/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 AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:01:34,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:01:34,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:01:34,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 07:01:34,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:01:34,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:01:34,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:01:34,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:01:34,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:01:34,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:01:34,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:01:34,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:01:34,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:01:34,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:01:34,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:01:34,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:01:34,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 07:01:34,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:01:34,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:01:34,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:01:34,475 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 07:01:34,508 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:01:34,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:01:34,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:01:34,509 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:01:34,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:01:34,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:01:34,510 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:01:34,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:01:34,510 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:01:34,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:01:34,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:01:34,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:01:34,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:01:34,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:01:34,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:01:34,511 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:01:34,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:01:34,511 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:01:34,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:01:34,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:01:34,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:01:34,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:01:34,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:01:34,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:01:34,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:01:34,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:01:34,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:01:34,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:01:34,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:01:34,513 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:01:34,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:01:34,513 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:01:34,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:01:34,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:01:34,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:01:34,740 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:01:34,741 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:01:34,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 07:01:35,847 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:01:36,070 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:01:36,070 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 07:01:36,084 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d72ef36f3/8cc8f2ed2451401ea1da68e352039348/FLAGc3341ff76 [2023-01-28 07:01:36,096 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d72ef36f3/8cc8f2ed2451401ea1da68e352039348 [2023-01-28 07:01:36,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:01:36,099 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:01:36,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:01:36,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:01:36,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:01:36,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:01:36" (1/1) ... [2023-01-28 07:01:36,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b79cfe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:36, skipping insertion in model container [2023-01-28 07:01:36,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:01:36" (1/1) ... [2023-01-28 07:01:36,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:01:36,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:01:36,338 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-28 07:01:36,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:01:36,523 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:01:36,538 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-28 07:01:36,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:01:36,609 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:01:36,609 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:01:36,615 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:01:36,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:36 WrapperNode [2023-01-28 07:01:36,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:01:36,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:01:36,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:01:36,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:01:36,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:36" (1/1) ... [2023-01-28 07:01:36,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:36" (1/1) ... [2023-01-28 07:01:36,664 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-01-28 07:01:36,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:01:36,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:01:36,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:01:36,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:01:36,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:36" (1/1) ... [2023-01-28 07:01:36,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:36" (1/1) ... [2023-01-28 07:01:36,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:36" (1/1) ... [2023-01-28 07:01:36,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:36" (1/1) ... [2023-01-28 07:01:36,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:36" (1/1) ... [2023-01-28 07:01:36,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:36" (1/1) ... [2023-01-28 07:01:36,699 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:36" (1/1) ... [2023-01-28 07:01:36,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:36" (1/1) ... [2023-01-28 07:01:36,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:01:36,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:01:36,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:01:36,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:01:36,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:36" (1/1) ... [2023-01-28 07:01:36,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:01:36,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:01:36,745 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 07:01:36,754 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 07:01:36,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:01:36,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:01:36,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:01:36,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:01:36,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:01:36,780 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 07:01:36,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 07:01:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 07:01:36,781 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 07:01:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 07:01:36,781 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 07:01:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:01:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:01:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:01:36,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:01:36,783 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 07:01:36,941 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:01:36,943 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:01:37,081 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:01:37,089 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:01:37,089 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:01:37,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:01:37 BoogieIcfgContainer [2023-01-28 07:01:37,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:01:37,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:01:37,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:01:37,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:01:37,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:01:36" (1/3) ... [2023-01-28 07:01:37,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42dd3c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:01:37, skipping