/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:20:55,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:20:55,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:20:55,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:20:55,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:20:55,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:20:55,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:20:55,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:20:55,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:20:55,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:20:55,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:20:55,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:20:55,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:20:55,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:20:55,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:20:55,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:20:55,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:20:55,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:20:55,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:20:55,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:20:55,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:20:55,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:20:55,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:20:55,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:20:55,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 23:20:55,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 23:20:55,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 23:20:55,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 23:20:55,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 23:20:55,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 23:20:55,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:20:55,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:20:55,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:20:55,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:20:55,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:20:55,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:20:55,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:20:55,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:20:55,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:20:55,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:20:55,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:20:55,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-11 23:20:55,765 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:20:55,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:20:55,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:20:55,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:20:55,770 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:20:55,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:20:55,770 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:20:55,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:20:55,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:20:55,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:20:55,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:20:55,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:20:55,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:20:55,771 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:20:55,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:20:55,772 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:20:55,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:20:55,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:20:55,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:20:55,773 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:20:55,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:20:55,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:20:55,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:20:55,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:20:55,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:20:55,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:20:55,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:20:55,774 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:20:55,775 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:20:55,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:20:55,775 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:20:56,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:20:56,241 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:20:56,246 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:20:56,248 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:20:56,249 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:20:56,250 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2020-09-11 23:20:56,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ce73285d/8f465d69981944d59daf391c59f9d458/FLAGa0b628752 [2020-09-11 23:20:56,981 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:20:56,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2020-09-11 23:20:57,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ce73285d/8f465d69981944d59daf391c59f9d458/FLAGa0b628752 [2020-09-11 23:20:57,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ce73285d/8f465d69981944d59daf391c59f9d458 [2020-09-11 23:20:57,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:20:57,241 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:20:57,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:20:57,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:20:57,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:20:57,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:20:57" (1/1) ... [2020-09-11 23:20:57,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14382dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:20:57, skipping insertion in model container [2020-09-11 23:20:57,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:20:57" (1/1) ... [2020-09-11 23:20:57,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:20:57,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:20:57,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:20:57,918 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:20:57,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:20:58,067 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:20:58,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:20:58 WrapperNode [2020-09-11 23:20:58,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:20:58,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:20:58,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:20:58,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:20:58,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:20:58" (1/1) ... [2020-09-11 23:20:58,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:20:58" (1/1) ... [2020-09-11 23:20:58,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:20:58,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:20:58,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:20:58,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:20:58,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:20:58" (1/1) ... [2020-09-11 23:20:58,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:20:58" (1/1) ... [2020-09-11 23:20:58,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:20:58" (1/1) ... [2020-09-11 23:20:58,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:20:58" (1/1) ... [2020-09-11 23:20:58,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:20:58" (1/1) ... [2020-09-11 23:20:58,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:20:58" (1/1) ... [2020-09-11 23:20:58,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:20:58" (1/1) ... [2020-09-11 23:20:58,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:20:58,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:20:58,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:20:58,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:20:58,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:20:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 23:20:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:20:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:20:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:20:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:20:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:20:58,259 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:20:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:20:58,259 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:20:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:20:58,260 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:20:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:20:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:20:58,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:20:58,263 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 23:20:58,637 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:20:58,638 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:20:58,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:20:58 BoogieIcfgContainer [2020-09-11 23:20:58,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:20:58,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:20:58,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:20:58,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:20:58,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:20:57" (1/3) ... [2020-09-11 23:20:58,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1de9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:20:58, skipping insertion in model container [2020-09-11 23:20:58,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:20:58" (2/3) ... [2020-09-11 23:20:58,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1de9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:20:58, skipping insertion in model container [2020-09-11 23:20:58,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:20:58" (3/3) ... [2020-09-11 23:20:58,654 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc.i [2020-09-11 23:20:58,666 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:20:58,666 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:20:58,677 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:20:58,678 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:20:58,722 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,722 