/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-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:45:51,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:45:51,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:45:51,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:45:51,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:45:51,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:45:51,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:45:51,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:45:51,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:45:51,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:45:51,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:45:51,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:45:51,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:45:51,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:45:51,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:45:51,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:45:51,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:45:51,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:45:51,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:45:51,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:45:51,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:45:51,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:45:51,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:45:51,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:45:51,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:45:51,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:45:51,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:45:51,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:45:51,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:45:51,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:45:51,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:45:51,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:45:51,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:45:51,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:45:51,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:45:51,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:45:51,440 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-PN-SemanticLbe.epf [2020-10-16 01:45:51,465 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:45:51,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:45:51,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:45:51,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:45:51,467 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:45:51,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:45:51,467 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:45:51,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:45:51,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:45:51,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:45:51,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:45:51,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:45:51,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:45:51,468 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:45:51,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:45:51,469 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:45:51,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:45:51,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:45:51,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:45:51,470 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:45:51,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:45:51,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:45:51,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:45:51,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:45:51,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:45:51,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:45:51,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:45:51,471 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:45:51,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:45:51,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:45:51,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:45:51,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:45:51,828 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:45:51,829 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:45:51,829 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-10-16 01:45:51,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/433f079ea/6df7e17047344627b679d869520c823a/FLAGaf735580c [2020-10-16 01:45:52,436 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:45:52,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-10-16 01:45:52,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/433f079ea/6df7e17047344627b679d869520c823a/FLAGaf735580c [2020-10-16 01:45:52,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/433f079ea/6df7e17047344627b679d869520c823a [2020-10-16 01:45:52,785 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:45:52,787 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:45:52,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:45:52,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:45:52,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:45:52,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:45:52" (1/1) ... [2020-10-16 01:45:52,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e557b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:52, skipping insertion in model container [2020-10-16 01:45:52,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:45:52" (1/1) ... [2020-10-16 01:45:52,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:45:52,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:45:53,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:45:53,370 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:45:53,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:45:53,522 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:45:53,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:53 WrapperNode [2020-10-16 01:45:53,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:45:53,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:45:53,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:45:53,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:45:53,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:53" (1/1) ... [2020-10-16 01:45:53,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:53" (1/1) ... [2020-10-16 01:45:53,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:45:53,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:45:53,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:45:53,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:45:53,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:53" (1/1) ... [2020-10-16 01:45:53,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:53" (1/1) ... [2020-10-16 01:45:53,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:53" (1/1) ... [2020-10-16 01:45:53,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:53" (1/1) ... [2020-10-16 01:45:53,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:53" (1/1) ... [2020-10-16 01:45:53,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:53" (1/1) ... [2020-10-16 01:45:53,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:53" (1/1) ... [2020-10-16 01:45:53,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:45:53,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:45:53,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:45:53,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:45:53,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:53" (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 [2020-10-16 01:45:53,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:45:53,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:45:53,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:45:53,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:45:53,675 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:45:53,675 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:45:53,676 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:45:53,676 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:45:53,676 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:45:53,676 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:45:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:45:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:45:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:45:53,679 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:45:54,040 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:45:54,040 