20:20:51,769 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 91 events. 6/91 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 55. Up to 3 conditions per place. [2020-10-15 20:20:51,772 INFO L117 LiptonReduction]: Number of co-enabled transitions 840 [2020-10-15 20:20:53,473 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-15 20:20:53,736 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-15 20:20:54,443 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 147 [2020-10-15 20:20:54,753 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-15 20:20:54,766 INFO L132 LiptonReduction]: Checked pairs total: 3301 [2020-10-15 20:20:54,766 INFO L134 LiptonReduction]: Total number of compositions: 68 [2020-10-15 20:20:54,772 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 34 transitions, 90 flow [2020-10-15 20:20:54,792 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 198 states. [2020-10-15 20:20:54,794 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-10-15 20:20:54,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:20:54,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:20:54,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:20:54,808 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:20:54,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:20:54,814 INFO L82 PathProgramCache]: Analyzing trace with hash -495198352, now seen corresponding path program 1 times [2020-10-15 20:20:54,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:20:54,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730705602] [2020-10-15 20:20:54,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:20:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:20:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:20:55,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730705602] [2020-10-15 20:20:55,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:20:55,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 20:20:55,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039491039] [2020-10-15 20:20:55,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-15 20:20:55,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:20:55,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-15 20:20:55,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 20:20:55,061 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 2 states. [2020-10-15 20:20:55,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:20:55,091 INFO L93 Difference]: Finished difference Result 198 states and 455 transitions. [2020-10-15 20:20:55,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-15 20:20:55,092 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-10-15 20:20:55,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:20:55,105 INFO L225 Difference]: With dead ends: 198 [2020-10-15 20:20:55,105 INFO L226 Difference]: Without dead ends: 197 [2020-10-15 20:20:55,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 20:20:55,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-15 20:20:55,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2020-10-15 20:20:55,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-15 20:20:55,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 454 transitions. [2020-10-15 20:20:55,161 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 454 transitions. Word has length 15 [2020-10-15 20:20:55,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:20:55,162 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 454 transitions. [2020-10-15 20:20:55,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-15 20:20:55,162 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 454 transitions. [2020-10-15 20:20:55,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 20:20:55,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:20:55,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:20:55,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 20:20:55,166 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:20:55,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:20:55,167 INFO L82 PathProgramCache]: Analyzing trace with hash 279879984, now seen corresponding path program 1 times [2020-10-15 20:20:55,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:20:55,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829044897] [2020-10-15 20:20:55,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:20:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:20:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:20:55,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829044897] [2020-10-15 20:20:55,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:20:55,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 20:20:55,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930718475] [2020-10-15 20:20:55,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:20:55,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:20:55,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:20:55,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:20:55,280 INFO L87 Difference]: Start difference. First operand 197 states and 454 transitions. Second operand 3 states. [2020-10-15 20:20:55,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:20:55,311 INFO L93 Difference]: Finished difference Result 107 states and 223 transitions. [2020-10-15 20:20:55,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:20:55,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-15 20:20:55,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:20:55,313 INFO L225 Difference]: With dead ends: 107 [2020-10-15 20:20:55,313 INFO L226 Difference]: Without dead ends: 107 [2020-10-15 20:20:55,314 INFO L677 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 [2020-10-15 20:20:55,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-15 20:20:55,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-15 20:20:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-15 20:20:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 223 transitions. [2020-10-15 20:20:55,324 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 223 transitions. Word has length 21 [2020-10-15 20:20:55,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:20:55,325 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 223 transitions. [2020-10-15 20:20:55,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:20:55,325 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 223 transitions. [2020-10-15 20:20:55,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 20:20:55,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:20:55,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:20:55,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 20:20:55,327 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:20:55,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:20:55,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1077149356, now seen corresponding path program 2 times [2020-10-15 20:20:55,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:20:55,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882588984] [2020-10-15 20:20:55,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:20:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:20:55,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:20:55,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882588984] [2020-10-15 20:20:55,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:20:55,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 20:20:55,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152412723] [2020-10-15 20:20:55,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 20:20:55,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:20:55,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 20:20:55,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 20:20:55,434 INFO L87 Difference]: Start difference. First operand 107 states and 223 transitions. Second operand 5 states. [2020-10-15 20:20:55,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:20:55,509 INFO L93 Difference]: Finished difference Result 80 states and 137 transitions. [2020-10-15 20:20:55,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 20:20:55,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-15 20:20:55,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:20:55,511 INFO L225 Difference]: With dead ends: 80 [2020-10-15 20:20:55,511 INFO L226 Difference]: Without dead ends: 80 [2020-10-15 20:20:55,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 20:20:55,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-15 20:20:55,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-15 20:20:55,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-15 20:20:55,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 137 transitions. [2020-10-15 20:20:55,517 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 137 transitions. Word has length 21 [2020-10-15 20:20:55,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:20:55,518 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 137 transitions. [2020-10-15 