/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 00:46:13,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 00:46:13,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 00:46:13,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 00:46:13,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 00:46:13,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 00:46:13,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 00:46:13,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 00:46:13,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 00:46:13,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 00:46:13,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 00:46:13,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 00:46:13,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 00:46:13,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 00:46:13,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 00:46:13,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 00:46:13,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 00:46:13,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 00:46:13,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 00:46:13,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 00:46:13,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 00:46:13,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 00:46:13,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 00:46:13,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 00:46:13,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 00:46:13,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 00:46:13,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 00:46:13,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 00:46:13,732 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-RepeatedSemanticLbeWithPredicates.epf [2021-03-26 00:46:13,753 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 00:46:13,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 00:46:13,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 00:46:13,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 00:46:13,754 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 00:46:13,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 00:46:13,755 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 00:46:13,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 00:46:13,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 00:46:13,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 00:46:13,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 00:46:13,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 00:46:13,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 00:46:13,756 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 00:46:13,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 00:46:13,757 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 00:46:13,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 00:46:13,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 00:46:13,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 00:46:13,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 00:46:13,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 00:46:13,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 00:46:13,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 00:46:13,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 00:46:13,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 00:46:13,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 00:46:13,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 00:46:13,759 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 00:46:13,759 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 00:46:13,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 00:46:13,759 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 00:46:14,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 00:46:14,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 00:46:14,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 00:46:14,068 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 00:46:14,069 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 00:46:14,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2021-03-26 00:46:14,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab6bd615/1f86dce4712c4d188890f200a17c1229/FLAG94e355473 [2021-03-26 00:46:14,694 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 00:46:14,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2021-03-26 00:46:14,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab6bd615/1f86dce4712c4d188890f200a17c1229/FLAG94e355473 [2021-03-26 00:46:14,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab6bd615/1f86dce4712c4d188890f200a17c1229 [2021-03-26 00:46:15,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 00:46:15,003 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 00:46:15,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 00:46:15,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 00:46:15,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 00:46:15,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:46:15" (1/1) ... [2021-03-26 00:46:15,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76ba8b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:15, skipping insertion in model container [2021-03-26 00:46:15,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:46:15" (1/1) ... [2021-03-26 00:46:15,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 00:46:15,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 00:46:15,193 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/safe025_tso.oepc.i[950,963] [2021-03-26 00:46:15,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:46:15,348 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 00:46:15,360 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/safe025_tso.oepc.i[950,963] [2021-03-26 00:46:15,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:46:15,460 INFO L208 MainTranslator]: Completed translation [2021-03-26 00:46:15,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:15 WrapperNode [2021-03-26 00:46:15,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 00:46:15,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 00:46:15,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 00:46:15,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 00:46:15,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:15" (1/1) ... [2021-03-26 00:46:15,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:15" (1/1) ... [2021-03-26 00:46:15,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 00:46:15,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 00:46:15,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 00:46:15,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 00:46:15,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:15" (1/1) ... [2021-03-26 00:46:15,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:15" (1/1) ... [2021-03-26 00:46:15,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:15" (1/1) ... [2021-03-26 00:46:15,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:15" (1/1) ... [2021-03-26 00:46:15,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:15" (1/1) ... [2021-03-26 00:46:15,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:15" (1/1) ... [2021-03-26 00:46:15,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:15" (1/1) ... [2021-03-26 00:46:15,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 00:46:15,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 00:46:15,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 00:46:15,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 00:46:15,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:15" (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 [2021-03-26 00:46:15,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 00:46:15,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 00:46:15,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 00:46:15,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 00:46:15,647 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 00:46:15,647 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 00:46:15,648 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 00:46:15,648 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 00:46:15,648 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-26 00:46:15,648 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-26 00:46:15,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 00:46:15,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 00:46:15,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 00:46:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 00:46:15,650 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 00:46:16,084 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 00:46:16,085 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-26 00:46:16,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:46:16 BoogieIcfgContainer [2021-03-26 00:46:16,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 00:46:16,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 00:46:16,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 00:46:16,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 00:46:16,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 12:46:15" (1/3) ... [2021-03-26 00:46:16,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eda21f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:46:16, skipping insertion in model container [2021-03-26 00:46:16,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:15" (2/3) ... [2021-03-26 00:46:16,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eda21f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:46:16, skipping insertion in model container [2021-03-26 00:46:16,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:46:16" (3/3) ... [2021-03-26 00:46:16,095 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2021-03-26 00:46:16,101 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 00:46:16,104 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 00:46:16,105 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 00:46:16,138 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,138 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,138 