insertion in model container [2023-01-28 07:01:37,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:36" (2/3) ... [2023-01-28 07:01:37,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42dd3c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:01:37, skipping insertion in model container [2023-01-28 07:01:37,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:01:37" (3/3) ... [2023-01-28 07:01:37,098 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 07:01:37,112 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:01:37,112 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 07:01:37,112 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:01:37,163 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 07:01:37,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-01-28 07:01:37,238 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2023-01-28 07:01:37,238 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:01:37,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-01-28 07:01:37,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-01-28 07:01:37,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-01-28 07:01:37,250 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:01:37,257 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-01-28 07:01:37,259 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-01-28 07:01:37,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-01-28 07:01:37,278 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2023-01-28 07:01:37,278 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:01:37,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-01-28 07:01:37,280 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-28 07:01:39,200 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-01-28 07:01:39,201 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-01-28 07:01:39,227 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:01:39,234 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;@3a5221e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:01:39,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 07:01:39,247 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-01-28 07:01:39,247 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:01:39,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:39,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:39,249 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 07:01:39,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:39,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1940031658, now seen corresponding path program 1 times [2023-01-28 07:01:39,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:39,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85107004] [2023-01-28 07:01:39,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:39,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:39,787 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 07:01:39,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:39,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85107004] [2023-01-28 07:01:39,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85107004] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:39,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:39,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:01:39,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216490193] [2023-01-28 07:01:39,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:39,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:01:39,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:39,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:01:39,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:01:39,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 07:01:39,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 07:01:39,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:39,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 07:01:39,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:39,983 INFO L130 PetriNetUnfolder]: 418/718 cut-off events. [2023-01-28 07:01:39,983 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-01-28 07:01:39,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1461 conditions, 718 events. 418/718 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3409 event pairs, 155 based on Foata normal form. 31/748 useless extension candidates. Maximal degree in co-relation 1450. Up to 416 conditions per place. [2023-01-28 07:01:39,994 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-01-28 07:01:39,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 133 flow [2023-01-28 07:01:39,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:01:39,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:01:40,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-01-28 07:01:40,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2023-01-28 07:01:40,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-01-28 07:01:40,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-01-28 07:01:40,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:40,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-01-28 07:01:40,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 07:01:40,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 07:01:40,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 07:01:40,025 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 237 transitions. [2023-01-28 07:01:40,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 133 flow [2023-01-28 07:01:40,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:01:40,029 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-01-28 07:01:40,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-01-28 07:01:40,035 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-01-28 07:01:40,035 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-01-28 07:01:40,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 07:01:40,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:40,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:40,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:01:40,037 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 07:01:40,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:40,038 INFO L85 PathProgramCache]: Analyzing trace with hash 11438640, now seen corresponding path program 1 times [2023-01-28 07:01:40,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:40,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635670080] [2023-01-28 07:01:40,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:40,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:40,280 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 07:01:40,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:40,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635670080] [2023-01-28 07:01:40,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635670080] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:40,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:40,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:01:40,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741153802] [2023-01-28 07:01:40,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:40,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:01:40,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:40,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:01:40,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:01:40,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 07:01:40,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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 07:01:40,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:40,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 07:01:40,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:40,410 INFO L130 PetriNetUnfolder]: 382/647 cut-off events. [2023-01-28 07:01:40,410 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2023-01-28 07:01:40,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 647 events. 