/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-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 04:26:53,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 04:26:53,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 04:26:53,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 04:26:53,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 04:26:53,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 04:26:53,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 04:26:53,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 04:26:53,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 04:26:53,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 04:26:53,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 04:26:53,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 04:26:53,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 04:26:53,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 04:26:53,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 04:26:53,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 04:26:53,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 04:26:53,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 04:26:53,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 04:26:53,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 04:26:53,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 04:26:53,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 04:26:53,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 04:26:53,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 04:26:53,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 04:26:53,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 04:26:53,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 04:26:53,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 04:26:53,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 04:26:53,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 04:26:53,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 04:26:53,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 04:26:53,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 04:26:53,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 04:26:53,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 04:26:53,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 04:26:53,600 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-SemanticLooper.epf [2020-10-16 04:26:53,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 04:26:53,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 04:26:53,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 04:26:53,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 04:26:53,647 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 04:26:53,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 04:26:53,648 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 04:26:53,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 04:26:53,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 04:26:53,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 04:26:53,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 04:26:53,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 04:26:53,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 04:26:53,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 04:26:53,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 04:26:53,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 04:26:53,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 04:26:53,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 04:26:53,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 04:26:53,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 04:26:53,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 04:26:53,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 04:26:53,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 04:26:53,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 04:26:53,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 04:26:53,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 04:26:53,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 04:26:53,653 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 04:26:53,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 04:26:53,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 04:26:53,971 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 04:26:53,974 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 04:26:53,975 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 04:26:53,976 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 04:26:53,976 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-10-16 04:26:54,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adc5d9f59/210e0d71fc6b451e9dae7867c31bd0e9/FLAGa5a77d859 [2020-10-16 04:26:54,612 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 04:26:54,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-10-16 04:26:54,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adc5d9f59/210e0d71fc6b451e9dae7867c31bd0e9/FLAGa5a77d859 [2020-10-16 04:26:54,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adc5d9f59/210e0d71fc6b451e9dae7867c31bd0e9 [2020-10-16 04:26:54,943 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 04:26:54,945 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 04:26:54,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 04:26:54,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 04:26:54,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 04:26:54,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 04:26:54" (1/1) ... [2020-10-16 04:26:54,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57525105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:26:54, skipping insertion in model container [2020-10-16 04:26:54,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 04:26:54" (1/1) ... [2020-10-16 04:26:54,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 04:26:55,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 04:26:55,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 04:26:55,482 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 04:26:55,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 04:26:55,635 INFO L208 MainTranslator]: Completed translation [2020-10-16 04:26:55,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:26:55 WrapperNode [2020-10-16 04:26:55,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 04:26:55,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 04:26:55,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 04:26:55,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 04:26:55,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:26:55" (1/1) ... [2020-10-16 04:26:55,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:26:55" (1/1) ... [2020-10-16 04:26:55,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 04:26:55,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 04:26:55,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 04:26:55,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 04:26:55,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:26:55" (1/1) ... [2020-10-16 04:26:55,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:26:55" (1/1) ... [2020-10-16 04:26:55,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:26:55" (1/1) ... [2020-10-16 04:26:55,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:26:55" (1/1) ... [2020-10-16 04:26:55,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:26:55" (1/1) ... [2020-10-16 04:26:55,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:26:55" (1/1) ... [2020-10-16 04:26:55,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:26:55" (1/1) ... [2020-10-16 04:26:55,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 04:26:55,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 04:26:55,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 04:26:55,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 04:26:55,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:26:55" (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 04:26:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 04:26:55,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 04:26:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 04:26:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 04:26:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 04:26:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 04:26:55,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 04:26:55,784 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 04:26:56,001 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 04:26:56,001 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-16 04:26:56,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 04:26:56 BoogieIcfgContainer [2020-10-16 04:26:56,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 04:26:56,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 04:26:56,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 04:26:56,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 04:26:56,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 04:26:54" (1/3) ... [2020-10-16 04:26:56,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfaf03b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 04:26:56, skipping insertion in model container [2020-10-16 04:26:56,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:26:55" (2/3) ... [2020-10-16 04:26:56,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfaf03b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 04:26:56, skipping insertion in model container [2020-10-16 04:26:56,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 04:26:56" (3/3) ... [2020-10-16 04:26:56,012 INFO L111 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2020-10-16 04:26:56,027 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 04:26:56,036 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 04:26:56,038 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 04:26:56,066 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:56,066 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:56,066 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:56,067 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:56,068 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:56,068 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:56,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:56,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:56,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:56,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:56,099 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 04:26:56,125 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 04:26:56,125 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 04:26:56,126 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 04:26:56,126 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 04:26:56,126 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 04:26:56,126 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 04:26:56,126 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 04:26:56,127 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 04:26:56,149 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 61 flow [2020-10-16 04:26:56,209 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2020-10-16 04:26:56,209 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 04:26:56,214 INFO L80 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 36 events. 3/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 18. Up to 4 conditions per place. [2020-10-16 04:26:56,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 28 transitions, 61 flow [2020-10-16 04:26:56,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 28 transitions, 61 flow [2020-10-16 04:26:56,224 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 04:26:56,227 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 28 transitions, 61 flow [2020-10-16 04:26:56,230 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 28 transitions, 61 flow [2020-10-16 04:26:56,230 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 61 flow [2020-10-16 04:26:56,243 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2020-10-16 04:26:56,244 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 04:26:56,245 INFO L80 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 36 events. 