/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:01:17,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:01:17,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:01:17,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:01:17,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:01:17,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:01:17,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:01:17,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:01:17,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:01:17,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:01:17,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:01:17,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:01:17,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:01:17,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:01:17,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:01:17,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:01:17,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:01:17,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:01:17,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:01:17,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:01:17,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:01:17,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:01:17,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:01:17,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:01:17,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:01:17,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:01:17,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:01:17,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:01:17,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:01:17,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:01:17,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:01:17,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:01:17,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:01:17,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:01:17,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:01:17,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:01:17,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 01:01:17,762 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:01:17,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:01:17,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:01:17,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:01:17,764 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:01:17,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:01:17,764 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:01:17,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:01:17,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:01:17,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:01:17,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:01:17,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:01:17,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:01:17,767 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:01:17,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:01:17,768 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:01:17,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:01:17,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:01:17,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:01:17,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:01:17,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:01:17,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:01:17,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:01:17,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:01:17,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:01:17,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:01:17,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:01:17,770 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:01:17,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:01:18,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:01:18,095 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:01:18,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:01:18,101 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:01:18,102 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:01:18,103 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2020-10-16 01:01:18,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ed13f60/24ff56af3e484f1f98e151085447d3db/FLAGa7ccf075f [2020-10-16 01:01:18,739 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:01:18,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2020-10-16 01:01:18,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ed13f60/24ff56af3e484f1f98e151085447d3db/FLAGa7ccf075f [2020-10-16 01:01:18,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ed13f60/24ff56af3e484f1f98e151085447d3db [2020-10-16 01:01:18,987 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:01:18,990 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:01:18,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:01:18,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:01:18,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:01:18,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:01:18" (1/1) ... [2020-10-16 01:01:18,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e8e712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:01:18, skipping insertion in model container [2020-10-16 01:01:19,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:01:18" (1/1) ... [2020-10-16 01:01:19,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:01:19,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:01:19,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:01:19,521 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:01:19,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:01:19,650 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:01:19,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:01:19 WrapperNode [2020-10-16 01:01:19,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:01:19,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:01:19,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:01:19,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:01:19,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:01:19" (1/1) ... [2020-10-16 01:01:19,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:01:19" (1/1) ... [2020-10-16 01:01:19,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:01:19,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:01:19,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:01:19,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:01:19,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:01:19" (1/1) ... [2020-10-16 01:01:19,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:01:19" (1/1) ... [2020-10-16 01:01:19,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:01:19" (1/1) ... [2020-10-16 01:01:19,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:01:19" (1/1) ... [2020-10-16 01:01:19,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:01:19" (1/1) ... [2020-10-16 01:01:19,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:01:19" (1/1) ... [2020-10-16 01:01:19,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:01:19" (1/1) ... [2020-10-16 01:01:19,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:01:19,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:01:19,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:01:19,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:01:19,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:01:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:01:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 01:01:19,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 01:01:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:01:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:01:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:01:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:01:19,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:01:19,788 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:01:20,040 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:01:20,040 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-16 01:01:20,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:01:20 BoogieIcfgContainer [2020-10-16 01:01:20,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:01:20,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:01:20,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:01:20,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:01:20,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:01:18" (1/3) ... [2020-10-16 01:01:20,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea0ab60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:01:20, skipping insertion in model container [2020-10-16 01:01:20,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:01:19" (2/3) ... [2020-10-16 01:01:20,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea0ab60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:01:20, skipping insertion in model container [2020-10-16 01:01:20,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:01:20" (3/3) ... [2020-10-16 01:01:20,051 INFO L111 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2020-10-16 01:01:20,063 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:01:20,071 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:01:20,072 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:01:20,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,099 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,099 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,100 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,101 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,103 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,103 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,107 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,108 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,108 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,108 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:20,127 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 01:01:20,149 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:01:20,150 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:01:20,150 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:01:20,150 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:01:20,150 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:01:20,150 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:01:20,150 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:01:20,151 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:01:20,165 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 34 places, 33 transitions, 71 flow [2020-10-16 01:01:20,199 INFO L129 PetriNetUnfolder]: 3/41 cut-off events. [2020-10-16 01:01:20,199 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:01:20,204 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 41 events. 3/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2020-10-16 01:01:20,204 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 33 transitions, 71 flow [2020-10-16 01:01:20,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 33 transitions, 71 flow [2020-10-16 01:01:20,212 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:01:20,215 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 33 transitions, 71 flow [2020-10-16 01:01:20,218 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 33 transitions, 71 flow [2020-10-16 01:01:20,219 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 34 places, 33 transitions, 71 flow [2020-10-16 01:01:20,233 INFO L129 PetriNetUnfolder]: 3/41 cut-off events. [2020-10-16 01:01:20,233 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:01:20,234 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 41 events. 3/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2020-10-16 01:01:20,235 INFO L117 LiptonReduction]: Number of co-enabled transitions 240 [2020-10-16 01:01:20,773 INFO L132 LiptonReduction]: Checked pairs total: 209 [2020-10-16 01:01:20,773 INFO L134 LiptonReduction]: Total number of compositions: 32 [2020-10-16 01:01:20,776 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 566 [2020-10-16 01:01:20,783 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2020-10-16 01:01:20,783 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:01:20,783 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:20,784 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 01:01:20,785 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:01:20,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:20,791 INFO L82 PathProgramCache]: Analyzing trace with hash 4687883, now seen corresponding path program 1 times [2020-10-16 01:01:20,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:20,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205349972] [2020-10-16 01:01:20,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:01:20,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205349972] [2020-10-16 01:01:20,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:20,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:01:20,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665408153] [2020-10-16 01:01:20,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 01:01:20,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:20,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 01:01:20,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 01:01:20,987 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 65 [2020-10-16 01:01:20,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 21 flow. Second operand 2 states. [2020-10-16 01:01:20,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:20,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 65 [2020-10-16 01:01:20,991 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:20,999 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2020-10-16 01:01:20,999 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:01:20,999 INFO L80 FinitePrefix]: Finished finitePrefix Result has 13 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 1 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 01:01:21,001 INFO L132 encePairwiseOnDemand]: 63/65 looper letters, 0 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2020-10-16 01:01:21,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 17 flow [2020-10-16 01:01:21,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 01:01:21,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 01:01:21,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 106 transitions. [2020-10-16 01:01:21,035 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8153846153846154 [2020-10-16 01:01:21,036 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 106 transitions. [2020-10-16 01:01:21,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 106 transitions. [2020-10-16 01:01:21,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:21,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 106 transitions. [2020-10-16 01:01:21,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 01:01:21,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 01:01:21,051 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 01:01:21,055 INFO L185 Difference]: Start difference. First operand has 11 places, 8 transitions, 21 flow. Second operand 2 states and 106 transitions. [2020-10-16 01:01:21,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 17 flow [2020-10-16 01:01:21,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 17 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 01:01:21,061 INFO L241 Difference]: Finished difference. Result has 10 places, 6 transitions, 17 flow [2020-10-16 01:01:21,064 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=17, PETRI_PLACES=10, PETRI_TRANSITIONS=6} [2020-10-16 01:01:21,065 INFO L342 CegarLoopForPetriNet]: 11 programPoint places, -1 predicate places. [2020-10-16 01:01:21,065 INFO L481 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 17 flow [2020-10-16 01:01:21,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 01:01:21,065 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:21,066 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2020-10-16 01:01:21,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:01:21,066 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:01:21,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:21,067 INFO L82 PathProgramCache]: Analyzing trace with hash 210024220, now seen corresponding path program 1 times [2020-10-16 01:01:21,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:21,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660516656] [2020-10-16 01:01:21,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:01:21,094 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:01:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:01:21,105 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:01:21,128 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:01:21,129 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:01:21,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:01:21,132 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:01:21,133 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 01:01:21,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,141 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,143 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,143 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,143 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,144 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,145 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,145 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,146 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,146 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,147 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,148 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,149 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,149 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,149 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,149 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,155 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,155 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,155 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,156 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,156 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,156 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:21,159 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:01:21,160 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:01:21,160 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:01:21,160 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:01:21,160 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:01:21,160 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:01:21,161 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:01:21,161 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:01:21,161 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:01:21,163 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 104 flow [2020-10-16 01:01:21,178 INFO L129 PetriNetUnfolder]: 5/63 cut-off events. [2020-10-16 01:01:21,178 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 01:01:21,179 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 63 events. 5/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 42. Up to 6 conditions per place. [2020-10-16 01:01:21,179 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 46 transitions, 104 flow [2020-10-16 01:01:21,180 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 46 transitions, 104 flow [2020-10-16 01:01:21,181 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:01:21,181 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 46 transitions, 104 flow [2020-10-16 01:01:21,181 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 46 transitions, 104 flow [2020-10-16 01:01:21,181 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 104 flow [2020-10-16 01:01:21,194 INFO L129 PetriNetUnfolder]: 5/63 cut-off events. [2020-10-16 01:01:21,194 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 01:01:21,195 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 63 events. 5/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 113 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 42. Up to 6 conditions per place. [2020-10-16 01:01:21,196 INFO L117 LiptonReduction]: Number of co-enabled transitions 792 [2020-10-16 01:01:21,796 INFO L132 LiptonReduction]: Checked pairs total: 1268 [2020-10-16 01:01:21,796 INFO L134 LiptonReduction]: Total number of compositions: 40 [2020-10-16 01:01:21,796 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 615 [2020-10-16 01:01:21,799 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2020-10-16 01:01:21,799 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:01:21,799 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:21,799 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 01:01:21,800 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:01:21,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:21,800 INFO L82 PathProgramCache]: Analyzing trace with hash 240626158, now seen corresponding path program 1 times [2020-10-16 01:01:21,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:21,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124996771] [2020-10-16 01:01:21,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:21,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:01:21,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124996771] [2020-10-16 01:01:21,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:21,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:21,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721130709] [2020-10-16 01:01:21,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:21,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:21,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:21,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:21,851 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2020-10-16 01:01:21,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states. [2020-10-16 01:01:21,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:21,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2020-10-16 01:01:21,852 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:21,911 INFO L129 PetriNetUnfolder]: 9/38 cut-off events. [2020-10-16 01:01:21,911 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-16 01:01:21,912 INFO L80 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 38 events. 9/38 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 113 event pairs, 2 based on Foata normal form. 24/52 useless extension candidates. Maximal degree in co-relation 60. Up to 17 conditions per place. [2020-10-16 01:01:21,912 INFO L132 encePairwiseOnDemand]: 81/86 looper letters, 9 selfloop transitions, 3 changer transitions 0/16 dead transitions. [2020-10-16 01:01:21,913 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 16 transitions, 68 flow [2020-10-16 01:01:21,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:21,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:21,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2020-10-16 01:01:21,920 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5232558139534884 [2020-10-16 01:01:21,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 135 transitions. [2020-10-16 01:01:21,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 135 transitions. [2020-10-16 01:01:21,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:21,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 135 transitions. [2020-10-16 01:01:21,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:21,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:21,928 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:21,928 INFO L185 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 135 transitions. [2020-10-16 01:01:21,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 16 transitions, 68 flow [2020-10-16 01:01:21,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 16 transitions, 66 flow, removed 1 selfloop flow, removed 0 redundant places. [2020-10-16 01:01:21,931 INFO L241 Difference]: Finished difference. Result has 21 places, 14 transitions, 56 flow [2020-10-16 01:01:21,931 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=21, PETRI_TRANSITIONS=14} [2020-10-16 01:01:21,931 INFO L342 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2020-10-16 01:01:21,931 INFO L481 AbstractCegarLoop]: Abstraction has has 21 places, 14 transitions, 56 flow [2020-10-16 01:01:21,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:01:21,932 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:21,932 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:21,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:01:21,933 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:01:21,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:21,933 INFO L82 PathProgramCache]: Analyzing trace with hash 109807895, now seen corresponding path program 1 times [2020-10-16 01:01:21,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:21,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057894747] [2020-10-16 01:01:21,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:22,022 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 01:01:22,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057894747] [2020-10-16 01:01:22,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:22,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:22,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710849980] [2020-10-16 01:01:22,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:22,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:22,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:22,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:22,028 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 86 [2020-10-16 01:01:22,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 56 flow. Second operand 3 states. [2020-10-16 01:01:22,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:22,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 86 [2020-10-16 01:01:22,033 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:22,068 INFO L129 PetriNetUnfolder]: 7/37 cut-off events. [2020-10-16 01:01:22,069 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2020-10-16 01:01:22,069 INFO L80 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 37 events. 7/37 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 102 event pairs, 5 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 74. Up to 16 conditions per place. [2020-10-16 01:01:22,070 INFO L132 encePairwiseOnDemand]: 82/86 looper letters, 9 selfloop transitions, 4 changer transitions 0/17 dead transitions. [2020-10-16 01:01:22,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 94 flow [2020-10-16 01:01:22,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:22,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:22,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2020-10-16 01:01:22,074 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5232558139534884 [2020-10-16 01:01:22,074 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 135 transitions. [2020-10-16 01:01:22,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 135 transitions. [2020-10-16 01:01:22,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:22,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 135 transitions. [2020-10-16 01:01:22,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:22,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:22,079 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:22,079 INFO L185 Difference]: Start difference. First operand has 21 places, 14 transitions, 56 flow. Second operand 3 states and 135 transitions. [2020-10-16 01:01:22,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 94 flow [2020-10-16 01:01:22,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:01:22,082 INFO L241 Difference]: Finished difference. Result has 23 places, 16 transitions, 78 flow [2020-10-16 01:01:22,083 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=23, PETRI_TRANSITIONS=16} [2020-10-16 01:01:22,084 INFO L342 CegarLoopForPetriNet]: 18 programPoint places, 5 predicate places. [2020-10-16 01:01:22,084 INFO L481 AbstractCegarLoop]: Abstraction has has 23 places, 16 transitions, 78 flow [2020-10-16 01:01:22,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:01:22,084 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:22,084 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2020-10-16 01:01:22,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:01:22,085 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:01:22,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:22,085 INFO L82 PathProgramCache]: Analyzing trace with hash -891005170, now seen corresponding path program 1 times [2020-10-16 01:01:22,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:22,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894012252] [2020-10-16 01:01:22,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:01:22,119 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:01:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:01:22,141 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:01:22,154 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:01:22,154 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:01:22,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:01:22,155 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:01:22,157 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 01:01:22,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,169 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,169 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,169 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,169 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,170 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,170 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,170 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,170 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,171 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,172 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,172 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,172 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,172 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,173 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,173 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,173 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,173 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,173 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,174 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,174 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,174 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,174 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,174 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,175 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,175 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,175 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,175 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,176 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,176 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,176 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,176 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,176 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,176 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,177 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,177 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:22,185 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 01:01:22,186 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:01:22,186 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:01:22,186 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:01:22,186 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:01:22,186 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:01:22,186 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:01:22,187 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:01:22,187 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:01:22,188 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 59 transitions, 139 flow [2020-10-16 01:01:22,211 INFO L129 PetriNetUnfolder]: 7/85 cut-off events. [2020-10-16 01:01:22,211 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 01:01:22,217 INFO L80 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 85 events. 7/85 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-10-16 01:01:22,218 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 59 transitions, 139 flow [2020-10-16 01:01:22,219 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 59 transitions, 139 flow [2020-10-16 01:01:22,220 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:01:22,221 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 59 transitions, 139 flow [2020-10-16 01:01:22,221 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 59 transitions, 139 flow [2020-10-16 01:01:22,222 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 59 transitions, 139 flow [2020-10-16 01:01:22,237 INFO L129 PetriNetUnfolder]: 7/85 cut-off events. [2020-10-16 01:01:22,237 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 01:01:22,238 INFO L80 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 85 events. 