/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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 03:28:26,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 03:28:26,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 03:28:26,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 03:28:26,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 03:28:26,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 03:28:26,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 03:28:26,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 03:28:26,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 03:28:26,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 03:28:26,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 03:28:26,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 03:28:26,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 03:28:26,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 03:28:26,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 03:28:26,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 03:28:26,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 03:28:26,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 03:28:26,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 03:28:26,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 03:28:26,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 03:28:26,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 03:28:26,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 03:28:26,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 03:28:26,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 03:28:26,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 03:28:26,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 03:28:26,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 03:28:26,165 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-VariableLbe.epf [2023-01-28 03:28:26,183 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 03:28:26,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 03:28:26,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 03:28:26,184 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 03:28:26,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 03:28:26,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 03:28:26,184 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 03:28:26,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 03:28:26,184 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 03:28:26,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 03:28:26,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 03:28:26,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 03:28:26,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 03:28:26,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 03:28:26,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 03:28:26,185 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 03:28:26,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 03:28:26,185 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 03:28:26,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 03:28:26,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 03:28:26,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 03:28:26,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 03:28:26,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 03:28:26,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:28:26,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 03:28:26,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 03:28:26,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 03:28:26,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 03:28:26,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 03:28:26,186 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 03:28:26,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 03:28:26,186 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 03:28:26,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 03:28:26,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 03:28:26,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 03:28:26,372 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 03:28:26,375 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 03:28:26,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2023-01-28 03:28:27,318 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 03:28:27,513 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 03:28:27,514 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2023-01-28 03:28:27,519 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ae6c7ba3/1f97eb6124934bb5b52d1c841dcde294/FLAG3d5938c7b [2023-01-28 03:28:27,533 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ae6c7ba3/1f97eb6124934bb5b52d1c841dcde294 [2023-01-28 03:28:27,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 03:28:27,537 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 03:28:27,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 03:28:27,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 03:28:27,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 03:28:27,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:28:27" (1/1) ... [2023-01-28 03:28:27,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@765b4ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:27, skipping insertion in model container [2023-01-28 03:28:27,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:28:27" (1/1) ... [2023-01-28 03:28:27,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 03:28:27,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 03:28:27,693 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2023-01-28 03:28:27,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:28:27,702 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 03:28:27,716 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2023-01-28 03:28:27,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:28:27,721 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 03:28:27,722 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 03:28:27,726 INFO L208 MainTranslator]: Completed translation [2023-01-28 03:28:27,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:27 WrapperNode [2023-01-28 03:28:27,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 03:28:27,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 03:28:27,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 03:28:27,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 03:28:27,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:27" (1/1) ... [2023-01-28 03:28:27,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:27" (1/1) ... [2023-01-28 03:28:27,748 INFO L138 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-01-28 03:28:27,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 03:28:27,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 03:28:27,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 03:28:27,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 03:28:27,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:27" (1/1) ... [2023-01-28 03:28:27,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:27" (1/1) ... [2023-01-28 03:28:27,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:27" (1/1) ... [2023-01-28 03:28:27,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:27" (1/1) ... [2023-01-28 03:28:27,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:27" (1/1) ... [2023-01-28 03:28:27,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:27" (1/1) ... [2023-01-28 03:28:27,763 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:27" (1/1) ... [2023-01-28 03:28:27,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:27" (1/1) ... [2023-01-28 03:28:27,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 03:28:27,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 03:28:27,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 03:28:27,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 03:28:27,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:27" (1/1) ... [2023-01-28 03:28:27,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:28:27,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:27,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 03:28:27,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 03:28:27,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 03:28:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 03:28:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 03:28:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 03:28:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 03:28:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 03:28:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 03:28:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 03:28:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 03:28:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 03:28:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 03:28:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 03:28:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 03:28:27,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 03:28:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 03:28:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 03:28:27,848 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 03:28:27,938 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 03:28:27,940 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 03:28:28,191 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 03:28:28,218 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 03:28:28,219 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 03:28:28,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:28:28 BoogieIcfgContainer [2023-01-28 03:28:28,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 03:28:28,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 03:28:28,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 03:28:28,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 03:28:28,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 03:28:27" (1/3) ... [2023-01-28 03:28:28,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e6108e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:28:28, skipping insertion in model container [2023-01-28 03:28:28,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:28:27" (2/3) ... [2023-01-28 03:28:28,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e6108e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:28:28, skipping insertion in model container [2023-01-28 03:28:28,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:28:28" (3/3) ... [2023-01-28 03:28:28,225 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2023-01-28 03:28:28,237 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 03:28:28,237 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 03:28:28,237 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 03:28:28,294 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 03:28:28,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 127 transitions, 278 flow [2023-01-28 03:28:28,365 INFO L130 PetriNetUnfolder]: 16/124 cut-off events. [2023-01-28 03:28:28,365 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 03:28:28,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 124 events. 