3/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 18. Up to 4 conditions per place. [2020-10-16 04:26:56,246 INFO L117 LiptonReduction]: Number of co-enabled transitions 180 [2020-10-16 04:26:56,810 INFO L132 LiptonReduction]: Checked pairs total: 146 [2020-10-16 04:26:56,811 INFO L134 LiptonReduction]: Total number of compositions: 24 [2020-10-16 04:26:56,815 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 593 [2020-10-16 04:26:56,825 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2020-10-16 04:26:56,826 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 04:26:56,826 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:26:56,827 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 04:26:56,828 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 04:26:56,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:26:56,835 INFO L82 PathProgramCache]: Analyzing trace with hash 4107967, now seen corresponding path program 1 times [2020-10-16 04:26:56,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:26:56,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252105614] [2020-10-16 04:26:56,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:26:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 04:26:57,015 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 04:26:57,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252105614] [2020-10-16 04:26:57,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 04:26:57,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 04:26:57,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512128399] [2020-10-16 04:26:57,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 04:26:57,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 04:26:57,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 04:26:57,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 04:26:57,042 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2020-10-16 04:26:57,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 21 flow. Second operand 3 states. [2020-10-16 04:26:57,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 04:26:57,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2020-10-16 04:26:57,046 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 04:26:57,065 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2020-10-16 04:26:57,065 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 04:26:57,065 INFO L80 FinitePrefix]: Finished finitePrefix Result has 15 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 3/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2020-10-16 04:26:57,066 INFO L132 encePairwiseOnDemand]: 48/52 looper letters, 0 selfloop transitions, 2 changer transitions 0/6 dead transitions. [2020-10-16 04:26:57,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 6 transitions, 21 flow [2020-10-16 04:26:57,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 04:26:57,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 04:26:57,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2020-10-16 04:26:57,082 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5705128205128205 [2020-10-16 04:26:57,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 89 transitions. [2020-10-16 04:26:57,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 89 transitions. [2020-10-16 04:26:57,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 04:26:57,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 89 transitions. [2020-10-16 04:26:57,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 04:26:57,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 04:26:57,096 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 04:26:57,099 INFO L185 Difference]: Start difference. First operand has 11 places, 8 transitions, 21 flow. Second operand 3 states and 89 transitions. [2020-10-16 04:26:57,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 6 transitions, 21 flow [2020-10-16 04:26:57,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 6 transitions, 21 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 04:26:57,104 INFO L241 Difference]: Finished difference. Result has 11 places, 6 transitions, 21 flow [2020-10-16 04:26:57,107 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=21, PETRI_PLACES=11, PETRI_TRANSITIONS=6} [2020-10-16 04:26:57,108 INFO L342 CegarLoopForPetriNet]: 11 programPoint places, 0 predicate places. [2020-10-16 04:26:57,108 INFO L481 AbstractCegarLoop]: Abstraction has has 11 places, 6 transitions, 21 flow [2020-10-16 04:26:57,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 04:26:57,109 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:26:57,109 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2020-10-16 04:26:57,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 04:26:57,110 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 04:26:57,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:26:57,110 INFO L82 PathProgramCache]: Analyzing trace with hash -347254361, now seen corresponding path program 1 times [2020-10-16 04:26:57,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:26:57,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916093853] [2020-10-16 04:26:57,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:26:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 04:26:57,137 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 04:26:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 04:26:57,148 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 04:26:57,168 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 04:26:57,168 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 04:26:57,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 04:26:57,171 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 04:26:57,172 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 04:26:57,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:57,209 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 04:26:57,210 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 04:26:57,210 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 04:26:57,210 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 04:26:57,210 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 04:26:57,210 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 04:26:57,211 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 04:26:57,211 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 04:26:57,211 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 04:26:57,214 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 88 flow [2020-10-16 04:26:57,240 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-16 04:26:57,244 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 04:26:57,247 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 5/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 37. Up to 6 conditions per place. [2020-10-16 04:26:57,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 38 transitions, 88 flow [2020-10-16 04:26:57,249 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 38 transitions, 88 flow [2020-10-16 04:26:57,250 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 04:26:57,250 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 38 transitions, 88 flow [2020-10-16 04:26:57,250 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 38 transitions, 88 flow [2020-10-16 04:26:57,251 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 88 flow [2020-10-16 04:26:57,271 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-16 04:26:57,271 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 04:26:57,272 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 5/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 110 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 37. Up to 6 conditions per place. [2020-10-16 04:26:57,276 INFO L117 LiptonReduction]: Number of co-enabled transitions 540 [2020-10-16 04:26:57,848 INFO L132 LiptonReduction]: Checked pairs total: 955 [2020-10-16 04:26:57,848 INFO L134 LiptonReduction]: Total number of compositions: 31 [2020-10-16 04:26:57,849 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 599 [2020-10-16 04:26:57,851 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2020-10-16 04:26:57,851 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 04:26:57,851 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:26:57,851 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 04:26:57,852 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 04:26:57,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:26:57,852 INFO L82 PathProgramCache]: Analyzing trace with hash 6531966, now seen corresponding path program 1 times [2020-10-16 04:26:57,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:26:57,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355250454] [2020-10-16 04:26:57,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:26:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 04:26:57,950 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 04:26:57,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355250454] [2020-10-16 04:26:57,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 04:26:57,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 04:26:57,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792720662] [2020-10-16 04:26:57,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 04:26:57,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 04:26:57,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 04:26:57,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 04:26:57,953 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 69 [2020-10-16 04:26:57,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 44 flow. Second operand 3 states. [2020-10-16 04:26:57,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 04:26:57,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 69 [2020-10-16 04:26:57,954 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 04:26:57,981 INFO L129 PetriNetUnfolder]: 4/26 cut-off events. [2020-10-16 04:26:57,981 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 04:26:57,982 INFO L80 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 26 events. 4/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 59 event pairs, 1 based on Foata normal form. 13/35 useless extension candidates. Maximal degree in co-relation 33. Up to 11 conditions per place. [2020-10-16 04:26:57,982 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 8 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2020-10-16 04:26:57,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 18 transitions, 70 flow [2020-10-16 04:26:57,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 04:26:57,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 04:26:57,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2020-10-16 04:26:57,985 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5748792270531401 [2020-10-16 04:26:57,985 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2020-10-16 04:26:57,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2020-10-16 04:26:57,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 04:26:57,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2020-10-16 04:26:57,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 04:26:57,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 04:26:57,989 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 04:26:57,989 INFO L185 Difference]: Start difference. First operand has 20 places, 16 transitions, 44 flow. Second operand 3 states and 119 transitions. [2020-10-16 04:26:57,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 18 transitions, 70 flow [2020-10-16 04:26:57,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 18 transitions, 68 flow, removed 1 selfloop flow, removed 0 redundant places. [2020-10-16 04:26:57,991 INFO L241 Difference]: Finished difference. Result has 22 places, 16 transitions, 59 flow [2020-10-16 04:26:57,992 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2020-10-16 04:26:57,992 INFO L342 CegarLoopForPetriNet]: 20 programPoint places, 2 predicate places. [2020-10-16 04:26:57,992 INFO L481 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 59 flow [2020-10-16 04:26:57,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 04:26:57,992 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:26:57,992 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2020-10-16 04:26:57,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 04:26:57,993 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 04:26:57,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:26:57,993 INFO L82 PathProgramCache]: Analyzing trace with hash 83161709, now seen corresponding path program 1 times [2020-10-16 04:26:57,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:26:57,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127238107] [2020-10-16 04:26:57,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:26:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 04:26:58,010 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 04:26:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 04:26:58,021 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 04:26:58,026 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 04:26:58,026 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 04:26:58,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 04:26:58,027 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 04:26:58,029 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 04:26:58,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,039 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,039 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,039 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,039 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,045 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,056 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,056 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:58,064 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 04:26:58,065 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 04:26:58,065 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 04:26:58,065 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 04:26:58,065 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 04:26:58,065 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 04:26:58,065 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 04:26:58,066 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 04:26:58,066 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 04:26:58,067 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 117 flow [2020-10-16 04:26:58,091 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-10-16 04:26:58,092 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 04:26:58,094 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 74 events. 7/74 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2020-10-16 04:26:58,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 48 transitions, 117 flow [2020-10-16 04:26:58,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 48 transitions, 117 flow [2020-10-16 04:26:58,097 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 04:26:58,097 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 48 transitions, 117 flow [2020-10-16 04:26:58,097 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 48 transitions, 117 flow [2020-10-16 04:26:58,097 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 117 flow [2020-10-16 04:26:58,111 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-10-16 04:26:58,111 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 04:26:58,112 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 74 events. 