/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin001_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:13:19,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:13:19,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:13:19,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:13:19,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:13:19,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:13:19,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:13:19,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:13:19,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:13:19,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:13:19,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:13:19,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:13:19,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:13:19,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:13:19,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:13:19,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:13:19,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:13:19,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:13:19,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:13:19,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:13:19,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:13:19,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:13:19,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:13:19,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:13:19,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 05:13:19,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:13:19,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:13:19,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:13:19,869 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-RepeatedVariableLbe.epf [2021-03-25 05:13:19,897 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:13:19,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:13:19,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:13:19,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:13:19,898 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:13:19,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:13:19,899 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:13:19,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:13:19,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:13:19,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:13:19,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:13:19,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:13:19,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:13:19,899 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:13:19,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:13:19,900 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:13:19,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:13:19,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:13:19,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:13:19,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:13:19,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:13:19,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:13:19,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:13:19,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:13:19,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:13:19,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:13:19,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:13:19,901 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:13:19,902 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:13:19,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:13:19,902 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:13:20,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:13:20,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:13:20,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:13:20,208 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:13:20,208 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:13:20,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin001_pso.oepc.i [2021-03-25 05:13:20,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ef2d0d83/a02db9468a714ac88a8913d179f9f8f7/FLAG2098ada1e [2021-03-25 05:13:20,820 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:13:20,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin001_pso.oepc.i [2021-03-25 05:13:20,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ef2d0d83/a02db9468a714ac88a8913d179f9f8f7/FLAG2098ada1e [2021-03-25 05:13:21,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ef2d0d83/a02db9468a714ac88a8913d179f9f8f7 [2021-03-25 05:13:21,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:13:21,102 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:13:21,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:13:21,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:13:21,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:13:21,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:13:21" (1/1) ... [2021-03-25 05:13:21,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@391583d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:21, skipping insertion in model container [2021-03-25 05:13:21,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:13:21" (1/1) ... [2021-03-25 05:13:21,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:13:21,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:13:21,385 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/thin001_pso.oepc.i[950,963] [2021-03-25 05:13:21,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:13:21,558 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:13:21,569 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/thin001_pso.oepc.i[950,963] [2021-03-25 05:13:21,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:13:21,677 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:13:21,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:21 WrapperNode [2021-03-25 05:13:21,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:13:21,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:13:21,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:13:21,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:13:21,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:21" (1/1) ... [2021-03-25 05:13:21,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:21" (1/1) ... [2021-03-25 05:13:21,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:13:21,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:13:21,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:13:21,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:13:21,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:21" (1/1) ... [2021-03-25 05:13:21,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:21" (1/1) ... [2021-03-25 05:13:21,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:21" (1/1) ... [2021-03-25 05:13:21,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:21" (1/1) ... [2021-03-25 05:13:21,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:21" (1/1) ... [2021-03-25 05:13:21,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:21" (1/1) ... [2021-03-25 05:13:21,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:21" (1/1) ... [2021-03-25 05:13:21,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:13:21,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:13:21,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:13:21,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:13:21,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:21" (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 [2021-03-25 05:13:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:13:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:13:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:13:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:13:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:13:21,845 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:13:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:13:21,846 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:13:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:13:21,846 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:13:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:13:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:13:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:13:21,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:13:21,848 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:13:22,206 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:13:22,207 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:13:22,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:13:22 BoogieIcfgContainer [2021-03-25 05:13:22,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:13:22,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:13:22,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:13:22,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:13:22,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:13:21" (1/3) ... [2021-03-25 05:13:22,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148c5cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:13:22, skipping insertion in model container [2021-03-25 05:13:22,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:21" (2/3) ... [2021-03-25 05:13:22,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148c5cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:13:22, skipping insertion in model container [2021-03-25 05:13:22,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:13:22" (3/3) ... [2021-03-25 05:13:22,217 INFO L111 eAbstractionObserver]: Analyzing ICFG thin001_pso.oepc.i [2021-03-25 05:13:22,222 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:13:22,226 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:13:22,226 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:13:22,256 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,257 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,257 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,257 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,257 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,257 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,258 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,258 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,258 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,258 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,258 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,258 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,259 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,259 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,259 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,260 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,260 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,260 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,260 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,260 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,260 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,261 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,261 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,261 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,263 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,263 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,263 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,263 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,264 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,264 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,266 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,267 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,267 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,268 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,268 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,268 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,270 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,270 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,270 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,270 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,277 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,278 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,280 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,280 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,280 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,280 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:22,282 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:13:22,297 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:13:22,325 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:13:22,325 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:13:22,325 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:13:22,325 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:13:22,326 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:13:22,326 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:13:22,326 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:13:22,326 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:13:22,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2021-03-25 05:13:22,400 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2021-03-25 05:13:22,400 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:13:22,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 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. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 05:13:22,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 76 transitions, 167 flow [2021-03-25 05:13:22,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 61 transitions, 131 flow [2021-03-25 05:13:22,410 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:13:22,417 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 61 transitions, 131 flow [2021-03-25 05:13:22,420 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 61 transitions, 131 flow [2021-03-25 05:13:22,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 61 transitions, 131 flow [2021-03-25 05:13:22,445 INFO L129 PetriNetUnfolder]: 1/61 cut-off events. [2021-03-25 05:13:22,445 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:13:22,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 61 events. 1/61 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. 