7/85 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 186 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-10-16 01:01:22,240 INFO L117 LiptonReduction]: Number of co-enabled transitions 1656 [2020-10-16 01:01:23,002 INFO L132 LiptonReduction]: Checked pairs total: 2526 [2020-10-16 01:01:23,003 INFO L134 LiptonReduction]: Total number of compositions: 52 [2020-10-16 01:01:23,003 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 784 [2020-10-16 01:01:23,005 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2020-10-16 01:01:23,005 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-16 01:01:23,006 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:23,006 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 01:01:23,007 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:01:23,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:23,007 INFO L82 PathProgramCache]: Analyzing trace with hash 359632331, now seen corresponding path program 1 times [2020-10-16 01:01:23,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:23,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913565577] [2020-10-16 01:01:23,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:23,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:01:23,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913565577] [2020-10-16 01:01:23,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:23,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:23,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636681240] [2020-10-16 01:01:23,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:23,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:23,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:23,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:23,050 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 111 [2020-10-16 01:01:23,050 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 17 transitions, 55 flow. Second operand 3 states. [2020-10-16 01:01:23,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:23,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 111 [2020-10-16 01:01:23,050 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:23,117 INFO L129 PetriNetUnfolder]: 108/212 cut-off events. [2020-10-16 01:01:23,118 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2020-10-16 01:01:23,118 INFO L80 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 212 events. 108/212 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 916 event pairs, 46 based on Foata normal form. 98/240 useless extension candidates. Maximal degree in co-relation 402. Up to 124 conditions per place. [2020-10-16 01:01:23,120 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 14 selfloop transitions, 4 changer transitions 0/23 dead transitions. [2020-10-16 01:01:23,121 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 103 flow [2020-10-16 01:01:23,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:23,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:23,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2020-10-16 01:01:23,123 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2020-10-16 01:01:23,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2020-10-16 01:01:23,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2020-10-16 01:01:23,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:23,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2020-10-16 01:01:23,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:23,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:23,125 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:23,125 INFO L185 Difference]: Start difference. First operand has 24 places, 17 transitions, 55 flow. Second operand 3 states and 174 transitions. [2020-10-16 01:01:23,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 103 flow [2020-10-16 01:01:23,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 97 flow, removed 3 selfloop flow, removed 0 redundant places. [2020-10-16 01:01:23,127 INFO L241 Difference]: Finished difference. Result has 27 places, 19 transitions, 77 flow [2020-10-16 01:01:23,127 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2020-10-16 01:01:23,128 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2020-10-16 01:01:23,128 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 77 flow [2020-10-16 01:01:23,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:01:23,128 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:23,128 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:23,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:01:23,129 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:01:23,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:23,129 INFO L82 PathProgramCache]: Analyzing trace with hash 2061810264, now seen corresponding path program 1 times [2020-10-16 01:01:23,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:23,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997420838] [2020-10-16 01:01:23,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:23,146 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 01:01:23,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997420838] [2020-10-16 01:01:23,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:23,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:23,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585078788] [2020-10-16 01:01:23,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:23,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:23,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:23,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:23,149 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 111 [2020-10-16 01:01:23,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 77 flow. Second operand 3 states. [2020-10-16 01:01:23,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:23,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 111 [2020-10-16 01:01:23,149 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:23,204 INFO L129 PetriNetUnfolder]: 130/268 cut-off events. [2020-10-16 01:01:23,205 INFO L130 PetriNetUnfolder]: For 179/217 co-relation queries the response was YES. [2020-10-16 01:01:23,206 INFO L80 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 268 events. 130/268 cut-off events. For 179/217 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1245 event pairs, 40 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 696. Up to 156 conditions per place. [2020-10-16 01:01:23,208 INFO L132 encePairwiseOnDemand]: 106/111 looper letters, 17 selfloop transitions, 6 changer transitions 0/28 dead transitions. [2020-10-16 01:01:23,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 159 flow [2020-10-16 01:01:23,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:23,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2020-10-16 01:01:23,210 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2020-10-16 01:01:23,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions. [2020-10-16 01:01:23,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions. [2020-10-16 01:01:23,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:23,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions. [2020-10-16 01:01:23,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:23,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:23,213 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:23,213 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 77 flow. Second operand 3 states and 169 transitions. [2020-10-16 01:01:23,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 159 flow [2020-10-16 01:01:23,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 145 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:01:23,216 INFO L241 Difference]: Finished difference. Result has 29 places, 23 transitions, 117 flow [2020-10-16 01:01:23,216 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2020-10-16 01:01:23,216 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2020-10-16 01:01:23,216 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 117 flow [2020-10-16 01:01:23,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:01:23,216 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:23,217 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:23,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:01:23,217 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:01:23,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:23,217 INFO L82 PathProgramCache]: Analyzing trace with hash -508395071, now seen corresponding path program 1 times [2020-10-16 01:01:23,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:23,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151022342] [2020-10-16 01:01:23,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:23,249 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 01:01:23,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151022342] [2020-10-16 01:01:23,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:23,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:01:23,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821078569] [2020-10-16 01:01:23,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:01:23,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:23,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:01:23,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:01:23,252 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 111 [2020-10-16 01:01:23,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 117 flow. Second operand 4 states. [2020-10-16 01:01:23,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:23,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 111 [2020-10-16 01:01:23,253 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:23,309 INFO L129 PetriNetUnfolder]: 101/217 cut-off events. [2020-10-16 01:01:23,309 INFO L130 PetriNetUnfolder]: For 263/386 co-relation queries the response was YES. [2020-10-16 01:01:23,310 INFO L80 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 217 events. 101/217 cut-off events. For 263/386 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1018 event pairs, 18 based on Foata normal form. 6/190 useless extension candidates. Maximal degree in co-relation 676. Up to 176 conditions per place. [2020-10-16 01:01:23,312 INFO L132 encePairwiseOnDemand]: 109/111 looper letters, 22 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2020-10-16 01:01:23,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 195 flow [2020-10-16 01:01:23,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:23,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:23,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2020-10-16 01:01:23,314 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5105105105105106 [2020-10-16 01:01:23,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 170 transitions. [2020-10-16 01:01:23,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 170 transitions. [2020-10-16 01:01:23,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:23,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 170 transitions. [2020-10-16 01:01:23,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:23,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:23,316 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:23,316 INFO L185 Difference]: Start difference. First operand has 29 places, 23 transitions, 117 flow. Second operand 3 states and 170 transitions. [2020-10-16 01:01:23,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 195 flow [2020-10-16 01:01:23,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:01:23,319 INFO L241 Difference]: Finished difference. Result has 28 places, 22 transitions, 105 flow [2020-10-16 01:01:23,319 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2020-10-16 01:01:23,320 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2020-10-16 01:01:23,320 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 105 flow [2020-10-16 01:01:23,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:01:23,320 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:23,320 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:23,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:01:23,321 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:01:23,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:23,321 INFO L82 PathProgramCache]: Analyzing trace with hash -508390409, now seen corresponding path program 1 times [2020-10-16 01:01:23,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:23,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161568454] [2020-10-16 01:01:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:23,345 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 01:01:23,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161568454] [2020-10-16 01:01:23,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:23,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:01:23,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209897417] [2020-10-16 01:01:23,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:01:23,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:23,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:01:23,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:01:23,348 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 111 [2020-10-16 01:01:23,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 105 flow. Second operand 4 states. [2020-10-16 01:01:23,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:23,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 111 [2020-10-16 01:01:23,349 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:23,392 INFO L129 PetriNetUnfolder]: 81/182 cut-off events. [2020-10-16 01:01:23,392 INFO L130 PetriNetUnfolder]: For 175/280 co-relation queries the response was YES. [2020-10-16 01:01:23,393 INFO L80 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 182 events. 81/182 cut-off events. For 175/280 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 776 event pairs, 14 based on Foata normal form. 4/158 useless extension candidates. Maximal degree in co-relation 530. Up to 142 conditions per place. [2020-10-16 01:01:23,395 INFO L132 encePairwiseOnDemand]: 109/111 looper letters, 20 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2020-10-16 01:01:23,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 171 flow [2020-10-16 01:01:23,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:23,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:23,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2020-10-16 01:01:23,396 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2020-10-16 01:01:23,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 165 transitions. [2020-10-16 01:01:23,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 165 transitions. [2020-10-16 01:01:23,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:23,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 165 transitions. [2020-10-16 01:01:23,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:23,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:23,398 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:23,399 INFO L185 Difference]: Start difference. First operand has 28 places, 22 transitions, 105 flow. Second operand 3 states and 165 transitions. [2020-10-16 01:01:23,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 171 flow [2020-10-16 01:01:23,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:01:23,401 INFO L241 Difference]: Finished difference. Result has 28 places, 21 transitions, 103 flow [2020-10-16 01:01:23,401 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2020-10-16 01:01:23,401 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2020-10-16 01:01:23,401 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 103 flow [2020-10-16 01:01:23,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:01:23,402 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:23,402 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:23,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 01:01:23,402 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:01:23,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:23,403 INFO L82 PathProgramCache]: Analyzing trace with hash 960774069, now seen corresponding path program 1 times [2020-10-16 01:01:23,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:23,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505616683] [2020-10-16 01:01:23,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:23,420 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 01:01:23,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505616683] [2020-10-16 01:01:23,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:23,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:23,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948376761] [2020-10-16 01:01:23,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:23,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:23,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:23,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:23,423 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 111 [2020-10-16 01:01:23,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 103 flow. Second operand 3 states. [2020-10-16 01:01:23,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:23,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 111 [2020-10-16 01:01:23,424 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:23,493 INFO L129 PetriNetUnfolder]: 90/217 cut-off events. [2020-10-16 01:01:23,493 INFO L130 PetriNetUnfolder]: For 221/233 co-relation queries the response was YES. [2020-10-16 01:01:23,494 INFO L80 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 217 events. 90/217 cut-off events. For 221/233 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1057 event pairs, 38 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 710. Up to 135 conditions per place. [2020-10-16 01:01:23,496 INFO L132 encePairwiseOnDemand]: 106/111 looper letters, 16 selfloop transitions, 9 changer transitions 0/30 dead transitions. [2020-10-16 01:01:23,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 30 transitions, 201 flow [2020-10-16 01:01:23,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:23,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:23,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2020-10-16 01:01:23,498 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2020-10-16 01:01:23,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 165 transitions. [2020-10-16 01:01:23,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 165 transitions. [2020-10-16 01:01:23,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:23,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 165 transitions. [2020-10-16 01:01:23,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:23,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:23,500 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:23,500 INFO L185 Difference]: Start difference. First operand has 28 places, 21 transitions, 103 flow. Second operand 3 states and 165 transitions. [2020-10-16 01:01:23,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 30 transitions, 201 flow [2020-10-16 01:01:23,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:01:23,502 INFO L241 Difference]: Finished difference. Result has 31 places, 26 transitions, 179 flow [2020-10-16 01:01:23,503 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2020-10-16 01:01:23,503 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 7 predicate places. [2020-10-16 01:01:23,503 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 179 flow [2020-10-16 01:01:23,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:01:23,503 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:23,504 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-10-16 01:01:23,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 01:01:23,504 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:01:23,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:23,504 INFO L82 PathProgramCache]: Analyzing trace with hash -280874677, now seen corresponding path program 1 times [2020-10-16 01:01:23,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:23,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032086238] [2020-10-16 01:01:23,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:01:23,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:01:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:01:23,518 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:01:23,522 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:01:23,522 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:01:23,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 01:01:23,523 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:01:23,524 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 01:01:23,530 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,530 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,530 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,530 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,530 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,531 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,531 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,531 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,531 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,531 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,531 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,532 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,532 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,532 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,532 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,532 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,532 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,533 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,533 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,533 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,534 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,534 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,534 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,534 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,534 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,536 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,536 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:23,549 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 01:01:23,550 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:01:23,550 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:01:23,550 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:01:23,550 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:01:23,550 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:01:23,550 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:01:23,550 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:01:23,550 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:01:23,552 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 72 transitions, 176 flow [2020-10-16 01:01:23,561 INFO L129 PetriNetUnfolder]: 9/107 cut-off events. [2020-10-16 01:01:23,562 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 01:01:23,562 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 107 events. 9/107 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 289 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 93. Up to 10 conditions per place. [2020-10-16 01:01:23,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 72 transitions, 176 flow [2020-10-16 01:01:23,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 72 transitions, 176 flow [2020-10-16 01:01:23,564 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:01:23,564 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 72 transitions, 176 flow [2020-10-16 01:01:23,564 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 72 transitions, 176 flow [2020-10-16 01:01:23,564 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 72 transitions, 176 flow [2020-10-16 01:01:23,574 INFO L129 PetriNetUnfolder]: 9/107 cut-off events. [2020-10-16 01:01:23,574 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 01:01:23,575 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 107 events. 9/107 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 260 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 93. Up to 10 conditions per place. [2020-10-16 01:01:23,578 INFO L117 LiptonReduction]: Number of co-enabled transitions 2832 [2020-10-16 01:01:24,478 INFO L132 LiptonReduction]: Checked pairs total: 5449 [2020-10-16 01:01:24,479 INFO L134 LiptonReduction]: Total number of compositions: 66 [2020-10-16 01:01:24,479 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 915 [2020-10-16 01:01:24,481 INFO L129 PetriNetUnfolder]: 1/10 cut-off events. [2020-10-16 01:01:24,481 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-16 01:01:24,481 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:24,481 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 01:01:24,481 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 01:01:24,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:24,482 INFO L82 PathProgramCache]: Analyzing trace with hash 501811654, now seen corresponding path program 1 times [2020-10-16 01:01:24,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:24,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121509978] [2020-10-16 01:01:24,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:01:24,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121509978] [2020-10-16 01:01:24,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:24,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:24,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18219163] [2020-10-16 01:01:24,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:24,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:24,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:24,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:24,499 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 138 [2020-10-16 01:01:24,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 78 flow. Second operand 3 states. [2020-10-16 01:01:24,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:24,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 138 [2020-10-16 01:01:24,500 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:24,681 INFO L129 PetriNetUnfolder]: 729/1124 cut-off events. [2020-10-16 01:01:24,682 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2020-10-16 01:01:24,684 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2259 conditions, 1124 events. 729/1124 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5556 event pairs, 366 based on Foata normal form. 388/1129 useless extension candidates. Maximal degree in co-relation 2220. Up to 729 conditions per place. [2020-10-16 01:01:24,697 INFO L132 encePairwiseOnDemand]: 129/138 looper letters, 19 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2020-10-16 01:01:24,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 30 transitions, 140 flow [2020-10-16 01:01:24,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:24,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:24,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2020-10-16 01:01:24,700 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2020-10-16 01:01:24,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2020-10-16 01:01:24,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2020-10-16 01:01:24,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:24,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2020-10-16 01:01:24,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:24,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:24,703 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:24,703 INFO L185 Difference]: Start difference. First operand has 30 places, 23 transitions, 78 flow. Second operand 3 states and 225 transitions. [2020-10-16 01:01:24,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 30 transitions, 140 flow [2020-10-16 01:01:24,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 128 flow, removed 6 selfloop flow, removed 0 redundant places. [2020-10-16 01:01:24,705 INFO L241 Difference]: Finished difference. Result has 33 places, 24 transitions, 98 flow [2020-10-16 01:01:24,705 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2020-10-16 01:01:24,705 INFO L342 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2020-10-16 01:01:24,705 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 98 flow [2020-10-16 01:01:24,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:01:24,706 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:24,706 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:24,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 01:01:24,706 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 01:01:24,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:24,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1440704528, now seen corresponding path program 1 times [2020-10-16 01:01:24,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:24,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464373510] [2020-10-16 01:01:24,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:24,733 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 01:01:24,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464373510] [2020-10-16 01:01:24,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:24,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:24,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274575831] [2020-10-16 01:01:24,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:24,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:24,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:24,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:24,738 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 138 [2020-10-16 01:01:24,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 98 flow. Second operand 3 states. [2020-10-16 01:01:24,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:24,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 138 [2020-10-16 01:01:24,738 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:24,953 INFO L129 PetriNetUnfolder]: 982/1543 cut-off events. [2020-10-16 01:01:24,954 INFO L130 PetriNetUnfolder]: For 1031/1615 co-relation queries the response was YES. [2020-10-16 01:01:24,959 INFO L80 FinitePrefix]: Finished finitePrefix Result has 4107 conditions, 1543 events. 982/1543 cut-off events. For 1031/1615 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8024 event pairs, 363 based on Foata normal form. 1/1144 useless extension candidates. Maximal degree in co-relation 4069. Up to 1010 conditions per place. [2020-10-16 01:01:24,975 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 23 selfloop transitions, 8 changer transitions 0/37 dead transitions. [2020-10-16 01:01:24,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 210 flow [2020-10-16 01:01:24,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:24,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2020-10-16 01:01:24,978 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5241545893719807 [2020-10-16 01:01:24,978 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2020-10-16 01:01:24,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2020-10-16 01:01:24,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:24,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2020-10-16 01:01:24,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:24,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:24,980 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:24,981 INFO L185 Difference]: Start difference. First operand has 33 places, 24 transitions, 98 flow. Second operand 3 states and 217 transitions. [2020-10-16 01:01:24,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 210 flow [2020-10-16 01:01:24,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:01:24,989 INFO L241 Difference]: Finished difference. Result has 35 places, 30 transitions, 156 flow [2020-10-16 01:01:24,990 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2020-10-16 01:01:24,990 INFO L342 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2020-10-16 01:01:24,990 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 156 flow [2020-10-16 01:01:24,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:01:24,991 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:24,991 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:24,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 01:01:24,991 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 01:01:24,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:24,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1712156195, now seen corresponding path program 1 times [2020-10-16 01:01:24,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:24,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946350948] [2020-10-16 01:01:24,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:25,026 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 01:01:25,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946350948] [2020-10-16 01:01:25,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:25,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:01:25,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152130541] [2020-10-16 01:01:25,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:01:25,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:25,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:01:25,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:01:25,030 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 138 [2020-10-16 01:01:25,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 156 flow. Second operand 4 states. [2020-10-16 01:01:25,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:25,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 138 [2020-10-16 01:01:25,031 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:25,216 INFO L129 PetriNetUnfolder]: 783/1250 cut-off events. [2020-10-16 01:01:25,216 INFO L130 PetriNetUnfolder]: For 1417/2895 co-relation queries the response was YES. [2020-10-16 01:01:25,220 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3919 conditions, 1250 events. 