/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 00:35:58,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 00:35:58,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 00:35:58,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 00:35:58,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 00:35:58,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 00:35:58,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 00:35:58,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 00:35:58,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 00:35:58,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 00:35:58,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 00:35:58,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 00:35:58,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 00:35:58,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 00:35:58,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 00:35:58,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 00:35:58,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 00:35:58,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 00:35:58,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 00:35:58,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 00:35:58,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 00:35:58,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 00:35:58,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 00:35:58,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 00:35:58,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-22 00:35:58,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 00:35:58,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 00:35:58,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 00:35:58,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 00:35:58,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 00:35:58,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 00:35:58,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 00:35:58,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 00:35:58,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 00:35:58,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 00:35:58,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 00:35:58,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-22 00:35:58,762 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 00:35:58,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 00:35:58,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 00:35:58,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 00:35:58,764 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 00:35:58,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 00:35:58,765 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 00:35:58,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 00:35:58,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 00:35:58,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 00:35:58,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 00:35:58,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 00:35:58,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 00:35:58,766 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 00:35:58,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 00:35:58,766 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 00:35:58,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 00:35:58,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 00:35:58,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 00:35:58,767 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 00:35:58,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 00:35:58,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 00:35:58,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 00:35:58,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 00:35:58,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 00:35:58,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 00:35:58,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 00:35:58,769 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 00:35:58,769 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 00:35:58,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 00:35:58,770 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 00:35:59,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 00:35:59,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 00:35:59,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 00:35:59,110 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 00:35:59,110 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 00:35:59,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-10-22 00:35:59,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bb084ef4/7e6bdd6ddef14b818077b26d0b40371b/FLAG6f61da9ad [2020-10-22 00:35:59,732 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 00:35:59,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-10-22 00:35:59,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bb084ef4/7e6bdd6ddef14b818077b26d0b40371b/FLAG6f61da9ad [2020-10-22 00:36:00,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bb084ef4/7e6bdd6ddef14b818077b26d0b40371b [2020-10-22 00:36:00,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 00:36:00,049 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 00:36:00,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 00:36:00,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 00:36:00,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 00:36:00,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:36:00" (1/1) ... [2020-10-22 00:36:00,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@315ad074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:00, skipping insertion in model container [2020-10-22 00:36:00,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:36:00" (1/1) ... [2020-10-22 00:36:00,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 00:36:00,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 00:36:00,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:36:00,666 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 00:36:00,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:36:00,805 INFO L208 MainTranslator]: Completed translation [2020-10-22 00:36:00,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:00 WrapperNode [2020-10-22 00:36:00,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 00:36:00,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 00:36:00,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 00:36:00,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 00:36:00,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:00" (1/1) ... [2020-10-22 00:36:00,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:00" (1/1) ... [2020-10-22 00:36:00,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 00:36:00,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 00:36:00,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 00:36:00,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 00:36:00,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:00" (1/1) ... [2020-10-22 00:36:00,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:00" (1/1) ... [2020-10-22 00:36:00,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:00" (1/1) ... [2020-10-22 00:36:00,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:00" (1/1) ... [2020-10-22 00:36:00,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:00" (1/1) ... [2020-10-22 00:36:00,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:00" (1/1) ... [2020-10-22 00:36:00,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:00" (1/1) ... [2020-10-22 00:36:00,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 00:36:00,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 00:36:00,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 00:36:00,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 00:36:00,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:00" (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 [2020-10-22 00:36:00,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 00:36:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 00:36:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 00:36:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 00:36:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 00:36:00,950 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 00:36:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 00:36:00,956 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 00:36:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 00:36:00,956 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 00:36:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 00:36:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 00:36:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 00:36:00,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 00:36:00,964 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 00:36:01,352 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 00:36:01,353 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 00:36:01,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:36:01 BoogieIcfgContainer [2020-10-22 00:36:01,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 00:36:01,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 00:36:01,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 00:36:01,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 00:36:01,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 12:36:00" (1/3) ... [2020-10-22 00:36:01,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b0b14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:36:01, skipping insertion in model container [2020-10-22 00:36:01,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:00" (2/3) ... [2020-10-22 