0/60 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 05:13:22,448 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 05:13:23,912 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-25 05:13:24,052 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-25 05:13:24,121 INFO L154 LiptonReduction]: Checked pairs total: 942 [2021-03-25 05:13:24,122 INFO L156 LiptonReduction]: Total number of compositions: 40 [2021-03-25 05:13:24,124 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1715 [2021-03-25 05:13:24,136 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-25 05:13:24,136 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:13:24,137 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:13:24,137 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:13:24,137 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:13:24,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:13:24,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1196691833, now seen corresponding path program 1 times [2021-03-25 05:13:24,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:13:24,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700879816] [2021-03-25 05:13:24,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:13:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:13:24,345 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:13:24,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:13:24,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:13:24,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700879816] [2021-03-25 05:13:24,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:13:24,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 05:13:24,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176160008] [2021-03-25 05:13:24,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:13:24,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:13:24,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:13:24,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:13:24,391 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 116 [2021-03-25 05:13:24,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 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) [2021-03-25 05:13:24,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:13:24,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 116 [2021-03-25 05:13:24,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:13:24,436 INFO L129 PetriNetUnfolder]: 14/61 cut-off events. [2021-03-25 05:13:24,436 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:13:24,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 61 events. 14/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 166 event pairs, 6 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 89. Up to 29 conditions per place. [2021-03-25 05:13:24,440 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 4 selfloop transitions, 4 changer transitions 0/24 dead transitions. [2021-03-25 05:13:24,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 73 flow [2021-03-25 05:13:24,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:13:24,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:13:24,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2021-03-25 05:13:24,457 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8448275862068966 [2021-03-25 05:13:24,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2021-03-25 05:13:24,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2021-03-25 05:13:24,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:13:24,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2021-03-25 05:13:24,468 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) [2021-03-25 05:13:24,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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) [2021-03-25 05:13:24,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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) [2021-03-25 05:13:24,477 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 3 states and 294 transitions. [2021-03-25 05:13:24,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 73 flow [2021-03-25 05:13:24,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 70 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:13:24,480 INFO L241 Difference]: Finished difference. Result has 31 places, 24 transitions, 74 flow [2021-03-25 05:13:24,482 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2021-03-25 05:13:24,482 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2021-03-25 05:13:24,483 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:13:24,483 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 24 transitions, 74 flow [2021-03-25 05:13:24,483 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 24 transitions, 74 flow [2021-03-25 05:13:24,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 24 transitions, 74 flow [2021-03-25 05:13:24,500 INFO L129 PetriNetUnfolder]: 14/61 cut-off events. [2021-03-25 05:13:24,500 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:13:24,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 61 events. 14/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 173 event pairs, 6 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 92. Up to 29 conditions per place. [2021-03-25 05:13:24,502 INFO L142 LiptonReduction]: Number of co-enabled transitions 176 [2021-03-25 05:13:24,984 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-03-25 05:13:25,260 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-03-25 05:13:25,338 INFO L154 LiptonReduction]: Checked pairs total: 288 [2021-03-25 05:13:25,338 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 05:13:25,338 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 855 [2021-03-25 05:13:25,339 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 66 flow [2021-03-25 05:13:25,339 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) [2021-03-25 05:13:25,339 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:13:25,340 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:13:25,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:13:25,340 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:13:25,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:13:25,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1557259489, now seen corresponding path program 1 times [2021-03-25 05:13:25,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:13:25,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640745968] [2021-03-25 05:13:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:13:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:13:25,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:13:25,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:13:25,464 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:13:25,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:13:25,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:13:25,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640745968] [2021-03-25 05:13:25,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:13:25,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:13:25,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795746042] [2021-03-25 05:13:25,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:13:25,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:13:25,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:13:25,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:13:25,476 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2021-03-25 05:13:25,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 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) [2021-03-25 05:13:25,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:13:25,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2021-03-25 05:13:25,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:13:25,493 INFO L129 PetriNetUnfolder]: 9/41 cut-off events. [2021-03-25 05:13:25,493 INFO L130 PetriNetUnfolder]: For 11/41 co-relation queries the response was YES. [2021-03-25 05:13:25,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 41 events. 