7/74 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 161 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2020-10-16 04:26:58,114 INFO L117 LiptonReduction]: Number of co-enabled transitions 1080 [2020-10-16 04:26:58,846 INFO L132 LiptonReduction]: Checked pairs total: 2791 [2020-10-16 04:26:58,846 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 04:26:58,847 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 750 [2020-10-16 04:26:58,848 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2020-10-16 04:26:58,849 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 04:26:58,849 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:26:58,849 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 04:26:58,849 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 04:26:58,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:26:58,850 INFO L82 PathProgramCache]: Analyzing trace with hash 9457192, now seen corresponding path program 1 times [2020-10-16 04:26:58,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:26:58,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205269579] [2020-10-16 04:26:58,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:26:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 04:26:58,879 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 04:26:58,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205269579] [2020-10-16 04:26:58,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 04:26:58,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 04:26:58,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239402724] [2020-10-16 04:26:58,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 04:26:58,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 04:26:58,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 04:26:58,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 04:26:58,882 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 90 [2020-10-16 04:26:58,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 67 flow. Second operand 3 states. [2020-10-16 04:26:58,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 04:26:58,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 90 [2020-10-16 04:26:58,883 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 04:26:58,928 INFO L129 PetriNetUnfolder]: 43/110 cut-off events. [2020-10-16 04:26:58,928 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 04:26:58,928 INFO L80 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 110 events. 43/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 456 event pairs, 15 based on Foata normal form. 49/129 useless extension candidates. Maximal degree in co-relation 187. Up to 76 conditions per place. [2020-10-16 04:26:58,930 INFO L132 encePairwiseOnDemand]: 79/90 looper letters, 12 selfloop transitions, 4 changer transitions 0/25 dead transitions. [2020-10-16 04:26:58,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 25 transitions, 103 flow [2020-10-16 04:26:58,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 04:26:58,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 04:26:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2020-10-16 04:26:58,932 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2020-10-16 04:26:58,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 150 transitions. [2020-10-16 04:26:58,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 150 transitions. [2020-10-16 04:26:58,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 04:26:58,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 150 transitions. [2020-10-16 04:26:58,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 04:26:58,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 04:26:58,935 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 04:26:58,936 INFO L185 Difference]: Start difference. First operand has 27 places, 23 transitions, 67 flow. Second operand 3 states and 150 transitions. [2020-10-16 04:26:58,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 25 transitions, 103 flow [2020-10-16 04:26:58,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 97 flow, removed 3 selfloop flow, removed 0 redundant places. [2020-10-16 04:26:58,937 INFO L241 Difference]: Finished difference. Result has 29 places, 22 transitions, 83 flow [2020-10-16 04:26:58,938 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2020-10-16 04:26:58,938 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2020-10-16 04:26:58,938 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 83 flow [2020-10-16 04:26:58,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 04:26:58,938 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:26:58,938 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 04:26:58,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 04:26:58,939 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 04:26:58,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:26:58,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1946857634, now seen corresponding path program 1 times [2020-10-16 04:26:58,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:26:58,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768522317] [2020-10-16 04:26:58,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:26:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 04:26:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 04:26:58,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768522317] [2020-10-16 04:26:58,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 04:26:58,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 04:26:58,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64111817] [2020-10-16 04:26:58,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 04:26:58,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 04:26:58,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 04:26:58,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 04:26:58,976 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 90 [2020-10-16 04:26:58,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 83 flow. Second operand 3 states. [2020-10-16 04:26:58,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 04:26:58,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 90 [2020-10-16 04:26:58,977 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 04:26:59,023 INFO L129 PetriNetUnfolder]: 38/104 cut-off events. [2020-10-16 04:26:59,023 INFO L130 PetriNetUnfolder]: For 23/28 co-relation queries the response was YES. [2020-10-16 04:26:59,024 INFO L80 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 104 events. 38/104 cut-off events. For 23/28 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 376 event pairs, 7 based on Foata normal form. 22/120 useless extension candidates. Maximal degree in co-relation 213. Up to 42 conditions per place. [2020-10-16 04:26:59,025 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 10 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2020-10-16 04:26:59,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 25 transitions, 109 flow [2020-10-16 04:26:59,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 04:26:59,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 04:26:59,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2020-10-16 04:26:59,028 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5703703703703704 [2020-10-16 04:26:59,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 154 transitions. [2020-10-16 04:26:59,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 154 transitions. [2020-10-16 04:26:59,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 04:26:59,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 154 transitions. [2020-10-16 04:26:59,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 04:26:59,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 04:26:59,031 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 04:26:59,031 INFO L185 Difference]: Start difference. First operand has 29 places, 22 transitions, 83 flow. Second operand 3 states and 154 transitions. [2020-10-16 04:26:59,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 25 transitions, 109 flow [2020-10-16 04:26:59,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 105 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 04:26:59,033 INFO L241 Difference]: Finished difference. Result has 28 places, 22 transitions, 88 flow [2020-10-16 04:26:59,033 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2020-10-16 04:26:59,034 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2020-10-16 04:26:59,034 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 88 flow [2020-10-16 04:26:59,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 04:26:59,034 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:26:59,034 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-10-16 04:26:59,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 04:26:59,035 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 04:26:59,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:26:59,035 INFO L82 PathProgramCache]: Analyzing trace with hash -274399323, now seen corresponding path program 1 times [2020-10-16 04:26:59,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:26:59,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760023436] [2020-10-16 04:26:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:26:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 04:26:59,050 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 04:26:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 04:26:59,063 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 04:26:59,069 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 04:26:59,069 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 04:26:59,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 04:26:59,070 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 04:26:59,070 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 04:26:59,077 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,077 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,080 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,080 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,083 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,084 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:26:59,090 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 04:26:59,090 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 04:26:59,090 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 04:26:59,090 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 04:26:59,090 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 04:26:59,090 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 04:26:59,091 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 04:26:59,091 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 04:26:59,091 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 04:26:59,093 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 148 flow [2020-10-16 04:26:59,102 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2020-10-16 04:26:59,103 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 04:26:59,103 INFO L80 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 93 events. 9/93 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 209 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 83. Up to 10 conditions per place. [2020-10-16 04:26:59,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 58 transitions, 148 flow [2020-10-16 04:26:59,105 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 58 transitions, 148 flow [2020-10-16 04:26:59,105 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 04:26:59,105 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 58 transitions, 148 flow [2020-10-16 04:26:59,105 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 58 transitions, 148 flow [2020-10-16 04:26:59,105 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 148 flow [2020-10-16 04:26:59,114 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2020-10-16 04:26:59,114 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 04:26:59,115 INFO L80 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 93 events. 9/93 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 208 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 83. Up to 10 conditions per place. [2020-10-16 04:26:59,118 INFO L117 LiptonReduction]: Number of co-enabled transitions 1800 [2020-10-16 04:27:00,141 INFO L132 LiptonReduction]: Checked pairs total: 4061 [2020-10-16 04:27:00,141 INFO L134 LiptonReduction]: Total number of compositions: 49 [2020-10-16 04:27:00,141 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1036 [2020-10-16 04:27:00,143 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2020-10-16 04:27:00,143 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 04:27:00,143 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:27:00,143 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 04:27:00,144 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 04:27:00,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:27:00,144 INFO L82 PathProgramCache]: Analyzing trace with hash 13119213, now seen corresponding path program 1 times [2020-10-16 04:27:00,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:27:00,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517347249] [2020-10-16 04:27:00,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:27:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 04:27:00,172 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 04:27:00,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517347249] [2020-10-16 04:27:00,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 04:27:00,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 04:27:00,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888314974] [2020-10-16 04:27:00,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 04:27:00,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 04:27:00,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 04:27:00,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 04:27:00,175 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 107 [2020-10-16 04:27:00,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 88 flow. Second operand 3 states. [2020-10-16 04:27:00,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 04:27:00,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 107 [2020-10-16 04:27:00,176 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 04:27:00,284 INFO L129 PetriNetUnfolder]: 318/576 cut-off events. [2020-10-16 04:27:00,284 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 04:27:00,287 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1109 conditions, 576 events. 