/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/safe010_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-28 23:44:01,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-28 23:44:01,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-28 23:44:01,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-28 23:44:01,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-28 23:44:01,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-28 23:44:01,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-28 23:44:01,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-28 23:44:01,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-28 23:44:01,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-28 23:44:01,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-28 23:44:01,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-28 23:44:01,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-28 23:44:01,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-28 23:44:01,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-28 23:44:01,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-28 23:44:01,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-28 23:44:01,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-28 23:44:01,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-28 23:44:01,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-28 23:44:01,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-28 23:44:01,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-28 23:44:01,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-28 23:44:01,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-28 23:44:01,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-28 23:44:01,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-28 23:44:01,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-28 23:44:01,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-28 23:44:01,987 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 [2021-04-28 23:44:02,018 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-28 23:44:02,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-28 23:44:02,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-28 23:44:02,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-28 23:44:02,022 INFO L138 SettingsManager]: * Use SBE=true [2021-04-28 23:44:02,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-28 23:44:02,022 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-28 23:44:02,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-28 23:44:02,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-28 23:44:02,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-28 23:44:02,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-28 23:44:02,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-28 23:44:02,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-28 23:44:02,024 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-28 23:44:02,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-28 23:44:02,025 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-28 23:44:02,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-28 23:44:02,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-28 23:44:02,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-28 23:44:02,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-28 23:44:02,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-28 23:44:02,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-28 23:44:02,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-28 23:44:02,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-28 23:44:02,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-28 23:44:02,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-28 23:44:02,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-28 23:44:02,028 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-28 23:44:02,029 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-28 23:44:02,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-28 23:44:02,029 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-28 23:44:02,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-28 23:44:02,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-28 23:44:02,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-28 23:44:02,493 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-28 23:44:02,494 INFO L275 PluginConnector]: CDTParser initialized [2021-04-28 23:44:02,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_rmo.oepc.i [2021-04-28 23:44:02,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f45b25be/aad1ca9332ce41538e0c672eee3124ce/FLAGe59292e35 [2021-04-28 23:44:03,441 INFO L306 CDTParser]: Found 1 translation units. [2021-04-28 23:44:03,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_rmo.oepc.i [2021-04-28 23:44:03,473 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f45b25be/aad1ca9332ce41538e0c672eee3124ce/FLAGe59292e35 [2021-04-28 23:44:03,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f45b25be/aad1ca9332ce41538e0c672eee3124ce [2021-04-28 23:44:03,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-28 23:44:03,732 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-28 23:44:03,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-28 23:44:03,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-28 23:44:03,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-28 23:44:03,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:44:03" (1/1) ... [2021-04-28 23:44:03,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19ae2f15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:44:03, skipping insertion in model container [2021-04-28 23:44:03,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:44:03" (1/1) ... [2021-04-28 23:44:03,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-28 23:44:03,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-28 23:44:04,184 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/safe010_rmo.oepc.i[950,963] [2021-04-28 23:44:04,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 23:44:04,584 INFO L203 MainTranslator]: Completed pre-run [2021-04-28 23:44:04,604 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/safe010_rmo.oepc.i[950,963] [2021-04-28 23:44:04,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 23:44:04,849 INFO L208 MainTranslator]: Completed translation [2021-04-28 23:44:04,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:44:04 WrapperNode [2021-04-28 23:44:04,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-28 23:44:04,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-28 23:44:04,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-28 23:44:04,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-28 23:44:04,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:44:04" (1/1) ... [2021-04-28 23:44:04,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:44:04" (1/1) ... [2021-04-28 23:44:04,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-28 23:44:04,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-28 23:44:04,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-28 23:44:04,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-28 23:44:04,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:44:04" (1/1) ... [2021-04-28 23:44:04,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:44:04" (1/1) ... [2021-04-28 23:44:04,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:44:04" (1/1) ... [2021-04-28 23:44:04,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:44:04" (1/1) ... [2021-04-28 23:44:05,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:44:04" (1/1) ... [2021-04-28 23:44:05,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:44:04" (1/1) ... [2021-04-28 23:44:05,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:44:04" (1/1) ... [2021-04-28 23:44:05,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-28 23:44:05,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-28 23:44:05,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-28 23:44:05,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-28 23:44:05,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:44:04" (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 [2021-04-28 23:44:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-28 23:44:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-28 23:44:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-28 23:44:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-28 23:44:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-28 23:44:05,152 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-28 23:44:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-28 23:44:05,152 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-28 23:44:05,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-28 23:44:05,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-28 23:44:05,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-28 23:44:05,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-28 23:44:05,156 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-28 23:44:07,535 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-28 23:44:07,535 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-04-28 23:44:07,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:44:07 BoogieIcfgContainer [2021-04-28 23:44:07,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-28 23:44:07,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-28 23:44:07,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-28 23:44:07,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-28 23:44:07,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 11:44:03" (1/3) ... [2021-04-28 23:44:07,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3706eaa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:44:07, skipping insertion in model container [2021-04-28 23:44:07,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:44:04" (2/3) ... [2021-04-28 23:44:07,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3706eaa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:44:07, skipping insertion in model container [2021-04-28 23:44:07,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:44:07" (3/3) ... [2021-04-28 23:44:07,549 INFO L111 eAbstractionObserver]: Analyzing ICFG safe010_rmo.oepc.i [2021-04-28 23:44:07,559 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-28 23:44:07,565 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-04-28 23:44:07,567 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-28 23:44:07,603 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,603 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,604 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,604 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,604 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,604 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,604 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,604 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,605 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,605 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,605 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,606 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,606 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,606 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,607 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,607 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,607 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,608 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,608 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,608 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,608 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,608 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,611 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,611 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,611 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,612 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,612 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,612 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,612 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,613 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,613 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,613 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,613 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,613 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,614 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,614 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,614 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,614 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,615 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,615 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,615 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,616 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,616 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,616 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,617 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,617 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,617 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,617 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,618 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,618 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,618 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,619 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,621 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,621 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,623 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,623 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,624 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,625 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,626 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,626 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,626 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,627 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,627 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,627 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,627 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,628 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,628 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:44:07,630 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-28 23:44:07,657 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-04-28 23:44:07,689 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-28 23:44:07,689 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-28 23:44:07,689 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-28 23:44:07,689 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-28 23:44:07,689 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-28 23:44:07,690 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-28 23:44:07,690 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-28 23:44:07,690 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-28 23:44:07,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 80 transitions, 170 flow [2021-04-28 23:44:07,750 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2021-04-28 23:44:07,751 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:44:07,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-04-28 23:44:07,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 80 transitions, 170 flow [2021-04-28 23:44:07,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 78 transitions, 162 flow [2021-04-28 23:44:07,765 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:44:07,784 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 78 transitions, 162 flow [2021-04-28 23:44:07,789 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 78 transitions, 162 flow [2021-04-28 23:44:07,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 78 transitions, 162 flow [2021-04-28 23:44:07,813 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2021-04-28 23:44:07,813 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:44:07,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-04-28 23:44:07,817 INFO L146 LiptonReduction]: Number of co-enabled transitions 926 [2021-04-28 23:44:09,431 WARN L205 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 224 DAG size of output: 184 [2021-04-28 23:44:10,577 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 182 DAG size of output: 181 [2021-04-28 23:44:13,243 WARN L205 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 308 DAG size of output: 263 [2021-04-28 23:44:14,420 WARN L205 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 260 [2021-04-28 23:44:17,410 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2021-04-28 23:44:17,545 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-04-28 23:44:18,142 WARN L205 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 83 [2021-04-28 23:44:18,441 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-04-28 23:44:19,381 WARN L205 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2021-04-28 23:44:19,959 WARN L205 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2021-04-28 23:44:21,153 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 262 [2021-04-28 23:44:22,404 WARN L205 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 262 [2021-04-28 23:44:22,985 WARN L205 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2021-04-28 23:44:23,613 WARN L205 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2021-04-28 23:44:24,854 WARN L205 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 260 [2021-04-28 23:44:26,096 WARN L205 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 260 [2021-04-28 23:44:26,723 WARN L205 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2021-04-28 23:44:27,374 WARN L205 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2021-04-28 23:44:28,800 WARN L205 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 264 [2021-04-28 23:44:30,131 WARN L205 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 264 [2021-04-28 23:44:32,854 WARN L205 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-04-28 23:44:33,506 WARN L205 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-04-28 23:44:34,889 WARN L205 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 263 [2021-04-28 23:44:36,293 WARN L205 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 263 [2021-04-28 23:44:36,969 WARN L205 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2021-04-28 23:44:37,647 WARN L205 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2021-04-28 23:44:39,054 WARN L205 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 262 [2021-04-28 23:44:40,432 WARN L205 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 262 [2021-04-28 23:44:41,158 WARN L205 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2021-04-28 23:44:41,868 WARN L205 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2021-04-28 23:44:43,289 WARN L205 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 260 [2021-04-28 23:44:44,679 WARN L205 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 260 [2021-04-28 23:44:45,453 WARN L205 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-04-28 23:44:46,205 WARN L205 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-04-28 23:44:47,760 WARN L205 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 263 [2021-04-28 23:44:49,407 WARN L205 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 263 [2021-04-28 23:44:51,623 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-28 23:44:51,863 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-28 23:44:52,108 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-28 23:44:52,356 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-28 23:44:52,617 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-28 23:44:52,842 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-28 23:44:53,098 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:44:53,367 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:44:53,602 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-28 23:44:53,827 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-28 23:44:54,920 WARN L205 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2021-04-28 23:44:55,722 WARN L205 SmtUtils]: Spent 799.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2021-04-28 23:44:57,387 WARN L205 SmtUtils]: Spent 1.66 s on a formula simplification that was a NOOP. DAG size: 262 [2021-04-28 23:44:59,078 WARN L205 SmtUtils]: Spent 1.69 s on a formula simplification that was a NOOP. DAG size: 262 [2021-04-28 23:44:59,956 WARN L205 SmtUtils]: Spent 873.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-04-28 23:45:00,834 WARN L205 SmtUtils]: Spent 875.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-04-28 23:45:02,537 WARN L205 SmtUtils]: Spent 1.70 s on a formula simplification that was a NOOP. DAG size: 263 [2021-04-28 23:45:04,272 WARN L205 SmtUtils]: Spent 1.73 s on a formula simplification that was a NOOP. DAG size: 263 [2021-04-28 23:45:05,203 WARN L205 SmtUtils]: Spent 912.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2021-04-28 23:45:06,070 WARN L205 SmtUtils]: Spent 864.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2021-04-28 23:45:07,906 WARN L205 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 260 [2021-04-28 23:45:09,783 WARN L205 SmtUtils]: Spent 1.87 s on a formula simplification that was a NOOP. DAG size: 260 [2021-04-28 23:45:11,045 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-28 23:45:11,171 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-28 23:45:11,421 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-28 23:45:11,529 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-28 23:45:11,698 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-28 23:45:11,966 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-28 23:45:12,277 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-28 23:45:12,607 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-28 23:45:12,725 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-04-28 23:45:12,951 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-28 23:45:13,259 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-28 23:45:13,653 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-04-28 23:45:13,757 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-04-28 23:45:13,863 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-04-28 23:45:13,983 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-04-28 23:45:14,568 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-04-28 23:45:14,676 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-04-28 23:45:14,784 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-04-28 23:45:14,892 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-04-28 23:45:15,709 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:45:15,838 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-04-28 23:45:16,109 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:45:16,233 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-04-28 23:45:16,479 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 23:45:16,596 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-04-28 23:45:16,842 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 23:45:16,961 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-04-28 23:45:17,167 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-28 23:45:17,452 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-28 23:45:17,711 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-28 23:45:17,960 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-28 23:45:18,254 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-28 23:45:18,566 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-28 23:45:18,929 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-04-28 23:45:19,075 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-04-28 23:45:19,366 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-04-28 23:45:19,491 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-04-28 23:45:19,764 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-04-28 23:45:19,997 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-04-28 23:45:20,223 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-04-28 23:45:20,439 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-04-28 23:45:20,606 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-28 23:45:20,775 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-28 23:45:20,941 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-28 23:45:21,098 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-28 23:45:21,257 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-28 23:45:21,393 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-28 23:45:21,528 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-28 23:45:21,662 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-28 23:45:22,343 WARN L205 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2021-04-28 23:45:22,660 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-04-28 23:45:23,313 WARN L205 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2021-04-28 23:45:23,617 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-04-28 23:45:24,260 WARN L205 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2021-04-28 23:45:24,583 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-04-28 23:45:25,203 WARN L205 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2021-04-28 23:45:25,495 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-04-28 23:45:25,713 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-28 23:45:25,937 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-28 23:45:26,171 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-28 23:45:26,399 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-28 23:45:26,605 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-28 23:45:26,800 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-28 23:45:27,034 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-28 23:45:27,249 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-28 23:45:27,449 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-28 23:45:27,651 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-28 23:45:27,843 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-28 23:45:28,028 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-28 23:45:28,193 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-04-28 23:45:28,369 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-04-28 23:45:28,524 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-04-28 23:45:28,684 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-04-28 23:45:28,916 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-28 23:45:29,142 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-28 23:45:29,359 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-28 23:45:29,575 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-28 23:45:29,791 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-28 23:45:29,988 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-28 23:45:30,247 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-28 23:45:30,496 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-28 23:45:30,757 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 23:45:31,022 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 23:45:31,274 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 23:45:31,527 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 23:45:31,695 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-04-28 23:45:31,865 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-04-28 23:45:32,024 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-04-28 23:45:32,185 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-04-28 23:45:32,338 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 23:45:32,483 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 23:45:32,644 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 23:45:32,795 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-28 23:45:33,051 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 23:45:33,314 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 23:45:33,564 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 23:45:33,832 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 23:45:34,000 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-04-28 23:45:34,183 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-04-28 23:45:34,353 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-04-28 23:45:34,517 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-04-28 23:45:34,795 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 23:45:35,072 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 23:45:35,353 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 23:45:35,620 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 23:45:35,811 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-04-28 23:45:35,979 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-04-28 23:45:36,151 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-04-28 23:45:36,315 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-04-28 23:45:36,516 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-28 23:45:36,713 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-28 23:45:36,924 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-28 23:45:37,138 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-28 23:45:37,185 INFO L158 LiptonReduction]: Checked pairs total: 8212 [2021-04-28 23:45:37,186 INFO L160 LiptonReduction]: Total number of compositions: 178 [2021-04-28 23:45:37,191 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 89429 [2021-04-28 23:45:37,219 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-04-28 23:45:37,219 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:45:37,220 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:45:37,221 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-04-28 23:45:37,222 INFO L428 AbstractCegarLoop]: === Iteration 1 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:45:37,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:45:37,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1002642, now seen corresponding path program 1 times [2021-04-28 23:45:37,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:45:37,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867313102] [2021-04-28 23:45:37,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:45:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:45:37,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:45:37,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:45:37,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:45:37,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867313102] [2021-04-28 23:45:37,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:45:37,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-28 23:45:37,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296255895] [2021-04-28 23:45:37,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 23:45:37,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:45:37,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 23:45:37,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 23:45:37,613 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 258 [2021-04-28 23:45:37,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 101 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 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) [2021-04-28 23:45:37,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:45:37,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 258 [2021-04-28 23:45:37,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:45:38,150 INFO L129 PetriNetUnfolder]: 107/334 cut-off events. [2021-04-28 23:45:38,150 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:45:38,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 334 events. 107/334 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 2243 event pairs, 76 based on Foata normal form. 6/148 useless extension candidates. Maximal degree in co-relation 494. Up to 157 conditions per place. [2021-04-28 23:45:38,156 INFO L132 encePairwiseOnDemand]: 243/258 looper letters, 7 selfloop transitions, 2 changer transitions 79/112 dead transitions. [2021-04-28 23:45:38,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 112 transitions, 316 flow [2021-04-28 23:45:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 23:45:38,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 23:45:38,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 639 transitions. [2021-04-28 23:45:38,185 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8255813953488372 [2021-04-28 23:45:38,187 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 639 transitions. [2021-04-28 23:45:38,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 639 transitions. [2021-04-28 23:45:38,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:45:38,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 639 transitions. [2021-04-28 23:45:38,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 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) [2021-04-28 23:45:38,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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) [2021-04-28 23:45:38,220 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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) [2021-04-28 23:45:38,223 INFO L185 Difference]: Start difference. First operand has 106 places, 101 transitions, 208 flow. Second operand 3 states and 639 transitions. [2021-04-28 23:45:38,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 112 transitions, 316 flow [2021-04-28 23:45:38,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 112 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-28 23:45:38,234 INFO L241 Difference]: Finished difference. Result has 103 places, 30 transitions, 68 flow [2021-04-28 23:45:38,237 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=103, PETRI_TRANSITIONS=30} [2021-04-28 23:45:38,239 INFO L343 CegarLoopForPetriNet]: 106 programPoint places, -3 predicate places. [2021-04-28 23:45:38,239 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:45:38,240 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 30 transitions, 68 flow [2021-04-28 23:45:38,240 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 30 transitions, 68 flow [2021-04-28 23:45:38,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2021-04-28 23:45:38,247 INFO L129 PetriNetUnfolder]: 0/30 cut-off events. [2021-04-28 23:45:38,247 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:45:38,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 108 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-28 23:45:38,248 INFO L146 LiptonReduction]: Number of co-enabled transitions 462 [2021-04-28 23:45:38,596 INFO L158 LiptonReduction]: Checked pairs total: 414 [2021-04-28 23:45:38,596 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:45:38,597 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 358 [2021-04-28 23:45:38,599 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 68 flow [2021-04-28 23:45:38,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 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) [2021-04-28 23:45:38,600 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:45:38,600 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:45:38,601 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-28 23:45:38,601 INFO L428 AbstractCegarLoop]: === Iteration 2 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:45:38,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:45:38,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1701659655, now seen corresponding path program 1 times [2021-04-28 23:45:38,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:45:38,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628912116] [2021-04-28 23:45:38,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:45:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:45:38,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:45:38,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:45:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:45:38,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628912116] [2021-04-28 23:45:38,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:45:38,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-28 23:45:38,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924424561] [2021-04-28 23:45:38,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 23:45:38,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:45:38,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 23:45:38,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 23:45:38,828 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 258 [2021-04-28 23:45:38,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 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) [2021-04-28 23:45:38,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:45:38,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 258 [2021-04-28 23:45:38,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:45:38,859 INFO L129 PetriNetUnfolder]: 0/30 cut-off events. [2021-04-28 23:45:38,860 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:45:38,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 96 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-28 23:45:38,860 INFO L132 encePairwiseOnDemand]: 255/258 looper letters, 1 selfloop transitions, 2 changer transitions 10/30 dead transitions. [2021-04-28 23:45:38,861 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 30 transitions, 74 flow [2021-04-28 23:45:38,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 23:45:38,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 23:45:38,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2021-04-28 23:45:38,867 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6989664082687338 [2021-04-28 23:45:38,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2021-04-28 23:45:38,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2021-04-28 23:45:38,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:45:38,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2021-04-28 23:45:38,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 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) [2021-04-28 23:45:38,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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) [2021-04-28 23:45:38,874 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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) [2021-04-28 23:45:38,875 INFO L185 Difference]: Start difference. First operand has 37 places, 30 transitions, 68 flow. Second operand 3 states and 541 transitions. [2021-04-28 23:45:38,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 30 transitions, 74 flow [2021-04-28 23:45:38,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 30 transitions, 70 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-28 23:45:38,877 INFO L241 Difference]: Finished difference. Result has 38 places, 20 transitions, 52 flow [2021-04-28 23:45:38,877 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=38, PETRI_TRANSITIONS=20} [2021-04-28 23:45:38,878 INFO L343 CegarLoopForPetriNet]: 106 programPoint places, -68 predicate places. [2021-04-28 23:45:38,878 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:45:38,878 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 20 transitions, 52 flow [2021-04-28 23:45:38,879 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 20 transitions, 52 flow [2021-04-28 23:45:38,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 20 transitions, 52 flow [2021-04-28 23:45:38,885 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-04-28 23:45:38,885 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:45:38,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 40 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-28 23:45:38,886 INFO L146 LiptonReduction]: Number of co-enabled transitions 188 [2021-04-28 23:45:39,135 INFO L158 LiptonReduction]: Checked pairs total: 229 [2021-04-28 23:45:39,135 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:45:39,136 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 258 [2021-04-28 23:45:39,138 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 52 flow [2021-04-28 23:45:39,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 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) [2021-04-28 23:45:39,139 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:45:39,139 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:45:39,139 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-28 23:45:39,139 INFO L428 AbstractCegarLoop]: === Iteration 3 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:45:39,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:45:39,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1214609869, now seen corresponding path program 1 times [2021-04-28 23:45:39,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:45:39,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911980676] [2021-04-28 23:45:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:45:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:45:39,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:45:39,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:45:39,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:45:39,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:45:39,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:45:39,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911980676] [2021-04-28 23:45:39,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:45:39,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:45:39,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432733523] [2021-04-28 23:45:39,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:45:39,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:45:39,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:45:39,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:45:39,275 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 258 [2021-04-28 23:45:39,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 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) [2021-04-28 23:45:39,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:45:39,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 258 [2021-04-28 23:45:39,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:45:39,323 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-04-28 23:45:39,324 INFO L130 PetriNetUnfolder]: For 4/6 co-relation queries the response was YES. [2021-04-28 23:45:39,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 31 events. 0/31 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 83 event pairs, 0 based on Foata normal form. 3/25 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-28 23:45:39,325 INFO L132 encePairwiseOnDemand]: 254/258 looper letters, 1 selfloop transitions, 3 changer transitions 2/21 dead transitions. [2021-04-28 23:45:39,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 67 flow [2021-04-28 23:45:39,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:45:39,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:45:39,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 687 transitions. [2021-04-28 23:45:39,331 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6656976744186046 [2021-04-28 23:45:39,332 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 687 transitions. [2021-04-28 23:45:39,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 687 transitions. [2021-04-28 23:45:39,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:45:39,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 687 transitions. [2021-04-28 23:45:39,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 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) [2021-04-28 23:45:39,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 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) [2021-04-28 23:45:39,341 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 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) [2021-04-28 23:45:39,341 INFO L185 Difference]: Start difference. First operand has 28 places, 20 transitions, 52 flow. Second operand 4 states and 687 transitions. [2021-04-28 23:45:39,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 67 flow [2021-04-28 23:45:39,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 21 transitions, 61 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-28 23:45:39,343 INFO L241 Difference]: Finished difference. Result has 31 places, 19 transitions, 60 flow [2021-04-28 23:45:39,343 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2021-04-28 23:45:39,343 INFO L343 CegarLoopForPetriNet]: 106 programPoint places, -75 predicate places. [2021-04-28 23:45:39,343 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:45:39,343 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 19 transitions, 60 flow [2021-04-28 23:45:39,344 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 19 transitions, 60 flow [2021-04-28 23:45:39,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 19 transitions, 60 flow [2021-04-28 23:45:39,349 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-04-28 23:45:39,349 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-28 23:45:39,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 19 events. 0/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 28 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-28 23:45:39,350 INFO L146 LiptonReduction]: Number of co-enabled transitions 138 [2021-04-28 23:45:39,746 INFO L158 LiptonReduction]: Checked pairs total: 324 [2021-04-28 23:45:39,746 INFO L160 LiptonReduction]: Total number of compositions: 1 [2021-04-28 23:45:39,747 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 404 [2021-04-28 23:45:39,749 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 60 flow [2021-04-28 23:45:39,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 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) [2021-04-28 23:45:39,750 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:45:39,750 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:45:39,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-28 23:45:39,750 INFO L428 AbstractCegarLoop]: === Iteration 4 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:45:39,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:45:39,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1545211307, now seen corresponding path program 1 times [2021-04-28 23:45:39,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:45:39,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521642280] [2021-04-28 23:45:39,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:45:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:45:39,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:45:39,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-28 23:45:39,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:45:39,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:45:39,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:45:39,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-28 23:45:39,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:45:40,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-28 23:45:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:45:40,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521642280] [2021-04-28 23:45:40,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:45:40,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-28 23:45:40,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693139125] [2021-04-28 23:45:40,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-28 23:45:40,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:45:40,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-28 23:45:40,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-28 23:45:40,036 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 259 [2021-04-28 23:45:40,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 60 flow. Second operand has 6 states, 6 states have (on average 118.83333333333333) internal successors, (713), 6 states have internal predecessors, (713), 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) [2021-04-28 23:45:40,038 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:45:40,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 259 [2021-04-28 23:45:40,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:45:40,327 INFO L129 PetriNetUnfolder]: 167/297 cut-off events. [2021-04-28 23:45:40,327 INFO L130 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2021-04-28 23:45:40,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 297 events. 167/297 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1141 event pairs, 86 based on Foata normal form. 2/207 useless extension candidates. Maximal degree in co-relation 686. Up to 274 conditions per place. [2021-04-28 23:45:40,331 INFO L132 encePairwiseOnDemand]: 252/259 looper letters, 18 selfloop transitions, 6 changer transitions 1/29 dead transitions. [2021-04-28 23:45:40,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 29 transitions, 130 flow [2021-04-28 23:45:40,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:45:40,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:45:40,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 617 transitions. [2021-04-28 23:45:40,338 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.47644787644787645 [2021-04-28 23:45:40,338 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 617 transitions. [2021-04-28 23:45:40,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 617 transitions. [2021-04-28 23:45:40,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:45:40,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 617 transitions. [2021-04-28 23:45:40,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:45:40,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 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) [2021-04-28 23:45:40,348 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 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) [2021-04-28 23:45:40,348 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 60 flow. Second operand 5 states and 617 transitions. [2021-04-28 23:45:40,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 29 transitions, 130 flow [2021-04-28 23:45:40,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 118 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-04-28 23:45:40,351 INFO L241 Difference]: Finished difference. Result has 32 places, 22 transitions, 82 flow [2021-04-28 23:45:40,351 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2021-04-28 23:45:40,352 INFO L343 CegarLoopForPetriNet]: 106 programPoint places, -74 predicate places. [2021-04-28 23:45:40,352 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:45:40,352 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 22 transitions, 82 flow [2021-04-28 23:45:40,353 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 22 transitions, 82 flow [2021-04-28 23:45:40,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 22 transitions, 82 flow [2021-04-28 23:45:40,361 INFO L129 PetriNetUnfolder]: 3/35 cut-off events. [2021-04-28 23:45:40,361 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-04-28 23:45:40,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 35 events. 3/35 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 92 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 60. Up to 8 conditions per place. [2021-04-28 23:45:40,363 INFO L146 LiptonReduction]: Number of co-enabled transitions 138 [2021-04-28 23:45:40,974 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 63 [2021-04-28 23:45:41,789 WARN L205 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 82 [2021-04-28 23:45:41,916 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-04-28 23:45:42,107 INFO L158 LiptonReduction]: Checked pairs total: 98 [2021-04-28 23:45:42,107 INFO L160 LiptonReduction]: Total number of compositions: 1 [2021-04-28 23:45:42,108 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1756 [2021-04-28 23:45:42,109 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 90 flow [2021-04-28 23:45:42,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 118.83333333333333) internal successors, (713), 6 states have internal predecessors, (713), 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) [2021-04-28 23:45:42,110 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:45:42,110 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:45:42,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-28 23:45:42,111 INFO L428 AbstractCegarLoop]: === Iteration 5 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:45:42,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:45:42,111 INFO L82 PathProgramCache]: Analyzing trace with hash -640794834, now seen corresponding path program 1 times [2021-04-28 23:45:42,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:45:42,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078349364] [2021-04-28 23:45:42,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:45:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:45:42,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:45:42,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:45:42,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:45:42,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-28 23:45:42,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:45:42,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 23:45:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:45:42,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078349364] [2021-04-28 23:45:42,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:45:42,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:45:42,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26679455] [2021-04-28 23:45:42,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:45:42,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:45:42,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:45:42,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:45:42,240 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 260 [2021-04-28 23:45:42,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 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) [2021-04-28 23:45:42,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:45:42,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 260 [2021-04-28 23:45:42,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:45:42,394 INFO L129 PetriNetUnfolder]: 71/182 cut-off events. [2021-04-28 23:45:42,394 INFO L130 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2021-04-28 23:45:42,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 182 events. 71/182 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 991 event pairs, 33 based on Foata normal form. 19/114 useless extension candidates. Maximal degree in co-relation 415. Up to 109 conditions per place. [2021-04-28 23:45:42,398 INFO L132 encePairwiseOnDemand]: 251/260 looper letters, 8 selfloop transitions, 11 changer transitions 10/42 dead transitions. [2021-04-28 23:45:42,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 42 transitions, 184 flow [2021-04-28 23:45:42,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:45:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:45:42,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 890 transitions. [2021-04-28 23:45:42,402 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6846153846153846 [2021-04-28 23:45:42,403 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 890 transitions. [2021-04-28 23:45:42,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 890 transitions. [2021-04-28 23:45:42,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:45:42,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 890 transitions. [2021-04-28 23:45:42,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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) [2021-04-28 23:45:42,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 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) [2021-04-28 23:45:42,413 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 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) [2021-04-28 23:45:42,414 INFO L185 Difference]: Start difference. First operand has 32 places, 23 transitions, 90 flow. Second operand 5 states and 890 transitions. [2021-04-28 23:45:42,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 42 transitions, 184 flow [2021-04-28 23:45:42,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 178 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-04-28 23:45:42,418 INFO L241 Difference]: Finished difference. Result has 38 places, 32 transitions, 160 flow [2021-04-28 23:45:42,418 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2021-04-28 23:45:42,418 INFO L343 CegarLoopForPetriNet]: 106 programPoint places, -68 predicate places. [2021-04-28 23:45:42,418 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:45:42,418 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 32 transitions, 160 flow [2021-04-28 23:45:42,419 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 32 transitions, 160 flow [2021-04-28 23:45:42,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 160 flow [2021-04-28 23:45:42,441 INFO L129 PetriNetUnfolder]: 35/141 cut-off events. [2021-04-28 23:45:42,441 INFO L130 PetriNetUnfolder]: For 79/82 co-relation queries the response was YES. [2021-04-28 23:45:42,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 141 events. 35/141 cut-off events. For 79/82 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 812 event pairs, 24 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 383. Up to 65 conditions per place. [2021-04-28 23:45:42,443 INFO L146 LiptonReduction]: Number of co-enabled transitions 110 [2021-04-28 23:45:42,446 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:45:42,446 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:45:42,446 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 28 [2021-04-28 23:45:42,448 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 160 flow [2021-04-28 23:45:42,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 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) [2021-04-28 23:45:42,449 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:45:42,449 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:45:42,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-28 23:45:42,450 INFO L428 AbstractCegarLoop]: === Iteration 6 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:45:42,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:45:42,450 INFO L82 PathProgramCache]: Analyzing trace with hash 348953237, now seen corresponding path program 1 times [2021-04-28 23:45:42,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:45:42,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607713067] [2021-04-28 23:45:42,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:45:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:45:42,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:45:42,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:45:42,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:45:42,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:45:42,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:45:42,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-28 23:45:42,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:45:42,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 23:45:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:45:42,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607713067] [2021-04-28 23:45:42,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:45:42,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-28 23:45:42,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554114498] [2021-04-28 23:45:42,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 23:45:42,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:45:42,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 23:45:42,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-28 23:45:42,577 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 260 [2021-04-28 23:45:42,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 172.8) internal successors, (864), 5 states have internal predecessors, (864), 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) [2021-04-28 23:45:42,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:45:42,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 260 [2021-04-28 23:45:42,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:45:42,794 INFO L129 PetriNetUnfolder]: 20/111 cut-off events. [2021-04-28 23:45:42,794 INFO L130 PetriNetUnfolder]: For 123/169 co-relation queries the response was YES. [2021-04-28 23:45:42,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 111 events. 20/111 cut-off events. For 123/169 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 601 event pairs, 0 based on Foata normal form. 30/94 useless extension candidates. Maximal degree in co-relation 381. Up to 56 conditions per place. [2021-04-28 23:45:42,796 INFO L132 encePairwiseOnDemand]: 251/260 looper letters, 2 selfloop transitions, 18 changer transitions 6/39 dead transitions. [2021-04-28 23:45:42,796 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 246 flow [2021-04-28 23:45:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-28 23:45:42,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-28 23:45:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1232 transitions. [2021-04-28 23:45:42,802 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.676923076923077 [2021-04-28 23:45:42,803 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1232 transitions. [2021-04-28 23:45:42,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1232 transitions. [2021-04-28 23:45:42,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:45:42,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1232 transitions. [2021-04-28 23:45:42,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 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) [2021-04-28 23:45:42,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 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) [2021-04-28 23:45:42,816 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 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) [2021-04-28 23:45:42,816 INFO L185 Difference]: Start difference. First operand has 37 places, 32 transitions, 160 flow. Second operand 7 states and 1232 transitions. [2021-04-28 23:45:42,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 246 flow [2021-04-28 23:45:42,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 238 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-04-28 23:45:42,821 INFO L241 Difference]: Finished difference. Result has 45 places, 33 transitions, 215 flow [2021-04-28 23:45:42,821 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=215, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2021-04-28 23:45:42,822 INFO L343 CegarLoopForPetriNet]: 106 programPoint places, -61 predicate places. [2021-04-28 23:45:42,822 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:45:42,822 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 33 transitions, 215 flow [2021-04-28 23:45:42,823 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 33 transitions, 215 flow [2021-04-28 23:45:42,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 33 transitions, 215 flow [2021-04-28 23:45:42,839 INFO L129 PetriNetUnfolder]: 11/84 cut-off events. [2021-04-28 23:45:42,839 INFO L130 PetriNetUnfolder]: For 96/105 co-relation queries the response was YES. [2021-04-28 23:45:42,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 84 events. 11/84 cut-off events. For 96/105 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 411 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 289. Up to 38 conditions per place. [2021-04-28 23:45:42,840 INFO L146 LiptonReduction]: Number of co-enabled transitions 76 [2021-04-28 23:45:42,992 INFO L158 LiptonReduction]: Checked pairs total: 10 [2021-04-28 23:45:42,993 INFO L160 LiptonReduction]: Total number of compositions: 2 [2021-04-28 23:45:42,993 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 171 [2021-04-28 23:45:42,994 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 217 flow [2021-04-28 23:45:42,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 172.8) internal successors, (864), 5 states have internal predecessors, (864), 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) [2021-04-28 23:45:42,995 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:45:42,996 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:45:42,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-28 23:45:42,996 INFO L428 AbstractCegarLoop]: === Iteration 7 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:45:42,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:45:42,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1187903078, now seen corresponding path program 1 times [2021-04-28 23:45:42,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:45:42,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759063384] [2021-04-28 23:45:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:45:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:45:43,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:45:43,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-28 23:45:43,185 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.3 percent of original size [2021-04-28 23:45:43,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-28 23:45:43,246 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.1 percent of original size [2021-04-28 23:45:43,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-28 23:45:43,323 INFO L142 QuantifierPusher]: treesize reduction 26, result has 60.6 percent of original size [2021-04-28 23:45:43,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-28 23:45:43,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:45:43,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-28 23:45:43,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:45:43,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759063384] [2021-04-28 23:45:43,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:45:43,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-28 23:45:43,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677964646] [2021-04-28 23:45:43,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-28 23:45:43,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:45:43,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-28 23:45:43,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-28 23:45:43,445 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 262 [2021-04-28 23:45:43,447 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 217 flow. Second operand has 7 states, 7 states have (on average 151.85714285714286) internal successors, (1063), 7 states have internal predecessors, (1063), 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) [2021-04-28 23:45:43,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:45:43,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 262 [2021-04-28 23:45:43,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:45:43,623 INFO L129 PetriNetUnfolder]: 19/136 cut-off events. [2021-04-28 23:45:43,623 INFO L130 PetriNetUnfolder]: For 287/328 co-relation queries the response was YES. [2021-04-28 23:45:43,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 136 events. 19/136 cut-off events. For 287/328 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 825 event pairs, 0 based on Foata normal form. 18/107 useless extension candidates. Maximal degree in co-relation 540. Up to 70 conditions per place. [2021-04-28 23:45:43,626 INFO L132 encePairwiseOnDemand]: 258/262 looper letters, 7 selfloop transitions, 2 changer transitions 5/35 dead transitions. [2021-04-28 23:45:43,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 35 transitions, 257 flow [2021-04-28 23:45:43,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:45:43,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:45:43,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 616 transitions. [2021-04-28 23:45:43,632 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5877862595419847 [2021-04-28 23:45:43,632 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 616 transitions. [2021-04-28 23:45:43,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 616 transitions. [2021-04-28 23:45:43,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:45:43,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 616 transitions. [2021-04-28 23:45:43,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 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) [2021-04-28 23:45:43,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 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) [2021-04-28 23:45:43,640 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 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) [2021-04-28 23:45:43,640 INFO L185 Difference]: Start difference. First operand has 44 places, 33 transitions, 217 flow. Second operand 4 states and 616 transitions. [2021-04-28 23:45:43,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 35 transitions, 257 flow [2021-04-28 23:45:43,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 200 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-04-28 23:45:43,645 INFO L241 Difference]: Finished difference. Result has 42 places, 30 transitions, 158 flow [2021-04-28 23:45:43,646 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2021-04-28 23:45:43,646 INFO L343 CegarLoopForPetriNet]: 106 programPoint places, -64 predicate places. [2021-04-28 23:45:43,646 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:45:43,647 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 30 transitions, 158 flow [2021-04-28 23:45:43,647 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 30 transitions, 158 flow [2021-04-28 23:45:43,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 30 transitions, 158 flow [2021-04-28 23:45:43,662 INFO L129 PetriNetUnfolder]: 10/80 cut-off events. [2021-04-28 23:45:43,662 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2021-04-28 23:45:43,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 80 events. 10/80 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 402 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 210. Up to 37 conditions per place. [2021-04-28 23:45:43,663 INFO L146 LiptonReduction]: Number of co-enabled transitions 38 [2021-04-28 23:45:43,666 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:45:43,666 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:45:43,666 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-04-28 23:45:43,668 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 158 flow [2021-04-28 23:45:43,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 151.85714285714286) internal successors, (1063), 7 states have internal predecessors, (1063), 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) [2021-04-28 23:45:43,669 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:45:43,669 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:45:43,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-28 23:45:43,670 INFO L428 AbstractCegarLoop]: === Iteration 8 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:45:43,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:45:43,670 INFO L82 PathProgramCache]: Analyzing trace with hash 638217905, now seen corresponding path program 1 times [2021-04-28 23:45:43,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:45:43,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169134182] [2021-04-28 23:45:43,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:45:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-28 23:45:43,736 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-28 23:45:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-28 23:45:43,845 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-28 23:45:43,917 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-04-28 23:45:43,917 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-04-28 23:45:43,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-28 23:45:44,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 11:45:44 BasicIcfg [2021-04-28 23:45:44,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-28 23:45:44,042 INFO L168 Benchmark]: Toolchain (without parser) took 100359.86 ms. Allocated memory was 302.0 MB in the beginning and 654.3 MB in the end (delta: 352.3 MB). Free memory was 275.2 MB in the beginning and 317.5 MB in the end (delta: -42.3 MB). Peak memory consumption was 311.9 MB. Max. memory is 16.0 GB. [2021-04-28 23:45:44,043 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 302.0 MB. Free memory was 273.0 MB in the beginning and 272.8 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 23:45:44,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1115.85 ms. Allocated memory is still 302.0 MB. Free memory was 272.0 MB in the beginning and 269.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.0 GB. [2021-04-28 23:45:44,043 INFO L168 Benchmark]: Boogie Procedure Inliner took 121.61 ms. Allocated memory is still 302.0 MB. Free memory was 269.4 MB in the beginning and 267.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-28 23:45:44,044 INFO L168 Benchmark]: Boogie Preprocessor took 44.55 ms. Allocated memory is still 302.0 MB. Free memory was 267.3 MB in the beginning and 265.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-28 23:45:44,044 INFO L168 Benchmark]: RCFGBuilder took 2515.28 ms. Allocated memory is still 302.0 MB. Free memory was 265.2 MB in the beginning and 238.5 MB in the end (delta: 26.7 MB). Peak memory consumption was 161.5 MB. Max. memory is 16.0 GB. [2021-04-28 23:45:44,047 INFO L168 Benchmark]: TraceAbstraction took 96498.12 ms. Allocated memory was 302.0 MB in the beginning and 654.3 MB in the end (delta: 352.3 MB). Free memory was 237.4 MB in the beginning and 317.5 MB in the end (delta: -80.1 MB). Peak memory consumption was 271.2 MB. Max. memory is 16.0 GB. [2021-04-28 23:45:44,051 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 302.0 MB. Free memory was 273.0 MB in the beginning and 272.8 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 1115.85 ms. Allocated memory is still 302.0 MB. Free memory was 272.0 MB in the beginning and 269.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 121.61 ms. Allocated memory is still 302.0 MB. Free memory was 269.4 MB in the beginning and 267.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 44.55 ms. Allocated memory is still 302.0 MB. Free memory was 267.3 MB in the beginning and 265.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 2515.28 ms. Allocated memory is still 302.0 MB. Free memory was 265.2 MB in the beginning and 238.5 MB in the end (delta: 26.7 MB). Peak memory consumption was 161.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 96498.12 ms. Allocated memory was 302.0 MB in the beginning and 654.3 MB in the end (delta: 352.3 MB). Free memory was 237.4 MB in the beginning and 317.5 MB in the end (delta: -80.1 MB). Peak memory consumption was 271.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 89396.9ms, 83 PlacesBefore, 106 PlacesAfterwards, 78 TransitionsBefore, 101 TransitionsAfterwards, 926 CoEnabledTransitionPairs, 8 FixpointIterations, 108 TrivialSequentialCompositions, 69 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 178 TotalNumberOfCompositions, 8212 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2470, positive: 2289, positive conditional: 2289, positive unconditional: 0, negative: 181, negative conditional: 181, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1052, positive: 997, positive conditional: 0, positive unconditional: 997, negative: 55, negative conditional: 0, negative unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1052, positive: 997, positive conditional: 0, positive unconditional: 997, negative: 55, negative conditional: 0, negative unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1052, positive: 977, positive conditional: 0, positive unconditional: 977, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 75, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 55, negative conditional: 0, negative unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1479, positive: 92, positive conditional: 0, positive unconditional: 92, negative: 1387, negative conditional: 0, negative unconditional: 1387, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2470, positive: 1292, positive conditional: 1292, positive unconditional: 0, negative: 126, negative conditional: 126, negative unconditional: 0, unknown: 1052, unknown conditional: 1052, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1052, Positive cache size: 997, Positive conditional cache size: 997, Positive unconditional cache size: 0, Negative cache size: 55, Negative conditional cache size: 55, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 356.1ms, 103 PlacesBefore, 37 PlacesAfterwards, 30 TransitionsBefore, 30 TransitionsAfterwards, 462 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 414 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 81, positive: 59, positive conditional: 59, positive unconditional: 0, negative: 22, negative conditional: 22, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 29, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 29, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 29, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 343, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 343, negative conditional: 0, negative unconditional: 343, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 81, positive: 38, positive conditional: 38, positive unconditional: 0, negative: 14, negative conditional: 14, negative unconditional: 0, unknown: 29, unknown conditional: 29, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1081, Positive cache size: 1018, Positive conditional cache size: 1018, Positive unconditional cache size: 0, Negative cache size: 63, Negative conditional cache size: 63, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 256.7ms, 38 PlacesBefore, 28 PlacesAfterwards, 20 TransitionsBefore, 20 TransitionsAfterwards, 188 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 229 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 61, positive: 40, positive conditional: 40, positive unconditional: 0, negative: 21, negative conditional: 21, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 22, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 7, negative conditional: 2, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 22, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 7, negative conditional: 2, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 22, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 7, negative