/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.epf -i ../../../trunk/examples/svcomp/pthread/stateful01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 18:46:17,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 18:46:17,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 18:46:17,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 18:46:17,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 18:46:17,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 18:46:17,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 18:46:17,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 18:46:17,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 18:46:17,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 18:46:17,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 18:46:17,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 18:46:17,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 18:46:17,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 18:46:17,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 18:46:17,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 18:46:17,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 18:46:17,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 18:46:17,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 18:46:17,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 18:46:17,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 18:46:17,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 18:46:17,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 18:46:17,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 18:46:17,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 18:46:17,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 18:46:17,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 18:46:17,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 18:46:17,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 18:46:17,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 18:46:17,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 18:46:17,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 18:46:17,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 18:46:17,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 18:46:17,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 18:46:17,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 18:46:17,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 18:46:17,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 18:46:17,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 18:46:17,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 18:46:17,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 18:46:17,470 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 [2020-04-17 18:46:17,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 18:46:17,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 18:46:17,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 18:46:17,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 18:46:17,488 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 18:46:17,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 18:46:17,489 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 18:46:17,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 18:46:17,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 18:46:17,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 18:46:17,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 18:46:17,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 18:46:17,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 18:46:17,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 18:46:17,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 18:46:17,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 18:46:17,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 18:46:17,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 18:46:17,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 18:46:17,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 18:46:17,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 18:46:17,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 18:46:17,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 18:46:17,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 18:46:17,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 18:46:17,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 18:46:17,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 18:46:17,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 18:46:17,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 18:46:17,778 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 18:46:17,792 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 18:46:17,795 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 18:46:17,797 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 18:46:17,797 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 18:46:17,798 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2020-04-17 18:46:17,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e6d1f73b/bc5db93f001e492f83befb9e1330510b/FLAG4d9fc8807 [2020-04-17 18:46:18,444 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 18:46:18,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i [2020-04-17 18:46:18,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e6d1f73b/bc5db93f001e492f83befb9e1330510b/FLAG4d9fc8807 [2020-04-17 18:46:18,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e6d1f73b/bc5db93f001e492f83befb9e1330510b [2020-04-17 18:46:18,733 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 18:46:18,750 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 18:46:18,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 18:46:18,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 18:46:18,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 18:46:18,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:46:18" (1/1) ... [2020-04-17 18:46:18,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42fab0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:18, skipping insertion in model container [2020-04-17 18:46:18,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:46:18" (1/1) ... [2020-04-17 18:46:18,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 18:46:18,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 18:46:19,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:46:19,316 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 18:46:19,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:46:19,506 INFO L208 MainTranslator]: Completed translation [2020-04-17 18:46:19,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:19 WrapperNode [2020-04-17 18:46:19,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 18:46:19,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 18:46:19,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 18:46:19,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 18:46:19,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:19" (1/1) ... [2020-04-17 18:46:19,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:19" (1/1) ... [2020-04-17 18:46:19,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 18:46:19,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 18:46:19,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 18:46:19,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 18:46:19,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:19" (1/1) ... [2020-04-17 18:46:19,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:19" (1/1) ... [2020-04-17 18:46:19,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:19" (1/1) ... [2020-04-17 18:46:19,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:19" (1/1) ... [2020-04-17 18:46:19,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:19" (1/1) ... [2020-04-17 18:46:19,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:19" (1/1) ... [2020-04-17 18:46:19,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:19" (1/1) ... [2020-04-17 18:46:19,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 18:46:19,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 18:46:19,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 18:46:19,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 18:46:19,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:19" (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 [2020-04-17 18:46:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-17 18:46:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-04-17 18:46:19,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-04-17 18:46:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-04-17 18:46:19,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-04-17 18:46:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 18:46:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-04-17 18:46:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 18:46:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 18:46:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-04-17 18:46:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 18:46:19,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 18:46:19,717 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 18:46:20,118 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 18:46:20,119 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-04-17 18:46:20,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:46:20 BoogieIcfgContainer [2020-04-17 18:46:20,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 18:46:20,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 18:46:20,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 18:46:20,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 