318/576 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3206 event pairs, 157 based on Foata normal form. 197/586 useless extension candidates. Maximal degree in co-relation 1071. Up to 477 conditions per place. [2020-10-16 04:27:00,292 INFO L132 encePairwiseOnDemand]: 94/107 looper letters, 16 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2020-10-16 04:27:00,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 138 flow [2020-10-16 04:27:00,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 04:27:00,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 04:27:00,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2020-10-16 04:27:00,295 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5420560747663551 [2020-10-16 04:27:00,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2020-10-16 04:27:00,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2020-10-16 04:27:00,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 04:27:00,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2020-10-16 04:27:00,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 04:27:00,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 04:27:00,298 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 04:27:00,299 INFO L185 Difference]: Start difference. First operand has 34 places, 28 transitions, 88 flow. Second operand 3 states and 174 transitions. [2020-10-16 04:27:00,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 138 flow [2020-10-16 04:27:00,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 126 flow, removed 6 selfloop flow, removed 0 redundant places. [2020-10-16 04:27:00,301 INFO L241 Difference]: Finished difference. Result has 36 places, 28 transitions, 107 flow [2020-10-16 04:27:00,302 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2020-10-16 04:27:00,302 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2020-10-16 04:27:00,302 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 107 flow [2020-10-16 04:27:00,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 04:27:00,302 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:27:00,303 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 04:27:00,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 04:27:00,303 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 04:27:00,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:27:00,303 INFO L82 PathProgramCache]: Analyzing trace with hash 637927375, now seen corresponding path program 1 times [2020-10-16 04:27:00,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:27:00,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738577921] [2020-10-16 04:27:00,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:27:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 04:27:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 04:27:00,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738577921] [2020-10-16 04:27:00,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 04:27:00,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 04:27:00,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088995687] [2020-10-16 04:27:00,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 04:27:00,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 04:27:00,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 04:27:00,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 04:27:00,352 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 107 [2020-10-16 04:27:00,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 107 flow. Second operand 3 states. [2020-10-16 04:27:00,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 04:27:00,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 107 [2020-10-16 04:27:00,353 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 04:27:00,460 INFO L129 PetriNetUnfolder]: 204/419 cut-off events. [2020-10-16 04:27:00,460 INFO L130 PetriNetUnfolder]: For 151/215 co-relation queries the response was YES. [2020-10-16 04:27:00,464 INFO L80 FinitePrefix]: Finished finitePrefix Result has 910 conditions, 419 events. 204/419 cut-off events. For 151/215 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2128 event pairs, 40 based on Foata normal form. 137/529 useless extension candidates. Maximal degree in co-relation 889. Up to 189 conditions per place. [2020-10-16 04:27:00,469 INFO L132 encePairwiseOnDemand]: 99/107 looper letters, 13 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2020-10-16 04:27:00,470 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 141 flow [2020-10-16 04:27:00,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 04:27:00,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 04:27:00,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2020-10-16 04:27:00,473 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5514018691588785 [2020-10-16 04:27:00,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 177 transitions. [2020-10-16 04:27:00,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 177 transitions. [2020-10-16 04:27:00,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 04:27:00,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 177 transitions. [2020-10-16 04:27:00,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 04:27:00,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 04:27:00,478 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 04:27:00,478 INFO L185 Difference]: Start difference. First operand has 36 places, 28 transitions, 107 flow. Second operand 3 states and 177 transitions. [2020-10-16 04:27:00,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 141 flow [2020-10-16 04:27:00,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 04:27:00,484 INFO L241 Difference]: Finished difference. Result has 34 places, 28 transitions, 114 flow [2020-10-16 04:27:00,484 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2020-10-16 04:27:00,484 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2020-10-16 04:27:00,484 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 114 flow [2020-10-16 04:27:00,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 04:27:00,485 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:27:00,485 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-10-16 04:27:00,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 04:27:00,486 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 04:27:00,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:27:00,487 INFO L82 PathProgramCache]: Analyzing trace with hash -888053295, now seen corresponding path program 1 times [2020-10-16 04:27:00,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:27:00,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175742508] [2020-10-16 04:27:00,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:27:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 04:27:00,522 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 04:27:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 04:27:00,529 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 04:27:00,535 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 04:27:00,535 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 04:27:00,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 04:27:00,536 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 04:27:00,536 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 04:27:00,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,545 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,545 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,545 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,549 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,549 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,549 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,549 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,549 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,551 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,551 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,552 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,553 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,553 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,553 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,554 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,554 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,554 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,554 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,555 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,556 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,556 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,556 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:00,557 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 04:27:00,557 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 04:27:00,558 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 04:27:00,558 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 04:27:00,558 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 04:27:00,558 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 04:27:00,558 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 04:27:00,558 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 04:27:00,558 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 04:27:00,560 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 181 flow [2020-10-16 04:27:00,572 INFO L129 PetriNetUnfolder]: 11/112 cut-off events. [2020-10-16 04:27:00,572 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 04:27:00,573 INFO L80 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 112 events. 11/112 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 265 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 109. Up to 12 conditions per place. [2020-10-16 04:27:00,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 68 transitions, 181 flow [2020-10-16 04:27:00,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 68 transitions, 181 flow [2020-10-16 04:27:00,575 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 04:27:00,575 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 68 transitions, 181 flow [2020-10-16 04:27:00,575 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 68 transitions, 181 flow [2020-10-16 04:27:00,575 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 181 flow [2020-10-16 04:27:00,586 INFO L129 PetriNetUnfolder]: 11/112 cut-off events. [2020-10-16 04:27:00,586 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 04:27:00,588 INFO L80 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 112 events. 11/112 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 285 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 109. Up to 12 conditions per place. [2020-10-16 04:27:00,592 INFO L117 LiptonReduction]: Number of co-enabled transitions 2700 [2020-10-16 04:27:02,002 INFO L132 LiptonReduction]: Checked pairs total: 7443 [2020-10-16 04:27:02,003 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-16 04:27:02,003 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1428 [2020-10-16 04:27:02,005 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2020-10-16 04:27:02,005 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 04:27:02,005 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:27:02,005 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 04:27:02,005 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 04:27:02,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:27:02,006 INFO L82 PathProgramCache]: Analyzing trace with hash 17094107, now seen corresponding path program 1 times [2020-10-16 04:27:02,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:27:02,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332492575] [2020-10-16 04:27:02,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:27:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 04:27:02,069 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 04:27:02,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332492575] [2020-10-16 04:27:02,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 04:27:02,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 04:27:02,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242927117] [2020-10-16 04:27:02,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 04:27:02,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 04:27:02,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 04:27:02,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 04:27:02,072 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2020-10-16 04:27:02,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 115 flow. Second operand 3 states. [2020-10-16 04:27:02,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 04:27:02,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2020-10-16 04:27:02,073 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 04:27:02,493 INFO L129 PetriNetUnfolder]: 1973/3075 cut-off events. [2020-10-16 04:27:02,493 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 04:27:02,506 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5893 conditions, 3075 events. 