/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:48:54,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:48:54,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:48:54,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:48:54,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:48:54,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:48:54,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:48:54,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:48:54,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:48:54,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:48:54,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:48:54,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:48:54,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:48:54,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:48:54,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:48:54,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:48:54,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:48:54,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:48:54,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:48:54,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:48:54,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:48:54,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:48:54,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:48:54,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:48:54,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:48:54,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:48:54,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:48:54,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:48:54,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:48:54,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:48:54,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:48:54,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:48:54,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:48:54,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:48:54,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:48:54,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:48:54,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:48:54,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:48:54,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:48:54,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:48:54,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:48:54,711 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:48:54,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:48:54,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:48:54,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:48:54,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:48:54,738 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:48:54,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:48:54,738 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:48:54,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:48:54,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:48:54,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:48:54,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:48:54,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:48:54,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:48:54,740 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:48:54,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:48:54,740 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:48:54,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:48:54,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:48:54,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:48:54,741 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:48:54,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:48:54,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:48:54,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:48:54,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:48:54,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:48:54,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:48:54,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:48:54,743 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:48:54,743 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:48:54,743 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:48:55,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:48:55,084 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:48:55,087 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:48:55,089 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:48:55,089 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:48:55,090 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2020-10-11 18:48:55,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e4b544fd/d40e8c031ebc47ddb0d413612986def2/FLAGa62217775 [2020-10-11 18:48:55,734 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:48:55,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2020-10-11 18:48:55,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e4b544fd/d40e8c031ebc47ddb0d413612986def2/FLAGa62217775 [2020-10-11 18:48:56,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e4b544fd/d40e8c031ebc47ddb0d413612986def2 [2020-10-11 18:48:56,133 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:48:56,135 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:48:56,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:48:56,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:48:56,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:48:56,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:48:56" (1/1) ... [2020-10-11 18:48:56,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f4d06a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:56, skipping insertion in model container [2020-10-11 18:48:56,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:48:56" (1/1) ... [2020-10-11 18:48:56,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:48:56,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:48:56,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:48:56,693 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:48:56,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:48:56,810 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:48:56,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:56 WrapperNode [2020-10-11 18:48:56,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:48:56,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:48:56,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:48:56,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:48:56,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:56" (1/1) ... [2020-10-11 18:48:56,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:56" (1/1) ... [2020-10-11 18:48:56,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:48:56,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:48:56,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:48:56,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:48:56,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:56" (1/1) ... [2020-10-11 18:48:56,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:56" (1/1) ... [2020-10-11 18:48:56,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:56" (1/1) ... [2020-10-11 18:48:56,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:56" (1/1) ... [2020-10-11 18:48:56,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:56" (1/1) ... [2020-10-11 18:48:56,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:56" (1/1) ... [2020-10-11 18:48:56,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:56" (1/1) ... [2020-10-11 