20:20:55,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 20:20:55,518 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 137 transitions. [2020-10-15 20:20:55,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 20:20:55,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:20:55,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:20:55,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 20:20:55,520 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:20:55,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:20:55,520 INFO L82 PathProgramCache]: Analyzing trace with hash 2113878624, now seen corresponding path program 3 times [2020-10-15 20:20:55,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:20:55,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397229543] [2020-10-15 20:20:55,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:20:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:20:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:20:55,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397229543] [2020-10-15 20:20:55,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:20:55,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 20:20:55,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206198044] [2020-10-15 20:20:55,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 20:20:55,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:20:55,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 20:20:55,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 20:20:55,607 INFO L87 Difference]: Start difference. First operand 80 states and 137 transitions. Second operand 7 states. [2020-10-15 20:20:55,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:20:55,690 INFO L93 Difference]: Finished difference Result 80 states and 136 transitions. [2020-10-15 20:20:55,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 20:20:55,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-15 20:20:55,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:20:55,691 INFO L225 Difference]: With dead ends: 80 [2020-10-15 20:20:55,691 INFO L226 Difference]: Without dead ends: 56 [2020-10-15 20:20:55,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-15 20:20:55,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-15 20:20:55,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-15 20:20:55,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-15 20:20:55,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2020-10-15 20:20:55,696 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 21 [2020-10-15 20:20:55,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:20:55,696 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2020-10-15 20:20:55,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 20:20:55,697 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2020-10-15 20:20:55,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 20:20:55,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:20:55,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:20:55,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 20:20:55,698 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:20:55,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:20:55,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1774524060, now seen corresponding path program 1 times [2020-10-15 20:20:55,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:20:55,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194545575] [2020-10-15 20:20:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:20:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:20:55,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:20:55,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194545575] [2020-10-15 20:20:55,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:20:55,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 20:20:55,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611579911] [2020-10-15 20:20:55,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 20:20:55,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:20:55,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 20:20:55,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-15 20:20:55,835 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 7 states. [2020-10-15 20:20:55,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:20:55,902 INFO L93 Difference]: Finished difference Result 53 states and 82 transitions. [2020-10-15 20:20:55,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 20:20:55,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-15 20:20:55,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:20:55,907 INFO L225 Difference]: With dead ends: 53 [2020-10-15 20:20:55,907 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 20:20:55,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 20:20:55,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 20:20:55,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 20:20:55,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 20:20:55,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 20:20:55,909 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-10-15 20:20:55,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:20:55,909 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 20:20:55,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 20:20:55,909 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 20:20:55,910 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 20:20:55,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 20:20:55,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:20:55 BasicIcfg [2020-10-15 20:20:55,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 20:20:55,915 INFO L168 Benchmark]: Toolchain (without parser) took 6169.40 ms. Allocated memory was 250.6 MB in the beginning and 429.4 MB in the end (delta: 178.8 MB). Free memory was 207.0 MB in the beginning and 283.9 MB in the end (delta: -76.9 MB). Peak memory consumption was 101.9 MB. Max. memory is 14.2 GB. [2020-10-15 20:20:55,915 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 20:20:55,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1153.94 ms. Allocated memory was 250.6 MB in the beginning and 310.9 MB in the end (delta: 60.3 MB). Free memory was 207.0 MB in the beginning and 241.9 MB in the end (delta: -34.9 MB). Peak memory consumption was 35.6 MB. Max. memory is 14.2 GB. [2020-10-15 20:20:55,917 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.28 ms. Allocated memory is still 310.9 MB. Free memory was 241.9 MB in the beginning and 239.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 20:20:55,918 INFO L168 Benchmark]: Boogie Preprocessor took 50.73 ms. Allocated memory is still 310.9 MB. Free memory is still 239.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 20:20:55,919 INFO L168 Benchmark]: RCFGBuilder took 539.26 ms. Allocated memory is still 310.9 MB. Free memory was 239.4 MB in the beginning and 212.5 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-15 20:20:55,920 INFO L168 Benchmark]: TraceAbstraction took 4349.68 ms. Allocated memory was 310.9 MB in the beginning and 429.4 MB in the end (delta: 118.5 MB). Free memory was 210.0 MB in the beginning and 283.9 MB in the end (delta: -73.9 MB). Peak memory consumption was 44.5 MB. Max. memory is 14.2 GB. [2020-10-15 20:20:55,924 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 1153.94 ms. Allocated memory was 250.6 MB in the beginning and 310.9 MB in the end (delta: 60.3 MB). Free memory was 207.0 MB in the beginning and 241.9 MB in the end (delta: -34.9 MB). Peak memory consumption was 35.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 70.28 ms. Allocated memory is still 310.9 MB. Free memory was 241.9 MB in the beginning and 239.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 50.73 ms. Allocated memory is still 310.9 MB. Free memory is still 239.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 539.26 ms. Allocated memory is still 310.9 MB. Free memory was 239.4 MB in the beginning and 212.5 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4349.68 ms. Allocated memory was 310.9 MB in the beginning and 429.4 MB in the end (delta: 118.5 MB). Free memory was 210.0 MB in the beginning and 283.9 MB in the end (delta: -73.9 MB). Peak memory consumption was 44.5 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 630 VarBasedMoverChecksPositive, 55 VarBasedMoverChecksNegative, 24 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 222 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 91 PlacesBefore, 35 PlacesAfterwards, 91 TransitionsBefore, 34 TransitionsAfterwards, 840 CoEnabledTransitionPairs, 6 FixpointIterations, 43 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 68 TotalNumberOfCompositions, 3301 MoverChecksTotal - PositiveResult [Line: 947]: 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, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 130 SDtfs, 112 SDslu, 159 SDs, 0 SdLazy, 121 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 5876 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...