783/1250 cut-off events. For 1417/2895 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6587 event pairs, 148 based on Foata normal form. 8/1003 useless extension candidates. Maximal degree in co-relation 3897. Up to 1035 conditions per place. [2020-10-16 01:01:25,233 INFO L132 encePairwiseOnDemand]: 136/138 looper letters, 33 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2020-10-16 01:01:25,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 41 transitions, 280 flow [2020-10-16 01:01:25,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:25,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2020-10-16 01:01:25,235 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5265700483091788 [2020-10-16 01:01:25,235 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2020-10-16 01:01:25,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2020-10-16 01:01:25,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:25,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2020-10-16 01:01:25,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:25,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:25,237 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:25,237 INFO L185 Difference]: Start difference. First operand has 35 places, 30 transitions, 156 flow. Second operand 3 states and 218 transitions. [2020-10-16 01:01:25,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 41 transitions, 280 flow [2020-10-16 01:01:25,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 41 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:01:25,243 INFO L241 Difference]: Finished difference. Result has 34 places, 29 transitions, 140 flow [2020-10-16 01:01:25,243 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2020-10-16 01:01:25,244 INFO L342 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2020-10-16 01:01:25,244 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 140 flow [2020-10-16 01:01:25,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:01:25,244 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:25,244 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:25,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 01:01:25,245 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:01:25,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:25,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1712165500, now seen corresponding path program 1 times [2020-10-16 01:01:25,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:25,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778502246] [2020-10-16 01:01:25,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:25,277 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 01:01:25,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778502246] [2020-10-16 01:01:25,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:25,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:01:25,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191341491] [2020-10-16 01:01:25,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:01:25,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:25,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:01:25,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:01:25,281 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 138 [2020-10-16 01:01:25,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 140 flow. Second operand 4 states. [2020-10-16 01:01:25,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:25,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 138 [2020-10-16 01:01:25,282 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:25,445 INFO L129 PetriNetUnfolder]: 625/1017 cut-off events. [2020-10-16 01:01:25,445 INFO L130 PetriNetUnfolder]: For 928/2091 co-relation queries the response was YES. [2020-10-16 01:01:25,448 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3076 conditions, 1017 events. 625/1017 cut-off events. For 928/2091 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5189 event pairs, 97 based on Foata normal form. 6/810 useless extension candidates. Maximal degree in co-relation 3036. Up to 835 conditions per place. [2020-10-16 01:01:25,458 INFO L132 encePairwiseOnDemand]: 136/138 looper letters, 31 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2020-10-16 01:01:25,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 39 transitions, 250 flow [2020-10-16 01:01:25,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:25,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:25,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2020-10-16 01:01:25,460 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2020-10-16 01:01:25,461 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 213 transitions. [2020-10-16 01:01:25,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 213 transitions. [2020-10-16 01:01:25,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:25,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 213 transitions. [2020-10-16 01:01:25,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:25,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:25,463 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:25,463 INFO L185 Difference]: Start difference. First operand has 34 places, 29 transitions, 140 flow. Second operand 3 states and 213 transitions. [2020-10-16 01:01:25,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 39 transitions, 250 flow [2020-10-16 01:01:25,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:01:25,466 INFO L241 Difference]: Finished difference. Result has 34 places, 28 transitions, 138 flow [2020-10-16 01:01:25,466 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2020-10-16 01:01:25,466 INFO L342 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2020-10-16 01:01:25,466 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 138 flow [2020-10-16 01:01:25,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:01:25,466 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:25,467 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:25,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 01:01:25,467 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:01:25,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:25,467 INFO L82 PathProgramCache]: Analyzing trace with hash -541551177, now seen corresponding path program 1 times [2020-10-16 01:01:25,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:25,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646331554] [2020-10-16 01:01:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:25,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 01:01:25,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646331554] [2020-10-16 01:01:25,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:25,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:25,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311536319] [2020-10-16 01:01:25,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:25,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:25,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:25,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:25,488 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 138 [2020-10-16 01:01:25,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 138 flow. Second operand 3 states. [2020-10-16 01:01:25,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:25,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 138 [2020-10-16 01:01:25,489 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:25,662 INFO L129 PetriNetUnfolder]: 787/1325 cut-off events. [2020-10-16 01:01:25,663 INFO L130 PetriNetUnfolder]: For 1378/1780 co-relation queries the response was YES. [2020-10-16 01:01:25,667 INFO L80 FinitePrefix]: Finished finitePrefix Result has 4109 conditions, 1325 events. 787/1325 cut-off events. For 1378/1780 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7135 event pairs, 236 based on Foata normal form. 4/1093 useless extension candidates. Maximal degree in co-relation 4088. Up to 890 conditions per place. [2020-10-16 01:01:25,680 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 24 selfloop transitions, 13 changer transitions 0/43 dead transitions. [2020-10-16 01:01:25,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 288 flow [2020-10-16 01:01:25,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:25,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2020-10-16 01:01:25,682 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2020-10-16 01:01:25,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 216 transitions. [2020-10-16 01:01:25,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 216 transitions. [2020-10-16 01:01:25,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:25,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 216 transitions. [2020-10-16 01:01:25,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:25,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:25,685 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:25,685 INFO L185 Difference]: Start difference. First operand has 34 places, 28 transitions, 138 flow. Second operand 3 states and 216 transitions. [2020-10-16 01:01:25,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 288 flow [2020-10-16 01:01:25,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:01:25,688 INFO L241 Difference]: Finished difference. Result has 37 places, 37 transitions, 262 flow [2020-10-16 01:01:25,689 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2020-10-16 01:01:25,689 INFO L342 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2020-10-16 01:01:25,689 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 262 flow [2020-10-16 01:01:25,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:01:25,689 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:25,690 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:25,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 01:01:25,690 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:01:25,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:25,690 INFO L82 PathProgramCache]: Analyzing trace with hash 391784085, now seen corresponding path program 1 times [2020-10-16 01:01:25,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:25,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106665645] [2020-10-16 01:01:25,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 01:01:25,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106665645] [2020-10-16 01:01:25,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:25,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:01:25,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077153028] [2020-10-16 01:01:25,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:01:25,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:25,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:01:25,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:01:25,716 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 138 [2020-10-16 01:01:25,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 262 flow. Second operand 4 states. [2020-10-16 01:01:25,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:25,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 138 [2020-10-16 01:01:25,717 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:25,857 INFO L129 PetriNetUnfolder]: 624/1075 cut-off events. [2020-10-16 01:01:25,857 INFO L130 PetriNetUnfolder]: For 2171/3131 co-relation queries the response was YES. [2020-10-16 01:01:25,862 INFO L80 FinitePrefix]: Finished finitePrefix Result has 4206 conditions, 1075 events. 624/1075 cut-off events. For 2171/3131 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5644 event pairs, 130 based on Foata normal form. 97/1049 useless extension candidates. Maximal degree in co-relation 4184. Up to 861 conditions per place. [2020-10-16 01:01:25,872 INFO L132 encePairwiseOnDemand]: 136/138 looper letters, 39 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2020-10-16 01:01:25,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 424 flow [2020-10-16 01:01:25,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:25,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:25,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2020-10-16 01:01:25,874 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5169082125603864 [2020-10-16 01:01:25,874 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 214 transitions. [2020-10-16 01:01:25,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 214 transitions. [2020-10-16 01:01:25,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:25,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 214 transitions. [2020-10-16 01:01:25,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:25,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:25,876 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:25,876 INFO L185 Difference]: Start difference. First operand has 37 places, 37 transitions, 262 flow. Second operand 3 states and 214 transitions. [2020-10-16 01:01:25,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 424 flow [2020-10-16 01:01:25,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 398 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:01:25,881 INFO L241 Difference]: Finished difference. Result has 36 places, 36 transitions, 240 flow [2020-10-16 01:01:25,881 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2020-10-16 01:01:25,882 INFO L342 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2020-10-16 01:01:25,882 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 240 flow [2020-10-16 01:01:25,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:01:25,882 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:25,882 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:25,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 01:01:25,882 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:01:25,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:25,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1571609863, now seen corresponding path program 1 times [2020-10-16 01:01:25,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:25,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450960292] [2020-10-16 01:01:25,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:25,898 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 01:01:25,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450960292] [2020-10-16 01:01:25,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:25,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:25,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631904227] [2020-10-16 01:01:25,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:25,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:25,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:25,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:25,901 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 138 [2020-10-16 01:01:25,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 240 flow. Second operand 3 states. [2020-10-16 01:01:25,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:25,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 138 [2020-10-16 01:01:25,901 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:26,083 INFO L129 PetriNetUnfolder]: 788/1404 cut-off events. [2020-10-16 01:01:26,084 INFO L130 PetriNetUnfolder]: For 2414/2658 co-relation queries the response was YES. [2020-10-16 01:01:26,089 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5367 conditions, 1404 events. 788/1404 cut-off events. For 2414/2658 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8331 event pairs, 257 based on Foata normal form. 10/1308 useless extension candidates. Maximal degree in co-relation 5345. Up to 989 conditions per place. [2020-10-16 01:01:26,113 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 28 selfloop transitions, 21 changer transitions 0/55 dead transitions. [2020-10-16 01:01:26,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 55 transitions, 476 flow [2020-10-16 01:01:26,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:26,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:26,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2020-10-16 01:01:26,115 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5096618357487923 [2020-10-16 01:01:26,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2020-10-16 01:01:26,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2020-10-16 01:01:26,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:26,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2020-10-16 01:01:26,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:26,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:26,119 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:26,119 INFO L185 Difference]: Start difference. First operand has 36 places, 36 transitions, 240 flow. Second operand 3 states and 211 transitions. [2020-10-16 01:01:26,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 55 transitions, 476 flow [2020-10-16 01:01:26,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 55 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:01:26,124 INFO L241 Difference]: Finished difference. Result has 39 places, 49 transitions, 458 flow [2020-10-16 01:01:26,124 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=458, PETRI_PLACES=39, PETRI_TRANSITIONS=49} [2020-10-16 01:01:26,125 INFO L342 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2020-10-16 01:01:26,125 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 49 transitions, 458 flow [2020-10-16 01:01:26,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:01:26,125 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:26,125 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:26,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-16 01:01:26,126 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:01:26,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:26,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1475397779, now seen corresponding path program 1 times [2020-10-16 01:01:26,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:26,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253248287] [2020-10-16 01:01:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:01:26,138 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:01:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:01:26,155 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:01:26,165 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:01:26,166 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:01:26,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 01:01:26,166 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:01:26,167 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 01:01:26,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,177 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,177 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:26,201 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 01:01:26,201 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:01:26,201 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:01:26,201 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:01:26,202 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:01:26,202 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:01:26,202 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:01:26,202 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:01:26,202 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:01:26,204 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 90 places, 85 transitions, 215 flow [2020-10-16 01:01:26,217 INFO L129 PetriNetUnfolder]: 11/129 cut-off events. [2020-10-16 01:01:26,217 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 01:01:26,218 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 129 events. 11/129 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 368 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 121. Up to 12 conditions per place. [2020-10-16 01:01:26,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 85 transitions, 215 flow [2020-10-16 01:01:26,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 85 transitions, 215 flow [2020-10-16 01:01:26,220 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:01:26,221 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 85 transitions, 215 flow [2020-10-16 01:01:26,221 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 85 transitions, 215 flow [2020-10-16 01:01:26,221 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 90 places, 85 transitions, 215 flow [2020-10-16 01:01:26,249 INFO L129 PetriNetUnfolder]: 11/129 cut-off events. [2020-10-16 01:01:26,249 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 01:01:26,250 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 129 events. 11/129 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 337 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 121. Up to 12 conditions per place. [2020-10-16 01:01:26,255 INFO L117 LiptonReduction]: Number of co-enabled transitions 4320 [2020-10-16 01:01:27,290 INFO L132 LiptonReduction]: Checked pairs total: 8003 [2020-10-16 01:01:27,290 INFO L134 LiptonReduction]: Total number of compositions: 79 [2020-10-16 01:01:27,290 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1070 [2020-10-16 01:01:27,293 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2020-10-16 01:01:27,293 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:01:27,293 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:27,293 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 01:01:27,294 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 01:01:27,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:27,294 INFO L82 PathProgramCache]: Analyzing trace with hash 666270872, now seen corresponding path program 1 times [2020-10-16 01:01:27,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:27,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814607625] [2020-10-16 01:01:27,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:27,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:01:27,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814607625] [2020-10-16 01:01:27,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:27,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:27,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811597744] [2020-10-16 01:01:27,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:27,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:27,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:27,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:27,315 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 164 [2020-10-16 01:01:27,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 101 flow. Second operand 3 states. [2020-10-16 01:01:27,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:27,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 164 [2020-10-16 01:01:27,316 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:28,019 INFO L129 PetriNetUnfolder]: 4086/5636 cut-off events. [2020-10-16 01:01:28,019 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2020-10-16 01:01:28,039 INFO L80 FinitePrefix]: Finished finitePrefix Result has 11288 conditions, 5636 events. 4086/5636 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 29113 event pairs, 2222 based on Foata normal form. 1542/5269 useless extension candidates. Maximal degree in co-relation 11238. Up to 3830 conditions per place. [2020-10-16 01:01:28,088 INFO L132 encePairwiseOnDemand]: 153/164 looper letters, 24 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2020-10-16 01:01:28,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 179 flow [2020-10-16 01:01:28,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:28,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:28,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2020-10-16 01:01:28,091 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5548780487804879 [2020-10-16 01:01:28,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2020-10-16 01:01:28,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2020-10-16 01:01:28,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:28,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2020-10-16 01:01:28,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:28,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:28,094 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:28,095 INFO L185 Difference]: Start difference. First operand has 36 places, 28 transitions, 101 flow. Second operand 3 states and 273 transitions. [2020-10-16 01:01:28,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 179 flow [2020-10-16 01:01:28,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 159 flow, removed 10 selfloop flow, removed 0 redundant places. [2020-10-16 01:01:28,097 INFO L241 Difference]: Finished difference. Result has 39 places, 29 transitions, 119 flow [2020-10-16 01:01:28,098 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2020-10-16 01:01:28,098 INFO L342 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2020-10-16 01:01:28,099 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 119 flow [2020-10-16 01:01:28,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:01:28,100 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:28,100 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:28,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 01:01:28,100 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 01:01:28,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:28,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1690072825, now seen corresponding path program 1 times [2020-10-16 01:01:28,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:28,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290060008] [2020-10-16 01:01:28,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:28,131 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 01:01:28,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290060008] [2020-10-16 01:01:28,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:28,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:28,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86161000] [2020-10-16 01:01:28,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:28,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:28,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:28,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:28,135 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 164 [2020-10-16 01:01:28,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 119 flow. Second operand 3 states. [2020-10-16 01:01:28,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:28,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 164 [2020-10-16 01:01:28,136 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:28,994 INFO L129 PetriNetUnfolder]: 5695/7939 cut-off events. [2020-10-16 01:01:28,994 INFO L130 PetriNetUnfolder]: For 5201/12034 co-relation queries the response was YES. [2020-10-16 01:01:29,025 INFO L80 FinitePrefix]: Finished finitePrefix Result has 20789 conditions, 7939 events. 5695/7939 cut-off events. For 5201/12034 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 42835 event pairs, 2414 based on Foata normal form. 1/5741 useless extension candidates. Maximal degree in co-relation 20750. Up to 5467 conditions per place. [2020-10-16 01:01:29,092 INFO L132 encePairwiseOnDemand]: 157/164 looper letters, 29 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2020-10-16 01:01:29,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 261 flow [2020-10-16 01:01:29,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:29,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:29,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2020-10-16 01:01:29,094 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5447154471544715 [2020-10-16 01:01:29,094 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2020-10-16 01:01:29,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2020-10-16 01:01:29,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:29,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2020-10-16 01:01:29,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:29,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:29,096 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:29,096 INFO L185 Difference]: Start difference. First operand has 39 places, 29 transitions, 119 flow. Second operand 3 states and 268 transitions. [2020-10-16 01:01:29,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 261 flow [2020-10-16 01:01:29,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 239 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:01:29,118 INFO L241 Difference]: Finished difference. Result has 41 places, 37 transitions, 195 flow [2020-10-16 01:01:29,118 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2020-10-16 01:01:29,119 INFO L342 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2020-10-16 01:01:29,119 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 195 flow [2020-10-16 01:01:29,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:01:29,119 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:29,119 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:29,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-16 01:01:29,119 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 01:01:29,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:29,120 INFO L82 PathProgramCache]: Analyzing trace with hash 852640313, now seen corresponding path program 1 times [2020-10-16 01:01:29,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:29,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637997415] [2020-10-16 01:01:29,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:29,141 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 01:01:29,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637997415] [2020-10-16 01:01:29,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:29,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:01:29,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947236732] [2020-10-16 01:01:29,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:01:29,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:29,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:01:29,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:01:29,143 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 164 [2020-10-16 01:01:29,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 195 flow. Second operand 4 states. [2020-10-16 01:01:29,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:29,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 164 [2020-10-16 01:01:29,144 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:29,759 INFO L129 PetriNetUnfolder]: 4588/6450 cut-off events. [2020-10-16 01:01:29,759 INFO L130 PetriNetUnfolder]: For 6847/26864 co-relation queries the response was YES. [2020-10-16 01:01:29,774 INFO L80 FinitePrefix]: Finished finitePrefix Result has 19810 conditions, 6450 events. 