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:45:54,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:45:54 BoogieIcfgContainer [2020-10-16 01:45:54,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:45:54,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:45:54,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:45:54,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:45:54,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:45:52" (1/3) ... [2020-10-16 01:45:54,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5226b1f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:45:54, skipping insertion in model container [2020-10-16 01:45:54,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:53" (2/3) ... [2020-10-16 01:45:54,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5226b1f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:45:54, skipping insertion in model container [2020-10-16 01:45:54,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:45:54" (3/3) ... [2020-10-16 01:45:54,050 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.opt.i [2020-10-16 01:45:54,060 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:45:54,066 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:45:54,067 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:45:54,105 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,105 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,106 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,110 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,110 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,113 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,113 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,113 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,114 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,114 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,121 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,122 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,122 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,122 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,130 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,131 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,131 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,131 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,138 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,139 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,139 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,139 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:54,159 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:45:54,180 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:45:54,181 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:45:54,181 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:45:54,181 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:45:54,181 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:45:54,181 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:45:54,182 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:45:54,182 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:45:54,195 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:45:54,234 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 01:45:54,235 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:45:54,240 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 01:45:54,240 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:45:54,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-16 01:45:54,248 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:45:54,251 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:45:54,253 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:45:54,254 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions, 119 flow [2020-10-16 01:45:54,272 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-16 01:45:54,273 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:45:54,273 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:45:54,275 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:45:55,579 INFO L132 LiptonReduction]: Checked pairs total: 1789 [2020-10-16 01:45:55,579 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 01:45:55,582 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1336 [2020-10-16 01:45:55,590 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-10-16 01:45:55,590 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:45:55,590 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:55,592 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:55,592 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:55,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:55,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1571313111, now seen corresponding path program 1 times [2020-10-16 01:45:55,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:55,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646855296] [2020-10-16 01:45:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:55,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:55,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646855296] [2020-10-16 01:45:55,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:55,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:45:55,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176800943] [2020-10-16 01:45:55,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:45:55,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:55,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:45:55,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:45:55,845 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 111 [2020-10-16 01:45:55,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states. [2020-10-16 01:45:55,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:55,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 111 [2020-10-16 01:45:55,849 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:55,888 INFO L129 PetriNetUnfolder]: 14/47 cut-off events. [2020-10-16 01:45:55,889 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:45:55,889 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 47 events. 14/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 117 event pairs, 6 based on Foata normal form. 1/47 useless extension candidates. Maximal degree in co-relation 77. Up to 29 conditions per place. [2020-10-16 01:45:55,891 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 4 selfloop transitions, 4 changer transitions 0/20 dead transitions. [2020-10-16 01:45:55,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 20 transitions, 65 flow [2020-10-16 01:45:55,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:45:55,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:45:55,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2020-10-16 01:45:55,908 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8258258258258259 [2020-10-16 01:45:55,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2020-10-16 01:45:55,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2020-10-16 01:45:55,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:55,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2020-10-16 01:45:55,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:45:55,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:45:55,925 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:45:55,928 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 275 transitions. [2020-10-16 01:45:55,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 20 transitions, 65 flow [2020-10-16 01:45:55,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 62 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:45:55,934 INFO L241 Difference]: Finished difference. Result has 27 places, 20 transitions, 66 flow [2020-10-16 01:45:55,937 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2020-10-16 01:45:55,938 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 01:45:55,939 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 66 flow [2020-10-16 01:45:55,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:45:55,939 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:55,939 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:55,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:45:55,940 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:55,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:55,940 INFO L82 PathProgramCache]: Analyzing trace with hash 443612414, now seen corresponding path program 1 times [2020-10-16 01:45:55,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:55,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640771302] [2020-10-16 01:45:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:56,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:56,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640771302] [2020-10-16 01:45:56,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:56,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:45:56,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725726448] [2020-10-16 01:45:56,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:45:56,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:56,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:45:56,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:45:56,045 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 111 [2020-10-16 01:45:56,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 66 flow. Second operand 4 states. [2020-10-16 01:45:56,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:56,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 111 [2020-10-16 01:45:56,047 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:56,080 INFO L129 PetriNetUnfolder]: 8/35 cut-off events. [2020-10-16 01:45:56,080 INFO L130 PetriNetUnfolder]: For 7/16 co-relation queries the response was YES. [2020-10-16 01:45:56,081 INFO L80 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 35 events. 