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,139 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,139 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,139 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,139 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,139 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,139 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,140 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,140 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,140 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,141 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,141 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,141 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,141 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,141 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,141 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,142 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,142 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,142 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,142 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,142 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,142 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,144 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,145 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,145 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,145 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,145 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,146 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,146 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,146 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,147 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,148 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,148 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,148 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,149 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,149 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,150 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,150 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,153 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,154 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,154 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,154 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,159 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,160 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,160 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,160 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:16,162 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 00:46:16,178 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 00:46:16,206 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 00:46:16,206 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 00:46:16,206 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 00:46:16,206 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 00:46:16,206 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 00:46:16,206 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 00:46:16,206 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 00:46:16,207 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 00:46:16,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-26 00:46:16,269 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-26 00:46:16,269 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:46:16,273 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 54 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. [2021-03-26 00:46:16,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-26 00:46:16,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-26 00:46:16,286 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:16,298 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-26 00:46:16,301 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-26 00:46:16,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-26 00:46:16,325 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-26 00:46:16,325 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:46:16,326 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. [2021-03-26 00:46:16,329 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-26 00:46:17,949 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-26 00:46:18,112 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-26 00:46:18,194 INFO L154 LiptonReduction]: Checked pairs total: 1010 [2021-03-26 00:46:18,194 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-26 00:46:18,196 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1912 [2021-03-26 00:46:18,207 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-26 00:46:18,207 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:46:18,207 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:18,208 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:18,208 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:18,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:18,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1013680624, now seen corresponding path program 1 times [2021-03-26 00:46:18,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:18,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698295570] [2021-03-26 00:46:18,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:18,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:18,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:18,483 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-26 00:46:18,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 00:46:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:18,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698295570] [2021-03-26 00:46:18,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:18,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:46:18,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520763973] [2021-03-26 00:46:18,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:46:18,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:18,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:46:18,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:46:18,533 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 113 [2021-03-26 00:46:18,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2021-03-26 00:46:18,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:18,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 113 [2021-03-26 00:46:18,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:18,606 INFO L129 PetriNetUnfolder]: 44/126 cut-off events. [2021-03-26 00:46:18,607 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:46:18,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 126 events. 44/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 505 event pairs, 8 based on Foata normal form. 8/126 useless extension candidates. Maximal degree in co-relation 214. Up to 55 conditions per place. [2021-03-26 00:46:18,610 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 9 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2021-03-26 00:46:18,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 97 flow [2021-03-26 00:46:18,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:46:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:46:18,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2021-03-26 00:46:18,627 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8163716814159292 [2021-03-26 00:46:18,628 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 369 transitions. [2021-03-26 00:46:18,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 369 transitions. [2021-03-26 00:46:18,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:18,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 369 transitions. [2021-03-26 00:46:18,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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) [2021-03-26 00:46:18,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-26 00:46:18,650 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-26 00:46:18,652 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 4 states and 369 transitions. [2021-03-26 00:46:18,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 97 flow [2021-03-26 00:46:18,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 94 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-26 00:46:18,657 INFO L241 Difference]: Finished difference. Result has 35 places, 26 transitions, 94 flow [2021-03-26 00:46:18,659 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2021-03-26 00:46:18,659 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2021-03-26 00:46:18,659 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:18,660 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 26 transitions, 94 flow [2021-03-26 00:46:18,660 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 26 transitions, 94 flow [2021-03-26 00:46:18,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 26 transitions, 94 flow [2021-03-26 00:46:18,692 INFO L129 PetriNetUnfolder]: 44/128 cut-off events. [2021-03-26 00:46:18,693 INFO L130 PetriNetUnfolder]: For 40/42 co-relation queries the response was YES. [2021-03-26 00:46:18,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 128 events. 