16/124 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2023-01-28 03:28:28,370 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 127 transitions, 278 flow [2023-01-28 03:28:28,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 114 transitions, 246 flow [2023-01-28 03:28:28,375 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 03:28:28,381 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 114 transitions, 246 flow [2023-01-28 03:28:28,383 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 114 transitions, 246 flow [2023-01-28 03:28:28,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 114 transitions, 246 flow [2023-01-28 03:28:28,402 INFO L130 PetriNetUnfolder]: 16/114 cut-off events. [2023-01-28 03:28:28,403 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 03:28:28,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 114 events. 16/114 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 144 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2023-01-28 03:28:28,406 INFO L119 LiptonReduction]: Number of co-enabled transitions 3240 [2023-01-28 03:28:31,461 INFO L134 LiptonReduction]: Checked pairs total: 3005 [2023-01-28 03:28:31,461 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-01-28 03:28:31,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 03:28:31,475 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1fc52ec8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 03:28:31,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 03:28:31,479 INFO L130 PetriNetUnfolder]: 3/18 cut-off events. [2023-01-28 03:28:31,479 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 03:28:31,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:31,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:31,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:28:31,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:31,484 INFO L85 PathProgramCache]: Analyzing trace with hash -135806213, now seen corresponding path program 1 times [2023-01-28 03:28:31,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:31,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591518738] [2023-01-28 03:28:31,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:31,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:31,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:31,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591518738] [2023-01-28 03:28:31,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591518738] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:28:31,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:28:31,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 03:28:31,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503685651] [2023-01-28 03:28:31,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:28:31,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 03:28:31,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:31,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 03:28:31,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 03:28:31,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 240 [2023-01-28 03:28:31,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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) [2023-01-28 03:28:31,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:31,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 240 [2023-01-28 03:28:31,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:31,839 INFO L130 PetriNetUnfolder]: 111/168 cut-off events. [2023-01-28 03:28:31,840 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-01-28 03:28:31,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 168 events. 111/168 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 334 event pairs, 17 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 244. Up to 105 conditions per place. [2023-01-28 03:28:31,842 INFO L137 encePairwiseOnDemand]: 237/240 looper letters, 27 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-01-28 03:28:31,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 140 flow [2023-01-28 03:28:31,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 03:28:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 03:28:31,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-01-28 03:28:31,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2023-01-28 03:28:31,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-01-28 03:28:31,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-01-28 03:28:31,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:31,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-01-28 03:28:31,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2023-01-28 03:28:31,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 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) [2023-01-28 03:28:31,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 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) [2023-01-28 03:28:31,867 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 56 flow. Second operand 3 states and 357 transitions. [2023-01-28 03:28:31,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 140 flow [2023-01-28 03:28:31,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 29 transitions, 124 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 03:28:31,870 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2023-01-28 03:28:31,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2023-01-28 03:28:31,874 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2023-01-28 03:28:31,875 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2023-01-28 03:28:31,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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) [2023-01-28 03:28:31,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:31,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:31,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 03:28:31,876 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:28:31,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:31,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1305020753, now seen corresponding path program 1 times [2023-01-28 03:28:31,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:31,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902924323] [2023-01-28 03:28:31,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:31,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:31,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:31,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:31,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902924323] [2023-01-28 03:28:31,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902924323] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:28:31,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:28:31,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 03:28:31,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121064653] [2023-01-28 03:28:31,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:28:31,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 03:28:31,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:31,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 03:28:31,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 03:28:31,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 240 [2023-01-28 03:28:31,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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) [2023-01-28 03:28:32,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:32,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 240 [2023-01-28 03:28:32,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:32,073 INFO L130 PetriNetUnfolder]: 151/226 cut-off events. [2023-01-28 03:28:32,073 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-01-28 03:28:32,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 226 events. 