18:48:56,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:48:56,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:48:56,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:48:56,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:48:56,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:48:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:48:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:48:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:48:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:48:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:48:56,958 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:48:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:48:56,958 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:48:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:48:56,959 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:48:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-11 18:48:56,959 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-11 18:48:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:48:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:48:56,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:48:56,961 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:48:57,347 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:48:57,348 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:48:57,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:48:57 BoogieIcfgContainer [2020-10-11 18:48:57,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:48:57,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:48:57,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:48:57,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:48:57,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:48:56" (1/3) ... [2020-10-11 18:48:57,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629bfc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:48:57, skipping insertion in model container [2020-10-11 18:48:57,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:56" (2/3) ... [2020-10-11 18:48:57,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629bfc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:48:57, skipping insertion in model container [2020-10-11 18:48:57,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:48:57" (3/3) ... [2020-10-11 18:48:57,359 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.opt.i [2020-10-11 18:48:57,368 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:48:57,375 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:48:57,376 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:48:57,406 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,406 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,407 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,407 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,407 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,408 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,408 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,408 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,409 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,409 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,409 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,409 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,410 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,410 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,410 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,411 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,411 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,411 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,412 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,412 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,412 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,412 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,413 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,413 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,417 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,417 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,417 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,418 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,425 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,425 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,425 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,426 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,428 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,429 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,429 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,429 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,432 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,433 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,433 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,433 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:57,451 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-11 18:48:57,473 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:48:57,473 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:48:57,473 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:48:57,473 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:48:57,473 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:48:57,474 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:48:57,474 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:48:57,474 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:48:57,488 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-10-11 18:48:57,537 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-10-11 18:48:57,537 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:48:57,543 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-10-11 18:48:57,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 86 transitions, 192 flow [2020-10-11 18:48:57,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 69 transitions, 150 flow [2020-10-11 18:48:57,585 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2020-10-11 18:48:57,586 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:48:57,586 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:48:57,587 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:48:57,588 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:48:57,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:48:57,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1376710148, now seen corresponding path program 1 times [2020-10-11 18:48:57,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:48:57,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710944418] [2020-10-11 18:48:57,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:48:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:48:58,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:48:58,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710944418] [2020-10-11 18:48:58,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:48:58,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:48:58,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782309215] [2020-10-11 18:48:58,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:48:58,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:48:58,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:48:58,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:48:58,321 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 86 [2020-10-11 18:48:58,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 150 flow. Second operand 6 states. [2020-10-11 18:48:58,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:48:58,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 