44/128 cut-off events. For 40/42 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 549 event pairs, 17 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 270. Up to 52 conditions per place. [2021-03-26 00:46:18,695 INFO L142 LiptonReduction]: Number of co-enabled transitions 186 [2021-03-26 00:46:19,221 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-26 00:46:19,433 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-26 00:46:19,532 INFO L154 LiptonReduction]: Checked pairs total: 123 [2021-03-26 00:46:19,532 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 00:46:19,532 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 873 [2021-03-26 00:46:19,535 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 84 flow [2021-03-26 00:46:19,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2021-03-26 00:46:19,535 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:19,535 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:19,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 00:46:19,536 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:19,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:19,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1359328769, now seen corresponding path program 1 times [2021-03-26 00:46:19,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:19,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453730396] [2021-03-26 00:46:19,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:19,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:19,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:46:19,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:19,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:19,653 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-26 00:46:19,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 00:46:19,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:19,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453730396] [2021-03-26 00:46:19,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:19,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:46:19,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380408465] [2021-03-26 00:46:19,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:46:19,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:19,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:46:19,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:46:19,669 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 118 [2021-03-26 00:46:19,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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) [2021-03-26 00:46:19,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:19,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 118 [2021-03-26 00:46:19,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:19,697 INFO L129 PetriNetUnfolder]: 32/100 cut-off events. [2021-03-26 00:46:19,697 INFO L130 PetriNetUnfolder]: For 55/74 co-relation queries the response was YES. [2021-03-26 00:46:19,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 100 events. 32/100 cut-off events. For 55/74 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 375 event pairs, 4 based on Foata normal form. 6/105 useless extension candidates. Maximal degree in co-relation 283. Up to 43 conditions per place. [2021-03-26 00:46:19,698 INFO L132 encePairwiseOnDemand]: 111/118 looper letters, 10 selfloop transitions, 9 changer transitions 0/29 dead transitions. [2021-03-26 00:46:19,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 162 flow [2021-03-26 00:46:19,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:46:19,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:46:19,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2021-03-26 00:46:19,700 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8029661016949152 [2021-03-26 00:46:19,700 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 379 transitions. [2021-03-26 00:46:19,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 379 transitions. [2021-03-26 00:46:19,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:19,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 379 transitions. [2021-03-26 00:46:19,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 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) [2021-03-26 00:46:19,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 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) [2021-03-26 00:46:19,703 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 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) [2021-03-26 00:46:19,704 INFO L185 Difference]: Start difference. First operand has 30 places, 21 transitions, 84 flow. Second operand 4 states and 379 transitions. [2021-03-26 00:46:19,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 162 flow [2021-03-26 00:46:19,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 00:46:19,706 INFO L241 Difference]: Finished difference. Result has 35 places, 26 transitions, 155 flow [2021-03-26 00:46:19,706 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2021-03-26 00:46:19,706 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2021-03-26 00:46:19,706 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:19,707 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 26 transitions, 155 flow [2021-03-26 00:46:19,707 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 26 transitions, 155 flow [2021-03-26 00:46:19,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 26 transitions, 155 flow [2021-03-26 00:46:19,715 INFO L129 PetriNetUnfolder]: 32/101 cut-off events. [2021-03-26 00:46:19,715 INFO L130 PetriNetUnfolder]: For 129/135 co-relation queries the response was YES. [2021-03-26 00:46:19,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 101 events. 32/101 cut-off events. For 129/135 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 403 event pairs, 11 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 307. Up to 41 conditions per place. [2021-03-26 00:46:19,717 INFO L142 LiptonReduction]: Number of co-enabled transitions 158 [2021-03-26 00:46:19,734 INFO L154 LiptonReduction]: Checked pairs total: 108 [2021-03-26 00:46:19,735 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:46:19,735 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-26 00:46:19,736 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 155 flow [2021-03-26 00:46:19,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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) [2021-03-26 00:46:19,736 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:19,737 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:19,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 00:46:19,737 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:19,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:19,737 INFO L82 PathProgramCache]: Analyzing trace with hash 20503259, now seen corresponding path program 1 times [2021-03-26 00:46:19,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:19,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132668678] [2021-03-26 00:46:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:19,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:19,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:46:19,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:19,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:19,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:19,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132668678] [2021-03-26 00:46:19,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:19,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:46:19,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856934301] [2021-03-26 00:46:19,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 00:46:19,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:19,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 00:46:19,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 00:46:19,776 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 118 [2021-03-26 00:46:19,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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) [2021-03-26 00:46:19,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:19,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 118 [2021-03-26 00:46:19,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:19,795 INFO L129 PetriNetUnfolder]: 23/79 cut-off events. [2021-03-26 00:46:19,795 INFO L130 PetriNetUnfolder]: For 173/206 co-relation queries the response was YES. [2021-03-26 00:46:19,796 INFO L84 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 79 events. 23/79 cut-off events. For 173/206 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 280 event pairs, 2 based on Foata normal form. 8/86 useless extension candidates. Maximal degree in co-relation 285. Up to 29 conditions per place. [2021-03-26 00:46:19,797 INFO L132 encePairwiseOnDemand]: 115/118 looper letters, 11 selfloop transitions, 5 changer transitions 0/29 dead transitions. [2021-03-26 00:46:19,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 212 flow [2021-03-26 00:46:19,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:46:19,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:46:19,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2021-03-26 00:46:19,799 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728813559322034 [2021-03-26 00:46:19,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2021-03-26 00:46:19,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2021-03-26 00:46:19,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:19,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2021-03-26 00:46:19,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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) [2021-03-26 00:46:19,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 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) [2021-03-26 00:46:19,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 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) [2021-03-26 00:46:19,802 INFO L185 Difference]: Start difference. First operand has 35 places, 26 transitions, 155 flow. Second operand 3 states and 309 transitions. [2021-03-26 00:46:19,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 212 flow [2021-03-26 00:46:19,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 209 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 00:46:19,816 INFO L241 Difference]: Finished difference. Result has 37 places, 26 transitions, 169 flow [2021-03-26 00:46:19,816 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2021-03-26 00:46:19,816 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2021-03-26 00:46:19,816 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:19,817 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 26 transitions, 169 flow [2021-03-26 00:46:19,818 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 26 transitions, 169 flow [2021-03-26 00:46:19,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 26 transitions, 169 flow [2021-03-26 00:46:19,825 INFO L129 PetriNetUnfolder]: 23/84 cut-off events. [2021-03-26 00:46:19,825 INFO L130 PetriNetUnfolder]: For 142/150 co-relation queries the response was YES. [2021-03-26 00:46:19,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 84 events. 