9/41 cut-off events. For 11/41 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 103 event pairs, 0 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 86. Up to 21 conditions per place. [2021-03-25 05:13:25,494 INFO L132 encePairwiseOnDemand]: 117/120 looper letters, 7 selfloop transitions, 3 changer transitions 0/22 dead transitions. [2021-03-25 05:13:25,494 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 94 flow [2021-03-25 05:13:25,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:13:25,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:13:25,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2021-03-25 05:13:25,495 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8305555555555556 [2021-03-25 05:13:25,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2021-03-25 05:13:25,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2021-03-25 05:13:25,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:13:25,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2021-03-25 05:13:25,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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) [2021-03-25 05:13:25,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2021-03-25 05:13:25,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2021-03-25 05:13:25,499 INFO L185 Difference]: Start difference. First operand has 27 places, 20 transitions, 66 flow. Second operand 3 states and 299 transitions. [2021-03-25 05:13:25,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 94 flow [2021-03-25 05:13:25,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 90 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:13:25,500 INFO L241 Difference]: Finished difference. Result has 29 places, 20 transitions, 73 flow [2021-03-25 05:13:25,500 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2021-03-25 05:13:25,501 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2021-03-25 05:13:25,501 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:13:25,501 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 20 transitions, 73 flow [2021-03-25 05:13:25,502 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 20 transitions, 73 flow [2021-03-25 05:13:25,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 20 transitions, 73 flow [2021-03-25 05:13:25,507 INFO L129 PetriNetUnfolder]: 9/41 cut-off events. [2021-03-25 05:13:25,507 INFO L130 PetriNetUnfolder]: For 7/10 co-relation queries the response was YES. [2021-03-25 05:13:25,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 41 events. 9/41 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 110 event pairs, 3 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 75. Up to 21 conditions per place. [2021-03-25 05:13:25,508 INFO L142 LiptonReduction]: Number of co-enabled transitions 128 [2021-03-25 05:13:25,509 INFO L154 LiptonReduction]: Checked pairs total: 92 [2021-03-25 05:13:25,509 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:13:25,509 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-25 05:13:25,510 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 73 flow [2021-03-25 05:13:25,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 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) [2021-03-25 05:13:25,511 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:13:25,511 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:13:25,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:13:25,511 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:13:25,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:13:25,512 INFO L82 PathProgramCache]: Analyzing trace with hash -2066713751, now seen corresponding path program 1 times [2021-03-25 05:13:25,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:13:25,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575904017] [2021-03-25 05:13:25,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:13:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:13:25,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:13:25,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:13:25,561 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:13:25,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:13:25,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:13:25,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575904017] [2021-03-25 05:13:25,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:13:25,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:13:25,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324609083] [2021-03-25 05:13:25,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:13:25,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:13:25,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:13:25,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:13:25,572 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 120 [2021-03-25 05:13:25,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2021-03-25 05:13:25,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:13:25,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 120 [2021-03-25 05:13:25,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:13:25,616 INFO L129 PetriNetUnfolder]: 14/62 cut-off events. [2021-03-25 05:13:25,616 INFO L130 PetriNetUnfolder]: For 45/89 co-relation queries the response was YES. [2021-03-25 05:13:25,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 62 events. 14/62 cut-off events. For 45/89 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 222 event pairs, 0 based on Foata normal form. 13/73 useless extension candidates. Maximal degree in co-relation 143. Up to 28 conditions per place. [2021-03-25 05:13:25,618 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 7 selfloop transitions, 9 changer transitions 0/27 dead transitions. [2021-03-25 05:13:25,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 136 flow [2021-03-25 05:13:25,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:13:25,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:13:25,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 476 transitions. [2021-03-25 05:13:25,621 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2021-03-25 05:13:25,621 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 476 transitions. [2021-03-25 05:13:25,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 476 transitions. [2021-03-25 05:13:25,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:13:25,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 476 transitions. [2021-03-25 05:13:25,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.2) internal successors, (476), 5 states have internal predecessors, (476), 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) [2021-03-25 05:13:25,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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) [2021-03-25 05:13:25,625 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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) [2021-03-25 05:13:25,625 INFO L185 Difference]: Start difference. First operand has 29 places, 20 transitions, 73 flow. Second operand 5 states and 476 transitions. [2021-03-25 05:13:25,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 136 flow [2021-03-25 05:13:25,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:13:25,627 INFO L241 Difference]: Finished difference. Result has 34 places, 25 transitions, 131 flow [2021-03-25 05:13:25,627 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2021-03-25 05:13:25,627 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2021-03-25 05:13:25,628 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:13:25,628 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 25 transitions, 131 flow [2021-03-25 05:13:25,628 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 25 transitions, 131 flow [2021-03-25 05:13:25,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 25 transitions, 131 flow [2021-03-25 05:13:25,640 INFO L129 PetriNetUnfolder]: 11/63 cut-off events. [2021-03-25 05:13:25,640 INFO L130 PetriNetUnfolder]: For 54/83 co-relation queries the response was YES. [2021-03-25 05:13:25,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 63 events. 11/63 cut-off events. For 54/83 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 242 event pairs, 2 based on Foata normal form. 2/62 useless extension candidates. Maximal degree in co-relation 157. Up to 27 conditions per place. [2021-03-25 05:13:25,643 INFO L142 LiptonReduction]: Number of co-enabled transitions 166 [2021-03-25 05:13:25,646 INFO L154 LiptonReduction]: Checked pairs total: 115 [2021-03-25 05:13:25,646 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:13:25,646 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-03-25 05:13:25,647 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 131 flow [2021-03-25 05:13:25,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2021-03-25 05:13:25,647 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:13:25,648 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:13:25,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:13:25,648 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:13:25,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:13:25,649 INFO L82 PathProgramCache]: Analyzing trace with hash 356382201, now seen corresponding path program 1 times [2021-03-25 05:13:25,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:13:25,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561928853] [2021-03-25 05:13:25,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:13:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:13:25,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:13:25,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:13:25,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:13:25,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:13:25,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:13:25,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561928853] [2021-03-25 05:13:25,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:13:25,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:13:25,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668258980] [2021-03-25 05:13:25,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:13:25,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:13:25,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:13:25,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:13:25,732 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 120 [2021-03-25 05:13:25,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 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) [2021-03-25 05:13:25,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:13:25,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 120 [2021-03-25 05:13:25,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:13:25,751 INFO L129 PetriNetUnfolder]: 7/56 cut-off events. [2021-03-25 05:13:25,751 INFO L130 PetriNetUnfolder]: For 143/196 co-relation queries the response was YES. [2021-03-25 05:13:25,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 56 events. 7/56 cut-off events. For 143/196 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 221 event pairs, 0 based on Foata normal form. 11/65 useless extension candidates. Maximal degree in co-relation 149. Up to 22 conditions per place. [2021-03-25 05:13:25,752 INFO L132 encePairwiseOnDemand]: 116/120 looper letters, 1 selfloop transitions, 3 changer transitions 6/25 dead transitions. [2021-03-25 05:13:25,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 25 transitions, 145 flow [2021-03-25 05:13:25,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:13:25,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:13:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 05:13:25,753 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8395833333333333 [2021-03-25 05:13:25,753 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 05:13:25,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 05:13:25,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:13:25,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 05:13:25,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 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) [2021-03-25 05:13:25,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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) [2021-03-25 05:13:25,756 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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) [2021-03-25 05:13:25,756 INFO L185 Difference]: Start difference. First operand has 34 places, 25 transitions, 131 flow. Second operand 4 states and 403 transitions. [2021-03-25 05:13:25,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 25 transitions, 145 flow [2021-03-25 05:13:25,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 25 transitions, 140 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 05:13:25,759 INFO L241 Difference]: Finished difference. Result has 38 places, 19 transitions, 100 flow [2021-03-25 05:13:25,759 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=19} [2021-03-25 05:13:25,759 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2021-03-25 05:13:25,759 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:13:25,759 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 19 transitions, 100 flow [2021-03-25 05:13:25,759 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 19 transitions, 100 flow [2021-03-25 05:13:25,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 19 transitions, 100 flow [2021-03-25 05:13:25,768 INFO L129 PetriNetUnfolder]: 3/27 cut-off events. [2021-03-25 05:13:25,768 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2021-03-25 05:13:25,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 27 events. 3/27 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 74. Up to 11 conditions per place. [2021-03-25 05:13:25,772 INFO L142 LiptonReduction]: Number of co-enabled transitions 114 [2021-03-25 05:13:25,797 INFO L154 LiptonReduction]: Checked pairs total: 156 [2021-03-25 05:13:25,797 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:13:25,797 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-03-25 05:13:25,798 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 19 transitions, 106 flow [2021-03-25 05:13:25,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 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) [2021-03-25 05:13:25,798 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:13:25,798 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:13:25,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:13:25,798 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:13:25,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:13:25,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1023720897, now seen corresponding path program 1 times [2021-03-25 05:13:25,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:13:25,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212729749] [2021-03-25 05:13:25,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:13:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:13:25,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:13:25,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:13:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:13:25,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212729749] [2021-03-25 05:13:25,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:13:25,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 05:13:25,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445150280] [2021-03-25 05:13:25,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:13:25,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:13:25,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:13:25,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:13:25,849 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 121 [2021-03-25 05:13:25,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 19 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2021-03-25 05:13:25,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:13:25,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 121 [2021-03-25 05:13:25,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:13:25,862 INFO L129 PetriNetUnfolder]: 2/27 cut-off events. [2021-03-25 05:13:25,862 INFO L130 PetriNetUnfolder]: For 58/70 co-relation queries the response was YES. [2021-03-25 05:13:25,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 27 events. 