4588/6450 cut-off events. For 6847/26864 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 35347 event pairs, 770 based on Foata normal form. 10/4950 useless extension candidates. Maximal degree in co-relation 19787. Up to 5323 conditions per place. [2020-10-16 01:01:29,818 INFO L132 encePairwiseOnDemand]: 162/164 looper letters, 43 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2020-10-16 01:01:29,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 357 flow [2020-10-16 01:01:29,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:29,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:29,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2020-10-16 01:01:29,820 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5345528455284553 [2020-10-16 01:01:29,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2020-10-16 01:01:29,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2020-10-16 01:01:29,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:29,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2020-10-16 01:01:29,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:29,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:29,823 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:29,823 INFO L185 Difference]: Start difference. First operand has 41 places, 37 transitions, 195 flow. Second operand 3 states and 263 transitions. [2020-10-16 01:01:29,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 357 flow [2020-10-16 01:01:29,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 52 transitions, 327 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:01:29,842 INFO L241 Difference]: Finished difference. Result has 40 places, 36 transitions, 175 flow [2020-10-16 01:01:29,843 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2020-10-16 01:01:29,843 INFO L342 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2020-10-16 01:01:29,843 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 175 flow [2020-10-16 01:01:29,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:01:29,843 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:29,843 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:29,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-16 01:01:29,844 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:01:29,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:29,844 INFO L82 PathProgramCache]: Analyzing trace with hash 852652394, now seen corresponding path program 1 times [2020-10-16 01:01:29,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:29,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101892523] [2020-10-16 01:01:29,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:29,867 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 01:01:29,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101892523] [2020-10-16 01:01:29,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:29,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:01:29,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92629036] [2020-10-16 01:01:29,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:01:29,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:29,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:01:29,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:01:29,870 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 164 [2020-10-16 01:01:29,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 175 flow. Second operand 4 states. [2020-10-16 01:01:29,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:29,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 164 [2020-10-16 01:01:29,871 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:30,430 INFO L129 PetriNetUnfolder]: 3689/5236 cut-off events. [2020-10-16 01:01:30,430 INFO L130 PetriNetUnfolder]: For 4507/18958 co-relation queries the response was YES. [2020-10-16 01:01:30,448 INFO L80 FinitePrefix]: Finished finitePrefix Result has 15483 conditions, 5236 events. 3689/5236 cut-off events. For 4507/18958 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 27923 event pairs, 585 based on Foata normal form. 8/3989 useless extension candidates. Maximal degree in co-relation 15442. Up to 4309 conditions per place. [2020-10-16 01:01:30,479 INFO L132 encePairwiseOnDemand]: 162/164 looper letters, 41 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2020-10-16 01:01:30,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 321 flow [2020-10-16 01:01:30,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:30,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:30,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2020-10-16 01:01:30,481 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5365853658536586 [2020-10-16 01:01:30,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2020-10-16 01:01:30,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2020-10-16 01:01:30,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:30,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2020-10-16 01:01:30,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:30,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:30,484 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:30,484 INFO L185 Difference]: Start difference. First operand has 40 places, 36 transitions, 175 flow. Second operand 3 states and 264 transitions. [2020-10-16 01:01:30,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 321 flow [2020-10-16 01:01:30,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:01:30,487 INFO L241 Difference]: Finished difference. Result has 40 places, 35 transitions, 173 flow [2020-10-16 01:01:30,487 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2020-10-16 01:01:30,487 INFO L342 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2020-10-16 01:01:30,487 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 173 flow [2020-10-16 01:01:30,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:01:30,488 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:30,488 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:30,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-16 01:01:30,488 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:01:30,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:30,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1095418705, now seen corresponding path program 1 times [2020-10-16 01:01:30,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:30,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796074491] [2020-10-16 01:01:30,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 01:01:30,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796074491] [2020-10-16 01:01:30,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:30,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:30,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388950388] [2020-10-16 01:01:30,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:30,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:30,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:30,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:30,503 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 164 [2020-10-16 01:01:30,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 173 flow. Second operand 3 states. [2020-10-16 01:01:30,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:30,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 164 [2020-10-16 01:01:30,504 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:31,123 INFO L129 PetriNetUnfolder]: 4904/7077 cut-off events. [2020-10-16 01:01:31,123 INFO L130 PetriNetUnfolder]: For 7935/23737 co-relation queries the response was YES. [2020-10-16 01:01:31,142 INFO L80 FinitePrefix]: Finished finitePrefix Result has 21288 conditions, 7077 events. 4904/7077 cut-off events. For 7935/23737 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 39477 event pairs, 1712 based on Foata normal form. 4/5513 useless extension candidates. Maximal degree in co-relation 21266. Up to 4999 conditions per place. [2020-10-16 01:01:31,182 INFO L132 encePairwiseOnDemand]: 157/164 looper letters, 32 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2020-10-16 01:01:31,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 56 transitions, 375 flow [2020-10-16 01:01:31,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:31,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:31,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2020-10-16 01:01:31,184 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.524390243902439 [2020-10-16 01:01:31,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2020-10-16 01:01:31,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2020-10-16 01:01:31,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:31,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2020-10-16 01:01:31,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:31,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:31,186 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:31,186 INFO L185 Difference]: Start difference. First operand has 40 places, 35 transitions, 173 flow. Second operand 3 states and 258 transitions. [2020-10-16 01:01:31,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 56 transitions, 375 flow [2020-10-16 01:01:31,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 56 transitions, 371 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:01:31,190 INFO L241 Difference]: Finished difference. Result has 43 places, 48 transitions, 345 flow [2020-10-16 01:01:31,190 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=43, PETRI_TRANSITIONS=48} [2020-10-16 01:01:31,190 INFO L342 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2020-10-16 01:01:31,190 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 48 transitions, 345 flow [2020-10-16 01:01:31,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:01:31,190 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:31,190 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:31,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-16 01:01:31,191 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:01:31,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:31,191 INFO L82 PathProgramCache]: Analyzing trace with hash 401760044, now seen corresponding path program 1 times [2020-10-16 01:01:31,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:31,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034380178] [2020-10-16 01:01:31,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 01:01:31,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034380178] [2020-10-16 01:01:31,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:31,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:01:31,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391339730] [2020-10-16 01:01:31,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:01:31,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:31,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:01:31,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:01:31,246 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 164 [2020-10-16 01:01:31,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 48 transitions, 345 flow. Second operand 4 states. [2020-10-16 01:01:31,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:31,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 164 [2020-10-16 01:01:31,246 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:31,638 INFO L129 PetriNetUnfolder]: 3910/5708 cut-off events. [2020-10-16 01:01:31,638 INFO L130 PetriNetUnfolder]: For 12333/47049 co-relation queries the response was YES. [2020-10-16 01:01:31,653 INFO L80 FinitePrefix]: Finished finitePrefix Result has 21427 conditions, 5708 events. 3910/5708 cut-off events. For 12333/47049 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 31941 event pairs, 713 based on Foata normal form. 389/5114 useless extension candidates. Maximal degree in co-relation 21404. Up to 4659 conditions per place. [2020-10-16 01:01:31,678 INFO L132 encePairwiseOnDemand]: 162/164 looper letters, 56 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2020-10-16 01:01:31,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 67 transitions, 585 flow [2020-10-16 01:01:31,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:31,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:31,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2020-10-16 01:01:31,680 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5203252032520326 [2020-10-16 01:01:31,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2020-10-16 01:01:31,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2020-10-16 01:01:31,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:31,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2020-10-16 01:01:31,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:31,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:31,683 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:31,683 INFO L185 Difference]: Start difference. First operand has 43 places, 48 transitions, 345 flow. Second operand 3 states and 256 transitions. [2020-10-16 01:01:31,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 67 transitions, 585 flow [2020-10-16 01:01:31,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 67 transitions, 551 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:01:31,695 INFO L241 Difference]: Finished difference. Result has 42 places, 47 transitions, 315 flow [2020-10-16 01:01:31,695 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=42, PETRI_TRANSITIONS=47} [2020-10-16 01:01:31,695 INFO L342 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2020-10-16 01:01:31,696 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 47 transitions, 315 flow [2020-10-16 01:01:31,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:01:31,696 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:31,696 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:31,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-16 01:01:31,696 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:01:31,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:31,697 INFO L82 PathProgramCache]: Analyzing trace with hash -596519610, now seen corresponding path program 1 times [2020-10-16 01:01:31,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:31,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764487605] [2020-10-16 01:01:31,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 01:01:31,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764487605] [2020-10-16 01:01:31,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:31,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:31,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309468080] [2020-10-16 01:01:31,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:31,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:31,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:31,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:31,718 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 164 [2020-10-16 01:01:31,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 47 transitions, 315 flow. Second operand 3 states. [2020-10-16 01:01:31,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:31,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 164 [2020-10-16 01:01:31,719 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:32,353 INFO L129 PetriNetUnfolder]: 5049/7540 cut-off events. [2020-10-16 01:01:32,354 INFO L130 PetriNetUnfolder]: For 14505/17248 co-relation queries the response was YES. [2020-10-16 01:01:32,372 INFO L80 FinitePrefix]: Finished finitePrefix Result has 27039 conditions, 7540 events. 5049/7540 cut-off events. For 14505/17248 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 44746 event pairs, 1447 based on Foata normal form. 21/6479 useless extension candidates. Maximal degree in co-relation 27016. Up to 5402 conditions per place. [2020-10-16 01:01:32,403 INFO L132 encePairwiseOnDemand]: 157/164 looper letters, 40 selfloop transitions, 29 changer transitions 0/76 dead transitions. [2020-10-16 01:01:32,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 76 transitions, 659 flow [2020-10-16 01:01:32,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:32,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:32,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2020-10-16 01:01:32,405 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5264227642276422 [2020-10-16 01:01:32,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2020-10-16 01:01:32,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2020-10-16 01:01:32,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:32,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2020-10-16 01:01:32,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:32,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:32,407 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:32,407 INFO L185 Difference]: Start difference. First operand has 42 places, 47 transitions, 315 flow. Second operand 3 states and 259 transitions. [2020-10-16 01:01:32,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 76 transitions, 659 flow [2020-10-16 01:01:32,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 76 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:01:32,410 INFO L241 Difference]: Finished difference. Result has 45 places, 68 transitions, 645 flow [2020-10-16 01:01:32,410 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=645, PETRI_PLACES=45, PETRI_TRANSITIONS=68} [2020-10-16 01:01:32,410 INFO L342 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2020-10-16 01:01:32,410 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 68 transitions, 645 flow [2020-10-16 01:01:32,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:01:32,410 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:32,410 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:32,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-16 01:01:32,411 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:01:32,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:32,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1312236415, now seen corresponding path program 1 times [2020-10-16 01:01:32,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:32,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002536499] [2020-10-16 01:01:32,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 01:01:32,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002536499] [2020-10-16 01:01:32,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:32,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:01:32,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965004606] [2020-10-16 01:01:32,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:01:32,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:32,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:01:32,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:01:32,449 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 164 [2020-10-16 01:01:32,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 68 transitions, 645 flow. Second operand 4 states. [2020-10-16 01:01:32,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:32,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 164 [2020-10-16 01:01:32,450 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:33,594 INFO L129 PetriNetUnfolder]: 4026/6096 cut-off events. [2020-10-16 01:01:33,594 INFO L130 PetriNetUnfolder]: For 18769/24860 co-relation queries the response was YES. [2020-10-16 01:01:33,607 INFO L80 FinitePrefix]: Finished finitePrefix Result has 26744 conditions, 6096 events. 4026/6096 cut-off events. For 18769/24860 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 35902 event pairs, 917 based on Foata normal form. 455/6005 useless extension candidates. Maximal degree in co-relation 26720. Up to 4825 conditions per place. [2020-10-16 01:01:33,633 INFO L132 encePairwiseOnDemand]: 162/164 looper letters, 79 selfloop transitions, 8 changer transitions 0/94 dead transitions. [2020-10-16 01:01:33,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 94 transitions, 1045 flow [2020-10-16 01:01:33,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:33,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:33,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2020-10-16 01:01:33,634 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5223577235772358 [2020-10-16 01:01:33,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2020-10-16 01:01:33,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2020-10-16 01:01:33,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:33,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2020-10-16 01:01:33,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:33,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:33,637 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:33,637 INFO L185 Difference]: Start difference. First operand has 45 places, 68 transitions, 645 flow. Second operand 3 states and 257 transitions. [2020-10-16 01:01:33,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 94 transitions, 1045 flow [2020-10-16 01:01:33,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 94 transitions, 987 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:01:33,653 INFO L241 Difference]: Finished difference. Result has 44 places, 67 transitions, 599 flow [2020-10-16 01:01:33,654 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=599, PETRI_PLACES=44, PETRI_TRANSITIONS=67} [2020-10-16 01:01:33,654 INFO L342 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2020-10-16 01:01:33,654 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 67 transitions, 599 flow [2020-10-16 01:01:33,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:01:33,654 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:33,654 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:33,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-16 01:01:33,655 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:01:33,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:33,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1514810044, now seen corresponding path program 1 times [2020-10-16 01:01:33,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:33,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390545672] [2020-10-16 01:01:33,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-16 01:01:33,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390545672] [2020-10-16 01:01:33,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:33,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:33,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865266437] [2020-10-16 01:01:33,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:33,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:33,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:33,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:33,677 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 164 [2020-10-16 01:01:33,678 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 67 transitions, 599 flow. Second operand 3 states. [2020-10-16 01:01:33,678 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:33,678 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 164 [2020-10-16 01:01:33,678 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:34,275 INFO L129 PetriNetUnfolder]: 5410/8351 cut-off events. [2020-10-16 01:01:34,275 INFO L130 PetriNetUnfolder]: For 23299/26752 co-relation queries the response was YES. [2020-10-16 01:01:34,301 INFO L80 FinitePrefix]: Finished finitePrefix Result has 35734 conditions, 8351 events. 5410/8351 cut-off events. For 23299/26752 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 54686 event pairs, 1586 based on Foata normal form. 40/7880 useless extension candidates. Maximal degree in co-relation 35710. Up to 6257 conditions per place. [2020-10-16 01:01:34,338 INFO L132 encePairwiseOnDemand]: 157/164 looper letters, 52 selfloop transitions, 49 changer transitions 0/108 dead transitions. [2020-10-16 01:01:34,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 108 transitions, 1195 flow [2020-10-16 01:01:34,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:34,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2020-10-16 01:01:34,340 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5101626016260162 [2020-10-16 01:01:34,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2020-10-16 01:01:34,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2020-10-16 01:01:34,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:34,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2020-10-16 01:01:34,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:34,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:34,342 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:34,342 INFO L185 Difference]: Start difference. First operand has 44 places, 67 transitions, 599 flow. Second operand 3 states and 251 transitions. [2020-10-16 01:01:34,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 108 transitions, 1195 flow [2020-10-16 01:01:34,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 108 transitions, 1179 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:01:34,353 INFO L241 Difference]: Finished difference. Result has 47 places, 100 transitions, 1209 flow [2020-10-16 01:01:34,353 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1209, PETRI_PLACES=47, PETRI_TRANSITIONS=100} [2020-10-16 01:01:34,353 INFO L342 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2020-10-16 01:01:34,353 INFO L481 AbstractCegarLoop]: Abstraction has has 47 places, 100 transitions, 1209 flow [2020-10-16 01:01:34,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:01:34,353 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:34,354 INFO L255 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:34,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-16 01:01:34,354 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:01:34,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:34,354 INFO L82 PathProgramCache]: Analyzing trace with hash -285687237, now seen corresponding path program 1 times [2020-10-16 01:01:34,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:34,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585422167] [2020-10-16 01:01:34,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:01:34,362 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:01:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:01:34,368 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:01:34,373 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:01:34,373 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:01:34,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-16 01:01:34,373 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:01:34,374 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-16 01:01:34,382 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,382 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,382 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,382 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,382 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,383 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,383 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,383 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,383 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,383 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,383 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,383 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,384 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,384 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,384 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,384 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,384 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,384 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,384 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,385 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,385 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,385 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,385 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,385 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,385 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,385 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,385 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,386 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,386 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,386 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,386 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,386 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,386 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,386 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,386 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,387 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,387 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,387 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,387 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,387 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,387 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,387 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,388 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,388 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,388 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,388 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,388 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,388 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,388 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,388 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,389 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,389 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,389 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,389 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,389 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,389 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,389 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,390 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,390 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,390 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,390 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,391 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,391 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,391 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,391 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,391 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,391 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,391 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,392 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,392 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,392 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,393 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,393 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,393 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,393 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,393 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,393 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,394 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,394 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,394 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,394 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,395 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,395 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,396 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,396 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,397 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,397 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,397 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,397 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,397 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,397 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,398 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,399 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,399 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,399 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,399 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,399 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,400 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,400 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,400 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,400 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,401 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,402 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,402 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,402 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:01:34,403 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 01:01:34,403 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:01:34,403 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:01:34,404 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:01:34,404 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:01:34,404 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:01:34,404 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:01:34,404 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:01:34,404 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:01:34,405 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 104 places, 98 transitions, 256 flow [2020-10-16 01:01:34,416 INFO L129 PetriNetUnfolder]: 13/151 cut-off events. [2020-10-16 01:01:34,416 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-16 01:01:34,417 INFO L80 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 151 events. 13/151 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 434 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2020-10-16 01:01:34,417 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 98 transitions, 256 flow [2020-10-16 01:01:34,417 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 98 transitions, 256 flow [2020-10-16 01:01:34,417 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:01:34,418 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 98 transitions, 256 flow [2020-10-16 01:01:34,418 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 98 transitions, 256 flow [2020-10-16 01:01:34,418 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 104 places, 98 transitions, 256 flow [2020-10-16 01:01:34,429 INFO L129 PetriNetUnfolder]: 13/151 cut-off events. [2020-10-16 01:01:34,430 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-16 01:01:34,431 INFO L80 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 151 events. 