1973/3075 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 19659 event pairs, 1183 based on Foata normal form. 821/2904 useless extension candidates. Maximal degree in co-relation 5844. Up to 2706 conditions per place. [2020-10-16 04:27:02,540 INFO L132 encePairwiseOnDemand]: 111/128 looper letters, 20 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2020-10-16 04:27:02,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 175 flow [2020-10-16 04:27:02,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 04:27:02,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 04:27:02,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2020-10-16 04:27:02,544 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2020-10-16 04:27:02,544 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2020-10-16 04:27:02,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2020-10-16 04:27:02,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 04:27:02,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2020-10-16 04:27:02,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 04:27:02,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 04:27:02,548 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 04:27:02,548 INFO L185 Difference]: Start difference. First operand has 41 places, 35 transitions, 115 flow. Second operand 3 states and 202 transitions. [2020-10-16 04:27:02,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 175 flow [2020-10-16 04:27:02,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 155 flow, removed 10 selfloop flow, removed 0 redundant places. [2020-10-16 04:27:02,553 INFO L241 Difference]: Finished difference. Result has 43 places, 34 transitions, 131 flow [2020-10-16 04:27:02,554 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2020-10-16 04:27:02,554 INFO L342 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2020-10-16 04:27:02,554 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 131 flow [2020-10-16 04:27:02,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 04:27:02,555 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:27:02,555 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 04:27:02,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 04:27:02,556 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 04:27:02,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:27:02,556 INFO L82 PathProgramCache]: Analyzing trace with hash 2126634833, now seen corresponding path program 1 times [2020-10-16 04:27:02,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:27:02,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330896439] [2020-10-16 04:27:02,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:27:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 04:27:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 04:27:02,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330896439] [2020-10-16 04:27:02,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 04:27:02,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 04:27:02,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941152121] [2020-10-16 04:27:02,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 04:27:02,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 04:27:02,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 04:27:02,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 04:27:02,600 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 128 [2020-10-16 04:27:02,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 131 flow. Second operand 3 states. [2020-10-16 04:27:02,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 04:27:02,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 128 [2020-10-16 04:27:02,600 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 04:27:02,827 INFO L129 PetriNetUnfolder]: 960/1716 cut-off events. [2020-10-16 04:27:02,827 INFO L130 PetriNetUnfolder]: For 879/1417 co-relation queries the response was YES. [2020-10-16 04:27:02,839 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3651 conditions, 1716 events. 960/1716 cut-off events. For 879/1417 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10639 event pairs, 219 based on Foata normal form. 742/2336 useless extension candidates. Maximal degree in co-relation 3629. Up to 889 conditions per place. [2020-10-16 04:27:02,853 INFO L132 encePairwiseOnDemand]: 118/128 looper letters, 16 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2020-10-16 04:27:02,853 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 39 transitions, 173 flow [2020-10-16 04:27:02,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 04:27:02,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 04:27:02,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2020-10-16 04:27:02,855 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5442708333333334 [2020-10-16 04:27:02,855 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 209 transitions. [2020-10-16 04:27:02,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 209 transitions. [2020-10-16 04:27:02,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 04:27:02,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 209 transitions. [2020-10-16 04:27:02,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 04:27:02,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 04:27:02,858 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 04:27:02,858 INFO L185 Difference]: Start difference. First operand has 43 places, 34 transitions, 131 flow. Second operand 3 states and 209 transitions. [2020-10-16 04:27:02,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 39 transitions, 173 flow [2020-10-16 04:27:02,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 04:27:02,860 INFO L241 Difference]: Finished difference. Result has 40 places, 34 transitions, 140 flow [2020-10-16 04:27:02,861 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2020-10-16 04:27:02,861 INFO L342 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2020-10-16 04:27:02,861 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 140 flow [2020-10-16 04:27:02,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 04:27:02,861 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:27:02,861 INFO L255 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 04:27:02,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 04:27:02,862 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 04:27:02,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:27:02,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1270266075, now seen corresponding path program 1 times [2020-10-16 04:27:02,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:27:02,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574116812] [2020-10-16 04:27:02,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:27:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 04:27:02,882 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 04:27:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 04:27:02,896 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 04:27:02,907 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 04:27:02,908 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 04:27:02,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 04:27:02,909 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 04:27:02,909 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-16 04:27:02,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,922 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,922 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,922 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,922 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,922 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,922 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,923 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,923 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,923 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,924 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,924 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,925 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,925 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,925 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,925 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,926 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,926 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,926 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,926 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,926 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,927 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,927 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,928 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,928 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,928 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,928 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,928 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,929 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,929 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,929 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,929 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,929 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,931 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,931 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,931 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,931 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,932 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,933 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,933 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,933 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,934 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,934 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,936 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,936 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,938 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:02,939 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 04:27:02,939 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 04:27:02,939 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 04:27:02,939 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 04:27:02,939 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 04:27:02,940 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 04:27:02,940 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 04:27:02,940 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 04:27:02,941 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 04:27:02,942 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 216 flow [2020-10-16 04:27:02,957 INFO L129 PetriNetUnfolder]: 13/131 cut-off events. [2020-10-16 04:27:02,957 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-16 04:27:02,959 INFO L80 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 131 events. 13/131 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 328 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 136. Up to 14 conditions per place. [2020-10-16 04:27:02,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 78 transitions, 216 flow [2020-10-16 04:27:02,960 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 78 transitions, 216 flow [2020-10-16 04:27:02,960 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 04:27:02,960 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 78 transitions, 216 flow [2020-10-16 04:27:02,961 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 78 transitions, 216 flow [2020-10-16 04:27:02,961 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 216 flow [2020-10-16 04:27:02,971 INFO L129 PetriNetUnfolder]: 13/131 cut-off events. [2020-10-16 04:27:02,971 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-16 04:27:02,972 INFO L80 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 131 events. 13/131 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 336 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 136. Up to 14 conditions per place. [2020-10-16 04:27:02,977 INFO L117 LiptonReduction]: Number of co-enabled transitions 3780 [2020-10-16 04:27:04,575 INFO L132 LiptonReduction]: Checked pairs total: 8748 [2020-10-16 04:27:04,576 INFO L134 LiptonReduction]: Total number of compositions: 66 [2020-10-16 04:27:04,576 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1616 [2020-10-16 04:27:04,577 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2020-10-16 04:27:04,577 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 04:27:04,578 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:27:04,578 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 04:27:04,578 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 04:27:04,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:27:04,578 INFO L82 PathProgramCache]: Analyzing trace with hash 22149830, now seen corresponding path program 1 times [2020-10-16 04:27:04,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:27:04,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623944924] [2020-10-16 04:27:04,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:27:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 04:27:04,594 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 04:27:04,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623944924] [2020-10-16 04:27:04,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 04:27:04,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 04:27:04,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114322533] [2020-10-16 04:27:04,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 04:27:04,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 04:27:04,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 04:27:04,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 04:27:04,596 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 144 [2020-10-16 04:27:04,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 138 flow. Second operand 3 states. [2020-10-16 04:27:04,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 04:27:04,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 144 [2020-10-16 04:27:04,597 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 04:27:06,465 INFO L129 PetriNetUnfolder]: 11012/15700 cut-off events. [2020-10-16 04:27:06,465 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-16 04:27:06,572 INFO L80 FinitePrefix]: Finished finitePrefix Result has 30184 conditions, 15700 events. 