151/226 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 549 event pairs, 11 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 188. Up to 185 conditions per place. [2023-01-28 03:28:32,078 INFO L137 encePairwiseOnDemand]: 237/240 looper letters, 29 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-01-28 03:28:32,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 31 transitions, 149 flow [2023-01-28 03:28:32,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 03:28:32,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 03:28:32,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-01-28 03:28:32,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2023-01-28 03:28:32,082 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-01-28 03:28:32,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-01-28 03:28:32,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:32,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-01-28 03:28:32,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2023-01-28 03:28:32,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 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) [2023-01-28 03:28:32,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 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) [2023-01-28 03:28:32,086 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 3 states and 357 transitions. [2023-01-28 03:28:32,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 31 transitions, 149 flow [2023-01-28 03:28:32,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 31 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 03:28:32,087 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 66 flow [2023-01-28 03:28:32,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2023-01-28 03:28:32,088 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-01-28 03:28:32,088 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 66 flow [2023-01-28 03:28:32,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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) [2023-01-28 03:28:32,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:32,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:32,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 03:28:32,089 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:28:32,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:32,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1756026437, now seen corresponding path program 1 times [2023-01-28 03:28:32,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:32,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571231195] [2023-01-28 03:28:32,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:32,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:32,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 03:28:32,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:32,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571231195] [2023-01-28 03:28:32,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571231195] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:28:32,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:28:32,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 03:28:32,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110999265] [2023-01-28 03:28:32,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:28:32,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 03:28:32,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:32,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 03:28:32,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 03:28:32,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 240 [2023-01-28 03:28:32,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2023-01-28 03:28:32,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:32,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 240 [2023-01-28 03:28:32,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:32,266 INFO L130 PetriNetUnfolder]: 220/325 cut-off events. [2023-01-28 03:28:32,267 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2023-01-28 03:28:32,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 325 events. 220/325 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 867 event pairs, 28 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 596. Up to 243 conditions per place. [2023-01-28 03:28:32,268 INFO L137 encePairwiseOnDemand]: 237/240 looper letters, 31 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-01-28 03:28:32,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 171 flow [2023-01-28 03:28:32,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 03:28:32,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 03:28:32,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-01-28 03:28:32,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2023-01-28 03:28:32,270 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-01-28 03:28:32,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-01-28 03:28:32,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:32,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-01-28 03:28:32,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2023-01-28 03:28:32,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 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) [2023-01-28 03:28:32,272 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 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) [2023-01-28 03:28:32,273 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 66 flow. Second operand 3 states and 357 transitions. [2023-01-28 03:28:32,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 171 flow [2023-01-28 03:28:32,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 33 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 03:28:32,274 INFO L231 Difference]: Finished difference. Result has 27 places, 22 transitions, 76 flow [2023-01-28 03:28:32,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=27, PETRI_TRANSITIONS=22} [2023-01-28 03:28:32,274 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-01-28 03:28:32,274 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 76 flow [2023-01-28 03:28:32,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2023-01-28 03:28:32,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:32,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:32,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 03:28:32,275 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:28:32,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:32,275 INFO L85 PathProgramCache]: Analyzing trace with hash -170860382, now seen corresponding path program 1 times [2023-01-28 03:28:32,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:32,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130439107] [2023-01-28 03:28:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:32,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:32,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 03:28:32,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:32,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130439107] [2023-01-28 03:28:32,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130439107] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:32,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290188440] [2023-01-28 03:28:32,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:32,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:32,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:32,494 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:28:32,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 03:28:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:32,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 03:28:32,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:32,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:32,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:33,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290188440] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:33,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:33,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 4] total 10 [2023-01-28 03:28:33,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515609045] [2023-01-28 03:28:33,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:33,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 03:28:33,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:33,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 03:28:33,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-01-28 03:28:33,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 240 [2023-01-28 03:28:33,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 76 flow. Second operand has 11 states, 11 states have (on average 87.45454545454545) internal successors, (962), 11 states have internal predecessors, (962), 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) [2023-01-28 03:28:33,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:33,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 240 [2023-01-28 03:28:33,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:33,534 INFO L130 PetriNetUnfolder]: 397/582 cut-off events. [2023-01-28 03:28:33,534 INFO L131 PetriNetUnfolder]: For 223/223 co-relation queries the response was YES. [2023-01-28 03:28:33,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 582 events. 