/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:52:21,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:52:21,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:52:21,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-24 19:52:21,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:52:21,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:52:21,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:52:21,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:52:21,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:52:21,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:52:21,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:52:21,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:52:21,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:52:21,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:52:21,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:52:21,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:52:21,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:52:21,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:52:21,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:52:21,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:52:21,671 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-24 19:52:21,708 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:52:21,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:52:21,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:52:21,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:52:21,713 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:52:21,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:52:21,713 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:52:21,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:52:21,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:52:21,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:52:21,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:52:21,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:52:21,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:52:21,715 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:52:21,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:52:21,715 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:52:21,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:52:21,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:52:21,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:52:21,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:52:21,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:52:21,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:52:21,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:52:21,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:52:21,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:52:21,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:52:21,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:52:21,717 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:52:21,717 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:52:22,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:52:22,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:52:22,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:52:22,083 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:52:22,084 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:52:22,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-03-24 19:52:22,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1839a770f/37274eac8cb14035abf545388eca68c3/FLAG62b6de00e [2021-03-24 19:52:22,680 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:52:22,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-03-24 19:52:22,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1839a770f/37274eac8cb14035abf545388eca68c3/FLAG62b6de00e [2021-03-24 19:52:22,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1839a770f/37274eac8cb14035abf545388eca68c3 [2021-03-24 19:52:22,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:52:22,986 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:52:22,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:52:22,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:52:22,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:52:22,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:52:22" (1/1) ... [2021-03-24 19:52:22,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527d89bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:22, skipping insertion in model container [2021-03-24 19:52:22,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:52:22" (1/1) ... [2021-03-24 19:52:22,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:52:23,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:52:23,153 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i[950,963] [2021-03-24 19:52:23,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:52:23,330 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:52:23,341 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i[950,963] [2021-03-24 19:52:23,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:52:23,440 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:52:23,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:23 WrapperNode [2021-03-24 19:52:23,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:52:23,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:52:23,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:52:23,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:52:23,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:23" (1/1) ... [2021-03-24 19:52:23,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:23" (1/1) ... [2021-03-24 19:52:23,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:52:23,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:52:23,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:52:23,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:52:23,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:23" (1/1) ... [2021-03-24 19:52:23,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:23" (1/1) ... [2021-03-24 19:52:23,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:23" (1/1) ... [2021-03-24 19:52:23,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:23" (1/1) ... [2021-03-24 19:52:23,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:23" (1/1) ... [2021-03-24 19:52:23,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:23" (1/1) ... [2021-03-24 19:52:23,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:23" (1/1) ... [2021-03-24 19:52:23,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:52:23,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:52:23,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:52:23,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:52:23,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:23" (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 [2021-03-24 19:52:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:52:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:52:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:52:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:52:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:52:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:52:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:52:23,604 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:52:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:52:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:52:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:52:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:52:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:52:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:52:23,607 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:52:24,068 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:52:24,069 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 19:52:24,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:52:24 BoogieIcfgContainer [2021-03-24 19:52:24,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:52:24,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:52:24,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:52:24,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:52:24,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:52:22" (1/3) ... [2021-03-24 19:52:24,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f11fb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:52:24, skipping insertion in model container [2021-03-24 