11012/15700 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 1524. Compared 108263 event pairs, 7369 based on Foata normal form. 3441/14151 useless extension candidates. Maximal degree in co-relation 30123. Up to 14251 conditions per place. [2020-10-16 04:27:06,712 INFO L132 encePairwiseOnDemand]: 126/144 looper letters, 24 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2020-10-16 04:27:06,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 214 flow [2020-10-16 04:27:06,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 04:27:06,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 04:27:06,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2020-10-16 04:27:06,714 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5254629629629629 [2020-10-16 04:27:06,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2020-10-16 04:27:06,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2020-10-16 04:27:06,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 04:27:06,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2020-10-16 04:27:06,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 04:27:06,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 04:27:06,717 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 04:27:06,717 INFO L185 Difference]: Start difference. First operand has 48 places, 39 transitions, 138 flow. Second operand 3 states and 227 transitions. [2020-10-16 04:27:06,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 214 flow [2020-10-16 04:27:06,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 184 flow, removed 15 selfloop flow, removed 0 redundant places. [2020-10-16 04:27:06,720 INFO L241 Difference]: Finished difference. Result has 50 places, 40 transitions, 155 flow [2020-10-16 04:27:06,721 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2020-10-16 04:27:06,721 INFO L342 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2020-10-16 04:27:06,721 INFO L481 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 155 flow [2020-10-16 04:27:06,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 04:27:06,721 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:27:06,721 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 04:27:06,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 04:27:06,722 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 04:27:06,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:27:06,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1088106256, now seen corresponding path program 1 times [2020-10-16 04:27:06,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:27:06,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270890457] [2020-10-16 04:27:06,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:27:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 04:27:06,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 04:27:06,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270890457] [2020-10-16 04:27:06,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 04:27:06,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 04:27:06,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675578705] [2020-10-16 04:27:06,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 04:27:06,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 04:27:06,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 04:27:06,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 04:27:06,747 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 144 [2020-10-16 04:27:06,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 155 flow. Second operand 3 states. [2020-10-16 04:27:06,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 04:27:06,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 144 [2020-10-16 04:27:06,748 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 04:27:07,431 INFO L129 PetriNetUnfolder]: 4252/7017 cut-off events. [2020-10-16 04:27:07,431 INFO L130 PetriNetUnfolder]: For 4691/8520 co-relation queries the response was YES. [2020-10-16 04:27:07,476 INFO L80 FinitePrefix]: Finished finitePrefix Result has 14708 conditions, 7017 events. 4252/7017 cut-off events. For 4691/8520 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 50626 event pairs, 1162 based on Foata normal form. 3676/10138 useless extension candidates. Maximal degree in co-relation 14685. Up to 4081 conditions per place. [2020-10-16 04:27:07,523 INFO L132 encePairwiseOnDemand]: 132/144 looper letters, 19 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2020-10-16 04:27:07,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 205 flow [2020-10-16 04:27:07,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 04:27:07,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 04:27:07,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2020-10-16 04:27:07,525 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5578703703703703 [2020-10-16 04:27:07,526 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2020-10-16 04:27:07,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2020-10-16 04:27:07,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 04:27:07,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2020-10-16 04:27:07,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 04:27:07,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 04:27:07,528 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 04:27:07,528 INFO L185 Difference]: Start difference. First operand has 50 places, 40 transitions, 155 flow. Second operand 3 states and 241 transitions. [2020-10-16 04:27:07,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 205 flow [2020-10-16 04:27:07,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 04:27:07,536 INFO L241 Difference]: Finished difference. Result has 46 places, 40 transitions, 166 flow [2020-10-16 04:27:07,537 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2020-10-16 04:27:07,537 INFO L342 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2020-10-16 04:27:07,537 INFO L481 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 166 flow [2020-10-16 04:27:07,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 04:27:07,537 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:27:07,537 INFO L255 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 04:27:07,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 04:27:07,538 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 04:27:07,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:27:07,538 INFO L82 PathProgramCache]: Analyzing trace with hash -2077234539, now seen corresponding path program 1 times [2020-10-16 04:27:07,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:27:07,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113711983] [2020-10-16 04:27:07,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:27:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 04:27:07,547 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 04:27:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 04:27:07,554 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 04:27:07,559 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 04:27:07,559 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 04:27:07,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 04:27:07,560 WARN L371 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 04:27:07,560 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-16 04:27:07,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,568 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,568 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,569 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,569 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,569 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,570 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,570 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,570 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,570 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,570 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,570 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,570 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,571 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,571 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,571 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,571 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,571 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,571 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,572 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,572 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,572 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,572 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,572 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,572 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,573 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,573 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,573 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,573 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,573 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,573 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,574 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,574 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,574 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,574 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,574 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,574 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,575 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,575 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,575 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,575 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,580 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,584 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,585 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,585 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,585 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,586 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,586 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,587 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,587 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,588 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,588 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,588 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,588 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,589 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,590 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,590 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,590 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:07,591 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-16 04:27:07,591 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 04:27:07,591 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 04:27:07,592 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 04:27:07,592 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 04:27:07,592 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 04:27:07,592 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 04:27:07,592 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 04:27:07,592 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 04:27:07,593 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 95 places, 88 transitions, 253 flow [2020-10-16 04:27:07,604 INFO L129 PetriNetUnfolder]: 15/150 cut-off events. [2020-10-16 04:27:07,604 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-16 04:27:07,606 INFO L80 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 150 events. 15/150 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 367 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 164. Up to 16 conditions per place. [2020-10-16 04:27:07,606 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 88 transitions, 253 flow [2020-10-16 04:27:07,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 88 transitions, 253 flow [2020-10-16 04:27:07,607 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 04:27:07,607 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 88 transitions, 253 flow [2020-10-16 04:27:07,607 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 88 transitions, 253 flow [2020-10-16 04:27:07,607 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 95 places, 88 transitions, 253 flow [2020-10-16 04:27:07,618 INFO L129 PetriNetUnfolder]: 15/150 cut-off events. [2020-10-16 04:27:07,618 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-16 04:27:07,619 INFO L80 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 150 events. 15/150 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 399 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 164. Up to 16 conditions per place. [2020-10-16 04:27:07,625 INFO L117 LiptonReduction]: Number of co-enabled transitions 5040 [2020-10-16 04:27:08,557 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-10-16 04:27:09,426 INFO L132 LiptonReduction]: Checked pairs total: 10655 [2020-10-16 04:27:09,426 INFO L134 LiptonReduction]: Total number of compositions: 73 [2020-10-16 04:27:09,426 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1819 [2020-10-16 04:27:09,427 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2020-10-16 04:27:09,427 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 04:27:09,427 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:27:09,428 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 04:27:09,428 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 04:27:09,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:27:09,428 INFO L82 PathProgramCache]: Analyzing trace with hash 27336756, now seen corresponding path program 1 times [2020-10-16 04:27:09,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:27:09,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830144648] [2020-10-16 04:27:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:27:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 04:27:09,446 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 04:27:09,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830144648] [2020-10-16 04:27:09,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 04:27:09,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 04:27:09,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721785867] [2020-10-16 04:27:09,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 04:27:09,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 04:27:09,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 04:27:09,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 04:27:09,448 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 161 [2020-10-16 04:27:09,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 163 flow. Second operand 3 states. [2020-10-16 04:27:09,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 04:27:09,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 161 [2020-10-16 04:27:09,449 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 04:27:18,209 INFO L129 PetriNetUnfolder]: 57279/76967 cut-off events. [2020-10-16 04:27:18,209 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-16 04:27:18,673 INFO L80 FinitePrefix]: Finished finitePrefix Result has 148622 conditions, 76967 events. 