397/582 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1756 event pairs, 0 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 489. Up to 177 conditions per place. [2023-01-28 03:28:33,537 INFO L137 encePairwiseOnDemand]: 234/240 looper letters, 116 selfloop transitions, 29 changer transitions 0/145 dead transitions. [2023-01-28 03:28:33,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 145 transitions, 772 flow [2023-01-28 03:28:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 03:28:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 03:28:33,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1553 transitions. [2023-01-28 03:28:33,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38063725490196076 [2023-01-28 03:28:33,541 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1553 transitions. [2023-01-28 03:28:33,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1553 transitions. [2023-01-28 03:28:33,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:33,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1553 transitions. [2023-01-28 03:28:33,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 91.3529411764706) internal successors, (1553), 17 states have internal predecessors, (1553), 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) [2023-01-28 03:28:33,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 240.0) internal successors, (4320), 18 states have internal predecessors, (4320), 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) [2023-01-28 03:28:33,554 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 240.0) internal successors, (4320), 18 states have internal predecessors, (4320), 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) [2023-01-28 03:28:33,554 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 76 flow. Second operand 17 states and 1553 transitions. [2023-01-28 03:28:33,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 145 transitions, 772 flow [2023-01-28 03:28:33,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 145 transitions, 766 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 03:28:33,558 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 319 flow [2023-01-28 03:28:33,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=319, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2023-01-28 03:28:33,560 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 24 predicate places. [2023-01-28 03:28:33,560 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 319 flow [2023-01-28 03:28:33,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 87.45454545454545) internal successors, (962), 11 states have internal predecessors, (962), 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) [2023-01-28 03:28:33,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:33,561 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:33,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 03:28:33,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:33,766 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:28:33,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:33,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1244112525, now seen corresponding path program 2 times [2023-01-28 03:28:33,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:33,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523760287] [2023-01-28 03:28:33,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:33,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 03:28:33,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:33,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523760287] [2023-01-28 03:28:33,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523760287] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:33,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619346857] [2023-01-28 03:28:33,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:28:33,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:33,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:33,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:28:34,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 03:28:34,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:28:34,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:28:34,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 03:28:34,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 03:28:34,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 03:28:34,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619346857] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:34,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:34,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 4] total 8 [2023-01-28 03:28:34,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153009082] [2023-01-28 03:28:34,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:34,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 03:28:34,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:34,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 03:28:34,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-01-28 03:28:34,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 240 [2023-01-28 03:28:34,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 319 flow. Second operand has 9 states, 9 states have (on average 101.88888888888889) internal successors, (917), 9 states have internal predecessors, (917), 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) [2023-01-28 03:28:34,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:34,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 240 [2023-01-28 03:28:34,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:34,579 INFO L130 PetriNetUnfolder]: 503/734 cut-off events. [2023-01-28 03:28:34,579 INFO L131 PetriNetUnfolder]: For 1625/1625 co-relation queries the response was YES. [2023-01-28 03:28:34,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2833 conditions, 734 events. 503/734 cut-off events. For 1625/1625 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2366 event pairs, 9 based on Foata normal form. 0/630 useless extension candidates. Maximal degree in co-relation 2162. Up to 223 conditions per place. [2023-01-28 03:28:34,584 INFO L137 encePairwiseOnDemand]: 235/240 looper letters, 148 selfloop transitions, 30 changer transitions 0/178 dead transitions. [2023-01-28 03:28:34,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 178 transitions, 1451 flow [2023-01-28 03:28:34,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 03:28:34,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 03:28:34,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1048 transitions. [2023-01-28 03:28:34,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2023-01-28 03:28:34,586 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1048 transitions. [2023-01-28 03:28:34,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1048 transitions. [2023-01-28 03:28:34,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:34,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1048 transitions. [2023-01-28 03:28:34,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 104.8) internal successors, (1048), 10 states have internal predecessors, (1048), 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) [2023-01-28 03:28:34,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 240.0) internal successors, (2640), 11 states have internal predecessors, (2640), 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) [2023-01-28 03:28:34,591 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 240.0) internal successors, (2640), 11 states have internal predecessors, (2640), 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) [2023-01-28 03:28:34,591 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 319 flow. Second operand 10 states and 1048 transitions. [2023-01-28 03:28:34,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 178 transitions, 1451 flow [2023-01-28 03:28:34,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 178 transitions, 1116 flow, removed 143 selfloop flow, removed 3 redundant places. [2023-01-28 03:28:34,603 INFO L231 Difference]: Finished difference. Result has 61 places, 75 transitions, 511 flow [2023-01-28 03:28:34,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=511, PETRI_PLACES=61, PETRI_TRANSITIONS=75} [2023-01-28 03:28:34,605 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 35 predicate places. [2023-01-28 03:28:34,607 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 75 transitions, 511 flow [2023-01-28 03:28:34,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 101.88888888888889) internal successors, (917), 9 states have internal predecessors, (917), 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) [2023-01-28 03:28:34,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:34,607 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:34,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 03:28:34,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:34,836 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:28:34,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:34,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1158182375, now seen corresponding path program 3 times [2023-01-28 03:28:34,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:34,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027942136] [2023-01-28 03:28:34,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:34,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:35,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:35,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:35,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027942136] [2023-01-28 03:28:35,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027942136] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:35,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140705058] [2023-01-28 03:28:35,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:28:35,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:35,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:35,701 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:28:35,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 03:28:35,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 03:28:35,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:28:35,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-28 03:28:35,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:36,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:37,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140705058] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:37,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:37,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 20 [2023-01-28 03:28:37,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963024541] [2023-01-28 03:28:37,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:37,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 03:28:37,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:37,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 03:28:37,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2023-01-28 03:28:37,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 240 [2023-01-28 03:28:37,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 75 transitions, 511 flow. Second operand has 22 states, 22 states have (on average 74.81818181818181) internal successors, (1646), 22 states have internal predecessors, (1646), 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) [2023-01-28 03:28:37,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:37,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 240 [2023-01-28 03:28:37,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:39,212 INFO L130 PetriNetUnfolder]: 2467/3512 cut-off events. [2023-01-28 03:28:39,213 INFO L131 PetriNetUnfolder]: For 12642/12642 co-relation queries the response was YES. [2023-01-28 03:28:39,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13933 conditions, 3512 events. 