19:52:24,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:23" (2/3) ... [2021-03-24 19:52:24,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f11fb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:52:24, skipping insertion in model container [2021-03-24 19:52:24,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:52:24" (3/3) ... [2021-03-24 19:52:24,079 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2021-03-24 19:52:24,084 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:52:24,088 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 19:52:24,090 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:52:24,122 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,122 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,122 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,123 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,123 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,123 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,123 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,123 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,123 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,123 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,124 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,124 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,125 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,125 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,125 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,125 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,126 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,126 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,126 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,126 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,126 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,126 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,126 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,126 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,128 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,128 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,129 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,129 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,130 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,130 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,131 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,132 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,132 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,133 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,134 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,134 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,134 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,137 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,138 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,138 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,138 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,144 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,144 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,144 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,144 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:24,147 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:52:24,164 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 19:52:24,195 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:52:24,195 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:52:24,195 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:52:24,195 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:52:24,195 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:52:24,195 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:52:24,195 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:52:24,195 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:52:24,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 19:52:24,257 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-24 19:52:24,258 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:52:24,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-24 19:52:24,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 19:52:24,276 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-24 19:52:24,278 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:52:24,291 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 19:52:24,294 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 19:52:24,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-24 19:52:24,319 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-24 19:52:24,319 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:52:24,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-24 19:52:24,322 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-24 19:52:25,848 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-24 19:52:26,032 INFO L154 LiptonReduction]: Checked pairs total: 1328 [2021-03-24 19:52:26,032 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-24 19:52:26,034 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1758 [2021-03-24 19:52:26,049 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-24 19:52:26,050 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:52:26,050 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:26,050 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:26,051 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:26,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:26,055 INFO L82 PathProgramCache]: Analyzing trace with hash -864788976, now seen corresponding path program 1 times [2021-03-24 19:52:26,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:26,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400128568] [2021-03-24 19:52:26,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:26,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:26,261 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:52:26,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:52:26,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:26,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:26,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400128568] [2021-03-24 19:52:26,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:26,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:52:26,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267097197] [2021-03-24 19:52:26,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:52:26,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:26,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:52:26,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:52:26,312 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 19:52:26,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:26,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:26,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 19:52:26,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:26,458 INFO L129 PetriNetUnfolder]: 78/208 cut-off events. [2021-03-24 19:52:26,458 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:52:26,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 208 events. 78/208 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1017 event pairs, 4 based on Foata normal form. 23/218 useless extension candidates. Maximal degree in co-relation 358. Up to 58 conditions per place. [2021-03-24 19:52:26,462 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 12 selfloop transitions, 6 changer transitions 15/45 dead transitions. [2021-03-24 19:52:26,462 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 165 flow [2021-03-24 19:52:26,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:52:26,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:52:26,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 617 transitions. [2021-03-24 19:52:26,480 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7598522167487685 [2021-03-24 19:52:26,480 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 617 transitions. [2021-03-24 19:52:26,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 617 transitions. [2021-03-24 19:52:26,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:26,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 617 transitions. [2021-03-24 19:52:26,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:26,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:26,505 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:26,506 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 7 states and 