382/647 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2933 event pairs, 60 based on Foata normal form. 9/651 useless extension candidates. Maximal degree in co-relation 1760. Up to 345 conditions per place. [2023-01-28 07:01:40,415 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 30 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-01-28 07:01:40,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 212 flow [2023-01-28 07:01:40,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:01:40,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:01:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2023-01-28 07:01:40,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5514184397163121 [2023-01-28 07:01:40,423 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 311 transitions. [2023-01-28 07:01:40,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 311 transitions. [2023-01-28 07:01:40,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:40,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 311 transitions. [2023-01-28 07:01:40,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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 07:01:40,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 07:01:40,429 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 07:01:40,429 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 311 transitions. [2023-01-28 07:01:40,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 212 flow [2023-01-28 07:01:40,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:01:40,434 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 122 flow [2023-01-28 07:01:40,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-01-28 07:01:40,437 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-01-28 07:01:40,437 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 122 flow [2023-01-28 07:01:40,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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 07:01:40,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:40,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:40,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:01:40,438 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 07:01:40,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:40,439 INFO L85 PathProgramCache]: Analyzing trace with hash 354596265, now seen corresponding path program 1 times [2023-01-28 07:01:40,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:40,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776182011] [2023-01-28 07:01:40,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:40,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:40,612 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 07:01:40,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:40,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776182011] [2023-01-28 07:01:40,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776182011] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:40,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:40,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:01:40,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349100568] [2023-01-28 07:01:40,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:40,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:01:40,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:40,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:01:40,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:01:40,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-01-28 07:01:40,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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 07:01:40,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:40,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-01-28 07:01:40,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:40,767 INFO L130 PetriNetUnfolder]: 589/947 cut-off events. [2023-01-28 07:01:40,767 INFO L131 PetriNetUnfolder]: For 1075/1075 co-relation queries the response was YES. [2023-01-28 07:01:40,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2879 conditions, 947 events. 589/947 cut-off events. For 1075/1075 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4044 event pairs, 92 based on Foata normal form. 12/959 useless extension candidates. Maximal degree in co-relation 2864. Up to 267 conditions per place. [2023-01-28 07:01:40,776 INFO L137 encePairwiseOnDemand]: 133/141 looper letters, 39 selfloop transitions, 18 changer transitions 0/57 dead transitions. [2023-01-28 07:01:40,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 57 transitions, 384 flow [2023-01-28 07:01:40,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:01:40,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:01:40,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 381 transitions. [2023-01-28 07:01:40,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404255319148936 [2023-01-28 07:01:40,778 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 381 transitions. [2023-01-28 07:01:40,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 381 transitions. [2023-01-28 07:01:40,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:40,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 381 transitions. [2023-01-28 07:01:40,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 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 07:01:40,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 07:01:40,782 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 07:01:40,782 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 122 flow. Second operand 5 states and 381 transitions. [2023-01-28 07:01:40,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 57 transitions, 384 flow [2023-01-28 07:01:40,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 57 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:01:40,788 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 293 flow [2023-01-28 07:01:40,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-01-28 07:01:40,790 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-01-28 07:01:40,792 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 293 flow [2023-01-28 07:01:40,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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 07:01:40,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:40,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:40,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:01:40,794 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 07:01:40,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:40,794 INFO L85 PathProgramCache]: Analyzing trace with hash 380916753, now seen corresponding path program 1 times [2023-01-28 07:01:40,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:40,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107462334] [2023-01-28 07:01:40,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:40,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:40,989 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 07:01:40,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:40,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107462334] [2023-01-28 07:01:40,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107462334] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:40,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:40,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:01:40,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321543622] [2023-01-28 07:01:40,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:40,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:01:40,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:40,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:01:40,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:01:40,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 07:01:40,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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 07:01:40,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:40,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 07:01:40,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:41,107 INFO L130 PetriNetUnfolder]: 458/781 cut-off events. [2023-01-28 07:01:41,108 INFO L131 PetriNetUnfolder]: For 1800/1803 co-relation queries the response was YES. [2023-01-28 07:01:41,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3049 conditions, 781 events. 458/781 cut-off events. For 1800/1803 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3573 event pairs, 76 based on Foata normal form. 11/781 useless extension candidates. Maximal degree in co-relation 3029. Up to 371 conditions per place. [2023-01-28 07:01:41,114 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 41 selfloop transitions, 19 changer transitions 0/62 dead transitions. [2023-01-28 07:01:41,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 62 transitions, 540 flow [2023-01-28 07:01:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:01:41,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:01:41,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-01-28 07:01:41,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2023-01-28 07:01:41,116 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-01-28 07:01:41,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-01-28 07:01:41,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:41,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-01-28 07:01:41,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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 07:01:41,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 07:01:41,122 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 07:01:41,122 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 293 flow. Second operand 4 states and 315 transitions. [2023-01-28 07:01:41,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 62 transitions, 540 flow [2023-01-28 07:01:41,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 540 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:01:41,129 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 451 flow [2023-01-28 07:01:41,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=451, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-01-28 07:01:41,131 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2023-01-28 07:01:41,131 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 451 flow [2023-01-28 07:01:41,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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 