13/151 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 417 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2020-10-16 01:01:34,437 INFO L117 LiptonReduction]: Number of co-enabled transitions 6120 [2020-10-16 01:01:35,746 INFO L132 LiptonReduction]: Checked pairs total: 12707 [2020-10-16 01:01:35,747 INFO L134 LiptonReduction]: Total number of compositions: 92 [2020-10-16 01:01:35,747 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1330 [2020-10-16 01:01:35,748 INFO L129 PetriNetUnfolder]: 1/9 cut-off events. [2020-10-16 01:01:35,748 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-16 01:01:35,748 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:35,748 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 01:01:35,749 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 01:01:35,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:35,749 INFO L82 PathProgramCache]: Analyzing trace with hash 862156483, now seen corresponding path program 1 times [2020-10-16 01:01:35,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:35,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350469212] [2020-10-16 01:01:35,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:01:35,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350469212] [2020-10-16 01:01:35,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:35,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:35,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049552236] [2020-10-16 01:01:35,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:35,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:35,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:35,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:35,763 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 190 [2020-10-16 01:01:35,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 126 flow. Second operand 3 states. [2020-10-16 01:01:35,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:35,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 190 [2020-10-16 01:01:35,763 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:37,687 INFO L129 PetriNetUnfolder]: 20979/27140 cut-off events. [2020-10-16 01:01:37,687 INFO L130 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2020-10-16 01:01:37,826 INFO L80 FinitePrefix]: Finished finitePrefix Result has 54302 conditions, 27140 events. 20979/27140 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 1355. Compared 145692 event pairs, 11950 based on Foata normal form. 6152/24234 useless extension candidates. Maximal degree in co-relation 54240. Up to 18931 conditions per place. [2020-10-16 01:01:37,980 INFO L132 encePairwiseOnDemand]: 177/190 looper letters, 29 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2020-10-16 01:01:37,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 220 flow [2020-10-16 01:01:37,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:37,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:37,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2020-10-16 01:01:37,982 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5596491228070175 [2020-10-16 01:01:37,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2020-10-16 01:01:37,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2020-10-16 01:01:37,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:37,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2020-10-16 01:01:37,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:37,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:37,988 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:37,989 INFO L185 Difference]: Start difference. First operand has 42 places, 33 transitions, 126 flow. Second operand 3 states and 319 transitions. [2020-10-16 01:01:37,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 220 flow [2020-10-16 01:01:37,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 190 flow, removed 15 selfloop flow, removed 0 redundant places. [2020-10-16 01:01:37,990 INFO L241 Difference]: Finished difference. Result has 45 places, 34 transitions, 140 flow [2020-10-16 01:01:37,990 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2020-10-16 01:01:37,991 INFO L342 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2020-10-16 01:01:37,991 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 140 flow [2020-10-16 01:01:37,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:01:37,991 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:37,991 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:37,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-16 01:01:37,991 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 01:01:37,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:37,992 INFO L82 PathProgramCache]: Analyzing trace with hash 422134040, now seen corresponding path program 1 times [2020-10-16 01:01:37,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:37,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949655976] [2020-10-16 01:01:37,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:38,017 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 01:01:38,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949655976] [2020-10-16 01:01:38,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:38,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:38,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942050678] [2020-10-16 01:01:38,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:38,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:38,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:38,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:38,019 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 190 [2020-10-16 01:01:38,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 140 flow. Second operand 3 states. [2020-10-16 01:01:38,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:38,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 190 [2020-10-16 01:01:38,020 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:40,790 INFO L129 PetriNetUnfolder]: 29632/38599 cut-off events. [2020-10-16 01:01:40,790 INFO L130 PetriNetUnfolder]: For 24432/74484 co-relation queries the response was YES. [2020-10-16 01:01:40,934 INFO L80 FinitePrefix]: Finished finitePrefix Result has 99919 conditions, 38599 events. 29632/38599 cut-off events. For 24432/74484 co-relation queries the response was YES. Maximal size of possible extension queue 1829. Compared 214156 event pairs, 13681 based on Foata normal form. 1/27650 useless extension candidates. Maximal degree in co-relation 99879. Up to 27324 conditions per place. [2020-10-16 01:01:41,114 INFO L132 encePairwiseOnDemand]: 182/190 looper letters, 35 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2020-10-16 01:01:41,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 312 flow [2020-10-16 01:01:41,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:41,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:41,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2020-10-16 01:01:41,116 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2020-10-16 01:01:41,116 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2020-10-16 01:01:41,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2020-10-16 01:01:41,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:41,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2020-10-16 01:01:41,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:41,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:41,119 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:41,119 INFO L185 Difference]: Start difference. First operand has 45 places, 34 transitions, 140 flow. Second operand 3 states and 310 transitions. [2020-10-16 01:01:41,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 312 flow [2020-10-16 01:01:41,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:01:41,290 INFO L241 Difference]: Finished difference. Result has 47 places, 44 transitions, 234 flow [2020-10-16 01:01:41,291 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2020-10-16 01:01:41,291 INFO L342 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2020-10-16 01:01:41,291 INFO L481 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 234 flow [2020-10-16 01:01:41,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:01:41,291 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:41,291 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:41,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-16 01:01:41,292 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 01:01:41,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:41,292 INFO L82 PathProgramCache]: Analyzing trace with hash 201261302, now seen corresponding path program 1 times [2020-10-16 01:01:41,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:41,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501199651] [2020-10-16 01:01:41,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:41,314 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 01:01:41,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501199651] [2020-10-16 01:01:41,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:41,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:01:41,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496548866] [2020-10-16 01:01:41,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:01:41,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:41,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:01:41,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:01:41,316 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 190 [2020-10-16 01:01:41,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 234 flow. Second operand 4 states. [2020-10-16 01:01:41,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:41,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 190 [2020-10-16 01:01:41,317 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:44,285 INFO L129 PetriNetUnfolder]: 24017/31450 cut-off events. [2020-10-16 01:01:44,285 INFO L130 PetriNetUnfolder]: For 31241/171318 co-relation queries the response was YES. [2020-10-16 01:01:44,427 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95053 conditions, 31450 events. 24017/31450 cut-off events. For 31241/171318 co-relation queries the response was YES. Maximal size of possible extension queue 1472. Compared 179950 event pairs, 4584 based on Foata normal form. 12/23642 useless extension candidates. Maximal degree in co-relation 95029. Up to 25811 conditions per place. [2020-10-16 01:01:44,590 INFO L132 encePairwiseOnDemand]: 188/190 looper letters, 53 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2020-10-16 01:01:44,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 63 transitions, 434 flow [2020-10-16 01:01:44,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:44,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:44,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2020-10-16 01:01:44,592 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5403508771929825 [2020-10-16 01:01:44,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2020-10-16 01:01:44,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2020-10-16 01:01:44,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:44,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2020-10-16 01:01:44,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:44,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:44,594 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:44,595 INFO L185 Difference]: Start difference. First operand has 47 places, 44 transitions, 234 flow. Second operand 3 states and 308 transitions. [2020-10-16 01:01:44,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 63 transitions, 434 flow [2020-10-16 01:01:44,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 398 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:01:44,843 INFO L241 Difference]: Finished difference. Result has 46 places, 43 transitions, 210 flow [2020-10-16 01:01:44,843 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2020-10-16 01:01:44,843 INFO L342 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2020-10-16 01:01:44,843 INFO L481 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 210 flow [2020-10-16 01:01:44,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:01:44,843 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:44,843 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:44,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-16 01:01:44,844 INFO L429 AbstractCegarLoop]: === Iteration 4 === [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 01:01:44,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:44,844 INFO L82 PathProgramCache]: Analyzing trace with hash 201256629, now seen corresponding path program 1 times [2020-10-16 01:01:44,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:44,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836465737] [2020-10-16 01:01:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:44,868 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 01:01:44,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836465737] [2020-10-16 01:01:44,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:44,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:01:44,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442068011] [2020-10-16 01:01:44,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:01:44,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:44,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:01:44,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:01:44,872 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 190 [2020-10-16 01:01:44,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 210 flow. Second operand 4 states. [2020-10-16 01:01:44,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:44,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 190 [2020-10-16 01:01:44,873 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:46,728 INFO L129 PetriNetUnfolder]: 19425/25583 cut-off events. [2020-10-16 01:01:46,728 INFO L130 PetriNetUnfolder]: For 21586/119468 co-relation queries the response was YES. [2020-10-16 01:01:46,843 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74402 conditions, 25583 events. 19425/25583 cut-off events. For 21586/119468 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 139051 event pairs, 5213 based on Foata normal form. 10/19103 useless extension candidates. Maximal degree in co-relation 74360. Up to 20959 conditions per place. [2020-10-16 01:01:46,976 INFO L132 encePairwiseOnDemand]: 188/190 looper letters, 51 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2020-10-16 01:01:46,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 61 transitions, 392 flow [2020-10-16 01:01:46,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:46,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:46,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2020-10-16 01:01:46,977 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5368421052631579 [2020-10-16 01:01:46,978 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2020-10-16 01:01:46,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2020-10-16 01:01:46,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:46,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2020-10-16 01:01:46,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:46,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:46,980 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:46,980 INFO L185 Difference]: Start difference. First operand has 46 places, 43 transitions, 210 flow. Second operand 3 states and 306 transitions. [2020-10-16 01:01:46,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 61 transitions, 392 flow [2020-10-16 01:01:46,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:01:46,989 INFO L241 Difference]: Finished difference. Result has 46 places, 42 transitions, 208 flow [2020-10-16 01:01:46,990 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2020-10-16 01:01:46,990 INFO L342 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2020-10-16 01:01:46,990 INFO L481 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 208 flow [2020-10-16 01:01:46,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:01:46,990 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:46,990 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:46,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-16 01:01:46,991 INFO L429 AbstractCegarLoop]: === Iteration 5 === [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 01:01:46,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:46,991 INFO L82 PathProgramCache]: Analyzing trace with hash -40974610, now seen corresponding path program 1 times [2020-10-16 01:01:46,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:46,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740283382] [2020-10-16 01:01:46,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:47,009 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 01:01:47,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740283382] [2020-10-16 01:01:47,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:47,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:47,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756333544] [2020-10-16 01:01:47,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:47,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:47,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:47,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:47,012 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 190 [2020-10-16 01:01:47,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 208 flow. Second operand 3 states. [2020-10-16 01:01:47,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:47,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 190 [2020-10-16 01:01:47,012 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:49,499 INFO L129 PetriNetUnfolder]: 26373/35077 cut-off events. [2020-10-16 01:01:49,499 INFO L130 PetriNetUnfolder]: For 39566/163920 co-relation queries the response was YES. [2020-10-16 01:01:49,664 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103459 conditions, 35077 events. 26373/35077 cut-off events. For 39566/163920 co-relation queries the response was YES. Maximal size of possible extension queue 1641. Compared 199203 event pairs, 10352 based on Foata normal form. 4/26616 useless extension candidates. Maximal degree in co-relation 103436. Up to 25476 conditions per place. [2020-10-16 01:01:49,845 INFO L132 encePairwiseOnDemand]: 182/190 looper letters, 40 selfloop transitions, 21 changer transitions 0/69 dead transitions. [2020-10-16 01:01:49,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 69 transitions, 462 flow [2020-10-16 01:01:49,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:49,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:49,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2020-10-16 01:01:49,847 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.531578947368421 [2020-10-16 01:01:49,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2020-10-16 01:01:49,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2020-10-16 01:01:49,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:49,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2020-10-16 01:01:49,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:49,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:49,849 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:49,850 INFO L185 Difference]: Start difference. First operand has 46 places, 42 transitions, 208 flow. Second operand 3 states and 303 transitions. [2020-10-16 01:01:49,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 69 transitions, 462 flow [2020-10-16 01:01:49,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:01:49,860 INFO L241 Difference]: Finished difference. Result has 49 places, 59 transitions, 428 flow [2020-10-16 01:01:49,861 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=49, PETRI_TRANSITIONS=59} [2020-10-16 01:01:49,861 INFO L342 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2020-10-16 01:01:49,861 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 59 transitions, 428 flow [2020-10-16 01:01:49,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:01:49,861 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:49,861 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:49,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-16 01:01:49,862 INFO L429 AbstractCegarLoop]: === Iteration 6 === [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 01:01:49,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:49,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1270210083, now seen corresponding path program 1 times [2020-10-16 01:01:49,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:49,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414485508] [2020-10-16 01:01:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 01:01:49,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414485508] [2020-10-16 01:01:49,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:49,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:01:49,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239118662] [2020-10-16 01:01:49,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:01:49,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:49,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:01:49,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:01:49,889 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 190 [2020-10-16 01:01:49,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 59 transitions, 428 flow. Second operand 4 states. [2020-10-16 01:01:49,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:49,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 190 [2020-10-16 01:01:49,889 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:51,946 INFO L129 PetriNetUnfolder]: 21164/28341 cut-off events. [2020-10-16 01:01:51,946 INFO L130 PetriNetUnfolder]: For 57405/341787 co-relation queries the response was YES. [2020-10-16 01:01:52,099 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103256 conditions, 28341 events. 21164/28341 cut-off events. For 57405/341787 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 162862 event pairs, 3717 based on Foata normal form. 1545/24159 useless extension candidates. Maximal degree in co-relation 103232. Up to 23073 conditions per place. [2020-10-16 01:01:52,253 INFO L132 encePairwiseOnDemand]: 188/190 looper letters, 72 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2020-10-16 01:01:52,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 84 transitions, 736 flow [2020-10-16 01:01:52,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:52,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2020-10-16 01:01:52,255 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5280701754385965 [2020-10-16 01:01:52,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2020-10-16 01:01:52,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2020-10-16 01:01:52,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:52,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2020-10-16 01:01:52,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:52,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:52,258 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:52,258 INFO L185 Difference]: Start difference. First operand has 49 places, 59 transitions, 428 flow. Second operand 3 states and 301 transitions. [2020-10-16 01:01:52,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 84 transitions, 736 flow [2020-10-16 01:01:52,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 84 transitions, 694 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:01:52,332 INFO L241 Difference]: Finished difference. Result has 48 places, 58 transitions, 390 flow [2020-10-16 01:01:52,332 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=390, PETRI_PLACES=48, PETRI_TRANSITIONS=58} [2020-10-16 01:01:52,332 INFO L342 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2020-10-16 01:01:52,333 INFO L481 AbstractCegarLoop]: Abstraction has has 48 places, 58 transitions, 390 flow [2020-10-16 01:01:52,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:01:52,333 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:52,333 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:52,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-16 01:01:52,333 INFO L429 AbstractCegarLoop]: === Iteration 7 === [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 01:01:52,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:52,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1064251902, now seen corresponding path program 1 times [2020-10-16 01:01:52,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:52,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329104429] [2020-10-16 01:01:52,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 01:01:52,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329104429] [2020-10-16 01:01:52,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:52,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:52,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127318133] [2020-10-16 01:01:52,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:52,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:52,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:52,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:52,354 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 190 [2020-10-16 01:01:52,355 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 58 transitions, 390 flow. Second operand 3 states. [2020-10-16 01:01:52,355 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:52,355 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 190 [2020-10-16 01:01:52,355 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:55,183 INFO L129 PetriNetUnfolder]: 28030/38012 cut-off events. [2020-10-16 01:01:55,185 INFO L130 PetriNetUnfolder]: For 80534/368045 co-relation queries the response was YES. [2020-10-16 01:01:55,381 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132159 conditions, 38012 events. 28030/38012 cut-off events. For 80534/368045 co-relation queries the response was YES. Maximal size of possible extension queue 1841. Compared 226357 event pairs, 9219 based on Foata normal form. 22/30948 useless extension candidates. Maximal degree in co-relation 132135. Up to 27935 conditions per place. [2020-10-16 01:01:55,589 INFO L132 encePairwiseOnDemand]: 182/190 looper letters, 52 selfloop transitions, 37 changer transitions 0/97 dead transitions. [2020-10-16 01:01:55,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 97 transitions, 842 flow [2020-10-16 01:01:55,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:55,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:55,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2020-10-16 01:01:55,591 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5280701754385965 [2020-10-16 01:01:55,591 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2020-10-16 01:01:55,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2020-10-16 01:01:55,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:55,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2020-10-16 01:01:55,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:55,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:55,594 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:55,594 INFO L185 Difference]: Start difference. First operand has 48 places, 58 transitions, 390 flow. Second operand 3 states and 301 transitions. [2020-10-16 01:01:55,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 97 transitions, 842 flow [2020-10-16 01:01:55,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 97 transitions, 834 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:01:55,602 INFO L241 Difference]: Finished difference. Result has 51 places, 87 transitions, 832 flow [2020-10-16 01:01:55,602 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=832, PETRI_PLACES=51, PETRI_TRANSITIONS=87} [2020-10-16 01:01:55,603 INFO L342 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2020-10-16 01:01:55,603 INFO L481 AbstractCegarLoop]: Abstraction has has 51 places, 87 transitions, 832 flow [2020-10-16 01:01:55,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:01:55,603 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:55,603 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:55,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-16 01:01:55,603 INFO L429 AbstractCegarLoop]: === Iteration 8 === [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 01:01:55,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:55,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1367932005, now seen corresponding path program 1 times [2020-10-16 01:01:55,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:55,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679716286] [2020-10-16 01:01:55,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:55,628 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 01:01:55,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679716286] [2020-10-16 01:01:55,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:55,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:01:55,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796404042] [2020-10-16 01:01:55,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:01:55,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:55,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:01:55,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:01:55,631 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 190 [2020-10-16 01:01:55,631 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 87 transitions, 832 flow. Second operand 4 states. [2020-10-16 01:01:55,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:55,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 190 [2020-10-16 01:01:55,632 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:01:57,972 INFO L129 PetriNetUnfolder]: 22378/30595 cut-off events. [2020-10-16 01:01:57,972 INFO L130 PetriNetUnfolder]: For 100544/660583 co-relation queries the response was YES. [2020-10-16 01:01:58,134 INFO L80 FinitePrefix]: Finished finitePrefix Result has 129103 conditions, 30595 events. 22378/30595 cut-off events. For 100544/660583 co-relation queries the response was YES. Maximal size of possible extension queue 1452. Compared 182209 event pairs, 4370 based on Foata normal form. 1809/28022 useless extension candidates. Maximal degree in co-relation 129078. Up to 24691 conditions per place. [2020-10-16 01:01:58,307 INFO L132 encePairwiseOnDemand]: 188/190 looper letters, 108 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2020-10-16 01:01:58,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 124 transitions, 1384 flow [2020-10-16 01:01:58,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:01:58,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:01:58,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2020-10-16 01:01:58,309 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5245614035087719 [2020-10-16 01:01:58,309 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2020-10-16 01:01:58,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2020-10-16 01:01:58,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:01:58,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2020-10-16 01:01:58,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:01:58,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:01:58,313 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:01:58,313 INFO L185 Difference]: Start difference. First operand has 51 places, 87 transitions, 832 flow. Second operand 3 states and 299 transitions. [2020-10-16 01:01:58,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 124 transitions, 1384 flow [2020-10-16 01:01:58,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 124 transitions, 1310 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:01:58,418 INFO L241 Difference]: Finished difference. Result has 50 places, 86 transitions, 770 flow [2020-10-16 01:01:58,418 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=770, PETRI_PLACES=50, PETRI_TRANSITIONS=86} [2020-10-16 01:01:58,418 INFO L342 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2020-10-16 01:01:58,418 INFO L481 AbstractCegarLoop]: Abstraction has has 50 places, 86 transitions, 770 flow [2020-10-16 01:01:58,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:01:58,418 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:01:58,418 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:01:58,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-16 01:01:58,419 INFO L429 AbstractCegarLoop]: === Iteration 9 === [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 01:01:58,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:01:58,419 INFO L82 PathProgramCache]: Analyzing trace with hash 152749525, now seen corresponding path program 1 times [2020-10-16 01:01:58,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:01:58,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732165227] [2020-10-16 01:01:58,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:01:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:01:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-16 01:01:58,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732165227] [2020-10-16 01:01:58,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:01:58,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:01:58,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735802144] [2020-10-16 01:01:58,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:01:58,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:01:58,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:01:58,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:01:58,439 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 190 [2020-10-16 01:01:58,440 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 86 transitions, 770 flow. Second operand 3 states. [2020-10-16 01:01:58,440 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:01:58,440 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 190 [2020-10-16 01:01:58,440 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:02:01,792 INFO L129 PetriNetUnfolder]: 29279/40671 cut-off events. [2020-10-16 01:02:01,792 INFO L130 PetriNetUnfolder]: For 130521/143127 co-relation queries the response was YES. [2020-10-16 01:02:02,001 INFO L80 FinitePrefix]: Finished finitePrefix Result has 165259 conditions, 40671 events. 