617 transitions. [2021-03-24 19:52:26,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 165 flow [2021-03-24 19:52:26,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:52:26,510 INFO L241 Difference]: Finished difference. Result has 40 places, 25 transitions, 106 flow [2021-03-24 19:52:26,512 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2021-03-24 19:52:26,513 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-24 19:52:26,513 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 106 flow [2021-03-24 19:52:26,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:26,514 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:26,514 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:26,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:52:26,514 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:26,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:26,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1039221852, now seen corresponding path program 1 times [2021-03-24 19:52:26,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:26,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447953011] [2021-03-24 19:52:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:26,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:26,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:26,630 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:52:26,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:52:26,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:26,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447953011] [2021-03-24 19:52:26,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:26,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:52:26,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336135725] [2021-03-24 19:52:26,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:52:26,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:26,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:52:26,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:52:26,650 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 19:52:26,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:26,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:26,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 19:52:26,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:26,756 INFO L129 PetriNetUnfolder]: 39/133 cut-off events. [2021-03-24 19:52:26,756 INFO L130 PetriNetUnfolder]: For 214/284 co-relation queries the response was YES. [2021-03-24 19:52:26,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 133 events. 39/133 cut-off events. For 214/284 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 567 event pairs, 1 based on Foata normal form. 14/142 useless extension candidates. Maximal degree in co-relation 413. Up to 48 conditions per place. [2021-03-24 19:52:26,761 INFO L132 encePairwiseOnDemand]: 107/116 looper letters, 11 selfloop transitions, 11 changer transitions 11/45 dead transitions. [2021-03-24 19:52:26,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 294 flow [2021-03-24 19:52:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:52:26,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:52:26,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 611 transitions. [2021-03-24 19:52:26,764 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7524630541871922 [2021-03-24 19:52:26,764 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 611 transitions. [2021-03-24 19:52:26,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 611 transitions. [2021-03-24 19:52:26,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:26,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 611 transitions. [2021-03-24 19:52:26,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.28571428571429) internal successors, (611), 7 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:26,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:26,768 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:26,768 INFO L185 Difference]: Start difference. First operand has 40 places, 25 transitions, 106 flow. Second operand 7 states and 611 transitions. [2021-03-24 19:52:26,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 294 flow [2021-03-24 19:52:26,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 286 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-24 19:52:26,773 INFO L241 Difference]: Finished difference. Result has 47 places, 30 transitions, 195 flow [2021-03-24 19:52:26,773 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=195, PETRI_PLACES=47, PETRI_TRANSITIONS=30} [2021-03-24 19:52:26,774 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2021-03-24 19:52:26,774 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 30 transitions, 195 flow [2021-03-24 19:52:26,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:26,774 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:26,775 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:26,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:52:26,775 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:26,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:26,775 INFO L82 PathProgramCache]: Analyzing trace with hash 838624182, now seen corresponding path program 1 times [2021-03-24 19:52:26,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:26,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272537916] [2021-03-24 19:52:26,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:26,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:26,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:26,870 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:52:26,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:52:26,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:26,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272537916] [2021-03-24 19:52:26,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:26,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:52:26,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448728012] [2021-03-24 19:52:26,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:52:26,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:26,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:52:26,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:52:26,891 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 19:52:26,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 30 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:26,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:26,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 19:52:26,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:26,957 INFO L129 PetriNetUnfolder]: 25/107 cut-off events. [2021-03-24 19:52:26,958 INFO L130 PetriNetUnfolder]: For 347/477 co-relation queries the response was YES. [2021-03-24 19:52:26,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 107 events. 25/107 cut-off events. For 347/477 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 439 event pairs, 0 based on Foata normal form. 13/117 useless extension candidates. Maximal degree in co-relation 403. Up to 38 conditions per place. [2021-03-24 19:52:26,959 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 14 selfloop transitions, 14 changer transitions 7/47 dead transitions. [2021-03-24 19:52:26,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 416 flow [2021-03-24 19:52:26,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:52:26,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:52:26,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 606 transitions. [2021-03-24 19:52:26,966 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7463054187192119 [2021-03-24 19:52:26,966 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 606 transitions. [2021-03-24 19:52:26,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 606 transitions. [2021-03-24 19:52:26,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:26,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 606 transitions. [2021-03-24 19:52:26,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:26,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:26,970 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:26,970 INFO L185 Difference]: Start difference. First operand has 47 places, 30 transitions, 195 flow. Second operand 7 states and 606 transitions. [2021-03-24 19:52:26,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 416 flow [2021-03-24 19:52:26,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 396 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-03-24 19:52:26,975 INFO L241 Difference]: Finished difference. Result has 53 places, 37 transitions, 323 flow [2021-03-24 19:52:26,975 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=323, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2021-03-24 19:52:26,975 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2021-03-24 19:52:26,975 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 323 flow [2021-03-24 19:52:26,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:26,976 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:26,976 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:26,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:52:26,976 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:26,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:26,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1932997562, now seen corresponding path program 1 times [2021-03-24 19:52:26,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:26,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445639808] [2021-03-24 19:52:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:27,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:27,012 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:52:27,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:52:27,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:27,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:27,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445639808] [2021-03-24 19:52:27,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:27,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:52:27,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183920624] [2021-03-24 19:52:27,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:52:27,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:27,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:52:27,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:52:27,029 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 19:52:27,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 323 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:27,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 19:52:27,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:27,077 INFO L129 PetriNetUnfolder]: 20/91 cut-off events. [2021-03-24 19:52:27,077 INFO L130 PetriNetUnfolder]: For 345/450 co-relation queries the response was YES. [2021-03-24 19:52:27,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 91 events. 20/91 cut-off events. For 345/450 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 348 event pairs, 0 based on Foata normal form. 11/101 useless extension candidates. Maximal degree in co-relation 409. Up to 31 conditions per place. [2021-03-24 19:52:27,078 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 16 selfloop transitions, 18 changer transitions 3/49 dead transitions. [2021-03-24 19:52:27,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 538 flow [2021-03-24 19:52:27,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:52:27,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:52:27,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 604 transitions. [2021-03-24 19:52:27,080 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7438423645320197 [2021-03-24 19:52:27,081 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 604 transitions. [2021-03-24 19:52:27,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 604 transitions. [2021-03-24 19:52:27,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:27,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 604 transitions. [2021-03-24 19:52:27,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.28571428571429) internal successors, (604), 7 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,084 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,084 INFO L185 Difference]: Start difference. First operand has 53 places, 37 transitions, 323 flow. Second operand 7 states and 604 transitions. [2021-03-24 19:52:27,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 538 flow [2021-03-24 19:52:27,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 495 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-03-24 19:52:27,089 INFO L241 Difference]: Finished difference. Result has 57 places, 42 transitions, 445 flow [2021-03-24 19:52:27,089 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=445, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2021-03-24 19:52:27,089 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2021-03-24 19:52:27,089 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 445 flow [2021-03-24 19:52:27,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,089 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:27,089 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:27,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:52:27,090 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:27,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:27,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1648643309, now seen corresponding path program 1 times [2021-03-24 19:52:27,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:27,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173286669] [2021-03-24 19:52:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:27,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:27,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:27,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:27,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:27,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173286669] [2021-03-24 19:52:27,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:27,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:52:27,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115461762] [2021-03-24 19:52:27,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:52:27,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:27,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:52:27,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:52:27,132 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 116 [2021-03-24 19:52:27,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 445 flow. Second operand has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:27,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 116 [2021-03-24 19:52:27,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:27,177 INFO L129 PetriNetUnfolder]: 26/110 cut-off events. [2021-03-24 19:52:27,177 INFO L130 PetriNetUnfolder]: For 676/761 co-relation queries the response was YES. [2021-03-24 19:52:27,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 110 events. 26/110 cut-off events. For 676/761 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 454 event pairs, 0 based on Foata normal form. 6/114 useless extension candidates. Maximal degree in co-relation 540. Up to 37 conditions per place. [2021-03-24 19:52:27,178 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 2 selfloop transitions, 5 changer transitions 15/47 dead transitions. [2021-03-24 19:52:27,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 47 transitions, 527 flow [2021-03-24 19:52:27,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 19:52:27,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 19:52:27,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 558 transitions. [2021-03-24 19:52:27,180 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8017241379310345 [2021-03-24 19:52:27,180 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 558 transitions. [2021-03-24 19:52:27,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 558 transitions. [2021-03-24 19:52:27,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:27,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 558 transitions. [2021-03-24 19:52:27,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,184 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,184 INFO L185 Difference]: Start difference. First operand has 57 places, 42 transitions, 445 flow. Second operand 6 states and 558 transitions. [2021-03-24 19:52:27,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 47 transitions, 527 flow [2021-03-24 19:52:27,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 47 transitions, 510 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 19:52:27,189 INFO L241 Difference]: Finished difference. Result has 58 places, 32 transitions, 305 flow [2021-03-24 19:52:27,190 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=58, PETRI_TRANSITIONS=32} [2021-03-24 19:52:27,190 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2021-03-24 19:52:27,190 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 32 transitions, 305 flow [2021-03-24 19:52:27,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,190 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:27,190 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:27,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:52:27,191 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:27,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:27,191 INFO L82 PathProgramCache]: Analyzing trace with hash 2066078221, now seen corresponding path program 1 times [2021-03-24 19:52:27,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:27,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342577424] [2021-03-24 19:52:27,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:27,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:27,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:27,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:27,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:27,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342577424] [2021-03-24 19:52:27,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:27,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:52:27,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058807666] [2021-03-24 19:52:27,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:52:27,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:27,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:52:27,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:52:27,240 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 116 [2021-03-24 19:52:27,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 32 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:27,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 116 [2021-03-24 19:52:27,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:27,280 INFO L129 PetriNetUnfolder]: 58/156 cut-off events. [2021-03-24 19:52:27,280 INFO L130 PetriNetUnfolder]: For 811/845 co-relation queries the response was YES. [2021-03-24 19:52:27,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 156 events. 58/156 cut-off events. For 811/845 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 675 event pairs, 21 based on Foata normal form. 16/163 useless extension candidates. Maximal degree in co-relation 517. Up to 85 conditions per place. [2021-03-24 19:52:27,282 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 5 selfloop transitions, 6 changer transitions 5/42 dead transitions. [2021-03-24 19:52:27,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 42 transitions, 357 flow [2021-03-24 19:52:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:52:27,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:52:27,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2021-03-24 19:52:27,284 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7724137931034483 [2021-03-24 19:52:27,284 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2021-03-24 19:52:27,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2021-03-24 19:52:27,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:27,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2021-03-24 19:52:27,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,287 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,287 INFO L185 Difference]: Start difference. First operand has 58 places, 32 transitions, 305 flow. Second operand 5 states and 448 transitions. [2021-03-24 19:52:27,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 42 transitions, 357 flow [2021-03-24 19:52:27,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 42 transitions, 325 flow, removed 8 selfloop flow, removed 8 redundant places. [2021-03-24 19:52:27,290 INFO L241 Difference]: Finished difference. Result has 55 places, 37 transitions, 319 flow [2021-03-24 19:52:27,291 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2021-03-24 19:52:27,291 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2021-03-24 19:52:27,291 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 319 flow [2021-03-24 19:52:27,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,291 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:27,291 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:27,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:52:27,292 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:27,292 INFO L82 PathProgramCache]: Analyzing trace with hash -376145514, now seen corresponding path program 1 times [2021-03-24 19:52:27,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:27,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924123344] [2021-03-24 19:52:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:27,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:27,326 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:52:27,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:52:27,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:27,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:27,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:27,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924123344] [2021-03-24 19:52:27,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:27,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:52:27,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274110751] [2021-03-24 19:52:27,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:52:27,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:27,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:52:27,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:52:27,338 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 116 [2021-03-24 19:52:27,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 319 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:27,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 116 [2021-03-24 19:52:27,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:27,393 INFO L129 PetriNetUnfolder]: 38/124 cut-off events. [2021-03-24 19:52:27,393 INFO L130 PetriNetUnfolder]: For 540/681 co-relation queries the response was YES. [2021-03-24 19:52:27,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 124 events. 38/124 cut-off events. For 540/681 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 510 event pairs, 3 based on Foata normal form. 45/163 useless extension candidates. Maximal degree in co-relation 494. Up to 63 conditions per place. [2021-03-24 19:52:27,395 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 5 selfloop transitions, 10 changer transitions 6/47 dead transitions. [2021-03-24 19:52:27,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 413 flow [2021-03-24 19:52:27,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:52:27,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:52:27,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 625 transitions. [2021-03-24 19:52:27,397 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7697044334975369 [2021-03-24 19:52:27,397 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 625 transitions. [2021-03-24 19:52:27,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 625 transitions. [2021-03-24 19:52:27,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:27,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 625 transitions. [2021-03-24 19:52:27,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.28571428571429) internal successors, (625), 7 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,400 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,400 INFO L185 Difference]: Start difference. First operand has 55 places, 37 transitions, 319 flow. Second operand 7 states and 625 transitions. [2021-03-24 19:52:27,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 413 flow [2021-03-24 19:52:27,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 47 transitions, 413 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 19:52:27,403 INFO L241 Difference]: Finished difference. Result has 64 places, 41 transitions, 386 flow [2021-03-24 19:52:27,403 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=386, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2021-03-24 19:52:27,404 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2021-03-24 19:52:27,404 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 