57279/76967 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6100. Compared 551339 event pairs, 41027 based on Foata normal form. 14338/67002 useless extension candidates. Maximal degree in co-relation 148548. Up to 71156 conditions per place. [2020-10-16 04:27:19,147 INFO L132 encePairwiseOnDemand]: 142/161 looper letters, 28 selfloop transitions, 8 changer transitions 0/53 dead transitions. [2020-10-16 04:27:19,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 255 flow [2020-10-16 04:27:19,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 04:27:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 04:27:19,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2020-10-16 04:27:19,149 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2020-10-16 04:27:19,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 252 transitions. [2020-10-16 04:27:19,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 252 transitions. [2020-10-16 04:27:19,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 04:27:19,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 252 transitions. [2020-10-16 04:27:19,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 04:27:19,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 04:27:19,152 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 04:27:19,152 INFO L185 Difference]: Start difference. First operand has 55 places, 43 transitions, 163 flow. Second operand 3 states and 252 transitions. [2020-10-16 04:27:19,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 255 flow [2020-10-16 04:27:19,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 53 transitions, 213 flow, removed 21 selfloop flow, removed 0 redundant places. [2020-10-16 04:27:19,158 INFO L241 Difference]: Finished difference. Result has 57 places, 46 transitions, 179 flow [2020-10-16 04:27:19,159 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2020-10-16 04:27:19,159 INFO L342 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2020-10-16 04:27:19,159 INFO L481 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 179 flow [2020-10-16 04:27:19,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 04:27:19,159 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:27:19,159 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 04:27:19,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 04:27:19,160 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 04:27:19,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:27:19,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1512538858, now seen corresponding path program 1 times [2020-10-16 04:27:19,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:27:19,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508963706] [2020-10-16 04:27:19,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:27:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 04:27:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 04:27:19,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508963706] [2020-10-16 04:27:19,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 04:27:19,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 04:27:19,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505108464] [2020-10-16 04:27:19,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 04:27:19,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 04:27:19,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 04:27:19,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 04:27:19,191 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 161 [2020-10-16 04:27:19,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 179 flow. Second operand 3 states. [2020-10-16 04:27:19,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 04:27:19,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 161 [2020-10-16 04:27:19,191 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 04:27:22,102 INFO L129 PetriNetUnfolder]: 18292/28630 cut-off events. [2020-10-16 04:27:22,102 INFO L130 PetriNetUnfolder]: For 23575/48834 co-relation queries the response was YES. [2020-10-16 04:27:22,251 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59329 conditions, 28630 events. 18292/28630 cut-off events. For 23575/48834 co-relation queries the response was YES. Maximal size of possible extension queue 2118. Compared 233872 event pairs, 5957 based on Foata normal form. 17156/43274 useless extension candidates. Maximal degree in co-relation 59305. Up to 18401 conditions per place. [2020-10-16 04:27:22,425 INFO L132 encePairwiseOnDemand]: 147/161 looper letters, 22 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2020-10-16 04:27:22,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 53 transitions, 237 flow [2020-10-16 04:27:22,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 04:27:22,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 04:27:22,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2020-10-16 04:27:22,427 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5527950310559007 [2020-10-16 04:27:22,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2020-10-16 04:27:22,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2020-10-16 04:27:22,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 04:27:22,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2020-10-16 04:27:22,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 04:27:22,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 04:27:22,434 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 04:27:22,435 INFO L185 Difference]: Start difference. First operand has 57 places, 46 transitions, 179 flow. Second operand 3 states and 267 transitions. [2020-10-16 04:27:22,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 53 transitions, 237 flow [2020-10-16 04:27:22,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 04:27:22,461 INFO L241 Difference]: Finished difference. Result has 52 places, 46 transitions, 192 flow [2020-10-16 04:27:22,461 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2020-10-16 04:27:22,461 INFO L342 CegarLoopForPetriNet]: 55 programPoint places, -3 predicate places. [2020-10-16 04:27:22,461 INFO L481 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 192 flow [2020-10-16 04:27:22,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 04:27:22,462 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:27:22,462 INFO L255 CegarLoopForPetriNet]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 04:27:22,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-16 04:27:22,462 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 04:27:22,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:27:22,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1114819578, now seen corresponding path program 1 times [2020-10-16 04:27:22,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:27:22,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137949733] [2020-10-16 04:27:22,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:27:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 04:27:22,471 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 04:27:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 04:27:22,477 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 04:27:22,483 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 04:27:22,483 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 04:27:22,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 04:27:22,484 WARN L371 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 04:27:22,484 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2020-10-16 04:27:22,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,499 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,499 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,499 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,499 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,509 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,509 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,510 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,510 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,510 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,510 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,512 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,512 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,512 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,512 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,513 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,513 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,513 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,513 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,514 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,514 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,514 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,515 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,516 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:27:22,517 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-10-16 04:27:22,517 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 04:27:22,517 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 04:27:22,517 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 04:27:22,517 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 04:27:22,518 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 04:27:22,518 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 04:27:22,518 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 04:27:22,518 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 04:27:22,519 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 106 places, 98 transitions, 292 flow [2020-10-16 04:27:22,532 INFO L129 PetriNetUnfolder]: 17/169 cut-off events. [2020-10-16 04:27:22,532 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2020-10-16 04:27:22,533 INFO L80 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 169 events. 17/169 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 423 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 193. Up to 18 conditions per place. [2020-10-16 04:27:22,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 98 transitions, 292 flow [2020-10-16 04:27:22,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 98 transitions, 292 flow [2020-10-16 04:27:22,535 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 04:27:22,535 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 98 transitions, 292 flow [2020-10-16 04:27:22,535 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 98 transitions, 292 flow [2020-10-16 04:27:22,535 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 106 places, 98 transitions, 292 flow [2020-10-16 04:27:22,548 INFO L129 PetriNetUnfolder]: 17/169 cut-off events. [2020-10-16 04:27:22,548 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2020-10-16 04:27:22,549 INFO L80 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 169 events. 17/169 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 442 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 193. Up to 18 conditions per place. [2020-10-16 04:27:22,557 INFO L117 LiptonReduction]: Number of co-enabled transitions 6480 [2020-10-16 04:27:24,904 INFO L132 LiptonReduction]: Checked pairs total: 18368 [2020-10-16 04:27:24,904 INFO L134 LiptonReduction]: Total number of compositions: 87 [2020-10-16 04:27:24,905 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2370 [2020-10-16 04:27:24,906 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2020-10-16 04:27:24,906 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 04:27:24,906 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:27:24,906 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 04:27:24,906 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 04:27:24,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:27:24,907 INFO L82 PathProgramCache]: Analyzing trace with hash 33195023, now seen corresponding path program 1 times [2020-10-16 04:27:24,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:27:24,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452602532] [2020-10-16 04:27:24,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:27:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 04:27:24,925 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 04:27:24,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452602532] [2020-10-16 04:27:24,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 04:27:24,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 04:27:24,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212952588] [2020-10-16 04:27:24,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 04:27:24,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 04:27:24,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 04:27:24,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 04:27:24,928 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 185 [2020-10-16 04:27:24,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 200 flow. Second operand 3 states. [2020-10-16 04:27:24,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 04:27:24,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 185 [2020-10-16 04:27:24,928 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 04:28:51,483 INFO L129 PetriNetUnfolder]: 283546/365244 cut-off events. [2020-10-16 04:28:51,483 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2020-10-16 04:28:53,856 INFO L80 FinitePrefix]: Finished finitePrefix Result has 708083 conditions, 365244 events. 