2467/3512 cut-off events. For 12642/12642 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 15114 event pairs, 18 based on Foata normal form. 32/3210 useless extension candidates. Maximal degree in co-relation 12410. Up to 801 conditions per place. [2023-01-28 03:28:39,232 INFO L137 encePairwiseOnDemand]: 232/240 looper letters, 224 selfloop transitions, 410 changer transitions 24/658 dead transitions. [2023-01-28 03:28:39,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 658 transitions, 5364 flow [2023-01-28 03:28:39,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-01-28 03:28:39,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-01-28 03:28:39,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2933 transitions. [2023-01-28 03:28:39,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33946759259259257 [2023-01-28 03:28:39,239 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2933 transitions. [2023-01-28 03:28:39,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2933 transitions. [2023-01-28 03:28:39,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:39,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2933 transitions. [2023-01-28 03:28:39,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 81.47222222222223) internal successors, (2933), 36 states have internal predecessors, (2933), 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) [2023-01-28 03:28:39,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 240.0) internal successors, (8880), 37 states have internal predecessors, (8880), 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) [2023-01-28 03:28:39,254 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 240.0) internal successors, (8880), 37 states have internal predecessors, (8880), 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) [2023-01-28 03:28:39,254 INFO L175 Difference]: Start difference. First operand has 61 places, 75 transitions, 511 flow. Second operand 36 states and 2933 transitions. [2023-01-28 03:28:39,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 658 transitions, 5364 flow [2023-01-28 03:28:39,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 658 transitions, 4976 flow, removed 183 selfloop flow, removed 1 redundant places. [2023-01-28 03:28:39,303 INFO L231 Difference]: Finished difference. Result has 107 places, 472 transitions, 4389 flow [2023-01-28 03:28:39,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4389, PETRI_PLACES=107, PETRI_TRANSITIONS=472} [2023-01-28 03:28:39,305 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 81 predicate places. [2023-01-28 03:28:39,305 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 472 transitions, 4389 flow [2023-01-28 03:28:39,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 74.81818181818181) internal successors, (1646), 22 states have internal predecessors, (1646), 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) [2023-01-28 03:28:39,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:39,306 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:39,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 03:28:39,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:39,515 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:28:39,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:39,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1565513747, now seen corresponding path program 4 times [2023-01-28 03:28:39,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:39,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031520191] [2023-01-28 03:28:39,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:39,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:40,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:40,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031520191] [2023-01-28 03:28:40,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031520191] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:40,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382994772] [2023-01-28 03:28:40,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:28:40,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:40,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:40,357 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:28:40,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 03:28:40,420 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:28:40,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:28:40,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-28 03:28:40,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:40,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 03:28:41,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382994772] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:41,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:41,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 6] total 22 [2023-01-28 03:28:41,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45337383] [2023-01-28 03:28:41,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:41,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 03:28:41,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:41,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 03:28:41,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2023-01-28 03:28:41,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 240 [2023-01-28 03:28:41,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 472 transitions, 4389 flow. Second operand has 24 states, 24 states have (on average 74.58333333333333) internal successors, (1790), 24 states have internal predecessors, (1790), 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) [2023-01-28 03:28:41,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:41,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 240 [2023-01-28 03:28:41,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:44,653 INFO L130 PetriNetUnfolder]: 6206/8902 cut-off events. [2023-01-28 03:28:44,653 INFO L131 PetriNetUnfolder]: For 40470/40470 co-relation queries the response was YES. [2023-01-28 03:28:44,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42649 conditions, 8902 events. 6206/8902 cut-off events. For 40470/40470 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 46320 event pairs, 26 based on Foata normal form. 54/8540 useless extension candidates. Maximal degree in co-relation 41148. Up to 2127 conditions per place. [2023-01-28 03:28:44,703 INFO L137 encePairwiseOnDemand]: 232/240 looper letters, 500 selfloop transitions, 1094 changer transitions 63/1657 dead transitions. [2023-01-28 03:28:44,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 1657 transitions, 17162 flow [2023-01-28 03:28:44,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-01-28 03:28:44,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-01-28 03:28:44,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3834 transitions. [2023-01-28 03:28:44,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3398936170212766 [2023-01-28 03:28:44,711 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 3834 transitions. [2023-01-28 03:28:44,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 3834 transitions. [2023-01-28 03:28:44,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:44,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 3834 transitions. [2023-01-28 03:28:44,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 81.57446808510639) internal successors, (3834), 47 states have internal predecessors, (3834), 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) [2023-01-28 03:28:44,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 240.0) internal successors, (11520), 48 states have internal predecessors, (11520), 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) [2023-01-28 03:28:44,727 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 240.0) internal successors, (11520), 48 states have internal predecessors, (11520), 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) [2023-01-28 03:28:44,727 INFO L175 Difference]: Start difference. First operand has 107 places, 472 transitions, 4389 flow. Second operand 47 states and 3834 transitions. [2023-01-28 03:28:44,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 1657 transitions, 17162 flow [2023-01-28 03:28:45,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 1657 transitions, 15778 flow, removed 690 selfloop flow, removed 1 redundant places. [2023-01-28 03:28:45,278 INFO L231 Difference]: Finished difference. Result has 172 places, 1354 transitions, 15630 flow [2023-01-28 03:28:45,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=3817, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=349, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=15630, PETRI_PLACES=172, PETRI_TRANSITIONS=1354} [2023-01-28 