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,722 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,723 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,723 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,724 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,724 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,724 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,725 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,725 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,725 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,726 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,727 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,727 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,727 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,727 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,728 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,728 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,738 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,738 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,738 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,739 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,747 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,748 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,758 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,758 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,759 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,759 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:20:58,790 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 23:20:58,814 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:20:58,815 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:20:58,815 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:20:58,815 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:20:58,815 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:20:58,815 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:20:58,816 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:20:58,816 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:20:58,834 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-11 23:20:58,837 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:20:58,889 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:20:58,889 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:20:58,899 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:20:58,903 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:20:58,924 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:20:58,924 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:20:58,925 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:20:58,927 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 23:20:58,929 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:21:00,471 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-11 23:21:00,641 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-09-11 23:21:00,688 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-09-11 23:21:00,688 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-11 23:21:00,699 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 23:21:00,747 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 23:21:00,750 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 23:21:00,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 23:21:00,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:21:00,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:21:00,765 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:21:00,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:21:00,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-09-11 23:21:00,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:21:00,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705316784] [2020-09-11 23:21:00,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:21:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:21:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:21:01,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705316784] [2020-09-11 23:21:01,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:21:01,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:21:01,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1901564624] [2020-09-11 23:21:01,068 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:21:01,072 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:21:01,090 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 23:21:01,090 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:21:01,093 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:21:01,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:21:01,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:21:01,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:21:01,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:21:01,116 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 23:21:01,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:21:01,158 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-11 23:21:01,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:21:01,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 23:21:01,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:21:01,184 INFO L225 Difference]: With dead ends: 282 [2020-09-11 23:21:01,184 INFO L226 Difference]: Without dead ends: 218 [2020-09-11 23:21:01,186 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 [2020-09-11 23:21:01,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-11 23:21:01,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-11 23:21:01,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-11 23:21:01,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-11 23:21:01,264 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-11 23:21:01,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:21:01,266 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-11 23:21:01,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:21:01,266 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-11 23:21:01,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 23:21:01,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:21:01,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:21:01,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:21:01,269 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:21:01,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:21:01,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1298976658, now seen corresponding path program 1 times [2020-09-11 23:21:01,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:21:01,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648862401] [2020-09-11 23:21:01,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:21:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:21:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:21:01,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648862401] [2020-09-11 23:21:01,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:21:01,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:21:01,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1456419730] [2020-09-11 23:21:01,363 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:21:01,364 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:21:01,366 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-09-11 23:21:01,366 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:21:01,386 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:21:01,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:21:01,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:21:01,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:21:01,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:21:01,389 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-11 23:21:01,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:21:01,422 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-11 23:21:01,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:21:01,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 23:21:01,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:21:01,424 INFO L225 Difference]: With dead ends: 242 [2020-09-11 23:21:01,424 INFO L226 Difference]: Without dead ends: 146 [2020-09-11 23:21:01,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:21:01,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-11 23:21:01,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-11 23:21:01,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-11 23:21:01,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-09-11 23:21:01,438 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-09-11 23:21:01,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:21:01,439 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-09-11 23:21:01,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:21:01,439 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-09-11 23:21:01,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 23:21:01,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:21:01,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:21:01,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:21:01,441 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:21:01,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:21:01,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1379708097, now seen corresponding path program 1 times [2020-09-11 23:21:01,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:21:01,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369792809] [2020-09-11 23:21:01,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:21:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:21:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:21:01,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369792809] [2020-09-11 23:21:01,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:21:01,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:21:01,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [636494375] [2020-09-11 23:21:01,524 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:21:01,526 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:21:01,529 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-09-11 23:21:01,529 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:21:01,548 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:21:01,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:21:01,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:21:01,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:21:01,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:21:01,550 