283546/365244 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 24248. Compared 2695219 event pairs, 212677 based on Foata normal form. 59245/309146 useless extension candidates. Maximal degree in co-relation 707995. Up to 341753 conditions per place. [2020-10-16 04:28:55,735 INFO L132 encePairwiseOnDemand]: 160/185 looper letters, 32 selfloop transitions, 9 changer transitions 0/60 dead transitions. [2020-10-16 04:28:55,736 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 298 flow [2020-10-16 04:28:55,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 04:28:55,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 04:28:55,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2020-10-16 04:28:55,737 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5171171171171172 [2020-10-16 04:28:55,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2020-10-16 04:28:55,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2020-10-16 04:28:55,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 04:28:55,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2020-10-16 04:28:55,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 04:28:55,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 04:28:55,741 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 04:28:55,741 INFO L185 Difference]: Start difference. First operand has 62 places, 52 transitions, 200 flow. Second operand 3 states and 287 transitions. [2020-10-16 04:28:55,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 298 flow [2020-10-16 04:28:55,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 60 transitions, 242 flow, removed 28 selfloop flow, removed 0 redundant places. [2020-10-16 04:28:55,743 INFO L241 Difference]: Finished difference. Result has 64 places, 52 transitions, 203 flow [2020-10-16 04:28:55,743 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2020-10-16 04:28:55,744 INFO L342 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2020-10-16 04:28:55,744 INFO L481 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 203 flow [2020-10-16 04:28:55,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 04:28:55,744 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:28:55,744 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 04:28:55,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 04:28:55,744 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 04:28:55,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:28:55,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1989496724, now seen corresponding path program 1 times [2020-10-16 04:28:55,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:28:55,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762592962] [2020-10-16 04:28:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:28:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 04:28:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 04:28:55,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762592962] [2020-10-16 04:28:55,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 04:28:55,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 04:28:55,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310184804] [2020-10-16 04:28:55,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 04:28:55,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 04:28:55,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 04:28:55,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 04:28:55,779 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 185 [2020-10-16 04:28:55,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 203 flow. Second operand 3 states. [2020-10-16 04:28:55,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 04:28:55,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 185 [2020-10-16 04:28:55,780 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 04:29:16,300 INFO L129 PetriNetUnfolder]: 77648/116875 cut-off events. [2020-10-16 04:29:16,300 INFO L130 PetriNetUnfolder]: For 113583/275053 co-relation queries the response was YES. [2020-10-16 04:29:17,106 INFO L80 FinitePrefix]: Finished finitePrefix Result has 240066 conditions, 116875 events. 77648/116875 cut-off events. For 113583/275053 co-relation queries the response was YES. Maximal size of possible extension queue 8144. Compared 1056557 event pairs, 29560 based on Foata normal form. 77138/182813 useless extension candidates. Maximal degree in co-relation 240041. Up to 81857 conditions per place. [2020-10-16 04:29:17,824 INFO L132 encePairwiseOnDemand]: 169/185 looper letters, 25 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2020-10-16 04:29:17,824 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 269 flow [2020-10-16 04:29:17,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 04:29:17,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 04:29:17,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2020-10-16 04:29:17,825 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2020-10-16 04:29:17,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2020-10-16 04:29:17,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2020-10-16 04:29:17,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 04:29:17,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2020-10-16 04:29:17,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 04:29:17,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 04:29:17,828 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 04:29:17,828 INFO L185 Difference]: Start difference. First operand has 64 places, 52 transitions, 203 flow. Second operand 3 states and 296 transitions. [2020-10-16 04:29:17,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 269 flow [2020-10-16 04:29:17,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 04:29:17,842 INFO L241 Difference]: Finished difference. Result has 58 places, 52 transitions, 218 flow [2020-10-16 04:29:17,842 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2020-10-16 04:29:17,842 INFO L342 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2020-10-16 04:29:17,842 INFO L481 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 218 flow [2020-10-16 04:29:17,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 04:29:17,842 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:29:17,843 INFO L255 CegarLoopForPetriNet]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 04:29:17,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-16 04:29:17,843 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 04:29:17,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:29:17,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1636097969, now seen corresponding path program 1 times [2020-10-16 04:29:17,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:29:17,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935111395] [2020-10-16 04:29:17,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:29:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 04:29:17,852 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 04:29:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 04:29:17,858 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 04:29:17,864 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 04:29:17,865 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 04:29:17,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-16 04:29:17,865 WARN L371 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 04:29:17,866 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2020-10-16 04:29:17,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,875 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,875 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,876 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,876 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,877 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,877 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,877 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,877 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,877 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,877 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,877 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,878 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,878 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,878 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,878 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,879 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,879 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,879 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,879 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,879 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,879 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,879 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,880 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,880 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,881 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,881 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,882 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,882 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,883 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,883 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,883 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,883 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,896 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,897 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,897 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,897 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,904 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,904 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,905 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,906 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,906 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,906 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,907 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,907 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,907 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,907 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,908 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,908 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,908 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,909 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 04:29:17,909 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-16 04:29:17,910 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 04:29:17,910 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 04:29:17,910 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 04:29:17,910 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 04:29:17,910 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 04:29:17,910 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 04:29:17,910 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 04:29:17,911 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 04:29:17,912 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 117 places, 108 transitions, 333 flow [2020-10-16 04:29:17,925 INFO L129 PetriNetUnfolder]: 19/188 cut-off events. [2020-10-16 04:29:17,925 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2020-10-16 04:29:17,926 INFO L80 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 188 events. 19/188 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 461 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 223. Up to 20 conditions per place. [2020-10-16 04:29:17,927 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 108 transitions, 333 flow [2020-10-16 04:29:17,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 108 transitions, 333 flow [2020-10-16 04:29:17,928 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 04:29:17,928 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 108 transitions, 333 flow [2020-10-16 04:29:17,929 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 108 transitions, 333 flow [2020-10-16 04:29:17,929 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 117 places, 108 transitions, 333 flow [2020-10-16 04:29:17,943 INFO L129 PetriNetUnfolder]: 19/188 cut-off events. [2020-10-16 04:29:17,944 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2020-10-16 04:29:17,946 INFO L80 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 188 events. 19/188 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 493 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 223. Up to 20 conditions per place. [2020-10-16 04:29:17,955 INFO L117 LiptonReduction]: Number of co-enabled transitions 8100 [2020-10-16 04:29:20,444 INFO L132 LiptonReduction]: Checked pairs total: 23018 [2020-10-16 04:29:20,444 INFO L134 LiptonReduction]: Total number of compositions: 96 [2020-10-16 04:29:20,444 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2516 [2020-10-16 04:29:20,445 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2020-10-16 04:29:20,445 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 04:29:20,445 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 04:29:20,445 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 04:29:20,446 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 04:29:20,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 04:29:20,446 INFO L82 PathProgramCache]: Analyzing trace with hash 39858408, now seen corresponding path program 1 times [2020-10-16 04:29:20,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 04:29:20,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003025160] [2020-10-16 04:29:20,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 04:29:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 04:29:20,468 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 04:29:20,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003025160] [2020-10-16 04:29:20,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 04:29:20,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 04:29:20,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546168938] [2020-10-16 04:29:20,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 04:29:20,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 04:29:20,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 04:29:20,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 04:29:20,470 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 204 [2020-10-16 04:29:20,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 233 flow. Second operand 3 states. [2020-10-16 04:29:20,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 04:29:20,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 204 [2020-10-16 04:29:20,471 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand