/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 00:42:21,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 00:42:21,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 00:42:21,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-26 00:42:21,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 00:42:22,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 00:42:22,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 00:42:22,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 00:42:22,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 00:42:22,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 00:42:22,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 00:42:22,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 00:42:22,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 00:42:22,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 00:42:22,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 00:42:22,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 00:42:22,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 00:42:22,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 00:42:22,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 00:42:22,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 00:42:22,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-03-26 00:42:22,049 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 00:42:22,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 00:42:22,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 00:42:22,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 00:42:22,052 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 00:42:22,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 00:42:22,052 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 00:42:22,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 00:42:22,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 00:42:22,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 00:42:22,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 00:42:22,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 00:42:22,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 00:42:22,054 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 00:42:22,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 00:42:22,054 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 00:42:22,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 00:42:22,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 00:42:22,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 00:42:22,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 00:42:22,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 00:42:22,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 00:42:22,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 00:42:22,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 00:42:22,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 00:42:22,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 00:42:22,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 00:42:22,055 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 00:42:22,055 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 00:42:22,055 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 00:42:22,055 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 00:42:22,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 00:42:22,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 00:42:22,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 00:42:22,309 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 00:42:22,310 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 00:42:22,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2021-03-26 00:42:22,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7e2dfb70/092524be14bf4d48a7bc62db605f7478/FLAGc6d665800 [2021-03-26 00:42:22,748 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 00:42:22,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2021-03-26 00:42:22,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7e2dfb70/092524be14bf4d48a7bc62db605f7478/FLAGc6d665800 [2021-03-26 00:42:23,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7e2dfb70/092524be14bf4d48a7bc62db605f7478 [2021-03-26 00:42:23,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 00:42:23,095 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 00:42:23,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 00:42:23,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 00:42:23,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 00:42:23,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:42:23" (1/1) ... [2021-03-26 00:42:23,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b27e54e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:42:23, skipping insertion in model container [2021-03-26 00:42:23,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:42:23" (1/1) ... [2021-03-26 00:42:23,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 00:42:23,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 00:42:23,212 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/safe017_tso.opt.i[949,962] [2021-03-26 00:42:23,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:42:23,340 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 00:42:23,347 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/safe017_tso.opt.i[949,962] [2021-03-26 00:42:23,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:42:23,406 INFO L208 MainTranslator]: Completed translation [2021-03-26 00:42:23,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:42:23 WrapperNode [2021-03-26 00:42:23,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 00:42:23,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 00:42:23,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 00:42:23,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 00:42:23,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:42:23" (1/1) ... [2021-03-26 00:42:23,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:42:23" (1/1) ... [2021-03-26 00:42:23,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 00:42:23,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 00:42:23,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 00:42:23,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 00:42:23,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:42:23" (1/1) ... [2021-03-26 00:42:23,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:42:23" (1/1) ... [2021-03-26 00:42:23,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:42:23" (1/1) ... [2021-03-26 00:42:23,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:42:23" (1/1) ... [2021-03-26 00:42:23,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:42:23" (1/1) ... [2021-03-26 00:42:23,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:42:23" (1/1) ... [2021-03-26 00:42:23,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:42:23" (1/1) ... [2021-03-26 00:42:23,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 00:42:23,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 00:42:23,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 00:42:23,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 00:42:23,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:42:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 00:42:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 00:42:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 00:42:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 00:42:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 00:42:23,527 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 00:42:23,527 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 00:42:23,527 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 00:42:23,527 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 00:42:23,527 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-26 00:42:23,527 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-26 00:42:23,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 00:42:23,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 00:42:23,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 00:42:23,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 00:42:23,529 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 00:42:23,772 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 00:42:23,773 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-26 00:42:23,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:42:23 BoogieIcfgContainer [2021-03-26 00:42:23,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 00:42:23,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 00:42:23,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 00:42:23,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 00:42:23,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 12:42:23" (1/3) ... [2021-03-26 00:42:23,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58889a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:42:23, skipping insertion in model container [2021-03-26 00:42:23,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:42:23" (2/3) ... [2021-03-26 00:42:23,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58889a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:42:23, skipping insertion in model container [2021-03-26 00:42:23,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:42:23" (3/3) ... [2021-03-26 00:42:23,778 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.opt.i [2021-03-26 00:42:23,782 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 00:42:23,785 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 00:42:23,785 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 00:42:23,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,805 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,805 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,805 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,806 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,806 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,806 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,806 