/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-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 02:21:48,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 02:21:48,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 02:21:48,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 02:21:48,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 02:21:48,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 02:21:48,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 02:21:48,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 02:21:48,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 02:21:48,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 02:21:48,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 02:21:48,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 02:21:48,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 02:21:48,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 02:21:48,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 02:21:48,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 02:21:48,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 02:21:48,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 02:21:48,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 02:21:48,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 02:21:48,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 02:21:48,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 02:21:48,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 02:21:48,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 02:21:48,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-22 02:21:48,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 02:21:48,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 02:21:48,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 02:21:48,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 02:21:48,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 02:21:48,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 02:21:48,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 02:21:48,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 02:21:48,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 02:21:48,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 02:21:48,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 02:21:48,780 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-SP.epf [2020-10-22 02:21:48,815 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 02:21:48,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 02:21:48,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 02:21:48,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 02:21:48,820 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 02:21:48,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 02:21:48,821 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 02:21:48,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 02:21:48,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 02:21:48,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 02:21:48,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 02:21:48,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 02:21:48,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 02:21:48,823 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 02:21:48,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 02:21:48,824 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 02:21:48,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 02:21:48,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 02:21:48,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 02:21:48,825 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 02:21:48,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 02:21:48,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:21:48,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 02:21:48,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 02:21:48,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 02:21:48,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 02:21:48,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 02:21:48,826 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 02:21:48,826 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 02:21:48,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 02:21:48,827 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 02:21:49,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 02:21:49,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 02:21:49,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 02:21:49,130 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 02:21:49,130 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 02:21:49,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-10-22 02:21:49,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbc3e418b/09a25b43a4094b1b99561f94d4831adc/FLAGb36e05f72 [2020-10-22 02:21:49,746 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 02:21:49,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-10-22 02:21:49,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbc3e418b/09a25b43a4094b1b99561f94d4831adc/FLAGb36e05f72 [2020-10-22 02:21:50,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbc3e418b/09a25b43a4094b1b99561f94d4831adc [2020-10-22 02:21:50,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 02:21:50,050 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 02:21:50,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 02:21:50,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 02:21:50,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 02:21:50,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:21:50" (1/1) ... [2020-10-22 02:21:50,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2561c30c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:21:50, skipping insertion in model container [2020-10-22 02:21:50,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:21:50" (1/1) ... [2020-10-22 02:21:50,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 02:21:50,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 02:21:50,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:21:50,659 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 02:21:50,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:21:50,805 INFO L208 MainTranslator]: Completed translation [2020-10-22 02:21:50,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:21:50 WrapperNode [2020-10-22 02:21:50,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 02:21:50,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 02:21:50,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 02:21:50,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 02:21:50,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:21:50" (1/1) ... [2020-10-22 02:21:50,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:21:50" (1/1) ... [2020-10-22 02:21:50,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 02:21:50,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 02:21:50,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 02:21:50,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 02:21:50,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:21:50" (1/1) ... [2020-10-22 02:21:50,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:21:50" (1/1) ... [2020-10-22 02:21:50,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:21:50" (1/1) ... [2020-10-22 02:21:50,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:21:50" (1/1) ... [2020-10-22 02:21:50,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:21:50" (1/1) ... [2020-10-22 02:21:50,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:21:50" (1/1) ... [2020-10-22 02:21:50,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:21:50" (1/1) ... [2020-10-22 02:21:50,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 02:21:50,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 02:21:50,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 02:21:50,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 02:21:50,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:21:50" (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 02:21:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 02:21:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 02:21:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 02:21:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 02:21:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 02:21:50,971 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 02:21:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 02:21:50,972 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 02:21:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 02:21:50,973 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 02:21:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 02:21:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 02:21:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 