07:01:41,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:41,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:41,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:01:41,133 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 07:01:41,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:41,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1892390759, now seen corresponding path program 1 times [2023-01-28 07:01:41,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:41,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553836489] [2023-01-28 07:01:41,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:41,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:41,303 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 07:01:41,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:41,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553836489] [2023-01-28 07:01:41,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553836489] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:41,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:41,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:01:41,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22989489] [2023-01-28 07:01:41,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:41,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:01:41,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:41,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:01:41,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:01:41,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-01-28 07:01:41,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 451 flow. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 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 07:01:41,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:41,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-01-28 07:01:41,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:41,431 INFO L130 PetriNetUnfolder]: 587/962 cut-off events. [2023-01-28 07:01:41,431 INFO L131 PetriNetUnfolder]: For 4219/4219 co-relation queries the response was YES. [2023-01-28 07:01:41,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4143 conditions, 962 events. 587/962 cut-off events. For 4219/4219 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4093 event pairs, 166 based on Foata normal form. 33/995 useless extension candidates. Maximal degree in co-relation 4118. Up to 383 conditions per place. [2023-01-28 07:01:41,437 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 32 selfloop transitions, 9 changer transitions 27/68 dead transitions. [2023-01-28 07:01:41,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 753 flow [2023-01-28 07:01:41,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:01:41,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:01:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 375 transitions. [2023-01-28 07:01:41,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2023-01-28 07:01:41,439 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 375 transitions. [2023-01-28 07:01:41,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 375 transitions. [2023-01-28 07:01:41,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:41,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 375 transitions. [2023-01-28 07:01:41,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 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 07:01:41,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 07:01:41,442 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 07:01:41,442 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 451 flow. Second operand 5 states and 375 transitions. [2023-01-28 07:01:41,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 753 flow [2023-01-28 07:01:41,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 747 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:01:41,452 INFO L231 Difference]: Finished difference. Result has 50 places, 29 transitions, 281 flow [2023-01-28 07:01:41,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=50, PETRI_TRANSITIONS=29} [2023-01-28 07:01:41,452 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-01-28 07:01:41,453 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 29 transitions, 281 flow [2023-01-28 07:01:41,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 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 07:01:41,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:41,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:41,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:01:41,453 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 07:01:41,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:41,454 INFO L85 PathProgramCache]: Analyzing trace with hash 989321049, now seen corresponding path program 1 times [2023-01-28 07:01:41,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:41,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664921957] [2023-01-28 07:01:41,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:41,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:41,581 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 07:01:41,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:41,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664921957] [2023-01-28 07:01:41,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664921957] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:41,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:41,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:01:41,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463079105] [2023-01-28 07:01:41,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:41,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:01:41,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:41,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:01:41,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:01:41,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 07:01:41,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 29 transitions, 281 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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 07:01:41,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:41,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 07:01:41,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:41,689 INFO L130 PetriNetUnfolder]: 250/447 cut-off events. [2023-01-28 07:01:41,690 INFO L131 PetriNetUnfolder]: For 2003/2003 co-relation queries the response was YES. [2023-01-28 07:01:41,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1868 conditions, 447 events. 250/447 cut-off events. For 2003/2003 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1874 event pairs, 60 based on Foata normal form. 16/463 useless extension candidates. Maximal degree in co-relation 1840. Up to 147 conditions per place. [2023-01-28 07:01:41,693 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 26 selfloop transitions, 12 changer transitions 14/54 dead transitions. [2023-01-28 07:01:41,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 529 flow [2023-01-28 07:01:41,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:01:41,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:01:41,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 461 transitions. [2023-01-28 07:01:41,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5449172576832151 [2023-01-28 07:01:41,695 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 461 transitions. [2023-01-28 07:01:41,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 461 transitions. [2023-01-28 07:01:41,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:41,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 461 transitions. [2023-01-28 07:01:41,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.83333333333333) internal successors, (461), 6 states have internal predecessors, (461), 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 07:01:41,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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 07:01:41,698 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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 07:01:41,698 INFO L175 Difference]: Start difference. First operand has 50 places, 29 transitions, 281 flow. Second operand 6 states and 461 transitions. [2023-01-28 07:01:41,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 529 flow [2023-01-28 07:01:41,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 423 flow, removed 16 selfloop flow, removed 10 redundant places. [2023-01-28 07:01:41,704 INFO L231 Difference]: Finished difference. Result has 49 places, 29 transitions, 260 flow [2023-01-28 07:01:41,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=49, PETRI_TRANSITIONS=29} [2023-01-28 07:01:41,707 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-01-28 07:01:41,707 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 29 transitions, 260 flow [2023-01-28 07:01:41,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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 07:01:41,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:41,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:41,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:01:41,708 