41 transitions, 386 flow [2021-03-24 19:52:27,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,404 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:27,404 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:27,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:52:27,404 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:27,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:27,405 INFO L82 PathProgramCache]: Analyzing trace with hash 994004399, now seen corresponding path program 1 times [2021-03-24 19:52:27,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:27,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663943996] [2021-03-24 19:52:27,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:27,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:27,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:27,461 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:52:27,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:52:27,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:27,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:27,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663943996] [2021-03-24 19:52:27,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:27,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:52:27,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979401348] [2021-03-24 19:52:27,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:52:27,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:27,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:52:27,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:52:27,474 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 116 [2021-03-24 19:52:27,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 41 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:27,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 116 [2021-03-24 19:52:27,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:27,543 INFO L129 PetriNetUnfolder]: 21/85 cut-off events. [2021-03-24 19:52:27,543 INFO L130 PetriNetUnfolder]: For 619/908 co-relation queries the response was YES. [2021-03-24 19:52:27,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 85 events. 21/85 cut-off events. For 619/908 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 283 event pairs, 0 based on Foata normal form. 62/145 useless extension candidates. Maximal degree in co-relation 426. Up to 40 conditions per place. [2021-03-24 19:52:27,544 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 2 selfloop transitions, 13 changer transitions 9/45 dead transitions. [2021-03-24 19:52:27,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 45 transitions, 458 flow [2021-03-24 19:52:27,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:52:27,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:52:27,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 795 transitions. [2021-03-24 19:52:27,547 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7614942528735632 [2021-03-24 19:52:27,547 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 795 transitions. [2021-03-24 19:52:27,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 795 transitions. [2021-03-24 19:52:27,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:27,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 795 transitions. [2021-03-24 19:52:27,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.33333333333333) internal successors, (795), 9 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,552 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,552 INFO L185 Difference]: Start difference. First operand has 64 places, 41 transitions, 386 flow. Second operand 9 states and 795 transitions. [2021-03-24 19:52:27,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 45 transitions, 458 flow [2021-03-24 19:52:27,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 45 transitions, 430 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-24 19:52:27,557 INFO L241 Difference]: Finished difference. Result has 69 places, 36 transitions, 333 flow [2021-03-24 19:52:27,558 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=333, PETRI_PLACES=69, PETRI_TRANSITIONS=36} [2021-03-24 19:52:27,558 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2021-03-24 19:52:27,558 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 36 transitions, 333 flow [2021-03-24 19:52:27,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,558 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:27,559 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:27,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 19:52:27,559 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:27,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:27,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1176687318, now seen corresponding path program 1 times [2021-03-24 19:52:27,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:27,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656458861] [2021-03-24 19:52:27,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:27,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:27,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:27,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:27,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:27,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656458861] [2021-03-24 19:52:27,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:27,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:52:27,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681805101] [2021-03-24 19:52:27,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:52:27,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:27,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:52:27,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:52:27,645 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 116 [2021-03-24 19:52:27,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 36 transitions, 333 flow. Second operand has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,647 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:27,647 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 116 [2021-03-24 19:52:27,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:27,682 INFO L129 PetriNetUnfolder]: 13/69 cut-off events. [2021-03-24 19:52:27,683 INFO L130 PetriNetUnfolder]: For 353/371 co-relation queries the response was YES. [2021-03-24 19:52:27,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 69 events. 13/69 cut-off events. For 353/371 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 206 event pairs, 0 based on Foata normal form. 6/73 useless extension candidates. Maximal degree in co-relation 323. Up to 30 conditions per place. [2021-03-24 19:52:27,685 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 4 selfloop transitions, 4 changer transitions 12/39 dead transitions. [2021-03-24 19:52:27,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 39 transitions, 416 flow [2021-03-24 19:52:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:52:27,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:52:27,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 454 transitions. [2021-03-24 19:52:27,687 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7827586206896552 [2021-03-24 19:52:27,687 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 454 transitions. [2021-03-24 19:52:27,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 454 transitions. [2021-03-24 19:52:27,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:27,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 454 transitions. [2021-03-24 19:52:27,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,690 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,690 INFO L185 Difference]: Start difference. First operand has 69 places, 36 transitions, 333 flow. Second operand 5 states and 454 transitions. [2021-03-24 19:52:27,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 39 transitions, 416 flow [2021-03-24 19:52:27,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 39 transitions, 339 flow, removed 19 selfloop flow, removed 9 redundant places. [2021-03-24 19:52:27,694 INFO L241 Difference]: Finished difference. Result has 64 places, 27 transitions, 192 flow [2021-03-24 19:52:27,694 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=64, PETRI_TRANSITIONS=27} [2021-03-24 19:52:27,694 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2021-03-24 19:52:27,694 