8/35 cut-off events. For 7/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 1 based on Foata normal form. 8/42 useless extension candidates. Maximal degree in co-relation 78. Up to 20 conditions per place. [2020-10-16 01:45:56,081 INFO L132 encePairwiseOnDemand]: 106/111 looper letters, 4 selfloop transitions, 7 changer transitions 0/23 dead transitions. [2020-10-16 01:45:56,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 100 flow [2020-10-16 01:45:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:45:56,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:45:56,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 364 transitions. [2020-10-16 01:45:56,086 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8198198198198198 [2020-10-16 01:45:56,086 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 364 transitions. [2020-10-16 01:45:56,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 364 transitions. [2020-10-16 01:45:56,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:56,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 364 transitions. [2020-10-16 01:45:56,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:45:56,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:45:56,091 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:45:56,091 INFO L185 Difference]: Start difference. First operand has 27 places, 20 transitions, 66 flow. Second operand 4 states and 364 transitions. [2020-10-16 01:45:56,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 100 flow [2020-10-16 01:45:56,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 23 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:45:56,093 INFO L241 Difference]: Finished difference. Result has 30 places, 23 transitions, 102 flow [2020-10-16 01:45:56,093 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2020-10-16 01:45:56,094 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 01:45:56,094 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 102 flow [2020-10-16 01:45:56,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:45:56,095 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:56,095 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:56,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:45:56,095 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:56,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:56,096 INFO L82 PathProgramCache]: Analyzing trace with hash -736841052, now seen corresponding path program 1 times [2020-10-16 01:45:56,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:56,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992651145] [2020-10-16 01:45:56,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:56,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992651145] [2020-10-16 01:45:56,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:56,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:45:56,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606931585] [2020-10-16 01:45:56,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:45:56,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:56,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:45:56,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:45:56,198 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 111 [2020-10-16 01:45:56,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 102 flow. Second operand 3 states. [2020-10-16 01:45:56,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:56,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 111 [2020-10-16 01:45:56,200 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:56,237 INFO L129 PetriNetUnfolder]: 30/98 cut-off events. [2020-10-16 01:45:56,237 INFO L130 PetriNetUnfolder]: For 40/48 co-relation queries the response was YES. [2020-10-16 01:45:56,239 INFO L80 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 98 events. 30/98 cut-off events. For 40/48 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 383 event pairs, 6 based on Foata normal form. 10/103 useless extension candidates. Maximal degree in co-relation 260. Up to 55 conditions per place. [2020-10-16 01:45:56,240 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 7 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2020-10-16 01:45:56,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 126 flow [2020-10-16 01:45:56,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:45:56,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:45:56,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2020-10-16 01:45:56,242 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8498498498498499 [2020-10-16 01:45:56,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2020-10-16 01:45:56,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2020-10-16 01:45:56,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:56,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2020-10-16 01:45:56,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:45:56,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:45:56,246 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:45:56,246 INFO L185 Difference]: Start difference. First operand has 30 places, 23 transitions, 102 flow. Second operand 3 states and 283 transitions. [2020-10-16 01:45:56,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 126 flow [2020-10-16 01:45:56,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 112 flow, removed 3 selfloop flow, removed 2 redundant places. [2020-10-16 01:45:56,249 INFO L241 Difference]: Finished difference. Result has 31 places, 24 transitions, 100 flow [2020-10-16 01:45:56,250 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2020-10-16 01:45:56,250 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 01:45:56,250 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 100 flow [2020-10-16 01:45:56,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:45:56,250 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:56,251 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:56,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:45:56,251 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:56,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:56,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1848141784, now seen corresponding path program 1 times [2020-10-16 01:45:56,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:56,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616592618] [2020-10-16 01:45:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:56,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:56,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616592618] [2020-10-16 01:45:56,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:56,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:45:56,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953145167] [2020-10-16 01:45:56,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:45:56,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:56,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:45:56,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:45:56,333 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2020-10-16 01:45:56,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 100 flow. Second operand 4 states. [2020-10-16 01:45:56,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:56,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2020-10-16 01:45:56,334 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:56,389 INFO L129 PetriNetUnfolder]: 44/146 cut-off events. [2020-10-16 01:45:56,389 INFO L130 PetriNetUnfolder]: For 77/99 co-relation queries the response was YES. [2020-10-16 01:45:56,391 INFO L80 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 146 events. 