00:36:01,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b0b14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:36:01, skipping insertion in model container [2020-10-22 00:36:01,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:36:01" (3/3) ... [2020-10-22 00:36:01,370 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2020-10-22 00:36:01,382 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 00:36:01,382 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 00:36:01,390 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 00:36:01,391 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 00:36:01,431 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,431 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,431 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,432 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,435 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,435 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,435 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,435 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,437 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,437 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,437 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,438 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,438 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,447 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,447 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,448 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,448 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,453 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,454 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,455 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,455 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,457 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,457 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,458 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,458 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:01,460 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 00:36:01,475 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-22 00:36:01,497 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 00:36:01,497 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 00:36:01,497 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 00:36:01,497 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 00:36:01,497 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 00:36:01,498 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 00:36:01,498 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 00:36:01,498 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 00:36:01,513 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 00:36:01,514 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 00:36:01,517 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 00:36:01,519 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-22 00:36:01,566 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-22 00:36:01,567 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 00:36:01,572 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-22 00:36:01,575 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-22 00:36:03,458 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-22 00:36:03,547 INFO L131 LiptonReduction]: Checked pairs total: 2774 [2020-10-22 00:36:03,547 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-10-22 00:36:03,554 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-22 00:36:03,581 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-22 00:36:03,584 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-22 00:36:03,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 00:36:03,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:03,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:03,594 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:03,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:03,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1189021961, now seen corresponding path program 1 times [2020-10-22 00:36:03,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:03,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380000527] [2020-10-22 00:36:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:03,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:03,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380000527] [2020-10-22 00:36:03,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:03,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 00:36:03,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1246786407] [2020-10-22 00:36:03,872 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:03,875 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:03,890 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 00:36:03,890 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:03,895 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:03,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:36:03,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:03,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:36:03,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:03,913 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-22 00:36:03,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:03,947 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-22 00:36:03,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:36:03,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-22 00:36:03,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:03,965 INFO L225 Difference]: With dead ends: 282 [2020-10-22 00:36:03,965 INFO L226 Difference]: Without dead ends: 218 [2020-10-22 00:36:03,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:03,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-22 00:36:04,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-22 00:36:04,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-22 00:36:04,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-22 00:36:04,037 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-22 00:36:04,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:04,038 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-22 00:36:04,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:36:04,039 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-22 00:36:04,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 00:36:04,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:04,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:04,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 00:36:04,041 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:04,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:04,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1794997166, now seen corresponding path program 1 times [2020-10-22 00:36:04,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:04,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102030468] [2020-10-22 00:36:04,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:04,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102030468] [2020-10-22 00:36:04,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:04,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:36:04,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [467178585] [2020-10-22 00:36:04,146 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:04,147 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:04,168 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-10-22 00:36:04,169 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:04,189 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:04,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:36:04,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:04,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:36:04,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:36:04,192 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-22 00:36:04,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:04,227 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-10-22 00:36:04,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 00:36:04,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-22 00:36:04,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:04,230 INFO L225 Difference]: With dead ends: 278 [2020-10-22 00:36:04,230 INFO L226 Difference]: Without dead ends: 182 [2020-10-22 00:36:04,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:36:04,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-22 00:36:04,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-10-22 00:36:04,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-22 00:36:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-10-22 00:36:04,249 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-10-22 00:36:04,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:04,249 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-10-22 00:36:04,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:36:04,249 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-10-22 00:36:04,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 00:36:04,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:04,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:04,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 00:36:04,254 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:04,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:04,254 INFO L82 PathProgramCache]: Analyzing trace with hash -918467642, now seen corresponding path program 1 times [2020-10-22 00:36:04,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:04,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872326131] [2020-10-22 