23/84 cut-off events. For 142/150 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 319 event pairs, 6 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 280. Up to 28 conditions per place. [2021-03-26 00:46:19,828 INFO L142 LiptonReduction]: Number of co-enabled transitions 158 [2021-03-26 00:46:19,831 INFO L154 LiptonReduction]: Checked pairs total: 108 [2021-03-26 00:46:19,831 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:46:19,831 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-03-26 00:46:19,836 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 169 flow [2021-03-26 00:46:19,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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) [2021-03-26 00:46:19,836 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:19,836 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:19,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 00:46:19,836 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:19,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:19,837 INFO L82 PathProgramCache]: Analyzing trace with hash 673022833, now seen corresponding path program 1 times [2021-03-26 00:46:19,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:19,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876972594] [2021-03-26 00:46:19,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:19,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:19,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:19,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:19,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:46:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:19,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876972594] [2021-03-26 00:46:19,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:19,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:46:19,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322846879] [2021-03-26 00:46:19,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 00:46:19,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:19,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 00:46:19,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 00:46:19,905 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 118 [2021-03-26 00:46:19,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2021-03-26 00:46:19,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:19,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 118 [2021-03-26 00:46:19,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:19,935 INFO L129 PetriNetUnfolder]: 74/188 cut-off events. [2021-03-26 00:46:19,935 INFO L130 PetriNetUnfolder]: For 219/230 co-relation queries the response was YES. [2021-03-26 00:46:19,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 188 events. 74/188 cut-off events. For 219/230 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 933 event pairs, 27 based on Foata normal form. 3/176 useless extension candidates. Maximal degree in co-relation 534. Up to 118 conditions per place. [2021-03-26 00:46:19,938 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 4 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2021-03-26 00:46:19,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 191 flow [2021-03-26 00:46:19,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:46:19,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:46:19,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2021-03-26 00:46:19,940 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8305084745762712 [2021-03-26 00:46:19,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2021-03-26 00:46:19,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2021-03-26 00:46:19,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:19,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2021-03-26 00:46:19,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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) [2021-03-26 00:46:19,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 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) [2021-03-26 00:46:19,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 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) [2021-03-26 00:46:19,942 INFO L185 Difference]: Start difference. First operand has 37 places, 26 transitions, 169 flow. Second operand 3 states and 294 transitions. [2021-03-26 00:46:19,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 191 flow [2021-03-26 00:46:19,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 00:46:19,947 INFO L241 Difference]: Finished difference. Result has 38 places, 29 transitions, 185 flow [2021-03-26 00:46:19,948 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=38, PETRI_TRANSITIONS=29} [2021-03-26 00:46:19,948 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2021-03-26 00:46:19,948 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:19,948 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 29 transitions, 185 flow [2021-03-26 00:46:19,951 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 29 transitions, 185 flow [2021-03-26 00:46:19,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 29 transitions, 185 flow [2021-03-26 00:46:19,967 INFO L129 PetriNetUnfolder]: 77/199 cut-off events. [2021-03-26 00:46:19,968 INFO L130 PetriNetUnfolder]: For 176/186 co-relation queries the response was YES. [2021-03-26 00:46:19,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 199 events. 77/199 cut-off events. For 176/186 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1013 event pairs, 26 based on Foata normal form. 2/192 useless extension candidates. Maximal degree in co-relation 563. Up to 126 conditions per place. [2021-03-26 00:46:19,970 INFO L142 LiptonReduction]: Number of co-enabled transitions 194 [2021-03-26 00:46:19,973 INFO L154 LiptonReduction]: Checked pairs total: 38 [2021-03-26 00:46:19,974 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:46:19,974 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-03-26 00:46:19,976 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 185 flow [2021-03-26 00:46:19,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2021-03-26 00:46:19,977 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:19,977 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:19,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 00:46:19,977 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:19,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:19,978 INFO L82 PathProgramCache]: Analyzing trace with hash -419209750, now seen corresponding path program 1 times [2021-03-26 00:46:19,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:19,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433494409] [2021-03-26 00:46:19,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:20,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:20,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:20,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:20,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:20,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:20,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:46:20,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:20,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433494409] [2021-03-26 00:46:20,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:20,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:46:20,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582386606] [2021-03-26 00:46:20,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:46:20,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:20,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:46:20,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:46:20,062 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 118 [2021-03-26 00:46:20,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 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) [2021-03-26 00:46:20,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:20,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 118 [2021-03-26 00:46:20,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:20,097 INFO L129 PetriNetUnfolder]: 44/130 cut-off events. [2021-03-26 00:46:20,098 INFO L130 PetriNetUnfolder]: For 162/205 co-relation queries the response was YES. [2021-03-26 00:46:20,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 130 events. 44/130 cut-off events. For 162/205 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 548 event pairs, 7 based on Foata normal form. 39/164 useless extension candidates. Maximal degree in co-relation 462. Up to 70 conditions per place. [2021-03-26 00:46:20,099 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 4 selfloop transitions, 7 changer transitions 0/32 dead transitions. [2021-03-26 00:46:20,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 219 flow [2021-03-26 00:46:20,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:46:20,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:46:20,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 392 transitions. [2021-03-26 00:46:20,101 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8305084745762712 [2021-03-26 00:46:20,101 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 392 transitions. [2021-03-26 00:46:20,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 392 transitions. [2021-03-26 00:46:20,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:20,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 392 transitions. [2021-03-26 00:46:20,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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) [2021-03-26 00:46:20,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 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) [2021-03-26 00:46:20,104 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 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) [2021-03-26 00:46:20,104 INFO L185 Difference]: Start difference. First operand has 38 places, 29 transitions, 185 flow. Second operand 4 states and 392 transitions. [2021-03-26 00:46:20,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 219 flow [2021-03-26 00:46:20,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 00:46:20,106 INFO L241 Difference]: Finished difference. Result has 41 places, 32 transitions, 221 flow [2021-03-26 00:46:20,107 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2021-03-26 00:46:20,107 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2021-03-26 00:46:20,107 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:20,107 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 32 transitions, 221 flow [2021-03-26 00:46:20,107 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 32 transitions, 221 flow [2021-03-26 00:46:20,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 32 transitions, 221 flow [2021-03-26 00:46:20,127 INFO L129 PetriNetUnfolder]: 44/134 cut-off events. [2021-03-26 00:46:20,127 INFO L130 PetriNetUnfolder]: For 183/204 co-relation queries the response was YES. [2021-03-26 00:46:20,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 134 events. 44/134 cut-off events. For 183/204 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 581 event pairs, 6 based on Foata normal form. 9/139 useless extension candidates. Maximal degree in co-relation 483. Up to 74 conditions per place. [2021-03-26 00:46:20,129 INFO L142 LiptonReduction]: Number of co-enabled transitions 184 [2021-03-26 00:46:20,131 INFO L154 LiptonReduction]: Checked pairs total: 38 [2021-03-26 00:46:20,131 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:46:20,131 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 24 [2021-03-26 00:46:20,134 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 221 flow [2021-03-26 00:46:20,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 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) [2021-03-26 00:46:20,135 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:20,135 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:20,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 00:46:20,135 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:20,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:20,136 INFO L82 PathProgramCache]: Analyzing trace with hash -2125959514, now seen corresponding path program 1 times [2021-03-26 00:46:20,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:20,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74159456] [2021-03-26 00:46:20,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:20,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:20,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:20,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:20,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:20,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:20,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:20,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:20,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:46:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:20,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74159456] [2021-03-26 00:46:20,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:20,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:46:20,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271807777] [2021-03-26 00:46:20,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:46:20,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:20,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:46:20,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:46:20,206 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 118 [2021-03-26 00:46:20,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 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) [2021-03-26 00:46:20,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:20,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 118 [2021-03-26 00:46:20,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:20,234 INFO L129 PetriNetUnfolder]: 36/103 cut-off events. [2021-03-26 00:46:20,235 INFO L130 PetriNetUnfolder]: For 245/324 co-relation queries the response was YES. [2021-03-26 00:46:20,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 103 events. 36/103 cut-off events. For 245/324 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 385 event pairs, 3 based on Foata normal form. 56/155 useless extension candidates. Maximal degree in co-relation 426. Up to 50 conditions per place. [2021-03-26 00:46:20,236 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 1 selfloop transitions, 10 changer transitions 0/32 dead transitions. [2021-03-26 00:46:20,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 32 transitions, 243 flow [2021-03-26 00:46:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:46:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:46:20,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 487 transitions. [2021-03-26 00:46:20,238 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8254237288135593 [2021-03-26 00:46:20,238 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 487 transitions. [2021-03-26 00:46:20,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 487 transitions. [2021-03-26 00:46:20,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:20,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 487 transitions. [2021-03-26 00:46:20,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 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) [2021-03-26 00:46:20,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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) [2021-03-26 00:46:20,241 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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) [2021-03-26 00:46:20,241 INFO L185 Difference]: Start difference. First operand has 41 places, 32 transitions, 221 flow. Second operand 5 states and 487 transitions. [2021-03-26 00:46:20,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 32 transitions, 243 flow [2021-03-26 00:46:20,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 212 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-26 00:46:20,244 INFO L241 Difference]: Finished difference. Result has 41 places, 32 transitions, 218 flow [2021-03-26 00:46:20,244 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2021-03-26 00:46:20,244 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2021-03-26 00:46:20,244 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:20,244 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 32 transitions, 218 flow [2021-03-26 00:46:20,245 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 32 transitions, 218 flow [2021-03-26 00:46:20,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 32 transitions, 218 flow [2021-03-26 00:46:20,253 INFO L129 PetriNetUnfolder]: 37/107 cut-off events. [2021-03-26 00:46:20,253 INFO L130 PetriNetUnfolder]: For 167/176 co-relation queries the response was YES. [2021-03-26 00:46:20,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 107 events. 37/107 cut-off events. For 167/176 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 423 event pairs, 3 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 370. Up to 35 conditions per place. [2021-03-26 00:46:20,254 INFO L142 LiptonReduction]: Number of co-enabled transitions 156 [2021-03-26 00:46:20,335 INFO L154 LiptonReduction]: Checked pairs total: 68 [2021-03-26 00:46:20,336 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 00:46:20,336 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 92 [2021-03-26 00:46:20,337 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 216 flow [2021-03-26 00:46:20,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 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) [2021-03-26 00:46:20,338 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:20,338 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:20,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 00:46:20,338 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:20,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:20,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1111036189, now seen corresponding path program 1 times [2021-03-26 00:46:20,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:20,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676112508] [2021-03-26 00:46:20,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:20,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:20,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:46:20,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:20,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:20,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:20,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:20,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676112508] [2021-03-26 00:46:20,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:20,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:46:20,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534369300] [2021-03-26 00:46:20,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:46:20,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:20,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:46:20,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:46:20,374 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 119 [2021-03-26 00:46:20,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 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) [2021-03-26 00:46:20,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:20,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 119 [2021-03-26 00:46:20,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:20,414 INFO L129 PetriNetUnfolder]: 44/125 cut-off events. [2021-03-26 00:46:20,414 INFO L130 PetriNetUnfolder]: For 419/489 co-relation queries the response was YES. [2021-03-26 00:46:20,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 125 events. 44/125 cut-off events. For 419/489 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 526 event pairs, 0 based on Foata normal form. 21/141 useless extension candidates. Maximal degree in co-relation 482. Up to 43 conditions per place. [2021-03-26 00:46:20,416 INFO L132 encePairwiseOnDemand]: 115/119 looper letters, 9 selfloop transitions, 5 changer transitions 7/39 dead transitions. [2021-03-26 00:46:20,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 320 flow [2021-03-26 00:46:20,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:46:20,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:46:20,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 487 transitions. [2021-03-26 00:46:20,418 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8184873949579832 [2021-03-26 00:46:20,418 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 487 transitions. [2021-03-26 00:46:20,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 487 transitions. [2021-03-26 00:46:20,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:20,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 487 transitions. [2021-03-26 00:46:20,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 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) [2021-03-26 00:46:20,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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) [2021-03-26 00:46:20,420 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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) [2021-03-26 00:46:20,421 INFO L185 Difference]: Start difference. First operand has 40 places, 31 transitions, 216 flow. Second operand 5 states and 487 transitions. [2021-03-26 00:46:20,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 320 flow [2021-03-26 00:46:20,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 294 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-26 00:46:20,424 INFO L241 Difference]: Finished difference. Result has 43 places, 31 transitions, 211 flow [2021-03-26 00:46:20,424 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=211, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2021-03-26 00:46:20,424 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2021-03-26 00:46:20,424 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:20,424 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 31 transitions, 211 flow [2021-03-26 00:46:20,425 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 31 transitions, 211 flow [2021-03-26 00:46:20,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 31 transitions, 211 flow [2021-03-26 00:46:20,435 INFO L129 PetriNetUnfolder]: 31/95 cut-off events. [2021-03-26 00:46:20,435 INFO L130 PetriNetUnfolder]: For 202/218 co-relation queries the response was YES. [2021-03-26 00:46:20,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 95 events. 31/95 cut-off events. For 202/218 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 403 event pairs, 2 based on Foata normal form. 7/98 useless extension candidates. Maximal degree in co-relation 327. Up to 26 conditions per place. [2021-03-26 00:46:20,436 INFO L142 LiptonReduction]: Number of co-enabled transitions 154 [2021-03-26 00:46:20,439 INFO L154 LiptonReduction]: Checked pairs total: 68 [2021-03-26 00:46:20,439 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:46:20,439 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-03-26 00:46:20,441 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 211 flow [2021-03-26 00:46:20,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 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) [2021-03-26 00:46:20,441 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:20,441 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:20,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 00:46:20,442 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:20,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:20,442 INFO L82 PathProgramCache]: Analyzing trace with hash 552557885, now seen corresponding path program 1 times [2021-03-26 00:46:20,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:20,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125538930] [2021-03-26 00:46:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:20,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:20,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:46:20,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:20,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:20,513 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-26 00:46:20,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 00:46:20,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:20,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125538930] [2021-03-26 00:46:20,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:20,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:46:20,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692552498] [2021-03-26 00:46:20,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:46:20,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:20,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:46:20,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:46:20,527 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 119 [2021-03-26 00:46:20,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 211 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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) [2021-03-26 00:46:20,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:20,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 119 [2021-03-26 00:46:20,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:20,579 INFO L129 PetriNetUnfolder]: 51/137 cut-off events. [2021-03-26 00:46:20,580 INFO L130 PetriNetUnfolder]: For 562/635 co-relation queries the response was YES. [2021-03-26 00:46:20,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 137 events. 51/137 cut-off events. For 562/635 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 576 event pairs, 0 based on Foata normal form. 20/153 useless extension candidates. Maximal degree in co-relation 530. Up to 32 conditions per place. [2021-03-26 00:46:20,581 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 8 selfloop transitions, 11 changer transitions 14/47 dead transitions. [2021-03-26 00:46:20,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 412 flow [2021-03-26 00:46:20,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:46:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:46:20,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 463 transitions. [2021-03-26 00:46:20,583 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7781512605042017 [2021-03-26 00:46:20,583 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 463 transitions. [2021-03-26 00:46:20,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 463 transitions. [2021-03-26 00:46:20,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:20,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 463 transitions. [2021-03-26 00:46:20,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.6) internal successors, (463), 5 states have internal predecessors, (463), 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) [2021-03-26 00:46:20,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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) [2021-03-26 00:46:20,586 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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) [2021-03-26 00:46:20,586 INFO L185 Difference]: Start difference. First operand has 41 places, 31 transitions, 211 flow. Second operand 5 states and 463 transitions. [2021-03-26 00:46:20,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 412 flow [2021-03-26 00:46:20,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 386 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-26 00:46:20,589 INFO L241 Difference]: Finished difference. Result has 46 places, 33 transitions, 255 flow [2021-03-26 00:46:20,589 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2021-03-26 00:46:20,590 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2021-03-26 00:46:20,590 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:20,590 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 33 transitions, 255 flow [2021-03-26 00:46:20,590 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 33 transitions, 255 flow [2021-03-26 00:46:20,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 33 transitions, 255 flow [2021-03-26 00:46:20,597 INFO L129 PetriNetUnfolder]: 24/84 cut-off events. [2021-03-26 00:46:20,597 INFO L130 PetriNetUnfolder]: For 220/237 co-relation queries the response was YES. [2021-03-26 00:46:20,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 84 events. 24/84 cut-off events. For 220/237 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 322 event pairs, 0 based on Foata normal form. 6/88 useless extension candidates. Maximal degree in co-relation 314. Up to 22 conditions per place. [2021-03-26 00:46:20,598 INFO L142 LiptonReduction]: Number of co-enabled transitions 88 [2021-03-26 00:46:20,600 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:46:20,600 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:46:20,600 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-26 00:46:20,601 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 255 flow [2021-03-26 00:46:20,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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) [2021-03-26 00:46:20,602 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:20,602 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:20,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 00:46:20,602 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:20,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:20,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1452427877, now seen corresponding path program 2 times [2021-03-26 00:46:20,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:20,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882866462] [2021-03-26 00:46:20,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:20,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:20,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:46:20,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:20,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:20,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:20,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:20,659 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-26 00:46:20,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 00:46:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:20,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882866462] [2021-03-26 00:46:20,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:20,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:46:20,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502065094] [2021-03-26 00:46:20,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:46:20,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:20,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:46:20,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:46:20,677 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 119 [2021-03-26 00:46:20,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 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) [2021-03-26 00:46:20,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:20,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 119 [2021-03-26 00:46:20,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:20,709 INFO L129 PetriNetUnfolder]: 28/101 cut-off events. [2021-03-26 00:46:20,709 INFO L130 PetriNetUnfolder]: For 310/348 co-relation queries the response was YES. [2021-03-26 00:46:20,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 101 events. 28/101 cut-off events. For 310/348 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 428 event pairs, 0 based on Foata normal form. 13/111 useless extension candidates. Maximal degree in co-relation 405. Up to 30 conditions per place. [2021-03-26 00:46:20,710 INFO L132 encePairwiseOnDemand]: 112/119 looper letters, 5 selfloop transitions, 11 changer transitions 3/35 dead transitions. [2021-03-26 00:46:20,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 35 transitions, 312 flow [2021-03-26 00:46:20,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 00:46:20,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 00:46:20,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 561 transitions. [2021-03-26 00:46:20,712 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2021-03-26 00:46:20,712 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 561 transitions. [2021-03-26 00:46:20,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 561 transitions. [2021-03-26 00:46:20,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:20,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 561 transitions. [2021-03-26 00:46:20,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 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) [2021-03-26 00:46:20,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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) [2021-03-26 00:46:20,716 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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) [2021-03-26 00:46:20,716 INFO L185 Difference]: Start difference. First operand has 46 places, 33 transitions, 255 flow. Second operand 6 states and 561 transitions. [2021-03-26 00:46:20,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 35 transitions, 312 flow [2021-03-26 00:46:20,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 35 transitions, 301 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-26 00:46:20,720 INFO L241 Difference]: Finished difference. Result has 50 places, 32 transitions, 257 flow [2021-03-26 00:46:20,720 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=50, PETRI_TRANSITIONS=32} [2021-03-26 00:46:20,721 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2021-03-26 00:46:20,721 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:20,721 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 32 transitions, 257 flow [2021-03-26 00:46:20,721 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 32 transitions, 257 flow [2021-03-26 00:46:20,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 32 transitions, 257 flow [2021-03-26 00:46:20,728 INFO L129 PetriNetUnfolder]: 22/80 cut-off events. [2021-03-26 00:46:20,729 INFO L130 PetriNetUnfolder]: For 251/262 co-relation queries the response was YES. [2021-03-26 00:46:20,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 80 events. 22/80 cut-off events. For 251/262 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 290 event pairs, 0 based on Foata normal form. 5/82 useless extension candidates. Maximal degree in co-relation 309. Up to 22 conditions per place. [2021-03-26 00:46:20,730 INFO L142 LiptonReduction]: Number of co-enabled transitions 86 [2021-03-26 00:46:20,732 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:46:20,732 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:46:20,732 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-26 00:46:20,733 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 32 transitions, 257 flow [2021-03-26 00:46:20,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 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) [2021-03-26 00:46:20,733 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:20,733 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:20,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 00:46:20,733 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:20,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:20,734 INFO L82 PathProgramCache]: Analyzing trace with hash -660039517, now seen corresponding path program 3 times [2021-03-26 00:46:20,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:20,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684519713] [2021-03-26 00:46:20,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:20,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:20,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:20,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:20,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:20,791 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-26 00:46:20,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 00:46:20,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:20,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684519713] [2021-03-26 00:46:20,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:20,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:46:20,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926835508] [2021-03-26 00:46:20,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:46:20,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:20,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:46:20,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:46:20,809 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 119 [2021-03-26 00:46:20,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 257 flow. Second operand has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 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) [2021-03-26 00:46:20,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:20,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 119 [2021-03-26 00:46:20,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:20,829 INFO L129 PetriNetUnfolder]: 22/79 cut-off events. [2021-03-26 00:46:20,829 INFO L130 PetriNetUnfolder]: For 311/334 co-relation queries the response was YES. [2021-03-26 00:46:20,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 79 events. 22/79 cut-off events. For 311/334 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 289 event pairs, 0 based on Foata normal form. 9/86 useless extension candidates. Maximal degree in co-relation 340. Up to 21 conditions per place. [2021-03-26 00:46:20,830 INFO L132 encePairwiseOnDemand]: 116/119 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2021-03-26 00:46:20,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 32 transitions, 283 flow [2021-03-26 00:46:20,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:46:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:46:20,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2021-03-26 00:46:20,831 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7815126050420168 [2021-03-26 00:46:20,831 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2021-03-26 00:46:20,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2021-03-26 00:46:20,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:20,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2021-03-26 00:46:20,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-03-26 00:46:20,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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) [2021-03-26 00:46:20,833 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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) [2021-03-26 00:46:20,833 INFO L185 Difference]: Start difference. First operand has 48 places, 32 transitions, 257 flow. Second operand 4 states and 372 transitions. [2021-03-26 00:46:20,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 32 transitions, 283 flow [2021-03-26 00:46:20,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 32 transitions, 234 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-03-26 00:46:20,836 INFO L241 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2021-03-26 00:46:20,837 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2021-03-26 00:46:20,837 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2021-03-26 00:46:20,837 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:20,837 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 0 transitions, 0 flow [2021-03-26 00:46:20,837 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 0 transitions, 0 flow [2021-03-26 00:46:20,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 00:46:20,838 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 00:46:20,838 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:46:20,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-26 00:46:20,838 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 00:46:20,838 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:46:20,838 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:46:20,838 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 00:46:20,839 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 00:46:20,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 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) [2021-03-26 00:46:20,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 00:46:20,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 12:46:20 BasicIcfg [2021-03-26 00:46:20,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 00:46:20,844 INFO L168 Benchmark]: Toolchain (without parser) took 5840.57 ms. Allocated memory was 255.9 MB in the beginning and 427.8 MB in the end (delta: 172.0 MB). Free memory was 233.8 MB in the beginning and 212.2 MB in the end (delta: 21.5 MB). Peak memory consumption was 193.5 MB. Max. memory is 16.0 GB. [2021-03-26 00:46:20,844 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:46:20,844 INFO L168 Benchmark]: CACSL2BoogieTranslator took 454.24 ms. Allocated memory was 255.9 MB in the beginning and 356.5 MB in the end (delta: 100.7 MB). Free memory was 233.8 MB in the beginning and 320.6 MB in the end (delta: -86.