86 [2020-10-11 18:48:58,326 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:48:58,475 INFO L129 PetriNetUnfolder]: 3/91 cut-off events. [2020-10-11 18:48:58,475 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:48:58,476 INFO L80 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 138 event pairs, 0 based on Foata normal form. 4/94 useless extension candidates. Maximal degree in co-relation 95. Up to 7 conditions per place. [2020-10-11 18:48:58,478 INFO L132 encePairwiseOnDemand]: 79/86 looper letters, 6 selfloop transitions, 2 changer transitions 11/78 dead transitions. [2020-10-11 18:48:58,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 78 transitions, 204 flow [2020-10-11 18:48:58,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:48:58,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:48:58,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 706 transitions. [2020-10-11 18:48:58,498 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9121447028423773 [2020-10-11 18:48:58,499 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 706 transitions. [2020-10-11 18:48:58,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 706 transitions. [2020-10-11 18:48:58,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:48:58,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 706 transitions. [2020-10-11 18:48:58,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:48:58,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:48:58,521 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:48:58,527 INFO L185 Difference]: Start difference. First operand has 81 places, 69 transitions, 150 flow. Second operand 9 states and 706 transitions. [2020-10-11 18:48:58,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 78 transitions, 204 flow [2020-10-11 18:48:58,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 78 transitions, 200 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-11 18:48:58,542 INFO L241 Difference]: Finished difference. Result has 92 places, 67 transitions, 162 flow [2020-10-11 18:48:58,546 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=162, PETRI_PLACES=92, PETRI_TRANSITIONS=67} [2020-10-11 18:48:58,551 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2020-10-11 18:48:58,551 INFO L481 AbstractCegarLoop]: Abstraction has has 92 places, 67 transitions, 162 flow [2020-10-11 18:48:58,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:48:58,552 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:48:58,557 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:48:58,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:48:58,558 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:48:58,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:48:58,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1950055099, now seen corresponding path program 1 times [2020-10-11 18:48:58,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:48:58,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172916056] [2020-10-11 18:48:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:48:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:48:58,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:48:58,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172916056] [2020-10-11 18:48:58,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:48:58,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:48:58,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209022025] [2020-10-11 18:48:58,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:48:58,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:48:58,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:48:58,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:48:58,862 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 86 [2020-10-11 18:48:58,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 67 transitions, 162 flow. Second operand 6 states. [2020-10-11 18:48:58,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:48:58,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 86 [2020-10-11 18:48:58,863 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:48:58,979 INFO L129 PetriNetUnfolder]: 3/82 cut-off events. [2020-10-11 18:48:58,980 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-10-11 18:48:58,981 INFO L80 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 82 events. 3/82 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 110 event pairs, 0 based on Foata normal form. 2/84 useless extension candidates. Maximal degree in co-relation 123. Up to 7 conditions per place. [2020-10-11 18:48:58,981 INFO L132 encePairwiseOnDemand]: 80/86 looper letters, 6 selfloop transitions, 2 changer transitions 10/77 dead transitions. [2020-10-11 18:48:58,981 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 77 transitions, 236 flow [2020-10-11 18:48:58,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:48:58,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:48:58,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 704 transitions. [2020-10-11 18:48:58,985 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9095607235142119 [2020-10-11 18:48:58,985 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 704 transitions. [2020-10-11 18:48:58,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 704 transitions. [2020-10-11 18:48:58,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:48:58,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 704 transitions. [2020-10-11 18:48:58,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:48:58,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:48:58,990 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:48:58,990 INFO L185 Difference]: Start difference. First operand has 92 places, 67 transitions, 162 flow. Second operand 9 states and 704 transitions. [2020-10-11 18:48:58,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 77 transitions, 236 flow [2020-10-11 18:48:58,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 77 transitions, 204 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:48:58,994 INFO L241 Difference]: Finished difference. Result has 92 places, 67 transitions, 166 flow [2020-10-11 18:48:58,994 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=166, PETRI_PLACES=92, PETRI_TRANSITIONS=67} [2020-10-11 18:48:58,995 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2020-10-11 18:48:58,995 INFO L481 AbstractCegarLoop]: Abstraction has has 92 places, 67 transitions, 166 flow [2020-10-11 18:48:58,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:48:58,995 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:48:58,996 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:48:58,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:48:58,996 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:48:58,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:48:58,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1558850758, now seen corresponding path program 1 times [2020-10-11 18:48:58,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:48:58,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366567325] [2020-10-11 18:48:58,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:48:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:48:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:48:59,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366567325] [2020-10-11 18:48:59,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:48:59,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:48:59,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155960294] [2020-10-11 18:48:59,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:48:59,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:48:59,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:48:59,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:48:59,257 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 86 [2020-10-11 18:48:59,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 67 transitions, 166 flow. Second operand 6 states. [2020-10-11 18:48:59,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:48:59,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 86 [2020-10-11 18:48:59,258 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:48:59,375 INFO L129 PetriNetUnfolder]: 3/90 cut-off events. [2020-10-11 18:48:59,376 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2020-10-11 18:48:59,377 INFO L80 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 90 events. 