03:28:45,279 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 146 predicate places. [2023-01-28 03:28:45,279 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 1354 transitions, 15630 flow [2023-01-28 03:28:45,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 74.58333333333333) internal successors, (1790), 24 states have internal predecessors, (1790), 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) [2023-01-28 03:28:45,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:45,280 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:45,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 03:28:45,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:45,488 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:28:45,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:45,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1531481615, now seen corresponding path program 5 times [2023-01-28 03:28:45,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:45,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703677551] [2023-01-28 03:28:45,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:45,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:46,642 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:46,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:46,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703677551] [2023-01-28 03:28:46,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703677551] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:46,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922902630] [2023-01-28 03:28:46,643 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:28:46,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:46,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:46,660 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:28:46,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 03:28:46,734 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:28:46,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:28:46,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-28 03:28:46,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:47,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:47,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:47,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922902630] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:47,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:47,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 24 [2023-01-28 03:28:47,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616440812] [2023-01-28 03:28:47,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:47,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 03:28:47,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:47,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 03:28:47,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2023-01-28 03:28:47,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 240 [2023-01-28 03:28:47,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 1354 transitions, 15630 flow. Second operand has 26 states, 26 states have (on average 69.26923076923077) internal successors, (1801), 26 states have internal predecessors, (1801), 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) [2023-01-28 03:28:47,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:47,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 240 [2023-01-28 03:28:47,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:58,177 INFO L130 PetriNetUnfolder]: 17734/24832 cut-off events. [2023-01-28 03:28:58,177 INFO L131 PetriNetUnfolder]: For 146156/146156 co-relation queries the response was YES. [2023-01-28 03:28:58,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148649 conditions, 24832 events. 17734/24832 cut-off events. For 146156/146156 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 143648 event pairs, 28 based on Foata normal form. 57/24713 useless extension candidates. Maximal degree in co-relation 145971. Up to 7423 conditions per place. [2023-01-28 03:28:58,347 INFO L137 encePairwiseOnDemand]: 232/240 looper letters, 1184 selfloop transitions, 3774 changer transitions 43/5001 dead transitions. [2023-01-28 03:28:58,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 5001 transitions, 66210 flow [2023-01-28 03:28:58,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-01-28 03:28:58,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2023-01-28 03:28:58,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 6756 transitions. [2023-01-28 03:28:58,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3162921348314607 [2023-01-28 03:28:58,355 INFO L72 ComplementDD]: Start complementDD. Operand 89 states and 6756 transitions. [2023-01-28 03:28:58,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 6756 transitions. [2023-01-28 03:28:58,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:58,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 89 states and 6756 transitions. [2023-01-28 03:28:58,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 90 states, 89 states have (on average 75.91011235955057) internal successors, (6756), 89 states have internal predecessors, (6756), 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) [2023-01-28 03:28:58,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 90 states, 90 states have (on average 240.0) internal successors, (21600), 90 states have internal predecessors, (21600), 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) [2023-01-28 03:28:58,394 INFO L81 ComplementDD]: Finished complementDD. Result has 90 states, 90 states have (on average 240.0) internal successors, (21600), 90 states have internal predecessors, (21600), 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) [2023-01-28 03:28:58,394 INFO L175 Difference]: Start difference. First operand has 172 places, 1354 transitions, 15630 flow. Second operand 89 states and 6756 transitions. [2023-01-28 03:28:58,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 5001 transitions, 66210 flow [2023-01-28 03:29:07,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 5001 transitions, 63967 flow, removed 1112 selfloop flow, removed 2 redundant places. [2023-01-28 03:29:07,715 INFO L231 Difference]: Finished difference. Result has 293 places, 4504 transitions, 66708 flow [2023-01-28 03:29:07,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=15061, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=89, PETRI_FLOW=66708, PETRI_PLACES=293, PETRI_TRANSITIONS=4504} [2023-01-28 03:29:07,716 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 267 predicate places. [2023-01-28 03:29:07,717 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 4504 transitions, 66708 flow [2023-01-28 03:29:07,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 69.26923076923077) internal successors, (1801), 26 states have internal predecessors, (1801), 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) [2023-01-28 03:29:07,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:29:07,717 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:29:07,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 03:29:07,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:29:07,923 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:29:07,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:29:07,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1711291265, now seen corresponding path program 6 times [2023-01-28 03:29:07,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:29:07,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174783164] [2023-01-28 03:29:07,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:29:07,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:29:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:29:08,926 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:29:08,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:29:08,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174783164] [2023-01-28 03:29:08,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174783164] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:29:08,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349726051] [2023-01-28 03:29:08,927 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:29:08,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:29:08,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:29:08,928 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:29:08,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 03:29:09,001 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 03:29:09,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:29:09,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-28 03:29:09,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:29:09,254 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:29:09,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:29:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:29:09,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349726051] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:29:09,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:29:09,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 23 [2023-01-28 03:29:09,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808123576] [2023-01-28 03:29:09,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:29:09,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 03:29:09,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:29:09,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 03:29:09,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2023-01-28 03:29:09,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 240 [2023-01-28 03:29:09,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 4504 transitions, 66708 flow. Second operand has 25 states, 25 states have (on average 74.16) internal successors, (1854), 25 states have internal predecessors, (1854), 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) [2023-01-28 03:29:09,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:29:09,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 240 [2023-01-28 03:29:09,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:29:35,458 INFO L130 PetriNetUnfolder]: 30522/43870 cut-off events. [2023-01-28 03:29:35,458 INFO L131 PetriNetUnfolder]: For 400834/400834 co-relation queries the response was YES. [2023-01-28 03:29:35,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313607 conditions, 43870 events. 