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 27 transitions, 192 flow [2021-03-24 19:52:27,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,694 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:27,694 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:27,695 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 19:52:27,695 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:27,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:27,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1360864284, now seen corresponding path program 2 times [2021-03-24 19:52:27,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:27,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617109301] [2021-03-24 19:52:27,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:27,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:27,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:27,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:27,732 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:52:27,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:52:27,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:27,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:27,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617109301] [2021-03-24 19:52:27,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:27,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:52:27,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119199306] [2021-03-24 19:52:27,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:52:27,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:27,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:52:27,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:52:27,749 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 19:52:27,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 27 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:27,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 19:52:27,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:27,773 INFO L129 PetriNetUnfolder]: 5/29 cut-off events. [2021-03-24 19:52:27,773 INFO L130 PetriNetUnfolder]: For 86/87 co-relation queries the response was YES. [2021-03-24 19:52:27,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 29 events. 5/29 cut-off events. For 86/87 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 2/30 useless extension candidates. Maximal degree in co-relation 114. Up to 8 conditions per place. [2021-03-24 19:52:27,774 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2021-03-24 19:52:27,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 26 transitions, 204 flow [2021-03-24 19:52:27,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:52:27,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:52:27,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2021-03-24 19:52:27,776 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7266009852216748 [2021-03-24 19:52:27,776 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2021-03-24 19:52:27,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2021-03-24 19:52:27,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:27,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2021-03-24 19:52:27,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,779 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,779 INFO L185 Difference]: Start difference. First operand has 64 places, 27 transitions, 192 flow. Second operand 7 states and 590 transitions. [2021-03-24 19:52:27,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 26 transitions, 204 flow [2021-03-24 19:52:27,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 26 transitions, 134 flow, removed 9 selfloop flow, removed 20 redundant places. [2021-03-24 19:52:27,781 INFO L241 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2021-03-24 19:52:27,781 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2021-03-24 19:52:27,781 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2021-03-24 19:52:27,782 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2021-03-24 19:52:27,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:52:27,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 19:52:27,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:52:27 BasicIcfg [2021-03-24 19:52:27,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:52:27,788 INFO L168 Benchmark]: Toolchain (without parser) took 4799.45 ms. Allocated memory was 255.9 MB in the beginning and 425.7 MB in the end (delta: 169.9 MB). Free memory was 233.6 MB in the beginning and 184.3 MB in the end (delta: 49.3 MB). Peak memory consumption was 217.6 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:27,789 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:52:27,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.66 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 233.1 MB in the beginning and 318.5 MB in the end (delta: -85.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:27,791 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.23 ms. Allocated memory is still 354.4 MB. Free memory was 318.5 MB in the beginning and 316.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:27,791 INFO L168 Benchmark]: Boogie Preprocessor took 20.59 ms. Allocated memory is still 354.4 MB. Free memory was 316.8 MB in the beginning and 315.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:27,791 INFO L168 Benchmark]: RCFGBuilder took 571.62 ms. Allocated memory is still 354.4 MB. Free memory was 315.5 MB in the beginning and 334.0 MB in the end (delta: -18.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:27,792 INFO L168 Benchmark]: TraceAbstraction took 3712.13 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 333.2 MB in the beginning and 184.3 MB in the end (delta: 148.9 MB). Peak memory consumption was 218.9 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:27,793 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 453.66 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 233.1 MB in the beginning and 318.5 MB in the end (delta: -85.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 36.23 ms. Allocated memory is still 354.4 MB. Free memory was 318.5 MB in the beginning and 316.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.59 ms. Allocated memory is still 354.4 MB. Free memory was 316.8 MB in the beginning and 315.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 571.62 ms. Allocated memory is still 354.4 MB. Free memory was 315.5 MB in the beginning and 334.0 MB in the end (delta: -18.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3712.13 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 333.2 MB in the beginning and 184.3 MB in the end (delta: 148.9 MB). Peak memory consumption was 218.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1738.2ms, 69 PlacesBefore, 31 PlacesAfterwards, 60 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1328 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 680, positive: 633, positive conditional: 0, positive unconditional: 633, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 553, positive: 528, positive conditional: 0, positive unconditional: 528, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 553, positive: 528, positive conditional: 0, positive unconditional: 528, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 553, positive: 528, positive conditional: 0, positive unconditional: 528, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 97, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 97, negative conditional: 0, negative unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 680, positive: 105, positive conditional: 0, positive unconditional: 105, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 553, unknown conditional: 0, unknown unconditional: 553] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3593.0ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 826.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1849.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 74 SDtfs, 73 SDslu, 103 SDs, 0 SdLazy, 205 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 177.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 261.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=445occurred in iteration=4, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.0ms SsaConstructionTime, 187.9ms SatisfiabilityAnalysisTime, 512.5ms InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 682 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...