00:36:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:04,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:04,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872326131] [2020-10-22 00:36:04,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:04,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:36:04,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [184516670] [2020-10-22 00:36:04,314 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:04,316 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:04,319 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-10-22 00:36:04,319 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:04,342 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:04,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:36:04,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:04,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:36:04,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:36:04,344 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 4 states. [2020-10-22 00:36:04,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:04,380 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-10-22 00:36:04,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 00:36:04,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-22 00:36:04,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:04,383 INFO L225 Difference]: With dead ends: 218 [2020-10-22 00:36:04,383 INFO L226 Difference]: Without dead ends: 146 [2020-10-22 00:36:04,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:36:04,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-22 00:36:04,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-22 00:36:04,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-22 00:36:04,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-22 00:36:04,395 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-10-22 00:36:04,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:04,396 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-22 00:36:04,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:36:04,396 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-22 00:36:04,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 00:36:04,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:04,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:04,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 00:36:04,398 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:04,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:04,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1593061484, now seen corresponding path program 1 times [2020-10-22 00:36:04,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:04,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623508123] [2020-10-22 00:36:04,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:04,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623508123] [2020-10-22 00:36:04,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:04,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 00:36:04,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1865454004] [2020-10-22 00:36:04,444 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:04,445 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:04,447 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-10-22 00:36:04,447 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:04,531 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:04,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:36:04,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:04,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:36:04,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:04,533 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-22 00:36:04,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:04,540 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-10-22 00:36:04,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:36:04,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-22 00:36:04,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:04,542 INFO L225 Difference]: With dead ends: 144 [2020-10-22 00:36:04,542 INFO L226 Difference]: Without dead ends: 144 [2020-10-22 00:36:04,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:04,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-22 00:36:04,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-22 00:36:04,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-22 00:36:04,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-10-22 00:36:04,553 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-10-22 00:36:04,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:04,553 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-10-22 00:36:04,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:36:04,554 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-10-22 00:36:04,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 00:36:04,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:04,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:04,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 00:36:04,556 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:04,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:04,556 INFO L82 PathProgramCache]: Analyzing trace with hash 2140263678, now seen corresponding path program 1 times [2020-10-22 00:36:04,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:04,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876297292] [2020-10-22 00:36:04,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:04,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876297292] [2020-10-22 00:36:04,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:04,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:36:04,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2089615437] [2020-10-22 00:36:04,620 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:04,621 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:04,624 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-22 00:36:04,625 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:04,640 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:04,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:36:04,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:04,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:36:04,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:04,642 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 3 states. [2020-10-22 00:36:04,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:04,653 INFO L93 Difference]: Finished difference Result 176 states and 415 transitions. [2020-10-22 00:36:04,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:36:04,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-22 00:36:04,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:04,655 INFO L225 Difference]: With dead ends: 176 [2020-10-22 00:36:04,655 INFO L226 Difference]: Without dead ends: 152 [2020-10-22 00:36:04,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:04,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-22 00:36:04,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 140. [2020-10-22 00:36:04,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-22 00:36:04,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 331 transitions. [2020-10-22 00:36:04,675 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 331 transitions. Word has length 12 [2020-10-22 00:36:04,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:04,675 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 331 transitions. [2020-10-22 00:36:04,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:36:04,675 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 331 transitions. [2020-10-22 00:36:04,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 00:36:04,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:04,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:04,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 00:36:04,680 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:04,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:04,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2140264484, now seen corresponding path program 1 times [2020-10-22 00:36:04,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:04,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161936993] [2020-10-22 00:36:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:04,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161936993] [2020-10-22 00:36:04,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:04,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:36:04,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1481451679] [2020-10-22 00:36:04,738 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:04,739 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:04,743 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-10-22 00:36:04,743 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:04,763 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 00:36:04,801 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 00:36:04,835 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 00:36:05,053 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3468#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-22 00:36:05,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 00:36:05,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:05,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 00:36:05,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:36:05,055 INFO L87 Difference]: Start difference. First operand 140 states and 331 transitions. Second operand 5 states. [2020-10-22 00:36:05,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:05,107 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-10-22 00:36:05,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 00:36:05,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-22 