02:21:50,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 02:21:50,976 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 02:21:51,404 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 02:21:51,404 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 02:21:51,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:21:51 BoogieIcfgContainer [2020-10-22 02:21:51,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 02:21:51,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 02:21:51,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 02:21:51,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 02:21:51,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:21:50" (1/3) ... [2020-10-22 02:21:51,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7624523b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:21:51, skipping insertion in model container [2020-10-22 02:21:51,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:21:50" (2/3) ... [2020-10-22 02:21:51,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7624523b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:21:51, skipping insertion in model container [2020-10-22 02:21:51,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:21:51" (3/3) ... [2020-10-22 02:21:51,417 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.opt.i [2020-10-22 02:21:51,430 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 02:21:51,431 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 02:21:51,440 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 02:21:51,441 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 02:21:51,472 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,473 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,473 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,474 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,474 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,474 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,475 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,475 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,476 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,476 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,476 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,477 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,477 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,477 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,478 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,478 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,478 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,479 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,483 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,483 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,483 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,484 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,493 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,493 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,494 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,494 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,497 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,498 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,498 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,498 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:21:51,502 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:21:51,517 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-22 02:21:51,539 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:21:51,539 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:21:51,539 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:21:51,539 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:21:51,540 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:21:51,540 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:21:51,540 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:21:51,540 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:21:51,554 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:21:51,555 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 02:21:51,558 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 02:21:51,560 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-22 02:21:51,610 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-22 02:21:51,610 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 02:21:51,615 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 62 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 02:21:51,618 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-22 02:21:53,319 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-22 02:21:53,525 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-10-22 02:21:53,658 INFO L131 LiptonReduction]: Checked pairs total: 2833 [2020-10-22 02:21:53,659 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-10-22 02:21:53,665 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-22 02:21:53,692 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-22 02:21:53,694 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-22 02:21:53,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 02:21:53,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:21:53,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:21:53,704 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:21:53,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:21:53,710 INFO L82 PathProgramCache]: Analyzing trace with hash -618309236, now seen corresponding path program 1 times [2020-10-22 02:21:53,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:21:53,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550748427] [2020-10-22 02:21:53,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:21:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:21:53,954 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 02:21:53,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550748427] [2020-10-22 02:21:53,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:21:53,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:21:53,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1692835784] [2020-10-22 02:21:53,958 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:21:53,961 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:21:53,981 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 02:21:53,981 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:21:53,986 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:21:53,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:21:53,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:21:54,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:21:54,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:21:54,005 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-22 02:21:54,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:21:54,050 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-10-22 02:21:54,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:21:54,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-22 02:21:54,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:21:54,068 INFO L225 Difference]: With dead ends: 294 [2020-10-22 02:21:54,068 INFO L226 Difference]: Without dead ends: 230 [2020-10-22 02:21:54,070 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 02:21:54,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-22 02:21:54,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-10-22 02:21:54,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-22 02:21:54,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-10-22 02:21:54,194 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-10-22 02:21:54,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:21:54,196 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-10-22 02:21:54,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:21:54,196 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-10-22 02:21:54,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 02:21:54,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:21:54,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:21:54,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 02:21:54,199 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:21:54,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:21:54,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2017712009, now seen corresponding path program 1 times [2020-10-22 02:21:54,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:21:54,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120899198] [2020-10-22 02:21:54,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:21:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:21:54,299 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 02:21:54,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120899198] [2020-10-22 02:21:54,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:21:54,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:21:54,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [788705751] [2020-10-22 02:21:54,300 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:21:54,301 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:21:54,304 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-10-22 02:21:54,304 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:21:54,328 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:21:54,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:21:54,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:21:54,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:21:54,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:21:54,331 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-10-22 02:21:54,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:21:54,357 INFO L93 Difference]: Finished difference Result 326 states and 861 transitions. [2020-10-22 02:21:54,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:21:54,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-22 02:21:54,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:21:54,361 INFO L225 Difference]: With dead ends: 326 [2020-10-22 02:21:54,361 INFO L226 Difference]: Without dead ends: 254 [2020-10-22 02:21:54,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 02:21:54,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-22 02:21:54,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 218. [2020-10-22 02:21:54,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-22 02:21:54,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 576 transitions. [2020-10-22 02:21:54,399 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 576 transitions. Word has length 9 [2020-10-22 02:21:54,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:21:54,400 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 576 transitions. [2020-10-22 02:21:54,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:21:54,400 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 576 transitions. [2020-10-22 02:21:54,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 02:21:54,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:21:54,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:21:54,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 02:21:54,402 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:21:54,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:21:54,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1987739380, now seen corresponding path program 1 times [2020-10-22 02:21:54,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:21:54,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149012729] [2020-10-22 02:21:54,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:21:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:21:54,453 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 02:21:54,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149012729] [2020-10-22 02:21:54,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:21:54,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:21:54,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1499746484] [2020-10-22 02:21:54,454 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:21:54,455 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:21:54,457 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-10-22 02:21:54,457 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:21:54,467 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:21:54,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:21:54,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:21:54,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:21:54,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:21:54,469 INFO L87 Difference]: Start difference. First operand 218 states and 576 transitions. Second operand 3 states. [2020-10-22 02:21:54,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:21:54,481 INFO L93 Difference]: Finished difference Result 214 states and 561 transitions. [2020-10-22 02:21:54,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:21:54,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-22 02:21:54,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:21:54,485 INFO L225 Difference]: With dead ends: 214 [2020-10-22 02:21:54,485 INFO L226 Difference]: Without dead ends: 214 [2020-10-22 02:21:54,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:21:54,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-22 02:21:54,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-10-22 02:21:54,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-22 02:21:54,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 561 transitions. [2020-10-22 02:21:54,499 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 561 transitions. Word has length 9 [2020-10-22 02:21:54,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:21:54,499 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 561 transitions. [2020-10-22 02:21:54,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:21:54,500 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 561 transitions. [2020-10-22 02:21:54,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 02:21:54,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:21:54,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:21:54,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 02:21:54,502 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:21:54,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:21:54,502 INFO L82 PathProgramCache]: Analyzing trace with hash -380513842, now seen corresponding path program 1 times [2020-10-22 02:21:54,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:21:54,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357481741] [2020-10-22 02:21:54,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:21:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:21:54,554 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 02:21:54,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357481741] [2020-10-22 02:21:54,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:21:54,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:21:54,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1404245615] [2020-10-22 02:21:54,555 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:21:54,556 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:21:54,560 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-10-22 02:21:54,560 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:21:54,668 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:21:54,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:21:54,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:21:54,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:21:54,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:21:54,670 INFO L87 Difference]: Start difference. First operand 214 states and 561 transitions. Second operand 3 states. [2020-10-22 02:21:54,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:21:54,676 INFO L93 Difference]: Finished difference Result 192 states and 487 transitions. [2020-10-22 02:21:54,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:21:54,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-22 02:21:54,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:21:54,679 INFO L225 Difference]: With dead ends: 192 [2020-10-22 02:21:54,679 INFO L226 Difference]: Without dead ends: 168 [2020-10-22 02:21:54,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 02:21:54,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-22 02:21:54,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-10-22 02:21:54,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-22 02:21:54,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 433 transitions. [2020-10-22 02:21:54,688 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 433 transitions. Word has length 10 [2020-10-22 02:21:54,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:21:54,689 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 433 transitions. [2020-10-22 02:21:54,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:21:54,689 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 433 transitions. [2020-10-22 02:21:54,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 02:21:54,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:21:54,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:21:54,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 02:21:54,691 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:21:54,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:21:54,692 INFO L82 PathProgramCache]: Analyzing trace with hash 658800567, now seen corresponding path program 1 times [2020-10-22 02:21:54,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:21:54,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756470137] [2020-10-22 02:21:54,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:21:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:21:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:21:54,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756470137] [2020-10-22 02:21:54,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:21:54,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:21:54,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [551715931] [2020-10-22 02:21:54,740 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:21:54,741 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:21:54,746 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 61 transitions. [2020-10-22 02:21:54,746 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:21:54,818 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:21:54,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:21:54,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:21:54,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:21:54,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:21:54,820 INFO L87 Difference]: Start difference. First operand 168 states and 433 transitions. Second operand 4 states. [2020-10-22 02:21:54,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:21:54,845 INFO L93 Difference]: Finished difference Result 216 states and 549 transitions. [2020-10-22 02:21:54,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:21:54,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-22 02:21:54,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:21:54,847 INFO L225 Difference]: With dead ends: 216 [2020-10-22 02:21:54,847 INFO L226 Difference]: Without dead ends: 144 [2020-10-22 02:21:54,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 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 02:21:54,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-22 02:21:54,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-22 02:21:54,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-22 02:21:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-10-22 02:21:54,854 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 12 [2020-10-22 02:21:54,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:21:54,855 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-10-22 02:21:54,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:21:54,855 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-10-22 02:21:54,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 02:21:54,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:21:54,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:21:54,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 02:21:54,857 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:21:54,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:21:54,857 INFO L82 PathProgramCache]: Analyzing trace with hash 659418087, now seen corresponding path program 2 times [2020-10-22 02:21:54,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:21:54,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396859728] [2020-10-22 02:21:54,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:21:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:21:54,973 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 02:21:54,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396859728] [2020-10-22 02:21:54,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:21:54,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:21:54,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1379781070] [2020-10-22 02:21:54,975 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:21:54,977 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:21:54,982 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 71 transitions. [2020-10-22 02:21:54,982 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:21:54,999 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 02:21:55,000 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 02:21:55,016 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 02:21:55,016 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 02:21:55,066 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 02:21:55,067 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 02:21:55,267 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3897#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-22 02:21:55,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:21:55,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:21:55,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:21:55,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:21:55,268 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 5 states. [2020-10-22 02:21:55,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:21:55,309 INFO L93 Difference]: Finished difference Result 137 states and 312 transitions. [2020-10-22 02:21:55,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:21:55,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-22 02:21:55,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:21:55,310 INFO L225 Difference]: With dead ends: 137 [2020-10-22 02:21:55,310 INFO L226 Difference]: Without dead ends: 97 [2020-10-22 02:21:55,311 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 02:21:55,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-22 02:21:55,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-22 02:21:55,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-22 02:21:55,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-10-22 02:21:55,315 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-10-22 02:21:55,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:21:55,315 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-10-22 02:21:55,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:21:55,315 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-10-22 02:21:55,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-22 02:21:55,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:21:55,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:21:55,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 02:21:55,317 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:21:55,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:21:55,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1390045438, now seen corresponding path program 1 times [2020-10-22 02:21:55,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:21:55,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376188269] [2020-10-22 02:21:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:21:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:21:55,348 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 02:21:55,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376188269] [2020-10-22 02:21:55,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:21:55,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:21:55,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1478281595] [2020-10-22 02:21:55,350 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:21:55,351 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:21:55,354 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 32 transitions. [2020-10-22 02:21:55,354 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:21:55,367 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:21:55,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:21:55,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:21:55,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:21:55,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:21:55,369 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-10-22 02:21:55,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:21:55,378 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-10-22 02:21:55,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:21:55,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-22 02:21:55,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:21:55,380 INFO L225 Difference]: With dead ends: 115 [2020-10-22 02:21:55,380 INFO L226 Difference]: Without dead ends: 98 [2020-10-22 02:21:55,380 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 02:21:55,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-22 02:21:55,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-22 02:21:55,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-22 02:21:55,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-10-22 02:21:55,385 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-10-22 02:21:55,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:21:55,385 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-10-22 02:21:55,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:21:55,385 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-10-22 02:21:55,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 02:21:55,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:21:55,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:21:55,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 02:21:55,387 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:21:55,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:21:55,387 INFO L82 PathProgramCache]: Analyzing trace with hash 836357957, now seen corresponding path program 1 times [2020-10-22 02:21:55,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:21:55,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151641293] [2020-10-22 02:21:55,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:21:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:21:55,445 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 02:21:55,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151641293] [2020-10-22 02:21:55,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:21:55,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:21:55,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1890866237] [2020-10-22 02:21:55,447 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:21:55,449 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:21:55,471 INFO L252 McrAutomatonBuilder]: Finished intersection with 36 states and 54 transitions. [2020-10-22 02:21:55,471 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:21:55,744 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:21:55,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 02:21:55,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:21:55,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 02:21:55,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-22 02:21:55,746 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-10-22 02:21:55,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:21:55,805 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-10-22 02:21:55,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 02:21:55,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-22 02:21:55,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:21:55,806 INFO L225 Difference]: With dead ends: 92 [2020-10-22 02:21:55,806 INFO L226 Difference]: Without dead ends: 36 [2020-10-22 02:21:55,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-22 02:21:55,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-22 02:21:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-22 02:21:55,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-22 02:21:55,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-22 02:21:55,808 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-22 02:21:55,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:21:55,808 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-22 02:21:55,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 02:21:55,809 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-22 02:21:55,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 02:21:55,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:21:55,809 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 02:21:55,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 02:21:55,810 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:21:55,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:21:55,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1235317196, now seen corresponding path program 1 times [2020-10-22 02:21:55,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:21:55,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729344953] [2020-10-22 02:21:55,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:21:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:21:55,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:21:55,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729344953] [2020-10-22 02:21:55,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:21:55,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:21:55,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1301606416] [2020-10-22 02:21:55,847 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:21:55,849 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:21:55,856 INFO L252 McrAutomatonBuilder]: Finished intersection with 54 states and 89 transitions. [2020-10-22 02:21:55,857 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:21:55,918 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:21:55,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:21:55,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:21:55,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:21:55,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:21:55,919 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-22 02:21:55,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:21:55,934 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-22 02:21:55,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:21:55,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-22 02:21:55,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:21:55,935 INFO L225 Difference]: With dead ends: 35 [2020-10-22 02:21:55,935 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 02:21:55,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 02:21:55,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 02:21:55,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 02:21:55,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 02:21:55,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 02:21:55,937 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-22 02:21:55,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:21:55,937 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 02:21:55,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:21:55,937 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 02:21:55,937 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 02:21:55,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-22 02:21:55,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:21:55 BasicIcfg [2020-10-22 02:21:55,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 02:21:55,944 INFO L168 Benchmark]: Toolchain (without parser) took 5898.42 ms. Allocated memory was 137.9 MB in the beginning and 293.6 MB in the end (delta: 155.7 MB). Free memory was 98.9 MB in the beginning and 202.8 MB in the end (delta: -103.9 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2020-10-22 02:21:55,944 INFO L168 Benchmark]: CDTParser took 3.07 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-22 02:21:55,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.48 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 98.0 MB in the beginning and 155.5 MB in the end (delta: -57.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-10-22 02:21:55,946 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.74 ms. Allocated memory is still 201.9 MB. Free memory was 155.5 MB in the beginning and 153.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-22 02:21:55,947 INFO L168 Benchmark]: Boogie Preprocessor took 28.32 ms. Allocated memory is still 201.9 MB. Free memory was 153.4 MB in the beginning and 152.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-22 02:21:55,947 INFO L168 Benchmark]: RCFGBuilder took 518.57 ms. Allocated memory is still 201.9 MB. Free memory was 152.0 MB in the beginning and 127.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-10-22 02:21:55,948 INFO L168 Benchmark]: TraceAbstraction took 4532.94 ms. Allocated memory was 201.9 MB in the beginning and 293.6 MB in the end (delta: 91.8 MB). Free memory was 127.0 MB in the beginning and 202.8 MB in the end (delta: -75.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-10-22 02:21:55,952 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.07 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 755.48 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 98.0 MB in the beginning and 155.5 MB in the end (delta: -57.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.74 ms. Allocated memory is still 201.9 MB. Free memory was 155.5 MB in the beginning and 153.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.32 ms. Allocated memory is still 201.9 MB. Free memory was 153.4 MB in the beginning and 152.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 518.57 ms. Allocated memory is still 201.9 MB. Free memory was 152.0 MB in the beginning and 127.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4532.94 ms. Allocated memory was 201.9 MB in the beginning and 293.6 MB in the end (delta: 91.8 MB). Free memory was 127.0 MB in the beginning and 202.8 MB in the end (delta: -75.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 771 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 48 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 71 TotalNumberOfCompositions, 2833 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: 4.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 165 SDtfs, 111 SDslu, 143 SDs, 0 SdLazy, 74 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 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, 9 MinimizatonAttempts, 38 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 2607 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...