29279/40671 cut-off events. For 130521/143127 co-relation queries the response was YES. Maximal size of possible extension queue 2042. Compared 257000 event pairs, 8232 based on Foata normal form. 66/35849 useless extension candidates. Maximal degree in co-relation 165234. Up to 30318 conditions per place. [2020-10-16 01:02:02,225 INFO L132 encePairwiseOnDemand]: 182/190 looper letters, 72 selfloop transitions, 65 changer transitions 0/145 dead transitions. [2020-10-16 01:02:02,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 145 transitions, 1602 flow [2020-10-16 01:02:02,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:02:02,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:02:02,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2020-10-16 01:02:02,227 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5245614035087719 [2020-10-16 01:02:02,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2020-10-16 01:02:02,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2020-10-16 01:02:02,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:02:02,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2020-10-16 01:02:02,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:02:02,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:02:02,230 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:02:02,230 INFO L185 Difference]: Start difference. First operand has 50 places, 86 transitions, 770 flow. Second operand 3 states and 299 transitions. [2020-10-16 01:02:02,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 145 transitions, 1602 flow [2020-10-16 01:02:02,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 145 transitions, 1586 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:02:02,243 INFO L241 Difference]: Finished difference. Result has 53 places, 135 transitions, 1636 flow [2020-10-16 01:02:02,243 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1636, PETRI_PLACES=53, PETRI_TRANSITIONS=135} [2020-10-16 01:02:02,243 INFO L342 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2020-10-16 01:02:02,243 INFO L481 AbstractCegarLoop]: Abstraction has has 53 places, 135 transitions, 1636 flow [2020-10-16 01:02:02,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:02:02,244 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:02,244 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:02:02,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-16 01:02:02,244 INFO L429 AbstractCegarLoop]: === Iteration 10 === [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 01:02:02,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:02,244 INFO L82 PathProgramCache]: Analyzing trace with hash 440270351, now seen corresponding path program 1 times [2020-10-16 01:02:02,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:02,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602491053] [2020-10-16 01:02:02,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:02:02,287 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-16 01:02:02,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602491053] [2020-10-16 01:02:02,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:02:02,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:02:02,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895706869] [2020-10-16 01:02:02,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:02:02,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:02:02,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:02:02,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:02:02,291 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 190 [2020-10-16 01:02:02,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 135 transitions, 1636 flow. Second operand 4 states. [2020-10-16 01:02:02,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:02:02,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 190 [2020-10-16 01:02:02,292 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:02:05,778 INFO L129 PetriNetUnfolder]: 23432/32857 cut-off events. [2020-10-16 01:02:05,778 INFO L130 PetriNetUnfolder]: For 150039/172792 co-relation queries the response was YES. [2020-10-16 01:02:05,960 INFO L80 FinitePrefix]: Finished finitePrefix Result has 159536 conditions, 32857 events. 23432/32857 cut-off events. For 150039/172792 co-relation queries the response was YES. Maximal size of possible extension queue 1621. Compared 207744 event pairs, 5734 based on Foata normal form. 2061/32513 useless extension candidates. Maximal degree in co-relation 159510. Up to 25613 conditions per place. [2020-10-16 01:02:06,140 INFO L132 encePairwiseOnDemand]: 188/190 looper letters, 167 selfloop transitions, 16 changer transitions 0/191 dead transitions. [2020-10-16 01:02:06,140 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 191 transitions, 2630 flow [2020-10-16 01:02:06,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:02:06,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:02:06,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2020-10-16 01:02:06,142 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5210526315789473 [2020-10-16 01:02:06,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2020-10-16 01:02:06,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2020-10-16 01:02:06,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:02:06,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2020-10-16 01:02:06,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:02:06,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:02:06,144 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:02:06,144 INFO L185 Difference]: Start difference. First operand has 53 places, 135 transitions, 1636 flow. Second operand 3 states and 297 transitions. [2020-10-16 01:02:06,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 191 transitions, 2630 flow [2020-10-16 01:02:06,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 191 transitions, 2500 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:02:06,343 INFO L241 Difference]: Finished difference. Result has 52 places, 134 transitions, 1534 flow [2020-10-16 01:02:06,343 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1534, PETRI_PLACES=52, PETRI_TRANSITIONS=134} [2020-10-16 01:02:06,343 INFO L342 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2020-10-16 01:02:06,344 INFO L481 AbstractCegarLoop]: Abstraction has has 52 places, 134 transitions, 1534 flow [2020-10-16 01:02:06,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:02:06,344 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:06,344 INFO L255 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:02:06,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-16 01:02:06,344 INFO L429 AbstractCegarLoop]: === Iteration 11 === [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 01:02:06,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:06,344 INFO L82 PathProgramCache]: Analyzing trace with hash 2026385382, now seen corresponding path program 1 times [2020-10-16 01:02:06,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:06,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502580810] [2020-10-16 01:02:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:02:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-16 01:02:06,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502580810] [2020-10-16 01:02:06,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:02:06,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:02:06,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684327528] [2020-10-16 01:02:06,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:02:06,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:02:06,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:02:06,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:02:06,386 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 190 [2020-10-16 01:02:06,387 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 134 transitions, 1534 flow. Second operand 3 states. [2020-10-16 01:02:06,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:02:06,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 190 [2020-10-16 01:02:06,387 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:02:11,302 INFO L129 PetriNetUnfolder]: 32556/46210 cut-off events. [2020-10-16 01:02:11,302 INFO L130 PetriNetUnfolder]: For 199487/271733 co-relation queries the response was YES. [2020-10-16 01:02:11,541 INFO L80 FinitePrefix]: Finished finitePrefix Result has 218971 conditions, 46210 events. 32556/46210 cut-off events. For 199487/271733 co-relation queries the response was YES. Maximal size of possible extension queue 2839. Compared 320097 event pairs, 9195 based on Foata normal form. 103/43973 useless extension candidates. Maximal degree in co-relation 218945. Up to 35925 conditions per place. [2020-10-16 01:02:11,782 INFO L132 encePairwiseOnDemand]: 182/190 looper letters, 104 selfloop transitions, 113 changer transitions 0/225 dead transitions. [2020-10-16 01:02:11,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 225 transitions, 3066 flow [2020-10-16 01:02:11,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:02:11,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:02:11,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2020-10-16 01:02:11,784 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2020-10-16 01:02:11,784 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2020-10-16 01:02:11,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2020-10-16 01:02:11,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:02:11,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2020-10-16 01:02:11,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:02:11,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:02:11,787 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:02:11,787 INFO L185 Difference]: Start difference. First operand has 52 places, 134 transitions, 1534 flow. Second operand 3 states and 294 transitions. [2020-10-16 01:02:11,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 225 transitions, 3066 flow [2020-10-16 01:02:11,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 225 transitions, 3034 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:02:11,825 INFO L241 Difference]: Finished difference. Result has 55 places, 215 transitions, 3176 flow [2020-10-16 01:02:11,825 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3176, PETRI_PLACES=55, PETRI_TRANSITIONS=215} [2020-10-16 01:02:11,827 INFO L342 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2020-10-16 01:02:11,827 INFO L481 AbstractCegarLoop]: Abstraction has has 55 places, 215 transitions, 3176 flow [2020-10-16 01:02:11,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:02:11,827 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:11,827 INFO L255 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:02:11,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-16 01:02:11,827 INFO L429 AbstractCegarLoop]: === Iteration 12 === [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 01:02:11,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:11,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1606739912, now seen corresponding path program 1 times [2020-10-16 01:02:11,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:11,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994436001] [2020-10-16 01:02:11,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:02:11,839 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:02:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:02:11,853 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:02:11,858 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:02:11,858 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:02:11,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-16 01:02:11,859 WARN L371 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:02:11,859 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-16 01:02:11,871 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,871 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,871 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,871 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,872 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,872 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,872 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,872 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,872 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,872 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,872 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,873 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,873 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,873 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,873 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,873 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,873 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,874 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,874 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,874 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,874 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,874 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,874 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,874 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,875 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,875 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,875 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,876 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,876 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,876 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,876 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,876 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,877 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,877 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,877 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,877 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,877 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,877 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,877 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,878 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,878 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,878 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,878 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,878 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,879 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,879 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,879 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,879 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,879 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,879 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,879 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,880 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,880 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,880 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,880 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,880 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,881 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,881 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,882 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,882 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,882 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,882 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,882 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,883 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,883 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,883 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,883 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,883 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,883 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,883 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,884 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,884 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,884 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,884 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,884 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,884 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,884 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,885 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,885 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,891 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,891 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,892 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,892 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,892 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,892 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,893 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,893 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,893 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,893 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,894 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,894 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,895 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,895 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,895 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,895 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,895 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,895 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,897 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,897 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,897 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,897 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,897 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,897 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,898 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,898 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,899 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,899 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:11,900 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-16 01:02:11,900 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:02:11,900 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:02:11,900 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:02:11,900 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:02:11,901 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:02:11,901 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:02:11,901 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:02:11,901 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:02:11,902 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 111 transitions, 299 flow [2020-10-16 01:02:11,917 INFO L129 PetriNetUnfolder]: 15/173 cut-off events. [2020-10-16 01:02:11,917 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-16 01:02:11,919 INFO L80 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 173 events. 15/173 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 517 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 182. Up to 16 conditions per place. [2020-10-16 01:02:11,919 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 111 transitions, 299 flow [2020-10-16 01:02:11,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 111 transitions, 299 flow [2020-10-16 01:02:11,921 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:02:11,921 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 111 transitions, 299 flow [2020-10-16 01:02:11,921 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 111 transitions, 299 flow [2020-10-16 01:02:11,921 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 111 transitions, 299 flow [2020-10-16 01:02:11,933 INFO L129 PetriNetUnfolder]: 15/173 cut-off events. [2020-10-16 01:02:11,933 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-16 01:02:11,935 INFO L80 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 173 events. 15/173 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 509 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 182. Up to 16 conditions per place. [2020-10-16 01:02:11,941 INFO L117 LiptonReduction]: Number of co-enabled transitions 8232 [2020-10-16 01:02:13,239 INFO L132 LiptonReduction]: Checked pairs total: 15392 [2020-10-16 01:02:13,240 INFO L134 LiptonReduction]: Total number of compositions: 102 [2020-10-16 01:02:13,240 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1319 [2020-10-16 01:02:13,241 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2020-10-16 01:02:13,241 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-16 01:02:13,241 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:13,241 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 01:02:13,241 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 01:02:13,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:13,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1079248743, now seen corresponding path program 1 times [2020-10-16 01:02:13,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:13,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335833071] [2020-10-16 01:02:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:02:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:02:13,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335833071] [2020-10-16 01:02:13,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:02:13,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:02:13,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112047980] [2020-10-16 01:02:13,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:02:13,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:02:13,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:02:13,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:02:13,257 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 213 [2020-10-16 01:02:13,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 145 flow. Second operand 3 states. [2020-10-16 01:02:13,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:02:13,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 213 [2020-10-16 01:02:13,258 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:02:26,522 INFO L129 PetriNetUnfolder]: 102384/126980 cut-off events. [2020-10-16 01:02:26,522 INFO L130 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2020-10-16 01:02:27,253 INFO L80 FinitePrefix]: Finished finitePrefix Result has 253989 conditions, 126980 events. 102384/126980 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 5174. Compared 696938 event pairs, 60078 based on Foata normal form. 24586/109601 useless extension candidates. Maximal degree in co-relation 253914. Up to 90096 conditions per place. [2020-10-16 01:02:27,878 INFO L132 encePairwiseOnDemand]: 202/213 looper letters, 34 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2020-10-16 01:02:27,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 263 flow [2020-10-16 01:02:27,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:02:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:02:27,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 338 transitions. [2020-10-16 01:02:27,880 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5289514866979655 [2020-10-16 01:02:27,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 338 transitions. [2020-10-16 01:02:27,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 338 transitions. [2020-10-16 01:02:27,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:02:27,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 338 transitions. [2020-10-16 01:02:27,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:02:27,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:02:27,882 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:02:27,882 INFO L185 Difference]: Start difference. First operand has 48 places, 34 transitions, 145 flow. Second operand 3 states and 338 transitions. [2020-10-16 01:02:27,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 263 flow [2020-10-16 01:02:27,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 51 transitions, 221 flow, removed 21 selfloop flow, removed 0 redundant places. [2020-10-16 01:02:27,884 INFO L241 Difference]: Finished difference. Result has 51 places, 39 transitions, 161 flow [2020-10-16 01:02:27,885 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2020-10-16 01:02:27,885 INFO L342 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2020-10-16 01:02:27,885 INFO L481 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 161 flow [2020-10-16 01:02:27,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:02:27,885 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:27,885 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 01:02:27,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-16 01:02:27,886 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 01:02:27,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:27,886 INFO L82 PathProgramCache]: Analyzing trace with hash -423468189, now seen corresponding path program 1 times [2020-10-16 01:02:27,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:27,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165982928] [2020-10-16 01:02:27,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:02:27,903 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 01:02:27,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165982928] [2020-10-16 01:02:27,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:02:27,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:02:27,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30878872] [2020-10-16 01:02:27,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:02:27,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:02:27,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:02:27,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:02:27,905 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 213 [2020-10-16 01:02:27,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 161 flow. Second operand 3 states. [2020-10-16 01:02:27,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:02:27,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 213 [2020-10-16 01:02:27,906 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:02:47,496 INFO L129 PetriNetUnfolder]: 145585/181435 cut-off events. [2020-10-16 01:02:47,497 INFO L130 PetriNetUnfolder]: For 108375/438332 co-relation queries the response was YES. [2020-10-16 01:02:48,414 INFO L80 FinitePrefix]: Finished finitePrefix Result has 465705 conditions, 181435 events. 145585/181435 cut-off events. For 108375/438332 co-relation queries the response was YES. Maximal size of possible extension queue 6931. Compared 1028785 event pairs, 71028 based on Foata normal form. 1/129140 useless extension candidates. Maximal degree in co-relation 465664. Up to 130733 conditions per place. [2020-10-16 01:02:58,103 INFO L132 encePairwiseOnDemand]: 204/213 looper letters, 41 selfloop transitions, 14 changer transitions 0/64 dead transitions. [2020-10-16 01:02:58,103 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 64 transitions, 363 flow [2020-10-16 01:02:58,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:02:58,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:02:58,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2020-10-16 01:02:58,104 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5273865414710485 [2020-10-16 01:02:58,105 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2020-10-16 01:02:58,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2020-10-16 01:02:58,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:02:58,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2020-10-16 01:02:58,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:02:58,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:02:58,106 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:02:58,106 INFO L185 Difference]: Start difference. First operand has 51 places, 39 transitions, 161 flow. Second operand 3 states and 337 transitions. [2020-10-16 01:02:58,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 64 transitions, 363 flow [2020-10-16 01:03:02,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:03:02,851 INFO L241 Difference]: Finished difference. Result has 53 places, 51 transitions, 273 flow [2020-10-16 01:03:02,852 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2020-10-16 01:03:02,852 INFO L342 CegarLoopForPetriNet]: 48 programPoint places, 5 predicate places. [2020-10-16 01:03:02,852 INFO L481 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 273 flow [2020-10-16 01:03:02,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:03:02,852 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:03:02,852 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:03:02,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-16 01:03:02,853 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 01:03:02,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:03:02,853 INFO L82 PathProgramCache]: Analyzing trace with hash -242594376, now seen corresponding path program 1 times [2020-10-16 01:03:02,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:03:02,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575814345] [2020-10-16 01:03:02,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:03:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:03:02,876 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 01:03:02,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575814345] [2020-10-16 01:03:02,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:03:02,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:03:02,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633970852] [2020-10-16 01:03:02,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:03:02,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:03:02,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:03:02,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:03:02,879 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 213 [2020-10-16 01:03:02,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 273 flow. Second operand 4 states. [2020-10-16 01:03:02,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:03:02,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 213 [2020-10-16 01:03:02,879 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:03:21,014 INFO L129 PetriNetUnfolder]: 118470/148178 cut-off events. [2020-10-16 01:03:21,014 INFO L130 PetriNetUnfolder]: For 136869/1157928 co-relation queries the response was YES. [2020-10-16 01:03:21,723 INFO L80 FinitePrefix]: Finished finitePrefix Result has 442408 conditions, 148178 events. 