44/146 cut-off events. For 77/99 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 707 event pairs, 8 based on Foata normal form. 16/156 useless extension candidates. Maximal degree in co-relation 367. Up to 79 conditions per place. [2020-10-16 01:45:56,392 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 7 selfloop transitions, 4 changer transitions 2/30 dead transitions. [2020-10-16 01:45:56,392 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 144 flow [2020-10-16 01:45:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:45:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:45:56,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2020-10-16 01:45:56,394 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8072072072072072 [2020-10-16 01:45:56,394 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2020-10-16 01:45:56,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2020-10-16 01:45:56,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:56,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2020-10-16 01:45:56,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:45:56,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:45:56,398 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:45:56,398 INFO L185 Difference]: Start difference. First operand has 31 places, 24 transitions, 100 flow. Second operand 5 states and 448 transitions. [2020-10-16 01:45:56,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 144 flow [2020-10-16 01:45:56,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:45:56,400 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 125 flow [2020-10-16 01:45:56,401 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2020-10-16 01:45:56,401 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 01:45:56,401 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 125 flow [2020-10-16 01:45:56,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:45:56,401 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:56,402 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:56,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:45:56,402 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:56,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:56,402 INFO L82 PathProgramCache]: Analyzing trace with hash -976779688, now seen corresponding path program 2 times [2020-10-16 01:45:56,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:56,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582518641] [2020-10-16 01:45:56,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:56,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582518641] [2020-10-16 01:45:56,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:56,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:45:56,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179552786] [2020-10-16 01:45:56,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:45:56,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:56,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:45:56,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:45:56,434 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 111 [2020-10-16 01:45:56,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 125 flow. Second operand 3 states. [2020-10-16 01:45:56,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:56,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 111 [2020-10-16 01:45:56,435 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:56,464 INFO L129 PetriNetUnfolder]: 45/144 cut-off events. [2020-10-16 01:45:56,465 INFO L130 PetriNetUnfolder]: For 97/114 co-relation queries the response was YES. [2020-10-16 01:45:56,466 INFO L80 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 144 events. 45/144 cut-off events. For 97/114 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 710 event pairs, 7 based on Foata normal form. 14/149 useless extension candidates. Maximal degree in co-relation 374. Up to 92 conditions per place. [2020-10-16 01:45:56,467 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 3 selfloop transitions, 2 changer transitions 3/27 dead transitions. [2020-10-16 01:45:56,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 137 flow [2020-10-16 01:45:56,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:45:56,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:45:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2020-10-16 01:45:56,469 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8648648648648649 [2020-10-16 01:45:56,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2020-10-16 01:45:56,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2020-10-16 01:45:56,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:56,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2020-10-16 01:45:56,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:45:56,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:45:56,471 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:45:56,471 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 125 flow. Second operand 3 states and 288 transitions. [2020-10-16 01:45:56,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 137 flow [2020-10-16 01:45:56,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:45:56,474 INFO L241 Difference]: Finished difference. Result has 37 places, 24 transitions, 116 flow [2020-10-16 01:45:56,474 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2020-10-16 01:45:56,474 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 01:45:56,475 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 116 flow [2020-10-16 01:45:56,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:45:56,475 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:56,475 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:56,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:45:56,475 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:56,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:56,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1094025872, now seen corresponding path program 1 times [2020-10-16 01:45:56,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:56,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812610941] [2020-10-16 01:45:56,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:56,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812610941] [2020-10-16 01:45:56,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:56,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:45:56,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286097026] [2020-10-16 01:45:56,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:45:56,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:56,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:45:56,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:45:56,514 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2020-10-16 01:45:56,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 116 flow. Second operand 4 states. [2020-10-16 01:45:56,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:56,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2020-10-16 01:45:56,515 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:56,560 INFO L129 PetriNetUnfolder]: 34/131 cut-off events. [2020-10-16 01:45:56,560 INFO L130 PetriNetUnfolder]: For 107/136 co-relation queries the response was YES. [2020-10-16 01:45:56,561 INFO L80 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 131 events. 