00:36:05,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:05,109 INFO L225 Difference]: With dead ends: 136 [2020-10-22 00:36:05,109 INFO L226 Difference]: Without dead ends: 96 [2020-10-22 00:36:05,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:36:05,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-22 00:36:05,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-22 00:36:05,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-22 00:36:05,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-10-22 00:36:05,113 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 12 [2020-10-22 00:36:05,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:05,113 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-10-22 00:36:05,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 00:36:05,114 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-10-22 00:36:05,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 00:36:05,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:05,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:05,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 00:36:05,115 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:05,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:05,116 INFO L82 PathProgramCache]: Analyzing trace with hash 2125100997, now seen corresponding path program 1 times [2020-10-22 00:36:05,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:05,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62438518] [2020-10-22 00:36:05,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:05,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62438518] [2020-10-22 00:36:05,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:05,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 00:36:05,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [151521240] [2020-10-22 00:36:05,174 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:05,175 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:05,181 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 75 transitions. [2020-10-22 00:36:05,181 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:05,212 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 00:36:05,330 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [3808#(not (= ~__unbuffered_cnt~0 2)), 3809#(not (= ~__unbuffered_cnt~0 1)), 3810#(<= ~__unbuffered_cnt~0 0), 3807#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-22 00:36:05,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 00:36:05,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:05,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 00:36:05,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-22 00:36:05,332 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 10 states. [2020-10-22 00:36:05,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:05,416 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-10-22 00:36:05,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 00:36:05,416 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-10-22 00:36:05,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:05,417 INFO L225 Difference]: With dead ends: 92 [2020-10-22 00:36:05,417 INFO L226 Difference]: Without dead ends: 36 [2020-10-22 00:36:05,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-22 00:36:05,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-22 00:36:05,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-22 00:36:05,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-22 00:36:05,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-22 00:36:05,420 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-22 00:36:05,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:05,420 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-22 00:36:05,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 00:36:05,420 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-22 00:36:05,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 00:36:05,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:05,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:05,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 00:36:05,422 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:05,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:05,422 INFO L82 PathProgramCache]: Analyzing trace with hash 2097589764, now seen corresponding path program 1 times [2020-10-22 00:36:05,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:05,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917521538] [2020-10-22 00:36:05,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:05,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:05,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917521538] [2020-10-22 00:36:05,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:05,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:36:05,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1507519762] [2020-10-22 00:36:05,456 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:05,458 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:05,466 INFO L252 McrAutomatonBuilder]: Finished intersection with 54 states and 97 transitions. [2020-10-22 00:36:05,466 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:05,570 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:05,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:36:05,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:05,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:36:05,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:36:05,572 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-22 00:36:05,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:05,586 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-22 00:36:05,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 00:36:05,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-22 00:36:05,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:05,586 INFO L225 Difference]: With dead ends: 35 [2020-10-22 00:36:05,586 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 00:36:05,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:36:05,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 00:36:05,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 00:36:05,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 00:36:05,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 00:36:05,588 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-22 00:36:05,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:05,588 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 00:36:05,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:36:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 00:36:05,588 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 00:36:05,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 00:36:05,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 12:36:05 BasicIcfg [2020-10-22 00:36:05,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 00:36:05,594 INFO L168 Benchmark]: Toolchain (without parser) took 5550.54 ms. Allocated memory was 136.3 MB in the beginning and 310.9 MB in the end (delta: 174.6 MB). Free memory was 97.7 MB in the beginning and 242.2 MB in the end (delta: -144.6 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:05,595 INFO L168 Benchmark]: CDTParser took 3.26 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-22 00:36:05,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.08 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 96.8 MB in the beginning and 154.6 MB in the end (delta: -57.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:05,597 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.51 ms. Allocated memory is still 198.7 MB. Free memory was 154.6 MB in the beginning and 152.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:05,597 INFO L168 Benchmark]: Boogie Preprocessor took 26.34 ms. Allocated memory is still 198.7 MB. Free memory was 152.3 MB in the beginning and 150.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:05,598 INFO L168 Benchmark]: RCFGBuilder took 480.00 ms. Allocated memory is still 198.7 MB. Free memory was 150.2 MB in the beginning and 127.0 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:05,599 INFO L168 Benchmark]: TraceAbstraction took 4233.04 ms. Allocated memory was 198.7 MB in the beginning and 310.9 MB in the end (delta: 112.2 MB). Free memory was 126.3 MB in the beginning and 242.2 MB in the end (delta: -116.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-22 00:36:05,603 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.26 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 756.08 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 96.8 MB in the beginning and 154.6 MB in the end (delta: -57.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.51 ms. Allocated memory is still 198.7 MB. Free memory was 154.6 MB in the beginning and 152.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.34 ms. Allocated memory is still 198.7 MB. Free memory was 152.3 MB in the beginning and 150.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 480.00 ms. Allocated memory is still 198.7 MB. Free memory was 150.2 MB in the beginning and 127.0 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4233.04 ms. Allocated memory was 198.7 MB in the beginning and 310.9 MB in the end (delta: 112.2 MB). Free memory was 126.3 MB in the beginning and 242.2 MB in the end (delta: -116.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 780 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 42 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2774 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 150 SDtfs, 136 SDslu, 180 SDs, 0 SdLazy, 106 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 2736 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...