3/90 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs, 0 based on Foata normal form. 2/92 useless extension candidates. Maximal degree in co-relation 134. Up to 7 conditions per place. [2020-10-11 18:48:59,377 INFO L132 encePairwiseOnDemand]: 80/86 looper letters, 6 selfloop transitions, 2 changer transitions 10/77 dead transitions. [2020-10-11 18:48:59,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 77 transitions, 242 flow [2020-10-11 18:48:59,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:48:59,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:48:59,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 704 transitions. [2020-10-11 18:48:59,381 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9095607235142119 [2020-10-11 18:48:59,381 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 704 transitions. [2020-10-11 18:48:59,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 704 transitions. [2020-10-11 18:48:59,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:48:59,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 704 transitions. [2020-10-11 18:48:59,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:48:59,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:48:59,386 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:48:59,386 INFO L185 Difference]: Start difference. First operand has 92 places, 67 transitions, 166 flow. Second operand 9 states and 704 transitions. [2020-10-11 18:48:59,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 77 transitions, 242 flow [2020-10-11 18:48:59,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 77 transitions, 210 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:48:59,391 INFO L241 Difference]: Finished difference. Result has 93 places, 67 transitions, 170 flow [2020-10-11 18:48:59,391 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=93, PETRI_TRANSITIONS=67} [2020-10-11 18:48:59,392 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2020-10-11 18:48:59,392 INFO L481 AbstractCegarLoop]: Abstraction has has 93 places, 67 transitions, 170 flow [2020-10-11 18:48:59,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:48:59,392 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:48:59,392 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:48:59,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:48:59,393 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:48:59,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:48:59,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1656858489, now seen corresponding path program 1 times [2020-10-11 18:48:59,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:48:59,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153191912] [2020-10-11 18:48:59,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:48:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:48:59,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:48:59,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153191912] [2020-10-11 18:48:59,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:48:59,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:48:59,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673203141] [2020-10-11 18:48:59,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:48:59,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:48:59,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:48:59,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:48:59,716 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 86 [2020-10-11 18:48:59,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 67 transitions, 170 flow. Second operand 7 states. [2020-10-11 18:48:59,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:48:59,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 86 [2020-10-11 18:48:59,717 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:48:59,875 INFO L129 PetriNetUnfolder]: 4/88 cut-off events. [2020-10-11 18:48:59,875 INFO L130 PetriNetUnfolder]: For 31/38 co-relation queries the response was YES. [2020-10-11 18:48:59,876 INFO L80 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 88 events. 4/88 cut-off events. For 31/38 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 2/89 useless extension candidates. Maximal degree in co-relation 144. Up to 7 conditions per place. [2020-10-11 18:48:59,876 INFO L132 encePairwiseOnDemand]: 78/86 looper letters, 6 selfloop transitions, 4 changer transitions 12/79 dead transitions. [2020-10-11 18:48:59,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 79 transitions, 267 flow [2020-10-11 18:48:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:48:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:48:59,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 764 transitions. [2020-10-11 18:48:59,880 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8883720930232558 [2020-10-11 18:48:59,880 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 764 transitions. [2020-10-11 18:48:59,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 764 transitions. [2020-10-11 18:48:59,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:48:59,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 764 transitions. [2020-10-11 18:48:59,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:48:59,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:48:59,885 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:48:59,885 INFO L185 Difference]: Start difference. First operand has 93 places, 67 transitions, 170 flow. Second operand 10 states and 764 transitions. [2020-10-11 18:48:59,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 79 transitions, 267 flow [2020-10-11 18:48:59,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 79 transitions, 235 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:48:59,889 INFO L241 Difference]: Finished difference. Result has 96 places, 67 transitions, 184 flow [2020-10-11 18:48:59,889 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=184, PETRI_PLACES=96, PETRI_TRANSITIONS=67} [2020-10-11 18:48:59,889 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 15 predicate places. [2020-10-11 18:48:59,889 INFO L481 AbstractCegarLoop]: Abstraction has has 96 places, 67 transitions, 184 flow [2020-10-11 18:48:59,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:48:59,890 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:48:59,890 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:48:59,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:48:59,890 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:48:59,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:48:59,891 INFO L82 PathProgramCache]: Analyzing trace with hash 670769330, now seen corresponding path program 1 times [2020-10-11 18:48:59,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:48:59,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64146861] [2020-10-11 