118470/148178 cut-off events. For 136869/1157928 co-relation queries the response was YES. Maximal size of possible extension queue 5570. Compared 844556 event pairs, 20482 based on Foata normal form. 14/109899 useless extension candidates. Maximal degree in co-relation 442383. Up to 121035 conditions per place. [2020-10-16 01:03:22,497 INFO L132 encePairwiseOnDemand]: 211/213 looper letters, 63 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2020-10-16 01:03:22,497 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 511 flow [2020-10-16 01:03:22,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:03:22,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:03:22,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2020-10-16 01:03:22,498 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5195618153364632 [2020-10-16 01:03:22,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2020-10-16 01:03:22,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2020-10-16 01:03:22,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:03:22,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2020-10-16 01:03:22,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:03:22,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:03:22,500 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:03:22,500 INFO L185 Difference]: Start difference. First operand has 53 places, 51 transitions, 273 flow. Second operand 3 states and 332 transitions. [2020-10-16 01:03:22,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 511 flow [2020-10-16 01:03:26,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 74 transitions, 469 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:03:26,614 INFO L241 Difference]: Finished difference. Result has 52 places, 50 transitions, 245 flow [2020-10-16 01:03:26,614 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=245, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2020-10-16 01:03:26,615 INFO L342 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2020-10-16 01:03:26,615 INFO L481 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 245 flow [2020-10-16 01:03:26,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:03:26,615 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:03:26,615 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:03:26,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-16 01:03:26,615 INFO L429 AbstractCegarLoop]: === Iteration 4 === [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 01:03:26,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:03:26,615 INFO L82 PathProgramCache]: Analyzing trace with hash -242609250, now seen corresponding path program 1 times [2020-10-16 01:03:26,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:03:26,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509473893] [2020-10-16 01:03:26,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:03:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:03:26,633 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 01:03:26,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509473893] [2020-10-16 01:03:26,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:03:26,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:03:26,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073411212] [2020-10-16 01:03:26,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:03:26,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:03:26,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:03:26,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:03:26,637 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 213 [2020-10-16 01:03:26,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 245 flow. Second operand 4 states. [2020-10-16 01:03:26,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:03:26,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 213 [2020-10-16 01:03:26,638 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:03:40,540 INFO L129 PetriNetUnfolder]: 96217/120810 cut-off events. [2020-10-16 01:03:40,540 INFO L130 PetriNetUnfolder]: For 98341/861601 co-relation queries the response was YES. [2020-10-16 01:03:41,081 INFO L80 FinitePrefix]: Finished finitePrefix Result has 347017 conditions, 120810 events. 96217/120810 cut-off events. For 98341/861601 co-relation queries the response was YES. Maximal size of possible extension queue 4414. Compared 672570 event pairs, 27841 based on Foata normal form. 12/89082 useless extension candidates. Maximal degree in co-relation 346974. Up to 98521 conditions per place. [2020-10-16 01:03:41,682 INFO L132 encePairwiseOnDemand]: 211/213 looper letters, 61 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2020-10-16 01:03:41,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 463 flow [2020-10-16 01:03:41,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:03:41,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:03:41,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2020-10-16 01:03:41,683 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5211267605633803 [2020-10-16 01:03:41,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2020-10-16 01:03:41,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2020-10-16 01:03:41,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:03:41,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2020-10-16 01:03:41,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:03:41,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:03:41,685 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:03:41,685 INFO L185 Difference]: Start difference. First operand has 52 places, 50 transitions, 245 flow. Second operand 3 states and 333 transitions. [2020-10-16 01:03:41,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 463 flow [2020-10-16 01:03:41,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 72 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:03:41,697 INFO L241 Difference]: Finished difference. Result has 52 places, 49 transitions, 243 flow [2020-10-16 01:03:41,697 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2020-10-16 01:03:41,697 INFO L342 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2020-10-16 01:03:41,697 INFO L481 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 243 flow [2020-10-16 01:03:41,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:03:41,697 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:03:41,698 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-10-16 01:03:41,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-16 01:03:41,698 INFO L429 AbstractCegarLoop]: === Iteration 5 === [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 01:03:41,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:03:41,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1404864702, now seen corresponding path program 1 times [2020-10-16 01:03:41,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:03:41,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070669443] [2020-10-16 01:03:41,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:03:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:03:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 01:03:41,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070669443] [2020-10-16 01:03:41,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:03:41,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:03:41,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474365887] [2020-10-16 01:03:41,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:03:41,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:03:41,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:03:41,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:03:41,718 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 213 [2020-10-16 01:03:41,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 243 flow. Second operand 3 states. [2020-10-16 01:03:41,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:03:41,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 213 [2020-10-16 01:03:41,718 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:04:00,112 INFO L129 PetriNetUnfolder]: 131938/166757 cut-off events. [2020-10-16 01:04:00,114 INFO L130 PetriNetUnfolder]: For 185917/1088004 co-relation queries the response was YES. [2020-10-16 01:04:00,934 INFO L80 FinitePrefix]: Finished finitePrefix Result has 484766 conditions, 166757 events. 131938/166757 cut-off events. For 185917/1088004 co-relation queries the response was YES. Maximal size of possible extension queue 6115. Compared 959892 event pairs, 55856 based on Foata normal form. 4/124511 useless extension candidates. Maximal degree in co-relation 484742. Up to 123233 conditions per place. [2020-10-16 01:04:01,838 INFO L132 encePairwiseOnDemand]: 204/213 looper letters, 48 selfloop transitions, 25 changer transitions 0/82 dead transitions. [2020-10-16 01:04:01,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 82 transitions, 549 flow [2020-10-16 01:04:01,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:04:01,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:04:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2020-10-16 01:04:01,839 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5211267605633803 [2020-10-16 01:04:01,839 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2020-10-16 01:04:01,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2020-10-16 01:04:01,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:04:01,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2020-10-16 01:04:01,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:04:01,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:04:01,840 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:04:01,840 INFO L185 Difference]: Start difference. First operand has 52 places, 49 transitions, 243 flow. Second operand 3 states and 333 transitions. [2020-10-16 01:04:01,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 82 transitions, 549 flow [2020-10-16 01:04:01,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 545 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:04:01,864 INFO L241 Difference]: Finished difference. Result has 55 places, 70 transitions, 511 flow [2020-10-16 01:04:01,865 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=511, PETRI_PLACES=55, PETRI_TRANSITIONS=70} [2020-10-16 01:04:01,865 INFO L342 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2020-10-16 01:04:01,865 INFO L481 AbstractCegarLoop]: Abstraction has has 55 places, 70 transitions, 511 flow [2020-10-16 01:04:01,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:04:01,865 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:04:01,865 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:04:01,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-16 01:04:01,865 INFO L429 AbstractCegarLoop]: === Iteration 6 === [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 01:04:01,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:04:01,865 INFO L82 PathProgramCache]: Analyzing trace with hash -601130141, now seen corresponding path program 1 times [2020-10-16 01:04:01,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:04:01,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241953687] [2020-10-16 01:04:01,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:04:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:04:01,883 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 01:04:01,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241953687] [2020-10-16 01:04:01,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:04:01,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:04:01,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743510810] [2020-10-16 01:04:01,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:04:01,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:04:01,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:04:01,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:04:01,886 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 213 [2020-10-16 01:04:01,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 70 transitions, 511 flow. Second operand 4 states. [2020-10-16 01:04:01,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:04:01,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 213 [2020-10-16 01:04:01,887 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:04:16,278 INFO L129 PetriNetUnfolder]: 106386/135070 cut-off events. [2020-10-16 01:04:16,278 INFO L130 PetriNetUnfolder]: For 258808/2561482 co-relation queries the response was YES. [2020-10-16 01:04:17,131 INFO L80 FinitePrefix]: Finished finitePrefix Result has 481245 conditions, 135070 events. 106386/135070 cut-off events. For 258808/2561482 co-relation queries the response was YES. Maximal size of possible extension queue 4883. Compared 790343 event pairs, 18277 based on Foata normal form. 6157/111437 useless extension candidates. Maximal degree in co-relation 481220. Up to 109455 conditions per place. [2020-10-16 01:04:17,895 INFO L132 encePairwiseOnDemand]: 211/213 looper letters, 88 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2020-10-16 01:04:17,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 101 transitions, 887 flow [2020-10-16 01:04:17,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:04:17,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:04:17,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2020-10-16 01:04:17,896 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5179968701095462 [2020-10-16 01:04:17,896 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 331 transitions. [2020-10-16 01:04:17,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 331 transitions. [2020-10-16 01:04:17,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:04:17,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 331 transitions. [2020-10-16 01:04:17,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:04:17,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:04:17,898 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:04:17,898 INFO L185 Difference]: Start difference. First operand has 55 places, 70 transitions, 511 flow. Second operand 3 states and 331 transitions. [2020-10-16 01:04:17,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 101 transitions, 887 flow [2020-10-16 01:04:19,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 101 transitions, 837 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:04:19,039 INFO L241 Difference]: Finished difference. Result has 54 places, 69 transitions, 465 flow [2020-10-16 01:04:19,039 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=465, PETRI_PLACES=54, PETRI_TRANSITIONS=69} [2020-10-16 01:04:19,039 INFO L342 CegarLoopForPetriNet]: 48 programPoint places, 6 predicate places. [2020-10-16 01:04:19,039 INFO L481 AbstractCegarLoop]: Abstraction has has 54 places, 69 transitions, 465 flow [2020-10-16 01:04:19,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:04:19,039 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:04:19,039 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:04:19,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-16 01:04:19,040 INFO L429 AbstractCegarLoop]: === Iteration 7 === [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 01:04:19,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:04:19,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1950756351, now seen corresponding path program 1 times [2020-10-16 01:04:19,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:04:19,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437763651] [2020-10-16 01:04:19,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:04:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:04:19,058 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 01:04:19,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437763651] [2020-10-16 01:04:19,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:04:19,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:04:19,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675647355] [2020-10-16 01:04:19,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:04:19,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:04:19,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:04:19,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:04:19,060 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 213 [2020-10-16 01:04:19,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 69 transitions, 465 flow. Second operand 3 states. [2020-10-16 01:04:19,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:04:19,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 213 [2020-10-16 01:04:19,061 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:04:46,288 INFO L129 PetriNetUnfolder]: 142739/182676 cut-off events. [2020-10-16 01:04:46,289 INFO L130 PetriNetUnfolder]: For 396973/3114377 co-relation queries the response was YES. [2020-10-16 01:04:47,280 INFO L80 FinitePrefix]: Finished finitePrefix Result has 621615 conditions, 182676 events. 142739/182676 cut-off events. For 396973/3114377 co-relation queries the response was YES. Maximal size of possible extension queue 6757. Compared 1092736 event pairs, 52355 based on Foata normal form. 22/144329 useless extension candidates. Maximal degree in co-relation 621590. Up to 136628 conditions per place. [2020-10-16 01:04:48,292 INFO L132 encePairwiseOnDemand]: 204/213 looper letters, 64 selfloop transitions, 45 changer transitions 0/118 dead transitions. [2020-10-16 01:04:48,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 118 transitions, 1025 flow [2020-10-16 01:04:48,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:04:48,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:04:48,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2020-10-16 01:04:48,293 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.513302034428795 [2020-10-16 01:04:48,293 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2020-10-16 01:04:48,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2020-10-16 01:04:48,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:04:48,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2020-10-16 01:04:48,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:04:48,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:04:48,295 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:04:48,295 INFO L185 Difference]: Start difference. First operand has 54 places, 69 transitions, 465 flow. Second operand 3 states and 328 transitions. [2020-10-16 01:04:48,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 118 transitions, 1025 flow [2020-10-16 01:04:48,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 118 transitions, 1017 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:04:48,368 INFO L241 Difference]: Finished difference. Result has 57 places, 106 transitions, 1019 flow [2020-10-16 01:04:48,368 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1019, PETRI_PLACES=57, PETRI_TRANSITIONS=106} [2020-10-16 01:04:48,368 INFO L342 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2020-10-16 01:04:48,368 INFO L481 AbstractCegarLoop]: Abstraction has has 57 places, 106 transitions, 1019 flow [2020-10-16 01:04:48,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:04:48,368 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:04:48,368 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:04:48,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-16 01:04:48,368 INFO L429 AbstractCegarLoop]: === Iteration 8 === [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 01:04:48,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:04:48,369 INFO L82 PathProgramCache]: Analyzing trace with hash 343906932, now seen corresponding path program 1 times [2020-10-16 01:04:48,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:04:48,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684117249] [2020-10-16 01:04:48,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:04:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:04:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 01:04:48,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684117249] [2020-10-16 01:04:48,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:04:48,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:04:48,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407828668] [2020-10-16 01:04:48,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:04:48,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:04:48,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:04:48,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:04:48,395 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 213 [2020-10-16 01:04:48,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 106 transitions, 1019 flow. Second operand 4 states. [2020-10-16 01:04:48,395 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:04:48,395 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 213 [2020-10-16 01:04:48,395 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:05:03,639 INFO L129 PetriNetUnfolder]: 114458/147254 cut-off events. [2020-10-16 01:05:03,639 INFO L130 PetriNetUnfolder]: For 477818/5926872 co-relation queries the response was YES. [2020-10-16 01:05:04,565 INFO L80 FinitePrefix]: Finished finitePrefix Result has 603510 conditions, 147254 events. 114458/147254 cut-off events. For 477818/5926872 co-relation queries the response was YES. Maximal size of possible extension queue 5453. Compared 888845 event pairs, 21554 based on Foata normal form. 7193/128767 useless extension candidates. Maximal degree in co-relation 603484. Up to 118717 conditions per place. [2020-10-16 01:05:05,449 INFO L132 encePairwiseOnDemand]: 211/213 looper letters, 136 selfloop transitions, 8 changer transitions 0/153 dead transitions. [2020-10-16 01:05:05,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 153 transitions, 1711 flow [2020-10-16 01:05:05,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:05:05,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:05:05,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2020-10-16 01:05:05,451 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5101721439749609 [2020-10-16 01:05:05,451 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 326 transitions. [2020-10-16 01:05:05,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 326 transitions. [2020-10-16 01:05:05,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:05:05,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 326 transitions. [2020-10-16 01:05:05,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:05:05,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:05:05,452 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:05:05,453 INFO L185 Difference]: Start difference. First operand has 57 places, 106 transitions, 1019 flow. Second operand 3 states and 326 transitions. [2020-10-16 01:05:05,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 153 transitions, 1711 flow [2020-10-16 01:05:07,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 153 transitions, 1621 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:05:07,410 INFO L241 Difference]: Finished difference. Result has 56 places, 105 transitions, 941 flow [2020-10-16 01:05:07,410 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=941, PETRI_PLACES=56, PETRI_TRANSITIONS=105} [2020-10-16 01:05:07,413 INFO L342 CegarLoopForPetriNet]: 48 programPoint places, 8 predicate places. [2020-10-16 01:05:07,413 INFO L481 AbstractCegarLoop]: Abstraction has has 56 places, 105 transitions, 941 flow [2020-10-16 01:05:07,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:05:07,414 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:05:07,414 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:05:07,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-16 01:05:07,414 INFO L429 AbstractCegarLoop]: === Iteration 9 === [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 01:05:07,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:05:07,414 INFO L82 PathProgramCache]: Analyzing trace with hash -408592942, now seen corresponding path program 1 times [2020-10-16 01:05:07,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:05:07,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792559874] [2020-10-16 01:05:07,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:05:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:05:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-16 01:05:07,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792559874] [2020-10-16 01:05:07,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:05:07,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:05:07,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510361730] [2020-10-16 01:05:07,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:05:07,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:05:07,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:05:07,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:05:07,440 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 213 [2020-10-16 01:05:07,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 105 transitions, 941 flow. Second operand 3 states. [2020-10-16 01:05:07,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:05:07,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 213 [2020-10-16 01:05:07,441 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:05:39,251 INFO L129 PetriNetUnfolder]: 151068/196255 cut-off events. [2020-10-16 01:05:39,254 INFO L130 PetriNetUnfolder]: For 692582/4613941 co-relation queries the response was YES. [2020-10-16 01:05:40,370 INFO L80 FinitePrefix]: Finished finitePrefix Result has 773632 conditions, 196255 events. 151068/196255 cut-off events. For 692582/4613941 co-relation queries the response was YES. Maximal size of possible extension queue 7476. Compared 1228732 event pairs, 48076 based on Foata normal form. 72/164852 useless extension candidates. Maximal degree in co-relation 773606. Up to 148267 conditions per place. [2020-10-16 01:05:41,581 INFO L132 encePairwiseOnDemand]: 204/213 looper letters, 92 selfloop transitions, 81 changer transitions 0/182 dead transitions. [2020-10-16 01:05:41,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 182 transitions, 2009 flow [2020-10-16 01:05:41,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:05:41,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:05:41,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2020-10-16 01:05:41,582 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5101721439749609 [2020-10-16 01:05:41,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 326 transitions. [2020-10-16 01:05:41,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 326 transitions. [2020-10-16 01:05:41,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:05:41,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 326 transitions. [2020-10-16 01:05:41,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:05:41,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:05:41,584 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:05:41,584 INFO L185 Difference]: Start difference. First operand has 56 places, 105 transitions, 941 flow. Second operand 3 states and 326 transitions. [2020-10-16 01:05:41,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 182 transitions, 2009 flow [2020-10-16 01:05:41,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 182 transitions, 1993 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:05:41,636 INFO L241 Difference]: Finished difference. Result has 59 places, 170 transitions, 2063 flow [2020-10-16 01:05:41,637 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2063, PETRI_PLACES=59, PETRI_TRANSITIONS=170} [2020-10-16 01:05:41,637 INFO L342 CegarLoopForPetriNet]: 48 programPoint places, 11 predicate places. [2020-10-16 01:05:41,637 INFO L481 AbstractCegarLoop]: Abstraction has has 59 places, 170 transitions, 2063 flow [2020-10-16 01:05:41,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:05:41,637 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:05:41,637 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:05:41,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-16 01:05:41,637 INFO L429 AbstractCegarLoop]: === Iteration 10 === [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 01:05:41,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:05:41,638 INFO L82 PathProgramCache]: Analyzing trace with hash 218524637, now seen corresponding path program 1 times [2020-10-16 01:05:41,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:05:41,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869090096] [2020-10-16 01:05:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:05:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:05:41,657 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-16 01:05:41,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869090096] [2020-10-16 01:05:41,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:05:41,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:05:41,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839492327] [2020-10-16 01:05:41,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:05:41,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:05:41,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:05:41,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:05:41,659 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 213 [2020-10-16 01:05:41,660 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 170 transitions, 2063 flow. Second operand 4 states. [2020-10-16 01:05:41,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:05:41,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 213 [2020-10-16 01:05:41,660 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:05:59,319 INFO L129 PetriNetUnfolder]: 120726/157802 cut-off events. [2020-10-16 01:05:59,319 INFO L130 PetriNetUnfolder]: For 766410/6651247 co-relation queries the response was YES. [2020-10-16 01:06:00,419 INFO L80 FinitePrefix]: Finished finitePrefix Result has 739225 conditions, 157802 events. 120726/157802 cut-off events. For 766410/6651247 co-relation queries the response was YES. Maximal size of possible extension queue 6046. Compared 999826 event pairs, 25857 based on Foata normal form. 8232/146849 useless extension candidates. Maximal degree in co-relation 739198. Up to 126059 conditions per place. [2020-10-16 01:06:10,425 INFO L132 encePairwiseOnDemand]: 211/213 looper letters, 220 selfloop transitions, 16 changer transitions 0/245 dead transitions. [2020-10-16 01:06:10,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 245 transitions, 3371 flow [2020-10-16 01:06:10,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:06:10,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:06:10,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2020-10-16 01:06:10,426 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5070422535211268 [2020-10-16 01:06:10,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 324 transitions. [2020-10-16 01:06:10,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 324 transitions. [2020-10-16 01:06:10,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:06:10,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 324 transitions. [2020-10-16 01:06:10,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:06:10,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:06:10,428 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:06:10,428 INFO L185 Difference]: Start difference. First operand has 59 places, 170 transitions, 2063 flow. Second operand 3 states and 324 transitions. [2020-10-16 01:06:10,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 245 transitions, 3371 flow [2020-10-16 01:06:13,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 245 transitions, 3209 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:06:13,356 INFO L241 Difference]: Finished difference. Result has 58 places, 169 transitions, 1929 flow [2020-10-16 01:06:13,356 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1929, PETRI_PLACES=58, PETRI_TRANSITIONS=169} [2020-10-16 01:06:13,356 INFO L342 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2020-10-16 01:06:13,356 INFO L481 AbstractCegarLoop]: Abstraction has has 58 places, 169 transitions, 1929 flow [2020-10-16 01:06:13,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:06:13,356 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:06:13,356 INFO L255 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:06:13,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-16 01:06:13,357 INFO L429 AbstractCegarLoop]: === Iteration 11 === [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 01:06:13,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:06:13,357 INFO L82 PathProgramCache]: Analyzing trace with hash -640482003, now seen corresponding path program 1 times [2020-10-16 01:06:13,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:06:13,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315635305] [2020-10-16 01:06:13,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:06:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:06:13,375 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-16 01:06:13,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315635305] [2020-10-16 01:06:13,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:06:13,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:06:13,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984475389] [2020-10-16 01:06:13,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:06:13,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:06:13,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:06:13,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:06:13,378 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 213 [2020-10-16 01:06:13,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 169 transitions, 1929 flow. Second operand 3 states. [2020-10-16 01:06:13,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:06:13,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 213 [2020-10-16 01:06:13,378 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:06:46,881 INFO L129 PetriNetUnfolder]: 159073/210362 cut-off events. [2020-10-16 01:06:46,881 INFO L130 PetriNetUnfolder]: For 1044707/1166306 co-relation queries the response was YES. [2020-10-16 01:06:48,204 INFO L80 FinitePrefix]: Finished finitePrefix Result has 954581 conditions, 210362 events. 