18:46:20,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 06:46:18" (1/3) ... [2020-04-17 18:46:20,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afdd2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:46:20, skipping insertion in model container [2020-04-17 18:46:20,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:19" (2/3) ... [2020-04-17 18:46:20,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afdd2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:46:20, skipping insertion in model container [2020-04-17 18:46:20,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:46:20" (3/3) ... [2020-04-17 18:46:20,136 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2020-04-17 18:46:20,150 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 18:46:20,150 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 18:46:20,159 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 18:46:20,160 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 18:46:20,191 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,191 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,191 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,192 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,192 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,192 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,192 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,193 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,193 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,193 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,193 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,194 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,194 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,194 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,194 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,195 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,195 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,196 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,196 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,196 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,196 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,197 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,197 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,197 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,198 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,198 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,202 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,203 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,203 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,203 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,203 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,204 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,204 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,204 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,210 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,211 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,211 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,211 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,211 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,212 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:20,251 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-17 18:46:20,276 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:46:20,277 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:46:20,277 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:46:20,278 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:46:20,278 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:46:20,278 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:46:20,278 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:46:20,278 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:46:20,305 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 78 transitions, 178 flow [2020-04-17 18:46:20,307 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 78 transitions, 178 flow [2020-04-17 18:46:20,377 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-04-17 18:46:20,377 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-17 18:46:20,381 INFO L80 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 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2020-04-17 18:46:20,384 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 78 transitions, 178 flow [2020-04-17 18:46:20,408 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-04-17 18:46:20,409 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-17 18:46:20,409 INFO L80 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 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2020-04-17 18:46:20,411 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 680 [2020-04-17 18:46:20,412 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:46:22,269 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-04-17 18:46:22,840 WARN L192 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 107 [2020-04-17 18:46:23,010 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-04-17 18:46:23,026 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1930 [2020-04-17 18:46:23,027 INFO L214 etLargeBlockEncoding]: Total number of compositions: 52 [2020-04-17 18:46:23,031 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 30 transitions, 82 flow [2020-04-17 18:46:23,050 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 198 states. [2020-04-17 18:46:23,053 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-04-17 18:46:23,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 18:46:23,065 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:23,066 INFO L425 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] [2020-04-17 18:46:23,067 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:23,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:23,073 INFO L82 PathProgramCache]: Analyzing trace with hash 535203952, now seen corresponding path program 1 times [2020-04-17 18:46:23,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:23,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807937925] [2020-04-17 18:46:23,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:23,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:23,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807937925] [2020-04-17 18:46:23,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:46:23,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:46:23,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135867349] [2020-04-17 18:46:23,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:46:23,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:23,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:46:23,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:46:23,365 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 3 states. [2020-04-17 18:46:23,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:23,445 INFO L93 Difference]: Finished difference Result 150 states and 254 transitions. [2020-04-17 18:46:23,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:46:23,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-04-17 18:46:23,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:23,478 INFO L225 Difference]: With dead ends: 150 [2020-04-17 18:46:23,479 INFO L226 Difference]: Without dead ends: 149 [2020-04-17 18:46:23,480 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:46:23,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-04-17 18:46:23,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2020-04-17 18:46:23,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-04-17 18:46:23,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 253 transitions. [2020-04-17 18:46:23,561 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 253 transitions. Word has length 25 [2020-04-17 18:46:23,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:23,562 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 253 transitions. [2020-04-17 18:46:23,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:46:23,562 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 253 transitions. [2020-04-17 18:46:23,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 18:46:23,564 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:23,565 INFO L425 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] [2020-04-17 18:46:23,565 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:23,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:23,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1346228208, now seen corresponding path program 2 times [2020-04-17 18:46:23,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:23,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130619107] [2020-04-17 18:46:23,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:23,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130619107] [2020-04-17 18:46:23,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:46:23,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-17 18:46:23,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847469719] [2020-04-17 18:46:23,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:46:23,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:23,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:46:23,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:46:23,743 INFO L87 Difference]: Start difference. First operand 149 states and 253 transitions. Second operand 5 states. [2020-04-17 18:46:23,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:23,801 INFO L93 Difference]: Finished difference Result 149 states and 252 transitions. [2020-04-17 18:46:23,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:46:23,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-04-17 