2/27 cut-off events. For 58/70 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 52 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 74. Up to 10 conditions per place. [2021-03-25 05:13:25,864 INFO L132 encePairwiseOnDemand]: 118/121 looper letters, 1 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2021-03-25 05:13:25,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 19 transitions, 114 flow [2021-03-25 05:13:25,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:13:25,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:13:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2021-03-25 05:13:25,865 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8787878787878788 [2021-03-25 05:13:25,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2021-03-25 05:13:25,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2021-03-25 05:13:25,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:13:25,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2021-03-25 05:13:25,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2021-03-25 05:13:25,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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) [2021-03-25 05:13:25,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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) [2021-03-25 05:13:25,867 INFO L185 Difference]: Start difference. First operand has 37 places, 19 transitions, 106 flow. Second operand 3 states and 319 transitions. [2021-03-25 05:13:25,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 19 transitions, 114 flow [2021-03-25 05:13:25,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 19 transitions, 77 flow, removed 8 selfloop flow, removed 8 redundant places. [2021-03-25 05:13:25,869 INFO L241 Difference]: Finished difference. Result has 32 places, 19 transitions, 80 flow [2021-03-25 05:13:25,869 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=19} [2021-03-25 05:13:25,869 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2021-03-25 05:13:25,869 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:13:25,869 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 19 transitions, 80 flow [2021-03-25 05:13:25,870 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 19 transitions, 80 flow [2021-03-25 05:13:25,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 19 transitions, 80 flow [2021-03-25 05:13:25,872 INFO L129 PetriNetUnfolder]: 2/27 cut-off events. [2021-03-25 05:13:25,872 INFO L130 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2021-03-25 05:13:25,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 27 events. 2/27 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 56 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 53. Up to 10 conditions per place. [2021-03-25 05:13:25,873 INFO L142 LiptonReduction]: Number of co-enabled transitions 114 [2021-03-25 05:13:25,898 INFO L154 LiptonReduction]: Checked pairs total: 183 [2021-03-25 05:13:25,898 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:13:25,898 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-25 05:13:25,899 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 76 flow [2021-03-25 05:13:25,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2021-03-25 05:13:25,899 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:13:25,899 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:13:25,899 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:13:25,900 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:13:25,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:13:25,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1485616211, now seen corresponding path program 1 times [2021-03-25 05:13:25,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:13:25,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468648647] [2021-03-25 05:13:25,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:13:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:13:25,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:13:25,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:13:25,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:13:25,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:13:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:13:25,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468648647] [2021-03-25 05:13:25,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:13:25,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:13:25,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325962331] [2021-03-25 05:13:25,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:13:25,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:13:25,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:13:25,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:13:25,946 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 122 [2021-03-25 05:13:25,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 18 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 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) [2021-03-25 05:13:25,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:13:25,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 122 [2021-03-25 05:13:25,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:13:25,961 INFO L129 PetriNetUnfolder]: 2/26 cut-off events. [2021-03-25 05:13:25,961 INFO L130 PetriNetUnfolder]: For 25/29 co-relation queries the response was YES. [2021-03-25 05:13:25,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 26 events. 2/26 cut-off events. For 25/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 2/27 useless extension candidates. Maximal degree in co-relation 59. Up to 10 conditions per place. [2021-03-25 05:13:25,962 INFO L132 encePairwiseOnDemand]: 118/122 looper letters, 1 selfloop transitions, 3 changer transitions 3/19 dead transitions. [2021-03-25 05:13:25,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 19 transitions, 95 flow [2021-03-25 05:13:25,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:13:25,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:13:25,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 411 transitions. [2021-03-25 05:13:25,963 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8422131147540983 [2021-03-25 05:13:25,963 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 411 transitions. [2021-03-25 05:13:25,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 411 transitions. [2021-03-25 05:13:25,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:13:25,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 411 transitions. [2021-03-25 05:13:25,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 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) [2021-03-25 05:13:25,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2021-03-25 05:13:25,966 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2021-03-25 05:13:25,966 INFO L185 Difference]: Start difference. First operand has 31 places, 18 transitions, 76 flow. Second operand 4 states and 411 transitions. [2021-03-25 05:13:25,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 19 transitions, 95 flow [2021-03-25 05:13:25,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 19 transitions, 85 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 05:13:25,968 INFO L241 Difference]: Finished difference. Result has 34 places, 16 transitions, 72 flow [2021-03-25 05:13:25,968 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=16} [2021-03-25 05:13:25,968 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2021-03-25 05:13:25,968 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:13:25,968 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 16 transitions, 72 flow [2021-03-25 05:13:25,968 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 16 transitions, 72 flow [2021-03-25 05:13:25,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 16 transitions, 72 flow [2021-03-25 05:13:25,970 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-25 05:13:25,970 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 05:13:25,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 16 events. 0/16 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 05:13:25,972 INFO L142 LiptonReduction]: Number of co-enabled transitions 50 [2021-03-25 05:13:26,022 INFO L154 LiptonReduction]: Checked pairs total: 53 [2021-03-25 05:13:26,023 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:13:26,023 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 55 [2021-03-25 05:13:26,023 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 14 transitions, 68 flow [2021-03-25 05:13:26,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 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) [2021-03-25 05:13:26,024 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:13:26,024 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:13:26,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:13:26,024 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:13:26,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:13:26,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1028518720, now seen corresponding path program 1 times [2021-03-25 05:13:26,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:13:26,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284853117] [2021-03-25 05:13:26,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:13:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:13:26,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:13:26,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:13:26,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:13:26,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:13:26,091 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:13:26,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:13:26,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:13:26,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284853117] [2021-03-25 05:13:26,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:13:26,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:13:26,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952052984] [2021-03-25 05:13:26,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:13:26,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:13:26,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:13:26,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:13:26,103 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 124 [2021-03-25 05:13:26,105 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 14 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2021-03-25 05:13:26,105 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:13:26,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 124 [2021-03-25 05:13:26,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:13:26,116 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-03-25 05:13:26,116 INFO L130 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2021-03-25 05:13:26,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 13 events. 0/13 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 05:13:26,117 INFO L132 encePairwiseOnDemand]: 121/124 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-03-25 05:13:26,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 13 transitions, 64 flow [2021-03-25 05:13:26,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:13:26,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:13:26,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2021-03-25 05:13:26,119 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7520161290322581 [2021-03-25 05:13:26,119 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2021-03-25 05:13:26,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2021-03-25 05:13:26,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:13:26,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2021-03-25 05:13:26,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 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) [2021-03-25 05:13:26,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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) [2021-03-25 05:13:26,122 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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) [2021-03-25 05:13:26,122 INFO L185 Difference]: Start difference. First operand has 31 places, 14 transitions, 68 flow. Second operand 4 states and 373 transitions. [2021-03-25 05:13:26,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 13 transitions, 64 flow [2021-03-25 05:13:26,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 13 transitions, 42 flow, removed 2 selfloop flow, removed 9 redundant places. [2021-03-25 05:13:26,123 INFO L241 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2021-03-25 05:13:26,123 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2021-03-25 05:13:26,123 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -7 predicate places. [2021-03-25 05:13:26,123 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:13:26,124 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 0 transitions, 0 flow [2021-03-25 05:13:26,124 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 0 transitions, 0 flow [2021-03-25 05:13:26,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:13:26,124 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:13:26,124 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:13:26,124 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. [2021-03-25 05:13:26,124 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:13:26,124 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:13:26,124 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:13:26,125 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 05:13:26,125 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:13:26,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2021-03-25 05:13:26,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:13:26,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:13:26 BasicIcfg [2021-03-25 05:13:26,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:13:26,133 INFO L168 Benchmark]: Toolchain (without parser) took 5027.99 ms. Allocated memory was 255.9 MB in the beginning and 461.4 MB in the end (delta: 205.5 MB). Free memory was 234.8 MB in the beginning and 287.8 MB in the end (delta: -53.0 MB). Peak memory consumption was 151.2 MB. Max. memory is 16.0 GB. [2021-03-25 05:13:26,135 INFO L168 Benchmark]: CDTParser took 0.18 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. [2021-03-25 05:13:26,138 INFO L168 Benchmark]: CACSL2BoogieTranslator took 576.52 ms. Allocated memory was 255.9 MB in the beginning and 383.8 MB in the end (delta: 127.9 MB). Free memory was 234.4 MB in the beginning and 346.4 MB in the end (delta: -112.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-25 05:13:26,139 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.78 ms. Allocated memory is still 383.8 MB. Free memory was 346.4 MB in the beginning and 344.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:13:26,139 INFO L168 Benchmark]: Boogie Preprocessor took 32.70 ms. Allocated memory is still 383.8 MB. Free memory was 344.4 MB in the beginning and 342.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:13:26,139 INFO L168 Benchmark]: RCFGBuilder took 442.37 ms. Allocated memory is still 383.8 MB. Free memory was 342.5 MB in the beginning and 320.8 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:13:26,139 INFO L168 Benchmark]: TraceAbstraction took 3917.81 ms. Allocated memory was 383.8 MB in the beginning and 461.4 MB in the end (delta: 77.6 MB). Free memory was 320.3 MB in the beginning and 287.8 MB in the end (delta: 32.6 MB). Peak memory consumption was 111.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:13:26,141 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 576.52 ms. Allocated memory was 255.9 MB in the beginning and 383.8 MB in the end (delta: 127.9 MB). Free memory was 234.4 MB in the beginning and 346.4 MB in the end (delta: -112.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 52.78 ms. Allocated memory is still 383.8 MB. Free memory was 346.4 MB in the beginning and 344.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.70 ms. Allocated memory is still 383.8 MB. Free memory was 344.4 MB in the beginning and 342.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 442.37 ms. Allocated memory is still 383.8 MB. Free memory was 342.5 MB in the beginning and 320.8 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3917.81 ms. Allocated memory was 383.8 MB in the beginning and 461.4 MB in the end (delta: 77.6 MB). Free memory was 320.3 MB in the beginning and 287.8 MB in the end (delta: 32.6 MB). Peak memory consumption was 111.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1701.6ms, 70 PlacesBefore, 31 PlacesAfterwards, 61 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 40 TotalNumberOfCompositions, 942 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 600, positive: 566, positive conditional: 0, positive unconditional: 566, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 399, positive: 387, positive conditional: 0, positive unconditional: 387, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 399, positive: 387, positive conditional: 0, positive unconditional: 387, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 600, positive: 179, positive conditional: 0, positive unconditional: 179, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 399, unknown conditional: 0, unknown unconditional: 399] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 854.7ms, 31 PlacesBefore, 27 PlacesAfterwards, 24 TransitionsBefore, 20 TransitionsAfterwards, 176 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 288 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 133, positive: 108, positive conditional: 0, positive unconditional: 108, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 24, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 24, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 133, positive: 87, positive conditional: 0, positive unconditional: 87, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 24, unknown conditional: 0, unknown unconditional: 24] , Statistics on independence cache: Total cache size (in pairs): 44, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.9ms, 29 PlacesBefore, 29 PlacesAfterwards, 20 TransitionsBefore, 20 TransitionsAfterwards, 128 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 92 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 59, positive: 50, positive conditional: 0, positive unconditional: 50, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 59, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.7ms, 34 PlacesBefore, 34 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 166 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 115 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 44, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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] , Cache Queries: [ total: 44, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 44, Positive conditional cache size: 0, Positive unconditional cache size: 44, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 37.4ms, 38 PlacesBefore, 37 PlacesAfterwards, 19 TransitionsBefore, 19 TransitionsAfterwards, 114 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 156 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 89, positive: 74, positive conditional: 0, positive unconditional: 74, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 89, positive: 74, positive conditional: 0, positive unconditional: 74, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.3ms, 32 PlacesBefore, 31 PlacesAfterwards, 19 TransitionsBefore, 18 TransitionsAfterwards, 114 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 183 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 84, positive: 66, positive conditional: 0, positive unconditional: 66, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 84, positive: 64, positive conditional: 0, positive unconditional: 64, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 54.1ms, 34 PlacesBefore, 31 PlacesAfterwards, 16 TransitionsBefore, 14 TransitionsAfterwards, 50 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 53 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 27, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 7, negative conditional: 0, negative unconditional: 7, 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: 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] , Cache Queries: [ total: 27, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7ms, 24 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: 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] , 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): 15, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - 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, 75 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3805.6ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 279.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1802.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 31 SDtfs, 15 SDslu, 6 SDs, 0 SdLazy, 32 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 40.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred in iteration=3, InterpolantAutomatonStates: 26, 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: 17.4ms SsaConstructionTime, 151.4ms SatisfiabilityAnalysisTime, 376.1ms InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 363 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...