conditional: 2, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 242, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 223, negative conditional: 17, negative unconditional: 207, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 61, positive: 25, positive conditional: 25, positive unconditional: 0, negative: 14, negative conditional: 14, negative unconditional: 0, unknown: 22, unknown conditional: 22, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1103, Positive cache size: 1033, Positive conditional cache size: 1033, Positive unconditional cache size: 0, Negative cache size: 70, Negative conditional cache size: 70, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 402.8ms, 31 PlacesBefore, 30 PlacesAfterwards, 19 TransitionsBefore, 19 TransitionsAfterwards, 138 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 324 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 102, positive: 67, positive conditional: 67, positive unconditional: 0, negative: 35, negative conditional: 35, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 16, positive: 14, positive conditional: 11, positive unconditional: 3, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 16, positive: 14, positive conditional: 11, positive unconditional: 3, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 16, positive: 14, positive conditional: 0, positive unconditional: 14, 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: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 64, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 64, negative conditional: 64, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 102, positive: 53, positive conditional: 53, positive unconditional: 0, negative: 33, negative conditional: 33, negative unconditional: 0, unknown: 16, unknown conditional: 16, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1119, Positive cache size: 1047, Positive conditional cache size: 1047, Positive unconditional cache size: 0, Negative cache size: 72, Negative conditional cache size: 72, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1754.8ms, 32 PlacesBefore, 32 PlacesAfterwards, 22 TransitionsBefore, 23 TransitionsAfterwards, 138 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 98 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 31, positive: 25, positive conditional: 25, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 13, positive: 11, positive conditional: 11, positive unconditional: 0, 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: 13, positive: 11, positive conditional: 11, positive unconditional: 0, 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: 13, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 9, positive: 7, positive conditional: 7, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 403, positive: 306, positive conditional: 306, positive unconditional: 0, negative: 97, negative conditional: 0, negative unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 31, positive: 14, positive conditional: 14, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 13, unknown conditional: 13, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1132, Positive cache size: 1058, Positive conditional cache size: 1058, Positive unconditional cache size: 0, Negative cache size: 74, Negative conditional cache size: 74, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27.3ms, 38 PlacesBefore, 37 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 110 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): 1132, Positive cache size: 1058, Positive conditional cache size: 1058, Positive unconditional cache size: 0, Negative cache size: 74, Negative conditional cache size: 74, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 170.0ms, 45 PlacesBefore, 44 PlacesAfterwards, 33 TransitionsBefore, 33 TransitionsAfterwards, 76 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 10 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 10, 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: 5, positive: 5, positive conditional: 5, 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: 5, positive: 5, positive conditional: 5, 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: 5, positive: 5, positive conditional: 0, positive unconditional: 5, 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: 10, positive: 5, positive conditional: 5, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5, unknown conditional: 5, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1137, Positive cache size: 1063, Positive conditional cache size: 1063, Positive unconditional cache size: 0, Negative cache size: 74, Negative conditional cache size: 74, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.4ms, 42 PlacesBefore, 40 PlacesAfterwards, 30 TransitionsBefore, 30 TransitionsAfterwards, 38 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): 1137, Positive cache size: 1063, Positive conditional cache size: 1063, Positive unconditional cache size: 0, Negative cache size: 74, Negative conditional cache size: 74, Negative unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L711] 0 _Bool main$tmp_guard0; [L712] 0 _Bool main$tmp_guard1; [L714] 0 int x = 0; [L716] 0 int y = 0; [L717] 0 _Bool y$flush_delayed; [L718] 0 int y$mem_tmp; [L719] 0 _Bool y$r_buff0_thd0; [L720] 0 _Bool y$r_buff0_thd1; [L721] 0 _Bool y$r_buff0_thd2; [L722] 0 _Bool y$r_buff1_thd0; [L723] 0 _Bool y$r_buff1_thd1; [L724] 0 _Bool y$r_buff1_thd2; [L725] 0 _Bool y$read_delayed; [L726] 0 int *y$read_delayed_var; [L727] 0 int y$w_buff0; [L728] 0 _Bool y$w_buff0_used; [L729] 0 int y$w_buff1; [L730] 0 _Bool y$w_buff1_used; [L731] 0 _Bool weak$$choice0; [L732] 0 _Bool weak$$choice2; [L792] 0 pthread_t t2017; [L793] FCALL, FORK 0 pthread_create(&t2017, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L736] 1 y$w_buff1 = y$w_buff0 [L737] 1 y$w_buff0 = 2 [L738] 1 y$w_buff1_used = y$w_buff0_used [L739] 1 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 1 !(!expression) [L741] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L742] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L743] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L744] 1 y$r_buff0_thd1 = (_Bool)1 [L747] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L794] 0 pthread_t t2018; [L795] FCALL, FORK 0 pthread_create(&t2018, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L764] 2 __unbuffered_p1_EAX = x [L767] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L750] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L750] 1 y = y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L751] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L751] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L752] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L752] 1 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L753] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L753] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L754] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L754] 1 y$r_buff1_thd1 = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L770] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L770] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L770] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L770] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L771] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L771] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L772] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L772] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L773] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L773] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L774] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L774] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L757] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L759] 1 return 0; VAL [__unbuffered_cnt=1, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L777] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L779] 2 return 0; [L797] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L3] COND FALSE 0 !(!cond) [L801] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L801] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L801] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L801] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L802] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L802] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L803] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L803] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L804] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L804] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L805] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L805] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L808] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L809] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L810] 0 y$flush_delayed = weak$$choice2 [L811] 0 y$mem_tmp = y [L812] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L812] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L813] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L813] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0) [L813] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L813] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L814] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L814] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1) [L814] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L814] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L815] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L815] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used) [L815] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L815] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L816] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L816] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L817] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0) [L817] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L817] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L818] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L818] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L818] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L818] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L819] 0 main$tmp_guard1 = !(y == 2 && __unbuffered_p1_EAX == 1) [L820] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L820] 0 y = y$flush_delayed ? y$mem_tmp : y [L821] 0 y$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=1, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 79 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 96236.9ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1714.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 89517.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 45 SDtfs, 18 SDslu, 23 SDs, 0 SdLazy, 188 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 596.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 552.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=217occurred in iteration=6, InterpolantAutomatonStates: 31, 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: 40.8ms SsaConstructionTime, 466.4ms SatisfiabilityAnalysisTime, 1010.5ms InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 429 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...