18:46:23,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:23,803 INFO L225 Difference]: With dead ends: 149 [2020-04-17 18:46:23,803 INFO L226 Difference]: Without dead ends: 122 [2020-04-17 18:46:23,804 INFO L678 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 [2020-04-17 18:46:23,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-04-17 18:46:23,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-04-17 18:46:23,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-04-17 18:46:23,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 201 transitions. [2020-04-17 18:46:23,824 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 201 transitions. Word has length 25 [2020-04-17 18:46:23,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:23,824 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 201 transitions. [2020-04-17 18:46:23,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:46:23,824 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 201 transitions. [2020-04-17 18:46:23,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 18:46:23,826 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:23,826 INFO L425 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] [2020-04-17 18:46:23,826 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:23,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:23,827 INFO L82 PathProgramCache]: Analyzing trace with hash 352163958, now seen corresponding path program 1 times [2020-04-17 18:46:23,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:23,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194743999] [2020-04-17 18:46:23,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:24,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194743999] [2020-04-17 18:46:24,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:46:24,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 18:46:24,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178068526] [2020-04-17 18:46:24,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 18:46:24,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:24,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 18:46:24,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-17 18:46:24,019 INFO L87 Difference]: Start difference. First operand 122 states and 201 transitions. Second operand 6 states. [2020-04-17 18:46:24,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:24,075 INFO L93 Difference]: Finished difference Result 164 states and 266 transitions. [2020-04-17 18:46:24,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 18:46:24,076 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-04-17 18:46:24,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:24,077 INFO L225 Difference]: With dead ends: 164 [2020-04-17 18:46:24,078 INFO L226 Difference]: Without dead ends: 98 [2020-04-17 18:46:24,078 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-17 18:46:24,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-17 18:46:24,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-04-17 18:46:24,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-04-17 18:46:24,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 161 transitions. [2020-04-17 18:46:24,085 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 161 transitions. Word has length 25 [2020-04-17 18:46:24,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:24,085 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 161 transitions. [2020-04-17 18:46:24,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 18:46:24,086 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 161 transitions. [2020-04-17 18:46:24,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 18:46:24,087 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:24,087 INFO L425 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] [2020-04-17 18:46:24,087 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:24,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:24,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1213192784, now seen corresponding path program 2 times [2020-04-17 18:46:24,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:24,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243492909] [2020-04-17 18:46:24,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:24,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:24,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243492909] [2020-04-17 18:46:24,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:46:24,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 18:46:24,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335599705] [2020-04-17 18:46:24,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 18:46:24,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:24,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 18:46:24,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-17 18:46:24,185 INFO L87 Difference]: Start difference. First operand 98 states and 161 transitions. Second operand 6 states. [2020-04-17 18:46:24,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:24,230 INFO L93 Difference]: Finished difference Result 97 states and 160 transitions. [2020-04-17 18:46:24,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 18:46:24,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-04-17 18:46:24,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:24,236 INFO L225 Difference]: With dead ends: 97 [2020-04-17 18:46:24,236 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 18:46:24,237 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-17 18:46:24,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 18:46:24,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 18:46:24,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 18:46:24,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 18:46:24,238 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-04-17 18:46:24,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:24,238 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 18:46:24,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 18:46:24,238 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 18:46:24,238 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 18:46:24,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 06:46:24 BasicIcfg [2020-04-17 18:46:24,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 18:46:24,245 INFO L168 Benchmark]: Toolchain (without parser) took 5510.15 ms. Allocated memory was 135.3 MB in the beginning and 255.9 MB in the end (delta: 120.6 MB). Free memory was 98.6 MB in the beginning and 174.5 MB in the end (delta: -75.9 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. [2020-04-17 18:46:24,246 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 135.3 MB. Free memory is still 118.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 18:46:24,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 757.18 ms. Allocated memory was 135.3 MB in the beginning and 199.2 MB in the end (delta: 64.0 MB). Free memory was 96.4 MB in the beginning and 156.5 MB in the end (delta: -60.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-04-17 18:46:24,248 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.54 ms. Allocated memory is still 199.2 MB. Free memory was 156.5 MB in the beginning and 154.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 18:46:24,248 INFO L168 Benchmark]: Boogie Preprocessor took 52.32 ms. Allocated memory is still 199.2 MB. Free memory was 154.4 MB in the beginning and 152.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 18:46:24,249 INFO L168 Benchmark]: RCFGBuilder took 478.36 ms. Allocated memory is still 199.2 MB. Free memory was 152.3 MB in the beginning and 128.9 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-04-17 18:46:24,250 INFO L168 Benchmark]: TraceAbstraction took 4116.42 ms. Allocated memory was 199.2 MB in the beginning and 255.9 MB in the end (delta: 56.6 MB). Free memory was 127.9 MB in the beginning and 174.5 MB in the end (delta: -46.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-04-17 18:46:24,254 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 135.3 MB. Free memory is still 118.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 757.18 ms. Allocated memory was 135.3 MB in the beginning and 199.2 MB in the end (delta: 64.0 MB). Free memory was 96.4 MB in the beginning and 156.5 MB in the end (delta: -60.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 81.54 ms. Allocated memory is still 199.2 MB. Free memory was 156.5 MB in the beginning and 154.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.32 ms. Allocated memory is still 199.2 MB. Free memory was 154.4 MB in the beginning and 152.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 478.36 ms. Allocated memory is still 199.2 MB. Free memory was 152.3 MB in the beginning and 128.9 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4116.42 ms. Allocated memory was 199.2 MB in the beginning and 255.9 MB in the end (delta: 56.6 MB). Free memory was 127.9 MB in the beginning and 174.5 MB in the end (delta: -46.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.7s, 82 ProgramPointsBefore, 35 ProgramPointsAfterwards, 78 TransitionsBefore, 30 TransitionsAfterwards, 680 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 289 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 1930 CheckedPairsTotal, 52 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. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 148 SDtfs, 80 SDslu, 267 SDs, 0 SdLazy, 60 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 4 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...