30522/43870 cut-off events. For 400834/400834 co-relation queries the response was YES. Maximal size of possible extension queue 2154. Compared 290556 event pairs, 82 based on Foata normal form. 68/43938 useless extension candidates. Maximal degree in co-relation 312221. Up to 13621 conditions per place. [2023-01-28 03:29:36,062 INFO L137 encePairwiseOnDemand]: 232/240 looper letters, 2759 selfloop transitions, 6119 changer transitions 90/8968 dead transitions. [2023-01-28 03:29:36,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 8968 transitions, 147419 flow [2023-01-28 03:29:36,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-01-28 03:29:36,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2023-01-28 03:29:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 6706 transitions. [2023-01-28 03:29:36,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3366465863453815 [2023-01-28 03:29:36,069 INFO L72 ComplementDD]: Start complementDD. Operand 83 states and 6706 transitions. [2023-01-28 03:29:36,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 6706 transitions. [2023-01-28 03:29:36,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:29:36,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 83 states and 6706 transitions. [2023-01-28 03:29:36,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 84 states, 83 states have (on average 80.79518072289157) internal successors, (6706), 83 states have internal predecessors, (6706), 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) [2023-01-28 03:29:36,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 84 states, 84 states have (on average 240.0) internal successors, (20160), 84 states have internal predecessors, (20160), 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) [2023-01-28 03:29:36,092 INFO L81 ComplementDD]: Finished complementDD. Result has 84 states, 84 states have (on average 240.0) internal successors, (20160), 84 states have internal predecessors, (20160), 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) [2023-01-28 03:29:36,092 INFO L175 Difference]: Start difference. First operand has 293 places, 4504 transitions, 66708 flow. Second operand 83 states and 6706 transitions. [2023-01-28 03:29:36,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 8968 transitions, 147419 flow [2023-01-28 03:30:39,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 8968 transitions, 140951 flow, removed 3062 selfloop flow, removed 13 redundant places. [2023-01-28 03:30:39,768 INFO L231 Difference]: Finished difference. Result has 399 places, 7918 transitions, 138546 flow [2023-01-28 03:30:39,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=63804, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3098, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=837, PETRI_DIFFERENCE_SUBTRAHEND_STATES=83, PETRI_FLOW=138546, PETRI_PLACES=399, PETRI_TRANSITIONS=7918} [2023-01-28 03:30:39,773 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 373 predicate places. [2023-01-28 03:30:39,773 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 7918 transitions, 138546 flow [2023-01-28 03:30:39,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 74.16) internal successors, (1854), 25 states have internal predecessors, (1854), 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) [2023-01-28 03:30:39,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:30:39,774 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:30:39,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 03:30:39,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:30:39,980 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:30:39,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:30:39,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1401432863, now seen corresponding path program 7 times [2023-01-28 03:30:39,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:30:39,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721944970] [2023-01-28 03:30:39,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:30:39,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:30:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:30:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:30:40,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:30:40,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721944970] [2023-01-28 03:30:40,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721944970] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:30:40,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635752467] [2023-01-28 03:30:40,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:30:40,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:30:40,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:30:40,604 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:30:40,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 03:30:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:30:40,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-28 03:30:40,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:30:41,003 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:30:41,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:30:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:30:41,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635752467] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:30:41,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:30:41,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 22 [2023-01-28 03:30:41,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912202619] [2023-01-28 03:30:41,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:30:41,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 03:30:41,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:30:41,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 03:30:41,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-01-28 03:30:41,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 240 [2023-01-28 03:30:41,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 7918 transitions, 138546 flow. Second operand has 24 states, 24 states have (on average 74.16666666666667) internal successors, (1780), 24 states have internal predecessors, (1780), 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) [2023-01-28 03:30:41,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:30:41,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 240 [2023-01-28 03:30:41,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:31:58,745 INFO L130 PetriNetUnfolder]: 55768/80973 cut-off events. [2023-01-28 03:31:58,745 INFO L131 PetriNetUnfolder]: For 912151/912151 co-relation queries the response was YES. [2023-01-28 03:32:00,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660732 conditions, 80973 events. 55768/80973 cut-off events. For 912151/912151 co-relation queries the response was YES. Maximal size of possible extension queue 3859. Compared 591688 event pairs, 148 based on Foata normal form. 188/81161 useless extension candidates. Maximal degree in co-relation 658230. Up to 23873 conditions per place. [2023-01-28 03:32:00,606 INFO L137 encePairwiseOnDemand]: 232/240 looper letters, 4311 selfloop transitions, 11241 changer transitions 238/15790 dead transitions. [2023-01-28 03:32:00,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 15790 transitions, 304628 flow [2023-01-28 03:32:00,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-01-28 03:32:00,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2023-01-28 03:32:00,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 6895 transitions. [2023-01-28 03:32:00,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3340600775193798 [2023-01-28 03:32:00,613 INFO L72 ComplementDD]: Start complementDD. Operand 86 states and 6895 transitions. [2023-01-28 03:32:00,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 6895 transitions. [2023-01-28 03:32:00,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:32:00,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 86 states and 6895 transitions. [2023-01-28 03:32:00,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 87 states, 86 states have (on average 80.17441860465117) internal successors, (6895), 86 states have internal predecessors, (6895), 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) [2023-01-28 03:32:00,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 87 states, 87 states have (on average 240.0) internal successors, (20880), 87 states have internal predecessors, (20880), 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) [2023-01-28 03:32:00,633 INFO L81 ComplementDD]: Finished complementDD. Result has 87 states, 87 states have (on average 240.0) internal successors, (20880), 87 states have internal predecessors, (20880), 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) [2023-01-28 03:32:00,633 INFO L175 Difference]: Start difference. First operand has 399 places, 7918 transitions, 138546 flow. Second operand 86 states and 6895 transitions. [2023-01-28 03:32:00,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 15790 transitions, 304628 flow [2023-01-28 03:37:10,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 15790 transitions, 300255 flow, removed 2035 selfloop flow, removed 