159073/210362 cut-off events. For 1044707/1166306 co-relation queries the response was YES. Maximal size of possible extension queue 8227. Compared 1391934 event pairs, 44697 based on Foata normal form. 160/188690 useless extension candidates. Maximal degree in co-relation 954554. Up to 161162 conditions per place. [2020-10-16 01:06:50,409 INFO L132 encePairwiseOnDemand]: 204/213 looper letters, 140 selfloop transitions, 145 changer transitions 0/294 dead transitions. [2020-10-16 01:06:50,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 294 transitions, 3985 flow [2020-10-16 01:06:50,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:06:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:06:50,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2020-10-16 01:06:50,410 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5070422535211268 [2020-10-16 01:06:50,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 324 transitions. [2020-10-16 01:06:50,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 324 transitions. [2020-10-16 01:06:50,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:06:50,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 324 transitions. [2020-10-16 01:06:50,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:06:50,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:06:50,412 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:06:50,412 INFO L185 Difference]: Start difference. First operand has 58 places, 169 transitions, 1929 flow. Second operand 3 states and 324 transitions. [2020-10-16 01:06:50,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 294 transitions, 3985 flow [2020-10-16 01:06:50,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 294 transitions, 3953 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:06:50,475 INFO L241 Difference]: Finished difference. Result has 61 places, 282 transitions, 4147 flow [2020-10-16 01:06:50,475 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4147, PETRI_PLACES=61, PETRI_TRANSITIONS=282} [2020-10-16 01:06:50,475 INFO L342 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2020-10-16 01:06:50,476 INFO L481 AbstractCegarLoop]: Abstraction has has 61 places, 282 transitions, 4147 flow [2020-10-16 01:06:50,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:06:50,476 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:06:50,476 INFO L255 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:06:50,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-16 01:06:50,476 INFO L429 AbstractCegarLoop]: === Iteration 12 === [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 01:06:50,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:06:50,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1619897318, now seen corresponding path program 1 times [2020-10-16 01:06:50,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:06:50,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722869997] [2020-10-16 01:06:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:06:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:06:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-16 01:06:50,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722869997] [2020-10-16 01:06:50,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:06:50,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:06:50,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501488496] [2020-10-16 01:06:50,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:06:50,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:06:50,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:06:50,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:06:50,508 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 213 [2020-10-16 01:06:50,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 282 transitions, 4147 flow. Second operand 4 states. [2020-10-16 01:06:50,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:06:50,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 213 [2020-10-16 01:06:50,508 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:07:22,172 INFO L129 PetriNetUnfolder]: 127614/169930 cut-off events. [2020-10-16 01:07:22,173 INFO L130 PetriNetUnfolder]: For 1119375/1358436 co-relation queries the response was YES. [2020-10-16 01:07:23,257 INFO L80 FinitePrefix]: Finished finitePrefix Result has 904668 conditions, 169930 events. 127614/169930 cut-off events. For 1119375/1358436 co-relation queries the response was YES. Maximal size of possible extension queue 6671. Compared 1131159 event pairs, 32143 based on Foata normal form. 9192/168572 useless extension candidates. Maximal degree in co-relation 904640. Up to 130785 conditions per place. [2020-10-16 01:07:24,975 INFO L132 encePairwiseOnDemand]: 211/213 looper letters, 363 selfloop transitions, 32 changer transitions 0/404 dead transitions. [2020-10-16 01:07:24,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 404 transitions, 6611 flow [2020-10-16 01:07:24,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:07:24,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:07:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2020-10-16 01:07:24,977 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5039123630672926 [2020-10-16 01:07:24,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2020-10-16 01:07:24,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2020-10-16 01:07:24,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:07:24,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2020-10-16 01:07:24,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:07:24,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:07:24,978 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:07:24,978 INFO L185 Difference]: Start difference. First operand has 61 places, 282 transitions, 4147 flow. Second operand 3 states and 322 transitions. [2020-10-16 01:07:24,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 404 transitions, 6611 flow [2020-10-16 01:07:30,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 404 transitions, 6321 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:07:30,617 INFO L241 Difference]: Finished difference. Result has 60 places, 281 transitions, 3917 flow [2020-10-16 01:07:30,618 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=3853, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3917, PETRI_PLACES=60, PETRI_TRANSITIONS=281} [2020-10-16 01:07:30,618 INFO L342 CegarLoopForPetriNet]: 48 programPoint places, 12 predicate places. [2020-10-16 01:07:30,618 INFO L481 AbstractCegarLoop]: Abstraction has has 60 places, 281 transitions, 3917 flow [2020-10-16 01:07:30,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:07:30,618 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:07:30,618 INFO L255 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:07:30,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-16 01:07:30,619 INFO L429 AbstractCegarLoop]: === Iteration 13 === [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 01:07:30,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:07:30,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1741862694, now seen corresponding path program 1 times [2020-10-16 01:07:30,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:07:30,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112748763] [2020-10-16 01:07:30,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:07:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:07:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-16 01:07:30,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112748763] [2020-10-16 01:07:30,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:07:30,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:07:30,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517835722] [2020-10-16 01:07:30,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:07:30,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:07:30,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:07:30,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:07:30,638 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 213 [2020-10-16 01:07:30,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 281 transitions, 3917 flow. Second operand 3 states. [2020-10-16 01:07:30,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:07:30,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 213 [2020-10-16 01:07:30,638 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:08:27,812 INFO L129 PetriNetUnfolder]: 180722/242637 cut-off events. [2020-10-16 01:08:27,813 INFO L130 PetriNetUnfolder]: For 1568315/3835871 co-relation queries the response was YES. [2020-10-16 01:08:29,213 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1262226 conditions, 242637 events. 180722/242637 cut-off events. For 1568315/3835871 co-relation queries the response was YES. Maximal size of possible extension queue 12090. Compared 1743123 event pairs, 50816 based on Foata normal form. 334/232509 useless extension candidates. Maximal degree in co-relation 1262198. Up to 193385 conditions per place. [2020-10-16 01:08:30,785 INFO L132 encePairwiseOnDemand]: 204/213 looper letters, 220 selfloop transitions, 257 changer transitions 0/486 dead transitions. [2020-10-16 01:08:30,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 486 transitions, 7833 flow [2020-10-16 01:08:30,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:08:30,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:08:30,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2020-10-16 01:08:30,786 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5039123630672926 [2020-10-16 01:08:30,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2020-10-16 01:08:30,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2020-10-16 01:08:30,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:08:30,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2020-10-16 01:08:30,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:08:30,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:08:30,788 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:08:30,788 INFO L185 Difference]: Start difference. First operand has 60 places, 281 transitions, 3917 flow. Second operand 3 states and 322 transitions. [2020-10-16 01:08:30,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 486 transitions, 7833 flow [2020-10-16 01:08:31,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 486 transitions, 7769 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:08:31,060 INFO L241 Difference]: Finished difference. Result has 63 places, 474 transitions, 8183 flow [2020-10-16 01:08:31,061 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=3885, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=8183, PETRI_PLACES=63, PETRI_TRANSITIONS=474} [2020-10-16 01:08:31,061 INFO L342 CegarLoopForPetriNet]: 48 programPoint places, 15 predicate places. [2020-10-16 01:08:31,061 INFO L481 AbstractCegarLoop]: Abstraction has has 63 places, 474 transitions, 8183 flow [2020-10-16 01:08:31,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:08:31,062 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:08:31,062 INFO L255 CegarLoopForPetriNet]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:08:31,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-16 01:08:31,062 INFO L429 AbstractCegarLoop]: === Iteration 14 === [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 01:08:31,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:08:31,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1837019004, now seen corresponding path program 1 times [2020-10-16 01:08:31,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:08:31,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277568932] [2020-10-16 01:08:31,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:08:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:08:31,069 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:08:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:08:31,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:08:31,081 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:08:31,081 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:08:31,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-16 01:08:31,082 WARN L371 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:08:31,082 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2020-10-16 01:08:31,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,099 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,099 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,099 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,100 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,100 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,100 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,100 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,101 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,101 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,101 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,103 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,103 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,103 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,103 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,103 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,103 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,103 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,104 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,104 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,104 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,104 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,104 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,104 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,104 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,105 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,105 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,105 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,105 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,105 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,105 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,105 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,105 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,106 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,106 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,106 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,106 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,106 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,106 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,106 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,106 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,107 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,107 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,107 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,108 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,108 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,108 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,108 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,108 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,108 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,108 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,108 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,108 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,109 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,109 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,109 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,109 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,110 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,110 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,110 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,111 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,111 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,111 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,111 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,111 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,111 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,113 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,113 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,113 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,114 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,114 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,115 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,115 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,115 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,115 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,115 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,116 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,116 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,117 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,117 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,117 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,117 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,118 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,118 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,118 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,118 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,118 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,119 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,119 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,120 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,120 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,120 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,121 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,121 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,121 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,122 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,123 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,123 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:08:31,124 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-10-16 01:08:31,124 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:08:31,124 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:08:31,124 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:08:31,124 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:08:31,124 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:08:31,124 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:08:31,124 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:08:31,124 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:08:31,126 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 132 places, 124 transitions, 344 flow [2020-10-16 01:08:31,142 INFO L129 PetriNetUnfolder]: 17/195 cut-off events. [2020-10-16 01:08:31,142 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2020-10-16 01:08:31,144 INFO L80 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 195 events. 17/195 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 596 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 214. Up to 18 conditions per place. [2020-10-16 01:08:31,144 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 124 transitions, 344 flow [2020-10-16 01:08:31,146 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 124 transitions, 344 flow [2020-10-16 01:08:31,146 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:08:31,146 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 124 transitions, 344 flow [2020-10-16 01:08:31,146 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 124 transitions, 344 flow [2020-10-16 01:08:31,146 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 132 places, 124 transitions, 344 flow [2020-10-16 01:08:31,157 INFO L129 PetriNetUnfolder]: 17/195 cut-off events. [2020-10-16 01:08:31,157 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2020-10-16 01:08:31,159 INFO L80 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 195 events. 17/195 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 545 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 214. Up to 18 conditions per place. [2020-10-16 01:08:31,167 INFO L117 LiptonReduction]: Number of co-enabled transitions 10656 [2020-10-16 01:08:32,574 INFO L132 LiptonReduction]: Checked pairs total: 20072 [2020-10-16 01:08:32,574 INFO L134 LiptonReduction]: Total number of compositions: 114 [2020-10-16 01:08:32,574 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1428 [2020-10-16 01:08:32,575 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2020-10-16 01:08:32,576 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:08:32,576 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:08:32,576 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 01:08:32,576 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 01:08:32,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:08:32,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1315936036, now seen corresponding path program 1 times [2020-10-16 01:08:32,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:08:32,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023294616] [2020-10-16 01:08:32,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:08:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:08:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:08:32,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023294616] [2020-10-16 01:08:32,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:08:32,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:08:32,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468981312] [2020-10-16 01:08:32,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:08:32,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:08:32,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:08:32,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:08:32,596 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 238 [2020-10-16 01:08:32,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 174 flow. Second operand 3 states. [2020-10-16 01:08:32,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:08:32,596 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 238 [2020-10-16 01:08:32,596 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:10:29,091 INFO L129 PetriNetUnfolder]: 483309/581636 cut-off events. [2020-10-16 01:10:29,093 INFO L130 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2020-10-16 01:10:33,083 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1163309 conditions, 581636 events. 483309/581636 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 19898. Compared 3248329 event pairs, 289454 based on Foata normal form. 98316/488719 useless extension candidates. Maximal degree in co-relation 1163220. Up to 417773 conditions per place. [2020-10-16 01:10:37,651 INFO L132 encePairwiseOnDemand]: 225/238 looper letters, 39 selfloop transitions, 9 changer transitions 0/58 dead transitions. [2020-10-16 01:10:37,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 308 flow [2020-10-16 01:10:37,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:10:37,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:10:37,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2020-10-16 01:10:37,652 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5518207282913166 [2020-10-16 01:10:37,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2020-10-16 01:10:37,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2020-10-16 01:10:37,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:10:37,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2020-10-16 01:10:37,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:10:37,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:10:37,654 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:10:37,655 INFO L185 Difference]: Start difference. First operand has 54 places, 39 transitions, 174 flow. Second operand 3 states and 394 transitions. [2020-10-16 01:10:37,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 308 flow [2020-10-16 01:10:37,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 252 flow, removed 28 selfloop flow, removed 0 redundant places. [2020-10-16 01:10:37,656 INFO L241 Difference]: Finished difference. Result has 57 places, 44 transitions, 182 flow [2020-10-16 01:10:37,656 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2020-10-16 01:10:37,656 INFO L342 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2020-10-16 01:10:37,656 INFO L481 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 182 flow [2020-10-16 01:10:37,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:10:37,657 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:10:37,657 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 01:10:37,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-16 01:10:37,657 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 01:10:37,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:10:37,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1612020287, now seen corresponding path program 1 times [2020-10-16 01:10:37,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:10:37,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552211772] [2020-10-16 01:10:37,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:10:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:10:37,672 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 01:10:37,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552211772] [2020-10-16 01:10:37,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:10:37,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:10:37,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835344040] [2020-10-16 01:10:37,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:10:37,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:10:37,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:10:37,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:10:37,675 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 238 [2020-10-16 01:10:37,675 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 182 flow. Second operand 3 states. [2020-10-16 01:10:37,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:10:37,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 238 [2020-10-16 01:10:37,675 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2020-10-16 01:12:46,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:12:46,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-16 01:12:46,024 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 01:12:46,026 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 01:12:46,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:12:46 BasicIcfg [2020-10-16 01:12:46,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:12:46,028 INFO L168 Benchmark]: Toolchain (without parser) took 687039.21 ms. Allocated memory was 250.6 MB in the beginning and 8.1 GB in the end (delta: 7.9 GB). Free memory was 206.6 MB in the beginning and 3.4 GB in the end (delta: -3.2 GB). Peak memory consumption was 8.6 GB. Max. memory is 14.2 GB. [2020-10-16 01:12:46,028 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:12:46,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.42 ms. Allocated memory was 250.6 MB in the beginning and 313.0 MB in the end (delta: 62.4 MB). Free memory was 206.6 MB in the beginning and 268.4 MB in the end (delta: -61.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:12:46,029 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.00 ms. Allocated memory is still 313.0 MB. Free memory is still 268.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:12:46,030 INFO L168 Benchmark]: Boogie Preprocessor took 24.53 ms. Allocated memory is still 313.0 MB. Free memory was 268.4 MB in the beginning and 265.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:12:46,030 INFO L168 Benchmark]: RCFGBuilder took 323.10 ms. Allocated memory is still 313.0 MB. Free memory was 265.9 MB in the beginning and 249.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:12:46,030 INFO L168 Benchmark]: TraceAbstraction took 685982.82 ms. Allocated memory was 313.0 MB in the beginning and 8.1 GB in the end (delta: 7.8 GB). Free memory was 249.1 MB in the beginning and 3.4 GB in the end (delta: -3.2 GB). Peak memory consumption was 8.6 GB. Max. memory is 14.2 GB. [2020-10-16 01:12:46,033 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 661.42 ms. Allocated memory was 250.6 MB in the beginning and 313.0 MB in the end (delta: 62.4 MB). Free memory was 206.6 MB in the beginning and 268.4 MB in the end (delta: -61.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 41.00 ms. Allocated memory is still 313.0 MB. Free memory is still 268.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.53 ms. Allocated memory is still 313.0 MB. Free memory was 268.4 MB in the beginning and 265.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 323.10 ms. Allocated memory is still 313.0 MB. Free memory was 265.9 MB in the beginning and 249.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 685982.82 ms. Allocated memory was 313.0 MB in the beginning and 8.1 GB in the end (delta: 7.8 GB). Free memory was 249.1 MB in the beginning and 3.4 GB in the end (delta: -3.2 GB). Peak memory consumption was 8.6 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 155 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 2 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.5s, 34 PlacesBefore, 11 PlacesAfterwards, 33 TransitionsBefore, 8 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 4 FixpointIterations, 9 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 32 TotalNumberOfCompositions, 209 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 589 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 1 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 34 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.6s, 48 PlacesBefore, 18 PlacesAfterwards, 46 TransitionsBefore, 13 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 4 FixpointIterations, 9 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 40 TotalNumberOfCompositions, 1268 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1190 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 51 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.7s, 62 PlacesBefore, 24 PlacesAfterwards, 59 TransitionsBefore, 17 TransitionsAfterwards, 1656 CoEnabledTransitionPairs, 4 FixpointIterations, 9 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 52 TotalNumberOfCompositions, 2526 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1931 VarBasedMoverChecksPositive, 65 VarBasedMoverChecksNegative, 20 SemBasedMoverChecksPositive, 45 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 97 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.9s, 76 PlacesBefore, 30 PlacesAfterwards, 72 TransitionsBefore, 23 TransitionsAfterwards, 2832 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 3 ChoiceCompositions, 66 TotalNumberOfCompositions, 5449 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 3042 VarBasedMoverChecksPositive, 104 VarBasedMoverChecksNegative, 52 SemBasedMoverChecksPositive, 52 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 118 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 90 PlacesBefore, 36 PlacesAfterwards, 85 TransitionsBefore, 28 TransitionsAfterwards, 4320 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 3 ChoiceCompositions, 79 TotalNumberOfCompositions, 8003 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 4349 VarBasedMoverChecksPositive, 153 VarBasedMoverChecksNegative, 79 SemBasedMoverChecksPositive, 74 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 252 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 104 PlacesBefore, 42 PlacesAfterwards, 98 TransitionsBefore, 33 TransitionsAfterwards, 6120 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 3 ChoiceCompositions, 92 TotalNumberOfCompositions, 12707 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 5641 VarBasedMoverChecksPositive, 111 VarBasedMoverChecksNegative, 24 SemBasedMoverChecksPositive, 87 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 175 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 118 PlacesBefore, 48 PlacesAfterwards, 111 TransitionsBefore, 34 TransitionsAfterwards, 8232 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 7 ChoiceCompositions, 102 TotalNumberOfCompositions, 15392 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 7599 VarBasedMoverChecksPositive, 143 VarBasedMoverChecksNegative, 50 SemBasedMoverChecksPositive, 93 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 297 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 132 PlacesBefore, 54 PlacesAfterwards, 124 TransitionsBefore, 39 TransitionsAfterwards, 10656 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 68 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 30 ConcurrentYvCompositions, 7 ChoiceCompositions, 114 TotalNumberOfCompositions, 20072 MoverChecksTotal - TimeoutResultAtElement [Line: 680]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 680). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (3states, 112/238 universal loopers) in iteration 2,while PetriNetUnfolder was constructing finite prefix that currently has 1572865 conditions, 602090 events (507114/602089 cut-off events. For 399363/2628574 co-relation queries the response was YES. Maximal size of possible extension queue 26369. Compared 3339673 event pairs, 253851 based on Foata normal form. 1/452094 useless extension candidates. Maximal degree in co-relation 1572823. Up to 453056 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 1 error locations. Started 8 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 685.6s, OverallIterations: 57, TraceHistogramMax: 8, AutomataDifference: 675.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.2s, HoareTripleCheckerStatistics: 896 SDtfs, 651 SDslu, 255 SDs, 0 SdLazy, 1223 SolverSat, 119 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8183occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 665 NumberOfCodeBlocks, 665 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 510 ConstructedInterpolants, 0 QuantifiedInterpolants, 7758 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 50 InterpolantComputations, 50 PerfectInterpolantSequences, 509/509 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown