/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-ext/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 15:11:20,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 15:11:20,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 15:11:20,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 15:11:20,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 15:11:20,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 15:11:20,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 15:11:20,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 15:11:20,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 15:11:20,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 15:11:20,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 15:11:20,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 15:11:20,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 15:11:20,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 15:11:20,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 15:11:20,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 15:11:20,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 15:11:20,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 15:11:20,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 15:11:20,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 15:11:20,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 15:11:20,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 15:11:20,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 15:11:20,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 15:11:20,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-17 15:11:20,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 15:11:20,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 15:11:20,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 15:11:20,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 15:11:20,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 15:11:20,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 15:11:20,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 15:11:20,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 15:11:20,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 15:11:20,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 15:11:20,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 15:11:20,613 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 [2020-09-17 15:11:20,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 15:11:20,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 15:11:20,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 15:11:20,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 15:11:20,655 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 15:11:20,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 15:11:20,655 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 15:11:20,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 15:11:20,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 15:11:20,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 15:11:20,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 15:11:20,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 15:11:20,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 15:11:20,657 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 15:11:20,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 15:11:20,657 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 15:11:20,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 15:11:20,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 15:11:20,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 15:11:20,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 15:11:20,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 15:11:20,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 15:11:20,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 15:11:20,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-17 15:11:20,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 15:11:20,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 15:11:20,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 15:11:20,660 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-17 15:11:20,660 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-17 15:11:20,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 15:11:20,660 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-17 15:11:21,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 15:11:21,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 15:11:21,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 15:11:21,151 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 15:11:21,152 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 15:11:21,154 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2020-09-17 15:11:21,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47aa627a6/5421dbff9aea417aa7bcdc63946808d9/FLAGe56d0f83f [2020-09-17 15:11:21,918 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 15:11:21,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2020-09-17 15:11:21,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47aa627a6/5421dbff9aea417aa7bcdc63946808d9/FLAGe56d0f83f [2020-09-17 15:11:22,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47aa627a6/5421dbff9aea417aa7bcdc63946808d9 [2020-09-17 15:11:22,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 15:11:22,169 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 15:11:22,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 15:11:22,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 15:11:22,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 15:11:22,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 03:11:22" (1/1) ... [2020-09-17 15:11:22,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b25dc4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:22, skipping insertion in model container [2020-09-17 15:11:22,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 03:11:22" (1/1) ... [2020-09-17 15:11:22,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 15:11:22,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 15:11:22,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 15:11:22,801 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 15:11:22,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 15:11:22,942 INFO L208 MainTranslator]: Completed translation [2020-09-17 15:11:22,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:22 WrapperNode [2020-09-17 15:11:22,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 15:11:22,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 15:11:22,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 15:11:22,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 15:11:22,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:22" (1/1) ... [2020-09-17 15:11:22,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:22" (1/1) ... [2020-09-17 15:11:23,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 15:11:23,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 15:11:23,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 15:11:23,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 15:11:23,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:22" (1/1) ... [2020-09-17 15:11:23,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:22" (1/1) ... [2020-09-17 15:11:23,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:22" (1/1) ... [2020-09-17 15:11:23,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:22" (1/1) ... [2020-09-17 15:11:23,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:22" (1/1) ... [2020-09-17 15:11:23,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:22" (1/1) ... [2020-09-17 15:11:23,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:22" (1/1) ... [2020-09-17 15:11:23,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 15:11:23,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 15:11:23,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 15:11:23,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 15:11:23,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:22" (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 [2020-09-17 15:11:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-17 15:11:23,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-17 15:11:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 15:11:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 15:11:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 15:11:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 15:11:23,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 15:11:23,153 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 15:11:23,942 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 15:11:23,943 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-09-17 15:11:23,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 03:11:23 BoogieIcfgContainer [2020-09-17 15:11:23,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 15:11:23,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 15:11:23,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 15:11:23,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 15:11:23,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 03:11:22" (1/3) ... [2020-09-17 15:11:23,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aefbf75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 03:11:23, skipping insertion in model container [2020-09-17 15:11:23,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:22" (2/3) ... [2020-09-17 15:11:23,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aefbf75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 03:11:23, skipping insertion in model container [2020-09-17 15:11:23,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 03:11:23" (3/3) ... [2020-09-17 15:11:23,958 INFO L109 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2020-09-17 15:11:23,971 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 15:11:23,971 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-17 15:11:23,982 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-17 15:11:23,984 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 15:11:24,008 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,009 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,009 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,009 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,009 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,010 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,010 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,010 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,011 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,011 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,011 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,011 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,012 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,012 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,017 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,018 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,018 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,018 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,019 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,019 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,019 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,019 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,020 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:24,047 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-17 15:11:24,075 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 15:11:24,075 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 15:11:24,076 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-17 15:11:24,076 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-17 15:11:24,076 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 15:11:24,076 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 15:11:24,076 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 15:11:24,077 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 15:11:24,094 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 43 transitions, 91 flow [2020-09-17 15:11:24,097 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 45 places, 43 transitions, 91 flow [2020-09-17 15:11:24,135 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2020-09-17 15:11:24,135 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 15:11:24,140 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 42 events. 2/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2020-09-17 15:11:24,142 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 45 places, 43 transitions, 91 flow [2020-09-17 15:11:24,155 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2020-09-17 15:11:24,155 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 15:11:24,156 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 42 events. 2/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2020-09-17 15:11:24,158 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 378 [2020-09-17 15:11:24,159 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-17 15:11:25,001 INFO L206 etLargeBlockEncoding]: Checked pairs total: 911 [2020-09-17 15:11:25,001 INFO L214 etLargeBlockEncoding]: Total number of compositions: 28 [2020-09-17 15:11:25,006 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 16 transitions, 37 flow [2020-09-17 15:11:25,019 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-09-17 15:11:25,021 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-17 15:11:25,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-09-17 15:11:25,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 15:11:25,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-09-17 15:11:25,032 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 15:11:25,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 15:11:25,039 INFO L82 PathProgramCache]: Analyzing trace with hash 329343693, now seen corresponding path program 1 times [2020-09-17 15:11:25,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 15:11:25,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667007289] [2020-09-17 15:11:25,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 15:11:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 15:11:25,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 15:11:25,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667007289] [2020-09-17 15:11:25,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 15:11:25,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 15:11:25,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [459799623] [2020-09-17 15:11:25,288 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 15:11:25,291 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 15:11:25,308 INFO L274 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-09-17 15:11:25,308 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 15:11:25,310 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 15:11:25,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 15:11:25,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 15:11:25,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 15:11:25,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 15:11:25,333 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-09-17 15:11:25,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 15:11:25,363 INFO L93 Difference]: Finished difference Result 34 states and 59 transitions. [2020-09-17 15:11:25,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 15:11:25,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-09-17 15:11:25,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 15:11:25,377 INFO L225 Difference]: With dead ends: 34 [2020-09-17 15:11:25,378 INFO L226 Difference]: Without dead ends: 32 [2020-09-17 15:11:25,380 INFO L675 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 [2020-09-17 15:11:25,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-17 15:11:25,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-17 15:11:25,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-17 15:11:25,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 56 transitions. [2020-09-17 15:11:25,429 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 56 transitions. Word has length 5 [2020-09-17 15:11:25,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 15:11:25,429 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 56 transitions. [2020-09-17 15:11:25,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 15:11:25,430 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 56 transitions. [2020-09-17 15:11:25,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-17 15:11:25,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 15:11:25,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-17 15:11:25,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 15:11:25,431 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 15:11:25,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 15:11:25,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1321198047, now seen corresponding path program 1 times [2020-09-17 15:11:25,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 15:11:25,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682709213] [2020-09-17 15:11:25,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 15:11:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 15:11:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 15:11:25,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682709213] [2020-09-17 15:11:25,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 15:11:25,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 15:11:25,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [502351423] [2020-09-17 15:11:25,500 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 15:11:25,501 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 15:11:25,506 INFO L274 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-09-17 15:11:25,506 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 15:11:25,508 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 15:11:25,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 15:11:25,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 15:11:25,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 15:11:25,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 15:11:25,511 INFO L87 Difference]: Start difference. First operand 32 states and 56 transitions. Second operand 3 states. [2020-09-17 15:11:25,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 15:11:25,524 INFO L93 Difference]: Finished difference Result 27 states and 45 transitions. [2020-09-17 15:11:25,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 15:11:25,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-09-17 15:11:25,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 15:11:25,527 INFO L225 Difference]: With dead ends: 27 [2020-09-17 15:11:25,527 INFO L226 Difference]: Without dead ends: 24 [2020-09-17 15:11:25,528 INFO L675 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 [2020-09-17 15:11:25,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-17 15:11:25,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-17 15:11:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-17 15:11:25,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 37 transitions. [2020-09-17 15:11:25,534 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 37 transitions. Word has length 7 [2020-09-17 15:11:25,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 15:11:25,534 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 37 transitions. [2020-09-17 15:11:25,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 15:11:25,535 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 37 transitions. [2020-09-17 15:11:25,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 15:11:25,535 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 15:11:25,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 15:11:25,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 15:11:25,536 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 15:11:25,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 15:11:25,537 INFO L82 PathProgramCache]: Analyzing trace with hash -845321639, now seen corresponding path program 1 times [2020-09-17 15:11:25,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 15:11:25,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759948266] [2020-09-17 15:11:25,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 15:11:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 15:11:25,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 15:11:25,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759948266] [2020-09-17 15:11:25,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 15:11:25,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 15:11:25,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1253825940] [2020-09-17 15:11:25,678 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 15:11:25,679 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 15:11:25,682 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-09-17 15:11:25,682 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 15:11:25,692 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 15:11:25,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 15:11:25,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 15:11:25,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 15:11:25,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 15:11:25,694 INFO L87 Difference]: Start difference. First operand 24 states and 37 transitions. Second operand 4 states. [2020-09-17 15:11:25,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 15:11:25,725 INFO L93 Difference]: Finished difference Result 18 states and 25 transitions. [2020-09-17 15:11:25,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 15:11:25,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-17 15:11:25,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 15:11:25,727 INFO L225 Difference]: With dead ends: 18 [2020-09-17 15:11:25,727 INFO L226 Difference]: Without dead ends: 18 [2020-09-17 15:11:25,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 15:11:25,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-09-17 15:11:25,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-09-17 15:11:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-09-17 15:11:25,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2020-09-17 15:11:25,731 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 9 [2020-09-17 15:11:25,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 15:11:25,732 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-09-17 15:11:25,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 15:11:25,732 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2020-09-17 15:11:25,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-17 15:11:25,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 15:11:25,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 15:11:25,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 15:11:25,734 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 15:11:25,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 15:11:25,734 INFO L82 PathProgramCache]: Analyzing trace with hash -231891374, now seen corresponding path program 1 times [2020-09-17 15:11:25,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 15:11:25,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751876759] [2020-09-17 15:11:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 15:11:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 15:11:25,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 15:11:25,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751876759] [2020-09-17 15:11:25,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 15:11:25,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 15:11:25,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [627228495] [2020-09-17 15:11:25,841 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 15:11:25,842 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 15:11:25,845 INFO L274 McrAutomatonBuilder]: Finished intersection with 16 states and 19 transitions. [2020-09-17 15:11:25,845 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 15:11:25,861 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 15:11:25,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 15:11:25,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 15:11:25,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 15:11:25,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 15:11:25,862 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 4 states. [2020-09-17 15:11:25,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 15:11:25,868 INFO L93 Difference]: Finished difference Result 17 states and 24 transitions. [2020-09-17 15:11:25,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 15:11:25,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-17 15:11:25,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 15:11:25,869 INFO L225 Difference]: With dead ends: 17 [2020-09-17 15:11:25,870 INFO L226 Difference]: Without dead ends: 0 [2020-09-17 15:11:25,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 15:11:25,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-17 15:11:25,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-17 15:11:25,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-17 15:11:25,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-17 15:11:25,871 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-09-17 15:11:25,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 15:11:25,871 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-17 15:11:25,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 15:11:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-17 15:11:25,872 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-17 15:11:25,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 15:11:25,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 03:11:25 BasicIcfg [2020-09-17 15:11:25,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-17 15:11:25,880 INFO L168 Benchmark]: Toolchain (without parser) took 3713.12 ms. Allocated memory was 139.5 MB in the beginning and 249.0 MB in the end (delta: 109.6 MB). Free memory was 101.3 MB in the beginning and 205.2 MB in the end (delta: -103.9 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2020-09-17 15:11:25,881 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-17 15:11:25,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 772.42 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 161.2 MB in the end (delta: -60.4 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-09-17 15:11:25,883 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.75 ms. Allocated memory is still 202.9 MB. Free memory was 161.2 MB in the beginning and 159.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-17 15:11:25,884 INFO L168 Benchmark]: Boogie Preprocessor took 43.94 ms. Allocated memory is still 202.9 MB. Free memory was 159.2 MB in the beginning and 157.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-17 15:11:25,885 INFO L168 Benchmark]: RCFGBuilder took 887.98 ms. Allocated memory is still 202.9 MB. Free memory was 157.2 MB in the beginning and 110.3 MB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. [2020-09-17 15:11:25,886 INFO L168 Benchmark]: TraceAbstraction took 1927.08 ms. Allocated memory was 202.9 MB in the beginning and 249.0 MB in the end (delta: 46.1 MB). Free memory was 109.3 MB in the beginning and 205.2 MB in the end (delta: -95.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-17 15:11:25,891 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 772.42 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 161.2 MB in the end (delta: -60.4 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 71.75 ms. Allocated memory is still 202.9 MB. Free memory was 161.2 MB in the beginning and 159.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.94 ms. Allocated memory is still 202.9 MB. Free memory was 159.2 MB in the beginning and 157.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 887.98 ms. Allocated memory is still 202.9 MB. Free memory was 157.2 MB in the beginning and 110.3 MB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1927.08 ms. Allocated memory was 202.9 MB in the beginning and 249.0 MB in the end (delta: 46.1 MB). Free memory was 109.3 MB in the beginning and 205.2 MB in the end (delta: -95.9 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 LbeTime: 0.9s, 45 ProgramPointsBefore, 18 ProgramPointsAfterwards, 43 TransitionsBefore, 16 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 6 FixpointIterations, 10 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 183 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 911 CheckedPairsTotal, 28 TotalNumberOfCompositions - PositiveResult [Line: 696]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 710]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 42 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 46 SDtfs, 19 SDslu, 29 SDs, 0 SdLazy, 22 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 844 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...