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 07:01:41,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:41,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1882305127, now seen corresponding path program 1 times [2023-01-28 07:01:41,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:41,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512846706] [2023-01-28 07:01:41,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:41,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:41,899 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 07:01:41,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:41,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512846706] [2023-01-28 07:01:41,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512846706] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:41,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:41,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:01:41,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455641601] [2023-01-28 07:01:41,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:41,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:01:41,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:41,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:01:41,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:01:41,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-01-28 07:01:41,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 29 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:41,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:41,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-01-28 07:01:41,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:41,970 INFO L130 PetriNetUnfolder]: 121/254 cut-off events. [2023-01-28 07:01:41,970 INFO L131 PetriNetUnfolder]: For 1097/1102 co-relation queries the response was YES. [2023-01-28 07:01:41,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 961 conditions, 254 events. 121/254 cut-off events. For 1097/1102 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1092 event pairs, 25 based on Foata normal form. 15/265 useless extension candidates. Maximal degree in co-relation 936. Up to 137 conditions per place. [2023-01-28 07:01:41,972 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 30 selfloop transitions, 6 changer transitions 15/61 dead transitions. [2023-01-28 07:01:41,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 610 flow [2023-01-28 07:01:41,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:01:41,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:01:41,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 397 transitions. [2023-01-28 07:01:41,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5631205673758866 [2023-01-28 07:01:41,974 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 397 transitions. [2023-01-28 07:01:41,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 397 transitions. [2023-01-28 07:01:41,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:41,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 397 transitions. [2023-01-28 07:01:41,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 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 07:01:41,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 07:01:41,978 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 07:01:41,978 INFO L175 Difference]: Start difference. First operand has 49 places, 29 transitions, 260 flow. Second operand 5 states and 397 transitions. [2023-01-28 07:01:41,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 610 flow [2023-01-28 07:01:41,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 580 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-01-28 07:01:41,982 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 292 flow [2023-01-28 07:01:41,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2023-01-28 07:01:41,983 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2023-01-28 07:01:41,983 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 292 flow [2023-01-28 07:01:41,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:41,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:41,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:41,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:01:41,983 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 07:01:41,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:41,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1614134419, now seen corresponding path program 1 times [2023-01-28 07:01:41,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:41,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122629415] [2023-01-28 07:01:41,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:41,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:42,129 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 07:01:42,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:42,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122629415] [2023-01-28 07:01:42,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122629415] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:42,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:42,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:01:42,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226279546] [2023-01-28 07:01:42,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:42,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:01:42,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:42,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:01:42,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:01:42,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-01-28 07:01:42,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:42,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:42,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-01-28 07:01:42,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:42,219 INFO L130 PetriNetUnfolder]: 94/217 cut-off events. [2023-01-28 07:01:42,220 INFO L131 PetriNetUnfolder]: For 998/1034 co-relation queries the response was YES. [2023-01-28 07:01:42,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 217 events. 94/217 cut-off events. For 998/1034 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 965 event pairs, 5 based on Foata normal form. 34/248 useless extension candidates. Maximal degree in co-relation 973. Up to 98 conditions per place. [2023-01-28 07:01:42,221 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 35 selfloop transitions, 10 changer transitions 15/70 dead transitions. [2023-01-28 07:01:42,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 704 flow [2023-01-28 07:01:42,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:01:42,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:01:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 550 transitions. [2023-01-28 07:01:42,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5572441742654508 [2023-01-28 07:01:42,224 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 550 transitions. [2023-01-28 07:01:42,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 550 transitions. [2023-01-28 07:01:42,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:42,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 550 transitions. [2023-01-28 07:01:42,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 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 07:01:42,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 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 07:01:42,228 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 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 07:01:42,228 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 292 flow. Second operand 7 states and 550 transitions. [2023-01-28 07:01:42,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 704 flow [2023-01-28 07:01:42,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 70 transitions, 704 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:01:42,233 INFO L231 Difference]: Finished difference. Result has 60 places, 38 transitions, 359 flow [2023-01-28 07:01:42,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2023-01-28 07:01:42,235 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 33 predicate places. [2023-01-28 07:01:42,235 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 359 flow [2023-01-28 07:01:42,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:42,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:42,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:42,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 07:01:42,237 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 07:01:42,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:42,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1239293505, now seen corresponding path program 1 times [2023-01-28 07:01:42,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:42,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102919263] [2023-01-28 07:01:42,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:42,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:42,390 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 07:01:42,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:42,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102919263] [2023-01-28 