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-26 00:46:20,845 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.30 ms. Allocated memory is still 356.5 MB. Free memory was 320.6 MB in the beginning and 318.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:46:20,845 INFO L168 Benchmark]: Boogie Preprocessor took 32.11 ms. Allocated memory is still 356.5 MB. Free memory was 318.8 MB in the beginning and 317.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:46:20,845 INFO L168 Benchmark]: RCFGBuilder took 530.03 ms. Allocated memory is still 356.5 MB. Free memory was 317.4 MB in the beginning and 335.6 MB in the end (delta: -18.2 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.0 GB. [2021-03-26 00:46:20,846 INFO L168 Benchmark]: TraceAbstraction took 4754.26 ms. Allocated memory was 356.5 MB in the beginning and 427.8 MB in the end (delta: 71.3 MB). Free memory was 334.9 MB in the beginning and 212.2 MB in the end (delta: 122.6 MB). Peak memory consumption was 192.5 MB. Max. memory is 16.0 GB. [2021-03-26 00:46:20,847 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 454.24 ms. Allocated memory was 255.9 MB in the beginning and 356.5 MB in the end (delta: 100.7 MB). Free memory was 233.8 MB in the beginning and 320.6 MB in the end (delta: -86.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 61.30 ms. Allocated memory is still 356.5 MB. Free memory was 320.6 MB in the beginning and 318.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.11 ms. Allocated memory is still 356.5 MB. Free memory was 318.8 MB in the beginning and 317.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 530.03 ms. Allocated memory is still 356.5 MB. Free memory was 317.4 MB in the beginning and 335.6 MB in the end (delta: -18.2 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4754.26 ms. Allocated memory was 356.5 MB in the beginning and 427.8 MB in the end (delta: 71.3 MB). Free memory was 334.9 MB in the beginning and 212.2 MB in the end (delta: 122.6 MB). Peak memory consumption was 192.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1893.1ms, 69 PlacesBefore, 32 PlacesAfterwards, 60 TransitionsBefore, 22 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1010 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 751, positive: 715, positive conditional: 715, positive unconditional: 0, negative: 36, negative conditional: 36, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 562, positive: 544, positive conditional: 0, positive unconditional: 544, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 562, positive: 544, positive conditional: 0, positive unconditional: 544, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 562, positive: 536, positive conditional: 0, positive unconditional: 536, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 112, positive: 42, positive conditional: 0, positive unconditional: 42, negative: 71, negative conditional: 0, negative unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 751, positive: 171, positive conditional: 171, positive unconditional: 0, negative: 18, negative conditional: 18, negative unconditional: 0, unknown: 562, unknown conditional: 562, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 48, Positive conditional cache size: 48, Positive unconditional cache size: 0, Negative cache size: 7, Negative conditional cache size: 7, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 872.1ms, 35 PlacesBefore, 30 PlacesAfterwards, 26 TransitionsBefore, 21 TransitionsAfterwards, 186 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 123 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 62, positive: 55, positive conditional: 55, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 52, positive: 48, positive conditional: 10, positive unconditional: 38, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 52, positive: 48, positive conditional: 10, positive unconditional: 38, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 52, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 29, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 62, positive: 7, positive conditional: 7, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 52, unknown conditional: 52, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 51, Positive conditional cache size: 51, Positive unconditional cache size: 0, Negative cache size: 9, Negative conditional cache size: 9, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27.8ms, 35 PlacesBefore, 35 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 158 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 108 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 87, positive: 80, positive conditional: 80, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 34, positive: 32, positive conditional: 13, positive unconditional: 19, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 34, positive: 32, positive conditional: 13, positive unconditional: 19, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 34, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 13, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 7, negative conditional: 4, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 87, positive: 48, positive conditional: 48, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 34, unknown conditional: 34, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 94, Positive cache size: 83, Positive conditional cache size: 83, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.1ms, 37 PlacesBefore, 37 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 158 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 108 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 97, positive: 90, positive conditional: 90, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 8, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 8, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 97, positive: 72, positive conditional: 72, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 18, unknown conditional: 18, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 101, Positive conditional cache size: 101, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 22.9ms, 38 PlacesBefore, 38 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 194 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 38 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 20, positive: 18, positive conditional: 18, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 1, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 1, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 20, positive: 14, positive conditional: 14, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 105, Positive conditional cache size: 105, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23.9ms, 41 PlacesBefore, 41 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 184 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 38 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 26, positive: 24, positive conditional: 24, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 3, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 3, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 26, positive: 20, positive conditional: 20, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 120, Positive cache size: 109, Positive conditional cache size: 109, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 91.2ms, 41 PlacesBefore, 40 PlacesAfterwards, 32 TransitionsBefore, 31 TransitionsAfterwards, 156 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 68 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 36, positive: 32, positive conditional: 32, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 2, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 2, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 36, positive: 29, positive conditional: 29, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 105, Positive cache size: 99, Positive conditional cache size: 99, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.4ms, 43 PlacesBefore, 41 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 154 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 68 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 56, positive: 52, positive conditional: 52, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 5, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 5, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 56, positive: 45, positive conditional: 45, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 7, unknown conditional: 7, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 106, Positive conditional cache size: 106, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.0ms, 46 PlacesBefore, 46 PlacesAfterwards, 33 TransitionsBefore, 33 TransitionsAfterwards, 88 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 106, Positive conditional cache size: 106, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.0ms, 50 PlacesBefore, 48 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 86 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 106, Positive conditional cache size: 106, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7ms, 44 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 106, Positive conditional cache size: 106, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - 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: 4.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4639.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 535.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1995.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 52 SDtfs, 24 SDslu, 19 SDs, 0 SdLazy, 111 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 122.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=9, InterpolantAutomatonStates: 43, 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: 23.0ms SsaConstructionTime, 198.2ms SatisfiabilityAnalysisTime, 583.7ms InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 651 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...