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-09-11 23:21:01,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:21:01,562 INFO L93 Difference]: Finished difference Result 138 states and 336 transitions. [2020-09-11 23:21:01,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:21:01,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-11 23:21:01,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:21:01,564 INFO L225 Difference]: With dead ends: 138 [2020-09-11 23:21:01,564 INFO L226 Difference]: Without dead ends: 138 [2020-09-11 23:21:01,565 INFO L675 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 [2020-09-11 23:21:01,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-11 23:21:01,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-09-11 23:21:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-11 23:21:01,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 336 transitions. [2020-09-11 23:21:01,575 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 336 transitions. Word has length 11 [2020-09-11 23:21:01,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:21:01,576 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 336 transitions. [2020-09-11 23:21:01,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:21:01,576 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 336 transitions. [2020-09-11 23:21:01,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 23:21:01,578 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:21:01,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:21:01,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:21:01,578 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:21:01,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:21:01,579 INFO L82 PathProgramCache]: Analyzing trace with hash -178767453, now seen corresponding path program 1 times [2020-09-11 23:21:01,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:21:01,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101245424] [2020-09-11 23:21:01,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:21:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:21:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:21:01,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101245424] [2020-09-11 23:21:01,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:21:01,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:21:01,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [123115104] [2020-09-11 23:21:01,645 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:21:01,646 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:21:01,648 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-11 23:21:01,648 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:21:01,690 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:21:01,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:21:01,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:21:01,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:21:01,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:21:01,691 INFO L87 Difference]: Start difference. First operand 138 states and 336 transitions. Second operand 4 states. [2020-09-11 23:21:01,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:21:01,717 INFO L93 Difference]: Finished difference Result 178 states and 418 transitions. [2020-09-11 23:21:01,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:21:01,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 23:21:01,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:21:01,719 INFO L225 Difference]: With dead ends: 178 [2020-09-11 23:21:01,719 INFO L226 Difference]: Without dead ends: 82 [2020-09-11 23:21:01,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:21:01,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-11 23:21:01,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-09-11 23:21:01,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-11 23:21:01,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 174 transitions. [2020-09-11 23:21:01,726 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 174 transitions. Word has length 12 [2020-09-11 23:21:01,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:21:01,726 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 174 transitions. [2020-09-11 23:21:01,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:21:01,727 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 174 transitions. [2020-09-11 23:21:01,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:21:01,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:21:01,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:21:01,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:21:01,728 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:21:01,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:21:01,729 INFO L82 PathProgramCache]: Analyzing trace with hash 616515302, now seen corresponding path program 1 times [2020-09-11 23:21:01,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:21:01,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455714004] [2020-09-11 23:21:01,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:21:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:21:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:21:01,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455714004] [2020-09-11 23:21:01,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:21:01,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:21:01,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [852762776] [2020-09-11 23:21:01,795 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:21:01,797 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:21:01,801 INFO L274 McrAutomatonBuilder]: Finished intersection with 33 states and 50 transitions. [2020-09-11 23:21:01,802 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:21:01,912 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:21:01,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:21:01,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:21:01,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:21:01,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:21:01,913 INFO L87 Difference]: Start difference. First operand 82 states and 174 transitions. Second operand 4 states. [2020-09-11 23:21:01,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:21:01,933 INFO L93 Difference]: Finished difference Result 74 states and 154 transitions. [2020-09-11 23:21:01,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:21:01,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 23:21:01,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:21:01,934 INFO L225 Difference]: With dead ends: 74 [2020-09-11 23:21:01,934 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:21:01,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:21:01,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:21:01,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:21:01,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:21:01,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:21:01,936 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-09-11 23:21:01,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:21:01,936 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:21:01,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:21:01,937 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:21:01,937 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:21:01,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:21:01,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:21:01 BasicIcfg [2020-09-11 23:21:01,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:21:01,944 INFO L168 Benchmark]: Toolchain (without parser) took 4706.34 ms. Allocated memory was 140.0 MB in the beginning and 249.6 MB in the end (delta: 109.6 MB). Free memory was 100.5 MB in the beginning and 210.3 MB in the end (delta: -109.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:21:01,945 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:21:01,946 INFO L168 Benchmark]: CACSL2BoogieTranslator took 827.21 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 162.1 MB in the end (delta: -62.2 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-09-11 23:21:01,947 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.16 ms. Allocated memory is still 203.9 MB. Free memory was 162.1 MB in the beginning and 159.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-11 23:21:01,948 INFO L168 Benchmark]: Boogie Preprocessor took 32.05 ms. Allocated memory is still 203.9 MB. Free memory was 159.4 MB in the beginning and 158.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 23:21:01,949 INFO L168 Benchmark]: RCFGBuilder took 471.04 ms. Allocated memory is still 203.9 MB. Free memory was 158.1 MB in the beginning and 136.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-11 23:21:01,950 INFO L168 Benchmark]: TraceAbstraction took 3297.02 ms. Allocated memory was 203.9 MB in the beginning and 249.6 MB in the end (delta: 45.6 MB). Free memory was 135.4 MB in the beginning and 210.3 MB in the end (delta: -74.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:21:01,954 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 827.21 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 162.1 MB in the end (delta: -62.2 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 70.16 ms. Allocated memory is still 203.9 MB. Free memory was 162.1 MB in the beginning and 159.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.05 ms. Allocated memory is still 203.9 MB. Free memory was 159.4 MB in the beginning and 158.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 471.04 ms. Allocated memory is still 203.9 MB. Free memory was 158.1 MB in the beginning and 136.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3297.02 ms. Allocated memory was 203.9 MB in the beginning and 249.6 MB in the end (delta: 45.6 MB). Free memory was 135.4 MB in the beginning and 210.3 MB in the end (delta: -74.9 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: 1.8s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 653 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 84 SDtfs, 65 SDslu, 67 SDs, 0 SdLazy, 28 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 1369 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...