11 redundant places. [2023-01-28 03:37:10,887 INFO L231 Difference]: Finished difference. Result has 531 places, 14680 transitions, 302938 flow [2023-01-28 03:37:10,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=136732, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7918, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5380, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=302938, PETRI_PLACES=531, PETRI_TRANSITIONS=14680} [2023-01-28 03:37:10,893 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 505 predicate places. [2023-01-28 03:37:10,893 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 14680 transitions, 302938 flow [2023-01-28 03:37:10,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 74.16666666666667) internal successors, (1780), 24 states have internal predecessors, (1780), 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) [2023-01-28 03:37:10,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:37:10,894 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:37:10,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 03:37:11,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:37:11,098 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:37:11,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:37:11,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1908179027, now seen corresponding path program 8 times [2023-01-28 03:37:11,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:37:11,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989147849] [2023-01-28 03:37:11,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:37:11,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:37:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:37:11,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:37:11,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:37:11,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989147849] [2023-01-28 03:37:11,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989147849] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:37:11,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118213937] [2023-01-28 03:37:11,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:37:11,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:37:11,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:37:11,766 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:37:11,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 03:37:11,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:37:11,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:37:11,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-28 03:37:11,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:37:12,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:37:12,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:37:12,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:37:12,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118213937] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:37:12,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:37:12,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2023-01-28 03:37:12,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275691462] [2023-01-28 03:37:12,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:37:12,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 03:37:12,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:37:12,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 03:37:12,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2023-01-28 03:37:12,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 240 [2023-01-28 03:37:12,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 14680 transitions, 302938 flow. Second operand has 23 states, 23 states have (on average 74.69565217391305) internal successors, (1718), 23 states have internal predecessors, (1718), 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) [2023-01-28 03:37:12,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:37:12,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 240 [2023-01-28 03:37:12,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-01-28 03:41:58,319 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 03:41:58,319 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 03:41:59,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-28 03:41:59,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-01-28 03:42:01,417 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 03:42:01,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 03:42:01,417 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-01-28 03:42:01,418 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 03:42:01,418 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 03:42:01,418 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 03:42:01,418 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2023-01-28 03:42:01,420 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 03:42:01,420 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 03:42:01,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 03:42:01 BasicIcfg [2023-01-28 03:42:01,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 03:42:01,422 INFO L158 Benchmark]: Toolchain (without parser) took 813885.66ms. Allocated memory was 375.4MB in the beginning and 6.1GB in the end (delta: 5.7GB). Free memory was 344.8MB in the beginning and 2.8GB in the end (delta: -2.4GB). Peak memory consumption was 5.0GB. Max. memory is 16.0GB. [2023-01-28 03:42:01,422 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 212.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 03:42:01,422 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.95ms. Allocated memory is still 375.4MB. Free memory was 344.5MB in the beginning and 333.2MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 03:42:01,423 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.30ms. Allocated memory is still 375.4MB. Free memory was 333.0MB in the beginning and 331.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 03:42:01,423 INFO L158 Benchmark]: Boogie Preprocessor took 16.07ms. Allocated memory is still 375.4MB. Free memory was 331.4MB in the beginning and 330.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 03:42:01,423 INFO L158 Benchmark]: RCFGBuilder took 454.97ms. Allocated memory is still 375.4MB. Free memory was 329.8MB in the beginning and 350.5MB in the end (delta: -20.7MB). Peak memory consumption was 24.2MB. Max. memory is 16.0GB. [2023-01-28 03:42:01,423 INFO L158 Benchmark]: TraceAbstraction took 813200.28ms. Allocated memory was 375.4MB in the beginning and 6.1GB in the end (delta: 5.7GB). Free memory was 349.9MB in the beginning and 2.8GB in the end (delta: -2.4GB). Peak memory consumption was 5.0GB. Max. memory is 16.0GB. [2023-01-28 03:42:01,424 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 212.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 186.95ms. Allocated memory is still 375.4MB. Free memory was 344.5MB in the beginning and 333.2MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 21.30ms. Allocated memory is still 375.4MB. Free memory was 333.0MB in the beginning and 331.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 16.07ms. Allocated memory is still 375.4MB. Free memory was 331.4MB in the beginning and 330.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 454.97ms. Allocated memory is still 375.4MB. Free memory was 329.8MB in the beginning and 350.5MB in the end (delta: -20.7MB). Peak memory consumption was 24.2MB. Max. memory is 16.0GB. * TraceAbstraction took 813200.28ms. Allocated memory was 375.4MB in the beginning and 6.1GB in the end (delta: 5.7GB). Free memory was 349.9MB in the beginning and 2.8GB in the end (delta: -2.4GB). Peak memory consumption was 5.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 108 PlacesBefore, 26 PlacesAfterwards, 114 TransitionsBefore, 19 TransitionsAfterwards, 3240 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 8 ConcurrentYvCompositions, 13 ChoiceCompositions, 113 TotalNumberOfCompositions, 3005 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2864, independent: 2855, independent conditional: 0, independent unconditional: 2855, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1659, independent: 1653, independent conditional: 0, independent unconditional: 1653, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2864, independent: 1202, independent conditional: 0, independent unconditional: 1202, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 1659, unknown conditional: 0, unknown unconditional: 1659] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 157 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 813.1s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 794.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3058 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3058 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 890 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8409 IncrementalHoareTripleChecker+Invalid, 9299 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 890 mSolverCounterUnsat, 0 mSDtfsCounter, 8409 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 779 GetRequests, 225 SyntacticMatches, 21 SemanticMatches, 533 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16958 ImplicationChecksByTransitivity, 22.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=302938occurred in iteration=10, InterpolantAutomatonStates: 377, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 395 NumberOfCodeBlocks, 395 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 9066 SizeOfPredicates, 86 NumberOfNonLiveVariables, 1316 ConjunctsInSsa, 155 ConjunctsInUnsatCore, 27 InterpolantComputations, 3 PerfectInterpolantSequences, 34/195 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 could not prove your program: Timeout Completed graceful shutdown