18:48:59,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:48:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:49:00,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:49:00,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64146861] [2020-10-11 18:49:00,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:49:00,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:49:00,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615380498] [2020-10-11 18:49:00,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:49:00,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:49:00,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:49:00,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:49:00,200 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 86 [2020-10-11 18:49:00,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 67 transitions, 184 flow. Second operand 7 states. [2020-10-11 18:49:00,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:49:00,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 86 [2020-10-11 18:49:00,201 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:49:00,376 INFO L129 PetriNetUnfolder]: 4/88 cut-off events. [2020-10-11 18:49:00,376 INFO L130 PetriNetUnfolder]: For 76/93 co-relation queries the response was YES. [2020-10-11 18:49:00,377 INFO L80 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 88 events. 4/88 cut-off events. For 76/93 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 156 event pairs, 0 based on Foata normal form. 2/90 useless extension candidates. Maximal degree in co-relation 155. Up to 7 conditions per place. [2020-10-11 18:49:00,378 INFO L132 encePairwiseOnDemand]: 78/86 looper letters, 6 selfloop transitions, 4 changer transitions 12/79 dead transitions. [2020-10-11 18:49:00,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 79 transitions, 289 flow [2020-10-11 18:49:00,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:49:00,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:49:00,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 764 transitions. [2020-10-11 18:49:00,381 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8883720930232558 [2020-10-11 18:49:00,381 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 764 transitions. [2020-10-11 18:49:00,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 764 transitions. [2020-10-11 18:49:00,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:49:00,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 764 transitions. [2020-10-11 18:49:00,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:49:00,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:49:00,385 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:49:00,386 INFO L185 Difference]: Start difference. First operand has 96 places, 67 transitions, 184 flow. Second operand 10 states and 764 transitions. [2020-10-11 18:49:00,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 79 transitions, 289 flow [2020-10-11 18:49:00,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 79 transitions, 239 flow, removed 20 selfloop flow, removed 10 redundant places. [2020-10-11 18:49:00,390 INFO L241 Difference]: Finished difference. Result has 97 places, 67 transitions, 188 flow [2020-10-11 18:49:00,390 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=188, PETRI_PLACES=97, PETRI_TRANSITIONS=67} [2020-10-11 18:49:00,390 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 16 predicate places. [2020-10-11 18:49:00,391 INFO L481 AbstractCegarLoop]: Abstraction has has 97 places, 67 transitions, 188 flow [2020-10-11 18:49:00,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:49:00,391 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:49:00,391 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:49:00,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:49:00,391 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:49:00,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:49:00,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1208829016, now seen corresponding path program 1 times [2020-10-11 18:49:00,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:49:00,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726432832] [2020-10-11 18:49:00,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:49:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:49:00,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:49:00,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726432832] [2020-10-11 18:49:00,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:49:00,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:49:00,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353039603] [2020-10-11 18:49:00,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:49:00,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:49:00,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:49:00,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:49:00,699 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 86 [2020-10-11 18:49:00,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 67 transitions, 188 flow. Second operand 7 states. [2020-10-11 18:49:00,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:49:00,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 86 [2020-10-11 18:49:00,700 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:49:00,886 INFO L129 PetriNetUnfolder]: 4/93 cut-off events. [2020-10-11 18:49:00,887 INFO L130 PetriNetUnfolder]: For 57/61 co-relation queries the response was YES. [2020-10-11 18:49:00,887 INFO L80 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 93 events. 4/93 cut-off events. For 57/61 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 167 event pairs, 0 based on Foata normal form. 3/95 useless extension candidates. Maximal degree in co-relation 167. Up to 7 conditions per place. [2020-10-11 18:49:00,888 INFO L132 encePairwiseOnDemand]: 78/86 looper letters, 6 selfloop transitions, 4 changer transitions 12/79 dead transitions. [2020-10-11 18:49:00,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 79 transitions, 293 flow [2020-10-11 18:49:00,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:49:00,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:49:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 764 transitions. [2020-10-11 18:49:00,893 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8883720930232558 [2020-10-11 18:49:00,893 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 764 transitions. [2020-10-11 18:49:00,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 764 transitions. [2020-10-11 18:49:00,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:49:00,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 764 transitions. [2020-10-11 18:49:00,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:49:00,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:49:00,897 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:49:00,898 INFO L185 Difference]: Start difference. First operand has 97 places, 67 transitions, 188 flow. Second operand 10 states and 764 transitions. [2020-10-11 18:49:00,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 79 transitions, 293 flow [2020-10-11 18:49:00,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 79 transitions, 243 flow, removed 20 selfloop flow, removed 10 redundant places. [2020-10-11 18:49:00,901 INFO L241 Difference]: Finished difference. Result has 98 places, 67 transitions, 192 flow [2020-10-11 18:49:00,901 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=192, PETRI_PLACES=98, PETRI_TRANSITIONS=67} [2020-10-11 18:49:00,902 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 17 predicate places. [2020-10-11 18:49:00,902 INFO L481 AbstractCegarLoop]: Abstraction has has 98 places, 67 transitions, 192 flow [2020-10-11 18:49:00,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:49:00,902 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:49:00,902 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:49:00,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:49:00,903 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:49:00,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:49:00,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1749040822, now seen corresponding path program 1 times [2020-10-11 18:49:00,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:49:00,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111941162] [2020-10-11 18:49:00,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:49:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:49:00,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:49:00,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111941162] [2020-10-11 18:49:00,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:49:00,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:49:00,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502787362] [2020-10-11 18:49:00,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:49:00,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:49:00,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:49:00,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:49:01,223 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 86 [2020-10-11 18:49:01,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 67 transitions, 192 flow. Second operand 7 states. [2020-10-11 18:49:01,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:49:01,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 86 [2020-10-11 18:49:01,224 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:49:01,379 INFO L129 PetriNetUnfolder]: 4/82 cut-off events. [2020-10-11 18:49:01,379 INFO L130 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2020-10-11 18:49:01,380 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 82 events. 4/82 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 2/84 useless extension candidates. Maximal degree in co-relation 139. Up to 5 conditions per place. [2020-10-11 18:49:01,381 INFO L132 encePairwiseOnDemand]: 79/86 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2020-10-11 18:49:01,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 72 transitions, 248 flow [2020-10-11 18:49:01,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:49:01,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:49:01,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 758 transitions. [2020-10-11 18:49:01,388 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8813953488372093 [2020-10-11 18:49:01,388 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 758 transitions. [2020-10-11 18:49:01,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 758 transitions. [2020-10-11 18:49:01,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:49:01,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 758 transitions. [2020-10-11 18:49:01,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:49:01,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:49:01,392 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:49:01,393 INFO L185 Difference]: Start difference. First operand has 98 places, 67 transitions, 192 flow. Second operand 10 states and 758 transitions. [2020-10-11 18:49:01,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 72 transitions, 248 flow [2020-10-11 18:49:01,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 72 transitions, 214 flow, removed 12 selfloop flow, removed 8 redundant places. [2020-10-11 18:49:01,395 INFO L241 Difference]: Finished difference. Result has 91 places, 0 transitions, 0 flow [2020-10-11 18:49:01,395 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=91, PETRI_TRANSITIONS=0} [2020-10-11 18:49:01,396 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 10 predicate places. [2020-10-11 18:49:01,396 INFO L481 AbstractCegarLoop]: Abstraction has has 91 places, 0 transitions, 0 flow [2020-10-11 18:49:01,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:49:01,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:49:01,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:49:01 BasicIcfg [2020-10-11 18:49:01,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:49:01,405 INFO L168 Benchmark]: Toolchain (without parser) took 5269.60 ms. Allocated memory was 249.0 MB in the beginning and 431.5 MB in the end (delta: 182.5 MB). Free memory was 203.5 MB in the beginning and 304.2 MB in the end (delta: -100.6 MB). Peak memory consumption was 81.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:49:01,405 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 249.0 MB. Free memory is still 225.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:49:01,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.53 ms. Allocated memory was 249.0 MB in the beginning and 305.7 MB in the end (delta: 56.6 MB). Free memory was 203.5 MB in the beginning and 259.0 MB in the end (delta: -55.5 MB). Peak memory consumption was 29.3 MB. Max. memory is 14.2 GB. [2020-10-11 18:49:01,407 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.07 ms. Allocated memory is still 305.7 MB. Free memory was 259.0 MB in the beginning and 256.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:49:01,408 INFO L168 Benchmark]: Boogie Preprocessor took 28.54 ms. Allocated memory is still 305.7 MB. Free memory was 256.5 MB in the beginning and 254.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:49:01,409 INFO L168 Benchmark]: RCFGBuilder took 459.52 ms. Allocated memory is still 305.7 MB. Free memory was 254.0 MB in the beginning and 229.6 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-11 18:49:01,410 INFO L168 Benchmark]: TraceAbstraction took 4050.47 ms. Allocated memory was 305.7 MB in the beginning and 431.5 MB in the end (delta: 125.8 MB). Free memory was 229.6 MB in the beginning and 304.2 MB in the end (delta: -74.5 MB). Peak memory consumption was 51.3 MB. Max. memory is 14.2 GB. [2020-10-11 18:49:01,414 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 249.0 MB. Free memory is still 225.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 675.53 ms. Allocated memory was 249.0 MB in the beginning and 305.7 MB in the end (delta: 56.6 MB). Free memory was 203.5 MB in the beginning and 259.0 MB in the end (delta: -55.5 MB). Peak memory consumption was 29.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.07 ms. Allocated memory is still 305.7 MB. Free memory was 259.0 MB in the beginning and 256.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.54 ms. Allocated memory is still 305.7 MB. Free memory was 256.5 MB in the beginning and 254.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 459.52 ms. Allocated memory is still 305.7 MB. Free memory was 254.0 MB in the beginning and 229.6 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4050.47 ms. Allocated memory was 305.7 MB in the beginning and 431.5 MB in the end (delta: 125.8 MB). Free memory was 229.6 MB in the beginning and 304.2 MB in the end (delta: -74.5 MB). Peak memory consumption was 51.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 151 SDtfs, 205 SDslu, 470 SDs, 0 SdLazy, 397 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 343 NumberOfCodeBlocks, 343 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 336 ConstructedInterpolants, 0 QuantifiedInterpolants, 50252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...