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,806 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,806 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,806 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,807 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,807 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,807 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,807 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,807 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,807 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,807 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,807 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,807 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,807 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,808 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,808 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,808 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,808 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,808 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,808 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,808 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,808 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,809 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,809 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,809 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,809 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,810 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,810 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,810 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,811 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,814 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,814 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,814 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,814 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,816 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,816 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,816 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,816 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:42:23,817 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 00:42:23,829 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 00:42:23,842 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 00:42:23,842 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 00:42:23,842 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 00:42:23,842 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 00:42:23,842 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 00:42:23,842 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 00:42:23,842 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 00:42:23,843 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 00:42:23,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 72 transitions, 159 flow [2021-03-26 00:42:23,869 INFO L129 PetriNetUnfolder]: 2/69 cut-off events. [2021-03-26 00:42:23,869 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:42:23,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 2/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-26 00:42:23,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 72 transitions, 159 flow [2021-03-26 00:42:23,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2021-03-26 00:42:23,875 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:42:23,883 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 57 transitions, 123 flow [2021-03-26 00:42:23,885 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 57 transitions, 123 flow [2021-03-26 00:42:23,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 57 transitions, 123 flow [2021-03-26 00:42:23,913 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2021-03-26 00:42:23,913 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:42:23,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 57 events. 1/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-26 00:42:23,917 INFO L142 LiptonReduction]: Number of co-enabled transitions 804 [2021-03-26 00:42:25,331 INFO L154 LiptonReduction]: Checked pairs total: 1064 [2021-03-26 00:42:25,332 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-26 00:42:25,333 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1459 [2021-03-26 00:42:25,340 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-26 00:42:25,340 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:42:25,340 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:42:25,341 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:42:25,341 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:42:25,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:42:25,344 INFO L82 PathProgramCache]: Analyzing trace with hash 2096371605, now seen corresponding path program 1 times [2021-03-26 00:42:25,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:42:25,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804456080] [2021-03-26 00:42:25,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:42:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:42:25,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:25,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:42:25,529 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:42:25,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:42:25,540 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-26 00:42:25,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 00:42:25,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:42:25,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804456080] [2021-03-26 00:42:25,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:42:25,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:42:25,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176669693] [2021-03-26 00:42:25,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:42:25,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:42:25,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:42:25,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:42:25,561 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 110 [2021-03-26 00:42:25,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:25,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:42:25,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 110 [2021-03-26 00:42:25,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:42:25,646 INFO L129 PetriNetUnfolder]: 110/265 cut-off events. [2021-03-26 00:42:25,646 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:42:25,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 265 events. 110/265 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1353 event pairs, 32 based on Foata normal form. 25/281 useless extension candidates. Maximal degree in co-relation 470. Up to 98 conditions per place. [2021-03-26 00:42:25,648 INFO L132 encePairwiseOnDemand]: 102/110 looper letters, 9 selfloop transitions, 6 changer transitions 11/38 dead transitions. [2021-03-26 00:42:25,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 137 flow [2021-03-26 00:42:25,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:42:25,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:42:25,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2021-03-26 00:42:25,657 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7872727272727272 [2021-03-26 00:42:25,657 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2021-03-26 00:42:25,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2021-03-26 00:42:25,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:42:25,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2021-03-26 00:42:25,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:25,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:25,667 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:25,669 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 5 states and 433 transitions. [2021-03-26 00:42:25,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 137 flow [2021-03-26 00:42:25,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-26 00:42:25,672 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 108 flow [2021-03-26 00:42:25,673 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, 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=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2021-03-26 00:42:25,673 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2021-03-26 00:42:25,673 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:42:25,674 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 26 transitions, 108 flow [2021-03-26 00:42:25,674 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 26 transitions, 108 flow [2021-03-26 00:42:25,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 26 transitions, 108 flow [2021-03-26 00:42:25,684 INFO L129 PetriNetUnfolder]: 63/170 cut-off events. [2021-03-26 00:42:25,684 INFO L130 PetriNetUnfolder]: For 74/84 co-relation queries the response was YES. [2021-03-26 00:42:25,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 170 events. 63/170 cut-off events. For 74/84 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 774 event pairs, 24 based on Foata normal form. 3/161 useless extension candidates. Maximal degree in co-relation 406. Up to 76 conditions per place. [2021-03-26 00:42:25,686 INFO L142 LiptonReduction]: Number of co-enabled transitions 134 [2021-03-26 00:42:26,032 INFO L154 LiptonReduction]: Checked pairs total: 135 [2021-03-26 00:42:26,033 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 00:42:26,033 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 360 [2021-03-26 00:42:26,034 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 102 flow [2021-03-26 00:42:26,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,035 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:42:26,035 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:42:26,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 00:42:26,035 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:42:26,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:42:26,036 INFO L82 PathProgramCache]: Analyzing trace with hash 562991605, now seen corresponding path program 1 times [2021-03-26 00:42:26,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:42:26,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914283648] [2021-03-26 00:42:26,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:42:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:42:26,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:26,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:42:26,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:26,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:42:26,083 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:42:26,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:42:26,089 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-26 00:42:26,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 00:42:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:42:26,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914283648] [2021-03-26 00:42:26,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:42:26,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:42:26,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461193943] [2021-03-26 00:42:26,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:42:26,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:42:26,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:42:26,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:42:26,100 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 113 [2021-03-26 00:42:26,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:42:26,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 113 [2021-03-26 00:42:26,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:42:26,161 INFO L129 PetriNetUnfolder]: 66/201 cut-off events. [2021-03-26 00:42:26,161 INFO L130 PetriNetUnfolder]: For 197/256 co-relation queries the response was YES. [2021-03-26 00:42:26,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 201 events. 66/201 cut-off events. For 197/256 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1042 event pairs, 2 based on Foata normal form. 27/225 useless extension candidates. Maximal degree in co-relation 623. Up to 80 conditions per place. [2021-03-26 00:42:26,165 INFO L132 encePairwiseOnDemand]: 104/113 looper letters, 13 selfloop transitions, 11 changer transitions 19/52 dead transitions. [2021-03-26 00:42:26,165 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 52 transitions, 360 flow [2021-03-26 00:42:26,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 00:42:26,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 00:42:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 606 transitions. [2021-03-26 00:42:26,171 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7661188369152971 [2021-03-26 00:42:26,171 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 606 transitions. [2021-03-26 00:42:26,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 606 transitions. [2021-03-26 00:42:26,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:42:26,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 606 transitions. [2021-03-26 00:42:26,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,176 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,176 INFO L185 Difference]: Start difference. First operand has 31 places, 23 transitions, 102 flow. Second operand 7 states and 606 transitions. [2021-03-26 00:42:26,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 52 transitions, 360 flow [2021-03-26 00:42:26,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 52 transitions, 320 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 00:42:26,180 INFO L241 Difference]: Finished difference. Result has 41 places, 30 transitions, 194 flow [2021-03-26 00:42:26,180 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=194, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2021-03-26 00:42:26,181 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2021-03-26 00:42:26,181 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:42:26,181 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 30 transitions, 194 flow [2021-03-26 00:42:26,182 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 30 transitions, 194 flow [2021-03-26 00:42:26,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 30 transitions, 194 flow [2021-03-26 00:42:26,193 INFO L129 PetriNetUnfolder]: 39/121 cut-off events. [2021-03-26 00:42:26,193 INFO L130 PetriNetUnfolder]: For 261/286 co-relation queries the response was YES. [2021-03-26 00:42:26,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 121 events. 39/121 cut-off events. For 261/286 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 523 event pairs, 9 based on Foata normal form. 5/121 useless extension candidates. Maximal degree in co-relation 391. Up to 53 conditions per place. [2021-03-26 00:42:26,196 INFO L142 LiptonReduction]: Number of co-enabled transitions 164 [2021-03-26 00:42:26,310 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-26 00:42:26,490 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-26 00:42:26,555 INFO L154 LiptonReduction]: Checked pairs total: 210 [2021-03-26 00:42:26,555 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 00:42:26,556 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 375 [2021-03-26 00:42:26,556 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 190 flow [2021-03-26 00:42:26,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,557 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:42:26,557 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:42:26,557 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 00:42:26,557 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:42:26,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:42:26,557 INFO L82 PathProgramCache]: Analyzing trace with hash 885063118, now seen corresponding path program 1 times [2021-03-26 00:42:26,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:42:26,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387045619] [2021-03-26 00:42:26,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:42:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:42:26,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:26,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:42:26,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:26,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:42:26,623 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:42:26,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:42:26,629 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-26 00:42:26,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 00:42:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:42:26,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387045619] [2021-03-26 00:42:26,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:42:26,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:42:26,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600168374] [2021-03-26 00:42:26,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:42:26,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:42:26,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:42:26,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:42:26,634 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 114 [2021-03-26 00:42:26,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:42:26,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 114 [2021-03-26 00:42:26,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:42:26,691 INFO L129 PetriNetUnfolder]: 45/146 cut-off events. [2021-03-26 00:42:26,691 INFO L130 PetriNetUnfolder]: For 552/640 co-relation queries the response was YES. [2021-03-26 00:42:26,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 146 events. 45/146 cut-off events. For 552/640 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 677 event pairs, 6 based on Foata normal form. 26/170 useless extension candidates. Maximal degree in co-relation 577. Up to 54 conditions per place. [2021-03-26 00:42:26,692 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 14 selfloop transitions, 14 changer transitions 11/48 dead transitions. [2021-03-26 00:42:26,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 414 flow [2021-03-26 00:42:26,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 00:42:26,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 00:42:26,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 599 transitions. [2021-03-26 00:42:26,695 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7506265664160401 [2021-03-26 00:42:26,695 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 599 transitions. [2021-03-26 00:42:26,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 599 transitions. [2021-03-26 00:42:26,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:42:26,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 599 transitions. [2021-03-26 00:42:26,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.57142857142857) internal successors, (599), 7 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,699 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,699 INFO L185 Difference]: Start difference. First operand has 37 places, 29 transitions, 190 flow. Second operand 7 states and 599 transitions. [2021-03-26 00:42:26,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 414 flow [2021-03-26 00:42:26,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 402 flow, removed 6 selfloop flow, removed 0 redundant places. [2021-03-26 00:42:26,704 INFO L241 Difference]: Finished difference. Result has 48 places, 34 transitions, 278 flow [2021-03-26 00:42:26,704 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2021-03-26 00:42:26,705 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2021-03-26 00:42:26,705 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:42:26,705 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 34 transitions, 278 flow [2021-03-26 00:42:26,705 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 34 transitions, 278 flow [2021-03-26 00:42:26,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 34 transitions, 278 flow [2021-03-26 00:42:26,715 INFO L129 PetriNetUnfolder]: 31/107 cut-off events. [2021-03-26 00:42:26,715 INFO L130 PetriNetUnfolder]: For 352/375 co-relation queries the response was YES. [2021-03-26 00:42:26,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 107 events. 31/107 cut-off events. For 352/375 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 451 event pairs, 4 based on Foata normal form. 3/107 useless extension candidates. Maximal degree in co-relation 411. Up to 44 conditions per place. [2021-03-26 00:42:26,717 INFO L142 LiptonReduction]: Number of co-enabled transitions 176 [2021-03-26 00:42:26,721 INFO L154 LiptonReduction]: Checked pairs total: 109 [2021-03-26 00:42:26,721 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:42:26,721 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-03-26 00:42:26,722 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 278 flow [2021-03-26 00:42:26,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,722 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:42:26,723 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:42:26,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 00:42:26,723 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:42:26,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:42:26,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2127108171, now seen corresponding path program 1 times [2021-03-26 00:42:26,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:42:26,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47542186] [2021-03-26 00:42:26,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:42:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:42:26,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:26,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:42:26,770 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:42:26,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:42:26,775 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-26 00:42:26,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 00:42:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:42:26,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47542186] [2021-03-26 00:42:26,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:42:26,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:42:26,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699451406] [2021-03-26 00:42:26,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:42:26,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:42:26,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:42:26,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:42:26,779 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 114 [2021-03-26 00:42:26,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 278 flow. Second operand has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:42:26,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 114 [2021-03-26 00:42:26,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:42:26,813 INFO L129 PetriNetUnfolder]: 36/124 cut-off events. [2021-03-26 00:42:26,813 INFO L130 PetriNetUnfolder]: For 730/804 co-relation queries the response was YES. [2021-03-26 00:42:26,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 124 events. 36/124 cut-off events. For 730/804 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 536 event pairs, 2 based on Foata normal form. 8/129 useless extension candidates. Maximal degree in co-relation 569. Up to 43 conditions per place. [2021-03-26 00:42:26,814 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 17 selfloop transitions, 14 changer transitions 8/48 dead transitions. [2021-03-26 00:42:26,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 496 flow [2021-03-26 00:42:26,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 00:42:26,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 00:42:26,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 593 transitions. [2021-03-26 00:42:26,816 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7431077694235589 [2021-03-26 00:42:26,816 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 593 transitions. [2021-03-26 00:42:26,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 593 transitions. [2021-03-26 00:42:26,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:42:26,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 593 transitions. [2021-03-26 00:42:26,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.71428571428571) internal successors, (593), 7 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,822 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,822 INFO L185 Difference]: Start difference. First operand has 45 places, 34 transitions, 278 flow. Second operand 7 states and 593 transitions. [2021-03-26 00:42:26,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 496 flow [2021-03-26 00:42:26,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 48 transitions, 472 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-26 00:42:26,825 INFO L241 Difference]: Finished difference. Result has 52 places, 37 transitions, 365 flow [2021-03-26 00:42:26,825 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=365, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2021-03-26 00:42:26,825 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2021-03-26 00:42:26,825 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:42:26,825 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 37 transitions, 365 flow [2021-03-26 00:42:26,826 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 37 transitions, 365 flow [2021-03-26 00:42:26,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 37 transitions, 365 flow [2021-03-26 00:42:26,833 INFO L129 PetriNetUnfolder]: 26/94 cut-off events. [2021-03-26 00:42:26,833 INFO L130 PetriNetUnfolder]: For 462/480 co-relation queries the response was YES. [2021-03-26 00:42:26,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 94 events. 26/94 cut-off events. For 462/480 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 363 event pairs, 2 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 419. Up to 37 conditions per place. [2021-03-26 00:42:26,835 INFO L142 LiptonReduction]: Number of co-enabled transitions 184 [2021-03-26 00:42:26,836 INFO L154 LiptonReduction]: Checked pairs total: 164 [2021-03-26 00:42:26,837 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:42:26,837 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-26 00:42:26,838 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 365 flow [2021-03-26 00:42:26,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,838 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:42:26,838 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:42:26,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 00:42:26,839 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:42:26,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:42:26,839 INFO L82 PathProgramCache]: Analyzing trace with hash 457127928, now seen corresponding path program 1 times [2021-03-26 00:42:26,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:42:26,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368309449] [2021-03-26 00:42:26,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:42:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:42:26,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:26,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:42:26,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:26,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:42:26,876 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:42:26,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:42:26,885 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-26 00:42:26,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 00:42:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:42:26,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368309449] [2021-03-26 00:42:26,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:42:26,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:42:26,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541224356] [2021-03-26 00:42:26,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:42:26,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:42:26,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:42:26,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:42:26,889 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 114 [2021-03-26 00:42:26,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 365 flow. Second operand has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 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) [2021-03-26 00:42:26,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:42:26,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 114 [2021-03-26 00:42:26,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:42:26,925 INFO L129 PetriNetUnfolder]: 26/115 cut-off events. [2021-03-26 00:42:26,925 INFO L130 PetriNetUnfolder]: For 868/923 co-relation queries the response was YES. [2021-03-26 00:42:26,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 115 events. 26/115 cut-off events. For 868/923 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 520 event pairs, 1 based on Foata normal form. 22/135 useless extension candidates. Maximal degree in co-relation 583. Up to 37 conditions per place. [2021-03-26 00:42:26,926 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 11 selfloop transitions, 19 changer transitions 6/45 dead transitions. [2021-03-26 00:42:26,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 45 transitions, 545 flow [2021-03-26 00:42:26,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 00:42:26,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 00:42:26,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 591 transitions. [2021-03-26 00:42:26,928 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7406015037593985 [2021-03-26 00:42:26,928 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 591 transitions. [2021-03-26 00:42:26,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 591 transitions. [2021-03-26 00:42:26,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:42:26,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 591 transitions. [2021-03-26 00:42:26,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.42857142857143) internal successors, (591), 7 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,931 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:26,931 INFO L185 Difference]: Start difference. First operand has 49 places, 37 transitions, 365 flow. Second operand 7 states and 591 transitions. [2021-03-26 00:42:26,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 45 transitions, 545 flow [2021-03-26 00:42:26,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 501 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-03-26 00:42:26,934 INFO L241 Difference]: Finished difference. Result has 56 places, 37 transitions, 414 flow [2021-03-26 00:42:26,935 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=414, PETRI_PLACES=56, PETRI_TRANSITIONS=37} [2021-03-26 00:42:26,935 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2021-03-26 00:42:26,935 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:42:26,935 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 37 transitions, 414 flow [2021-03-26 00:42:26,935 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 37 transitions, 414 flow [2021-03-26 00:42:26,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 37 transitions, 414 flow [2021-03-26 00:42:26,942 INFO L129 PetriNetUnfolder]: 21/89 cut-off events. [2021-03-26 00:42:26,942 INFO L130 PetriNetUnfolder]: For 552/575 co-relation queries the response was YES. [2021-03-26 00:42:26,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 89 events. 21/89 cut-off events. For 552/575 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 381 event pairs, 2 based on Foata normal form. 5/91 useless extension candidates. Maximal degree in co-relation 420. Up to 32 conditions per place. [2021-03-26 00:42:26,943 INFO L142 LiptonReduction]: Number of co-enabled transitions 176 [2021-03-26 00:42:26,946 INFO L154 LiptonReduction]: Checked pairs total: 160 [2021-03-26 00:42:26,946 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:42:26,946 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-26 00:42:26,947 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 414 flow [2021-03-26 00:42:26,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 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) [2021-03-26 00:42:26,947 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:42:26,947 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:42:26,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 00:42:26,948 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:42:26,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:42:26,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1320642085, now seen corresponding path program 1 times [2021-03-26 00:42:26,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:42:26,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418569597] [2021-03-26 00:42:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:42:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:42:26,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:26,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:42:26,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:26,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:42:26,991 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:42:26,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:42:26,996 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-26 00:42:26,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 00:42:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:42:26,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418569597] [2021-03-26 00:42:26,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:42:27,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:42:27,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449858278] [2021-03-26 00:42:27,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 00:42:27,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:42:27,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 00:42:27,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-26 00:42:27,001 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 114 [2021-03-26 00:42:27,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 414 flow. Second operand has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:42:27,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 114 [2021-03-26 00:42:27,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:42:27,035 INFO L129 PetriNetUnfolder]: 25/130 cut-off events. [2021-03-26 00:42:27,035 INFO L130 PetriNetUnfolder]: For 1160/1204 co-relation queries the response was YES. [2021-03-26 00:42:27,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 130 events. 25/130 cut-off events. For 1160/1204 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 680 event pairs, 0 based on Foata normal form. 11/140 useless extension candidates. Maximal degree in co-relation 702. Up to 41 conditions per place. [2021-03-26 00:42:27,036 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 10 selfloop transitions, 12 changer transitions 23/54 dead transitions. [2021-03-26 00:42:27,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 726 flow [2021-03-26 00:42:27,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 00:42:27,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 00:42:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2021-03-26 00:42:27,038 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-03-26 00:42:27,038 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2021-03-26 00:42:27,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2021-03-26 00:42:27,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:42:27,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2021-03-26 00:42:27,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,040 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,040 INFO L185 Difference]: Start difference. First operand has 52 places, 37 transitions, 414 flow. Second operand 6 states and 513 transitions. [2021-03-26 00:42:27,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 726 flow [2021-03-26 00:42:27,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 694 flow, removed 16 selfloop flow, removed 3 redundant places. [2021-03-26 00:42:27,043 INFO L241 Difference]: Finished difference. Result has 56 places, 29 transitions, 321 flow [2021-03-26 00:42:27,043 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=56, PETRI_TRANSITIONS=29} [2021-03-26 00:42:27,043 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2021-03-26 00:42:27,044 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:42:27,044 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 29 transitions, 321 flow [2021-03-26 00:42:27,044 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 29 transitions, 321 flow [2021-03-26 00:42:27,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 29 transitions, 321 flow [2021-03-26 00:42:27,049 INFO L129 PetriNetUnfolder]: 8/62 cut-off events. [2021-03-26 00:42:27,049 INFO L130 PetriNetUnfolder]: For 431/453 co-relation queries the response was YES. [2021-03-26 00:42:27,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 62 events. 8/62 cut-off events. For 431/453 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 229 event pairs, 0 based on Foata normal form. 2/62 useless extension candidates. Maximal degree in co-relation 285. Up to 18 conditions per place. [2021-03-26 00:42:27,050 INFO L142 LiptonReduction]: Number of co-enabled transitions 146 [2021-03-26 00:42:27,096 INFO L154 LiptonReduction]: Checked pairs total: 246 [2021-03-26 00:42:27,097 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 00:42:27,097 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 54 [2021-03-26 00:42:27,098 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 28 transitions, 319 flow [2021-03-26 00:42:27,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,098 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:42:27,098 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:42:27,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 00:42:27,098 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:42:27,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:42:27,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1861810015, now seen corresponding path program 2 times [2021-03-26 00:42:27,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:42:27,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521000267] [2021-03-26 00:42:27,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:42:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:42:27,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:27,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:42:27,124 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 00:42:27,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 00:42:27,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:27,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:42:27,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:42:27,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521000267] [2021-03-26 00:42:27,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:42:27,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:42:27,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085016391] [2021-03-26 00:42:27,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:42:27,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:42:27,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:42:27,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:42:27,132 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 115 [2021-03-26 00:42:27,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 28 transitions, 319 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:42:27,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 115 [2021-03-26 00:42:27,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:42:27,166 INFO L129 PetriNetUnfolder]: 90/218 cut-off events. [2021-03-26 00:42:27,167 INFO L130 PetriNetUnfolder]: For 2118/2191 co-relation queries the response was YES. [2021-03-26 00:42:27,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 218 events. 90/218 cut-off events. For 2118/2191 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1142 event pairs, 32 based on Foata normal form. 25/227 useless extension candidates. Maximal degree in co-relation 738. Up to 138 conditions per place. [2021-03-26 00:42:27,168 INFO L132 encePairwiseOnDemand]: 109/115 looper letters, 5 selfloop transitions, 7 changer transitions 4/38 dead transitions. [2021-03-26 00:42:27,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 38 transitions, 371 flow [2021-03-26 00:42:27,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:42:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:42:27,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2021-03-26 00:42:27,169 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7530434782608696 [2021-03-26 00:42:27,169 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2021-03-26 00:42:27,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2021-03-26 00:42:27,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:42:27,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2021-03-26 00:42:27,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,171 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,171 INFO L185 Difference]: Start difference. First operand has 54 places, 28 transitions, 319 flow. Second operand 5 states and 433 transitions. [2021-03-26 00:42:27,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 38 transitions, 371 flow [2021-03-26 00:42:27,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 38 transitions, 272 flow, removed 13 selfloop flow, removed 12 redundant places. [2021-03-26 00:42:27,174 INFO L241 Difference]: Finished difference. Result has 49 places, 34 transitions, 270 flow [2021-03-26 00:42:27,174 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2021-03-26 00:42:27,175 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2021-03-26 00:42:27,175 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:42:27,175 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 34 transitions, 270 flow [2021-03-26 00:42:27,175 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 34 transitions, 270 flow [2021-03-26 00:42:27,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 34 transitions, 270 flow [2021-03-26 00:42:27,185 INFO L129 PetriNetUnfolder]: 27/134 cut-off events. [2021-03-26 00:42:27,185 INFO L130 PetriNetUnfolder]: For 448/482 co-relation queries the response was YES. [2021-03-26 00:42:27,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 134 events. 27/134 cut-off events. For 448/482 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 817 event pairs, 8 based on Foata normal form. 2/126 useless extension candidates. Maximal degree in co-relation 477. Up to 55 conditions per place. [2021-03-26 00:42:27,186 INFO L142 LiptonReduction]: Number of co-enabled transitions 224 [2021-03-26 00:42:27,188 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:42:27,188 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:42:27,188 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-26 00:42:27,189 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 270 flow [2021-03-26 00:42:27,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,189 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:42:27,189 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:42:27,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 00:42:27,189 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:42:27,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:42:27,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1684668340, now seen corresponding path program 1 times [2021-03-26 00:42:27,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:42:27,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998514626] [2021-03-26 00:42:27,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:42:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:42:27,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:27,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:42:27,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:27,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:42:27,234 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 00:42:27,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 00:42:27,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:42:27,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998514626] [2021-03-26 00:42:27,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:42:27,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:42:27,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968622845] [2021-03-26 00:42:27,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:42:27,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:42:27,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:42:27,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:42:27,239 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 115 [2021-03-26 00:42:27,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:42:27,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 115 [2021-03-26 00:42:27,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:42:27,278 INFO L129 PetriNetUnfolder]: 51/163 cut-off events. [2021-03-26 00:42:27,279 INFO L130 PetriNetUnfolder]: For 922/1171 co-relation queries the response was YES. [2021-03-26 00:42:27,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 163 events. 51/163 cut-off events. For 922/1171 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 879 event pairs, 4 based on Foata normal form. 75/224 useless extension candidates. Maximal degree in co-relation 619. Up to 73 conditions per place. [2021-03-26 00:42:27,279 INFO L132 encePairwiseOnDemand]: 109/115 looper letters, 5 selfloop transitions, 10 changer transitions 11/44 dead transitions. [2021-03-26 00:42:27,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 360 flow [2021-03-26 00:42:27,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 00:42:27,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 00:42:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2021-03-26 00:42:27,281 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7515527950310559 [2021-03-26 00:42:27,281 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2021-03-26 00:42:27,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2021-03-26 00:42:27,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:42:27,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2021-03-26 00:42:27,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,284 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,285 INFO L185 Difference]: Start difference. First operand has 49 places, 34 transitions, 270 flow. Second operand 7 states and 605 transitions. [2021-03-26 00:42:27,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 360 flow [2021-03-26 00:42:27,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 44 transitions, 358 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-26 00:42:27,288 INFO L241 Difference]: Finished difference. Result has 57 places, 33 transitions, 302 flow [2021-03-26 00:42:27,288 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=302, PETRI_PLACES=57, PETRI_TRANSITIONS=33} [2021-03-26 00:42:27,289 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2021-03-26 00:42:27,289 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:42:27,289 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 33 transitions, 302 flow [2021-03-26 00:42:27,289 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 33 transitions, 302 flow [2021-03-26 00:42:27,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 56 places, 33 transitions, 302 flow [2021-03-26 00:42:27,295 INFO L129 PetriNetUnfolder]: 29/105 cut-off events. [2021-03-26 00:42:27,295 INFO L130 PetriNetUnfolder]: For 531/593 co-relation queries the response was YES. [2021-03-26 00:42:27,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 105 events. 29/105 cut-off events. For 531/593 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 463 event pairs, 4 based on Foata normal form. 10/113 useless extension candidates. Maximal degree in co-relation 466. Up to 66 conditions per place. [2021-03-26 00:42:27,296 INFO L142 LiptonReduction]: Number of co-enabled transitions 164 [2021-03-26 00:42:27,301 INFO L154 LiptonReduction]: Checked pairs total: 23 [2021-03-26 00:42:27,301 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 00:42:27,301 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-26 00:42:27,302 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 31 transitions, 286 flow [2021-03-26 00:42:27,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,302 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:42:27,302 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:42:27,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 00:42:27,302 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:42:27,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:42:27,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1517819662, now seen corresponding path program 1 times [2021-03-26 00:42:27,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:42:27,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940991984] [2021-03-26 00:42:27,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:42:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:42:27,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:27,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:42:27,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:27,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:42:27,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:27,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:42:27,347 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 00:42:27,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 00:42:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:42:27,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940991984] [2021-03-26 00:42:27,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:42:27,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:42:27,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451701607] [2021-03-26 00:42:27,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 00:42:27,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:42:27,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 00:42:27,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 00:42:27,354 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 115 [2021-03-26 00:42:27,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 31 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:42:27,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 115 [2021-03-26 00:42:27,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:42:27,392 INFO L129 PetriNetUnfolder]: 22/77 cut-off events. [2021-03-26 00:42:27,392 INFO L130 PetriNetUnfolder]: For 509/599 co-relation queries the response was YES. [2021-03-26 00:42:27,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 77 events. 22/77 cut-off events. For 509/599 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 272 event pairs, 0 based on Foata normal form. 37/111 useless extension candidates. Maximal degree in co-relation 377. Up to 49 conditions per place. [2021-03-26 00:42:27,393 INFO L132 encePairwiseOnDemand]: 109/115 looper letters, 2 selfloop transitions, 10 changer transitions 12/34 dead transitions. [2021-03-26 00:42:27,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 34 transitions, 341 flow [2021-03-26 00:42:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 00:42:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 00:42:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 599 transitions. [2021-03-26 00:42:27,394 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7440993788819876 [2021-03-26 00:42:27,394 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 599 transitions. [2021-03-26 00:42:27,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 599 transitions. [2021-03-26 00:42:27,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:42:27,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 599 transitions. [2021-03-26 00:42:27,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.57142857142857) internal successors, (599), 7 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,397 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,397 INFO L185 Difference]: Start difference. First operand has 56 places, 31 transitions, 286 flow. Second operand 7 states and 599 transitions. [2021-03-26 00:42:27,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 34 transitions, 341 flow [2021-03-26 00:42:27,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 34 transitions, 283 flow, removed 16 selfloop flow, removed 7 redundant places. [2021-03-26 00:42:27,399 INFO L241 Difference]: Finished difference. Result has 54 places, 22 transitions, 180 flow [2021-03-26 00:42:27,399 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=180, PETRI_PLACES=54, PETRI_TRANSITIONS=22} [2021-03-26 00:42:27,399 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2021-03-26 00:42:27,399 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:42:27,399 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 22 transitions, 180 flow [2021-03-26 00:42:27,400 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 22 transitions, 180 flow [2021-03-26 00:42:27,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 22 transitions, 180 flow [2021-03-26 00:42:27,402 INFO L129 PetriNetUnfolder]: 5/25 cut-off events. [2021-03-26 00:42:27,402 INFO L130 PetriNetUnfolder]: For 57/60 co-relation queries the response was YES. [2021-03-26 00:42:27,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 25 events. 5/25 cut-off events. For 57/60 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 95. Up to 11 conditions per place. [2021-03-26 00:42:27,402 INFO L142 LiptonReduction]: Number of co-enabled transitions 36 [2021-03-26 00:42:27,657 INFO L154 LiptonReduction]: Checked pairs total: 28 [2021-03-26 00:42:27,657 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-26 00:42:27,657 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 258 [2021-03-26 00:42:27,658 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 18 transitions, 197 flow [2021-03-26 00:42:27,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,658 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:42:27,659 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:42:27,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 00:42:27,659 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:42:27,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:42:27,659 INFO L82 PathProgramCache]: Analyzing trace with hash -628203743, now seen corresponding path program 1 times [2021-03-26 00:42:27,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:42:27,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721064729] [2021-03-26 00:42:27,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:42:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:42:27,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:27,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:42:27,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:27,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:42:27,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:42:27,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:42:27,696 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:42:27,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:42:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:42:27,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721064729] [2021-03-26 00:42:27,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:42:27,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:42:27,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047576484] [2021-03-26 00:42:27,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:42:27,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:42:27,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:42:27,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:42:27,703 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 123 [2021-03-26 00:42:27,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 18 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:42:27,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 123 [2021-03-26 00:42:27,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:42:27,717 INFO L129 PetriNetUnfolder]: 5/21 cut-off events. [2021-03-26 00:42:27,718 INFO L130 PetriNetUnfolder]: For 185/206 co-relation queries the response was YES. [2021-03-26 00:42:27,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 21 events. 5/21 cut-off events. For 185/206 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 3/23 useless extension candidates. Maximal degree in co-relation 123. Up to 10 conditions per place. [2021-03-26 00:42:27,718 INFO L132 encePairwiseOnDemand]: 114/123 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2021-03-26 00:42:27,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 17 transitions, 191 flow [2021-03-26 00:42:27,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 00:42:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 00:42:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 519 transitions. [2021-03-26 00:42:27,719 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7032520325203252 [2021-03-26 00:42:27,719 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 519 transitions. [2021-03-26 00:42:27,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 519 transitions. [2021-03-26 00:42:27,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:42:27,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 519 transitions. [2021-03-26 00:42:27,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,721 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,722 INFO L185 Difference]: Start difference. First operand has 48 places, 18 transitions, 197 flow. Second operand 6 states and 519 transitions. [2021-03-26 00:42:27,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 17 transitions, 191 flow [2021-03-26 00:42:27,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 17 transitions, 77 flow, removed 12 selfloop flow, removed 21 redundant places. [2021-03-26 00:42:27,723 INFO L241 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2021-03-26 00:42:27,723 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2021-03-26 00:42:27,723 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2021-03-26 00:42:27,723 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:42:27,723 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 0 transitions, 0 flow [2021-03-26 00:42:27,724 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 0 transitions, 0 flow [2021-03-26 00:42:27,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 00:42:27,724 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 00:42:27,724 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:42:27,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-26 00:42:27,724 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 00:42:27,724 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:42:27,724 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:42:27,724 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 00:42:27,726 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 00:42:27,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:42:27,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 00:42:27,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 12:42:27 BasicIcfg [2021-03-26 00:42:27,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 00:42:27,729 INFO L168 Benchmark]: Toolchain (without parser) took 4634.35 ms. Allocated memory was 255.9 MB in the beginning and 448.8 MB in the end (delta: 192.9 MB). Free memory was 234.9 MB in the beginning and 333.1 MB in the end (delta: -98.2 MB). Peak memory consumption was 93.3 MB. Max. memory is 16.0 GB. [2021-03-26 00:42:27,729 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:42:27,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.62 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 234.9 MB in the beginning and 336.3 MB in the end (delta: -101.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-26 00:42:27,730 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.92 ms. Allocated memory is still 373.3 MB. Free memory was 336.3 MB in the beginning and 334.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:42:27,730 INFO L168 Benchmark]: Boogie Preprocessor took 25.50 ms. Allocated memory is still 373.3 MB. Free memory was 334.2 MB in the beginning and 332.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:42:27,730 INFO L168 Benchmark]: RCFGBuilder took 296.72 ms. Allocated memory is still 373.3 MB. Free memory was 332.8 MB in the beginning and 311.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-26 00:42:27,730 INFO L168 Benchmark]: TraceAbstraction took 3953.86 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 310.5 MB in the beginning and 333.1 MB in the end (delta: -22.7 MB). Peak memory consumption was 54.9 MB. Max. memory is 16.0 GB. [2021-03-26 00:42:27,734 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 311.62 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 234.9 MB in the beginning and 336.3 MB in the end (delta: -101.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 42.92 ms. Allocated memory is still 373.3 MB. Free memory was 336.3 MB in the beginning and 334.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.50 ms. Allocated memory is still 373.3 MB. Free memory was 334.2 MB in the beginning and 332.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 296.72 ms. Allocated memory is still 373.3 MB. Free memory was 332.8 MB in the beginning and 311.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3953.86 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 310.5 MB in the beginning and 333.1 MB in the end (delta: -22.7 MB). Peak memory consumption was 54.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1446.7ms, 66 PlacesBefore, 31 PlacesAfterwards, 57 TransitionsBefore, 21 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 4 FixpointIterations, 12 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1064 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 686, positive: 653, positive conditional: 653, positive unconditional: 0, negative: 33, negative conditional: 33, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 573, positive: 551, positive conditional: 0, positive unconditional: 551, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 573, positive: 551, positive conditional: 0, positive unconditional: 551, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 573, positive: 545, positive conditional: 0, positive unconditional: 545, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 28, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 97, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 686, positive: 102, positive conditional: 102, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 573, unknown conditional: 573, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 13, Positive conditional cache size: 13, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 358.7ms, 36 PlacesBefore, 31 PlacesAfterwards, 26 TransitionsBefore, 23 TransitionsAfterwards, 134 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 135 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 15, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 5, unknown conditional: 5, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 16, Positive conditional cache size: 16, Positive unconditional cache size: 0, Negative cache size: 8, Negative conditional cache size: 8, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 373.1ms, 41 PlacesBefore, 37 PlacesAfterwards, 30 TransitionsBefore, 29 TransitionsAfterwards, 164 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 210 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 36, positive: 22, positive conditional: 22, positive unconditional: 0, negative: 14, negative conditional: 14, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 2, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 2, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 36, positive: 19, positive conditional: 19, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 19, Positive conditional cache size: 19, Positive unconditional cache size: 0, Negative cache size: 9, Negative conditional cache size: 9, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.9ms, 48 PlacesBefore, 45 PlacesAfterwards, 34 TransitionsBefore, 34 TransitionsAfterwards, 176 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 109 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 19, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 21, Positive conditional cache size: 21, Positive unconditional cache size: 0, Negative cache size: 9, Negative conditional cache size: 9, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.9ms, 52 PlacesBefore, 49 PlacesAfterwards, 37 TransitionsBefore, 37 TransitionsAfterwards, 184 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 164 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15, positive: 5, positive conditional: 5, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 15, positive: 5, positive conditional: 5, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 21, Positive conditional cache size: 21, Positive unconditional cache size: 0, Negative cache size: 9, Negative conditional cache size: 9, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.3ms, 56 PlacesBefore, 52 PlacesAfterwards, 37 TransitionsBefore, 37 TransitionsAfterwards, 176 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 160 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 22, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 22, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 24, Positive conditional cache size: 24, Positive unconditional cache size: 0, Negative cache size: 9, Negative conditional cache size: 9, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 52.9ms, 56 PlacesBefore, 54 PlacesAfterwards, 29 TransitionsBefore, 28 TransitionsAfterwards, 146 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 246 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 48, positive: 29, positive conditional: 29, positive unconditional: 0, negative: 19, negative conditional: 19, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 4, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 4, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 10, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 48, positive: 19, positive conditional: 19, positive unconditional: 0, negative: 19, negative conditional: 19, negative unconditional: 0, unknown: 10, unknown conditional: 10, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 29, Positive conditional cache size: 29, Positive unconditional cache size: 0, Negative cache size: 8, Negative conditional cache size: 8, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.1ms, 49 PlacesBefore, 49 PlacesAfterwards, 34 TransitionsBefore, 34 TransitionsAfterwards, 224 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 29, Positive conditional cache size: 29, Positive unconditional cache size: 0, Negative cache size: 8, Negative conditional cache size: 8, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.5ms, 57 PlacesBefore, 56 PlacesAfterwards, 33 TransitionsBefore, 31 TransitionsAfterwards, 164 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 23 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23, positive: 23, positive conditional: 23, 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: 23, positive: 23, positive conditional: 23, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 23, positive: 23, positive conditional: 23, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 23, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 23, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 23, unknown conditional: 23, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 24, Positive conditional cache size: 24, Positive unconditional cache size: 0, Negative cache size: 5, Negative conditional cache size: 5, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 257.8ms, 54 PlacesBefore, 48 PlacesAfterwards, 22 TransitionsBefore, 18 TransitionsAfterwards, 36 CoEnabledTransitionPairs, 4 FixpointIterations, 2 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 28 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 28, positive: 28, positive conditional: 28, 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: 20, positive: 20, positive conditional: 20, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 20, positive: 20, positive conditional: 20, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 20, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 33, positive: 33, positive conditional: 33, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 28, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 20, unknown conditional: 20, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5ms, 31 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3887.1ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 568.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1494.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 101 SDtfs, 82 SDslu, 121 SDs, 0 SdLazy, 204 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 139.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 161.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=414occurred in iteration=5, InterpolantAutomatonStates: 64, 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: 20.6ms SsaConstructionTime, 148.7ms SatisfiabilityAnalysisTime, 384.7ms InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 579 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...