34/131 cut-off events. For 107/136 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 638 event pairs, 4 based on Foata normal form. 12/137 useless extension candidates. Maximal degree in co-relation 352. Up to 71 conditions per place. [2020-10-16 01:45:56,562 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 6 selfloop transitions, 2 changer transitions 4/29 dead transitions. [2020-10-16 01:45:56,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 29 transitions, 156 flow [2020-10-16 01:45:56,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:45:56,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:45:56,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 447 transitions. [2020-10-16 01:45:56,565 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8054054054054054 [2020-10-16 01:45:56,565 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 447 transitions. [2020-10-16 01:45:56,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 447 transitions. [2020-10-16 01:45:56,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:56,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 447 transitions. [2020-10-16 01:45:56,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:45:56,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:45:56,568 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:45:56,568 INFO L185 Difference]: Start difference. First operand has 37 places, 24 transitions, 116 flow. Second operand 5 states and 447 transitions. [2020-10-16 01:45:56,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 29 transitions, 156 flow [2020-10-16 01:45:56,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 29 transitions, 152 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 01:45:56,571 INFO L241 Difference]: Finished difference. Result has 42 places, 24 transitions, 122 flow [2020-10-16 01:45:56,571 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=42, PETRI_TRANSITIONS=24} [2020-10-16 01:45:56,572 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2020-10-16 01:45:56,572 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 24 transitions, 122 flow [2020-10-16 01:45:56,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:45:56,572 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:56,572 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:56,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:45:56,573 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:56,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:56,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1760912260, now seen corresponding path program 2 times [2020-10-16 01:45:56,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:56,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107681160] [2020-10-16 01:45:56,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:56,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107681160] [2020-10-16 01:45:56,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:56,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:45:56,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358047830] [2020-10-16 01:45:56,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:45:56,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:56,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:45:56,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:45:56,615 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 111 [2020-10-16 01:45:56,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 24 transitions, 122 flow. Second operand 5 states. [2020-10-16 01:45:56,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:56,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 111 [2020-10-16 01:45:56,616 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:56,648 INFO L129 PetriNetUnfolder]: 12/55 cut-off events. [2020-10-16 01:45:56,648 INFO L130 PetriNetUnfolder]: For 77/129 co-relation queries the response was YES. [2020-10-16 01:45:56,649 INFO L80 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 55 events. 12/55 cut-off events. For 77/129 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 167 event pairs, 0 based on Foata normal form. 35/86 useless extension candidates. Maximal degree in co-relation 175. Up to 28 conditions per place. [2020-10-16 01:45:56,649 INFO L132 encePairwiseOnDemand]: 106/111 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2020-10-16 01:45:56,649 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 23 transitions, 132 flow [2020-10-16 01:45:56,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:45:56,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:45:56,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 451 transitions. [2020-10-16 01:45:56,652 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8126126126126126 [2020-10-16 01:45:56,652 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 451 transitions. [2020-10-16 01:45:56,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 451 transitions. [2020-10-16 01:45:56,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:56,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 451 transitions. [2020-10-16 01:45:56,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:45:56,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:45:56,655 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:45:56,655 INFO L185 Difference]: Start difference. First operand has 42 places, 24 transitions, 122 flow. Second operand 5 states and 451 transitions. [2020-10-16 01:45:56,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 23 transitions, 132 flow [2020-10-16 01:45:56,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 23 transitions, 125 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 01:45:56,657 INFO L241 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2020-10-16 01:45:56,657 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2020-10-16 01:45:56,657 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2020-10-16 01:45:56,657 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2020-10-16 01:45:56,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:45:56,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:45:56,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:45:56 BasicIcfg [2020-10-16 01:45:56,662 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:45:56,665 INFO L168 Benchmark]: Toolchain (without parser) took 3877.63 ms. Allocated memory was 251.7 MB in the beginning and 369.6 MB in the end (delta: 118.0 MB). Free memory was 204.5 MB in the beginning and 267.3 MB in the end (delta: -62.8 MB). Peak memory consumption was 55.1 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:56,666 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 251.7 MB. Free memory was 227.2 MB in the beginning and 226.4 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-16 01:45:56,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.81 ms. Allocated memory was 251.7 MB in the beginning and 314.0 MB in the end (delta: 62.4 MB). Free memory was 203.6 MB in the beginning and 266.4 MB in the end (delta: -62.7 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:56,668 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.42 ms. Allocated memory is still 314.0 MB. Free memory was 266.4 MB in the beginning and 263.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:56,668 INFO L168 Benchmark]: Boogie Preprocessor took 26.06 ms. Allocated memory is still 314.0 MB. Free memory was 263.8 MB in the beginning and 262.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:56,669 INFO L168 Benchmark]: RCFGBuilder took 445.89 ms. Allocated memory is still 314.0 MB. Free memory was 262.1 MB in the beginning and 239.9 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:56,670 INFO L168 Benchmark]: TraceAbstraction took 2618.56 ms. Allocated memory was 314.0 MB in the beginning and 369.6 MB in the end (delta: 55.6 MB). Free memory was 239.0 MB in the beginning and 267.3 MB in the end (delta: -28.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:56,674 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 251.7 MB. Free memory was 227.2 MB in the beginning and 226.4 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 735.81 ms. Allocated memory was 251.7 MB in the beginning and 314.0 MB in the end (delta: 62.4 MB). Free memory was 203.6 MB in the beginning and 266.4 MB in the end (delta: -62.7 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.42 ms. Allocated memory is still 314.0 MB. Free memory was 266.4 MB in the beginning and 263.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.06 ms. Allocated memory is still 314.0 MB. Free memory was 263.8 MB in the beginning and 262.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 445.89 ms. Allocated memory is still 314.0 MB. Free memory was 262.1 MB in the beginning and 239.9 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2618.56 ms. Allocated memory was 314.0 MB in the beginning and 369.6 MB in the end (delta: 55.6 MB). Free memory was 239.0 MB in the beginning and 267.3 MB in the end (delta: -28.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 568 VarBasedMoverChecksPositive, 57 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 45 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 76 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 64 PlacesBefore, 27 PlacesAfterwards, 55 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 42 TotalNumberOfCompositions, 1789 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 32 SDtfs, 9 SDslu, 6 SDs, 0 SdLazy, 79 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 2236 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...