07:01:42,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102919263] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:42,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:42,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:01:42,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153278711] [2023-01-28 07:01:42,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:42,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:01:42,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:42,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:01:42,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:01:42,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-01-28 07:01:42,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 38 transitions, 359 flow. Second operand has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 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 07:01:42,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:42,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-01-28 07:01:42,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:42,470 INFO L130 PetriNetUnfolder]: 71/172 cut-off events. [2023-01-28 07:01:42,470 INFO L131 PetriNetUnfolder]: For 1145/1201 co-relation queries the response was YES. [2023-01-28 07:01:42,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 946 conditions, 172 events. 71/172 cut-off events. For 1145/1201 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 729 event pairs, 2 based on Foata normal form. 41/210 useless extension candidates. Maximal degree in co-relation 916. Up to 71 conditions per place. [2023-01-28 07:01:42,472 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 24 selfloop transitions, 12 changer transitions 26/68 dead transitions. [2023-01-28 07:01:42,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 68 transitions, 749 flow [2023-01-28 07:01:42,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 07:01:42,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 07:01:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 692 transitions. [2023-01-28 07:01:42,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.545311268715524 [2023-01-28 07:01:42,474 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 692 transitions. [2023-01-28 07:01:42,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 692 transitions. [2023-01-28 07:01:42,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:42,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 692 transitions. [2023-01-28 07:01:42,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.88888888888889) internal successors, (692), 9 states have internal predecessors, (692), 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 07:01:42,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 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 07:01:42,478 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 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 07:01:42,478 INFO L175 Difference]: Start difference. First operand has 60 places, 38 transitions, 359 flow. Second operand 9 states and 692 transitions. [2023-01-28 07:01:42,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 68 transitions, 749 flow [2023-01-28 07:01:42,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 721 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-01-28 07:01:42,483 INFO L231 Difference]: Finished difference. Result has 65 places, 32 transitions, 304 flow [2023-01-28 07:01:42,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=304, PETRI_PLACES=65, PETRI_TRANSITIONS=32} [2023-01-28 07:01:42,484 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 38 predicate places. [2023-01-28 07:01:42,484 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 32 transitions, 304 flow [2023-01-28 07:01:42,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 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 07:01:42,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:42,484 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 07:01:42,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 07:01:42,484 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 07:01:42,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:42,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2006420856, now seen corresponding path program 1 times [2023-01-28 07:01:42,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:42,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136950135] [2023-01-28 07:01:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:42,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:42,604 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 07:01:42,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:42,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136950135] [2023-01-28 07:01:42,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136950135] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:42,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:42,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:01:42,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669414048] [2023-01-28 07:01:42,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:42,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:01:42,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:42,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:01:42,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:01:42,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 07:01:42,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 32 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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 07:01:42,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:42,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 07:01:42,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:42,640 INFO L130 PetriNetUnfolder]: 52/121 cut-off events. [2023-01-28 07:01:42,641 INFO L131 PetriNetUnfolder]: For 778/778 co-relation queries the response was YES. [2023-01-28 07:01:42,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 121 events. 52/121 cut-off events. For 778/778 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 382 event pairs, 9 based on Foata normal form. 1/122 useless extension candidates. Maximal degree in co-relation 712. Up to 87 conditions per place. [2023-01-28 07:01:42,641 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2023-01-28 07:01:42,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 39 transitions, 414 flow [2023-01-28 07:01:42,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:01:42,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:01:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 299 transitions. [2023-01-28 07:01:42,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301418439716312 [2023-01-28 07:01:42,643 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 299 transitions. [2023-01-28 07:01:42,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 299 transitions. [2023-01-28 07:01:42,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:42,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 299 transitions. [2023-01-28 07:01:42,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:42,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 07:01:42,645 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 07:01:42,645 INFO L175 Difference]: Start difference. First operand has 65 places, 32 transitions, 304 flow. Second operand 4 states and 299 transitions. [2023-01-28 07:01:42,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 39 transitions, 414 flow [2023-01-28 07:01:42,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 39 transitions, 327 flow, removed 12 selfloop flow, removed 12 redundant places. [2023-01-28 07:01:42,648 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2023-01-28 07:01:42,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2023-01-28 07:01:42,649 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2023-01-28 07:01:42,649 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2023-01-28 07:01:42,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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 07:01:42,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 07:01:42,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 07:01:42,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 07:01:42,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 07:01:42,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 07:01:42,652 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:42,655 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:01:42,655 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:01:42,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:01:42 BasicIcfg [2023-01-28 07:01:42,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:01:42,658 INFO L158 Benchmark]: Toolchain (without parser) took 6559.03ms. Allocated memory is still 562.0MB. Free memory was 523.1MB in the beginning and 410.6MB in the end (delta: 112.5MB). Peak memory consumption was 115.6MB. Max. memory is 16.0GB. [2023-01-28 07:01:42,658 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 362.8MB. Free memory is still 309.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:01:42,658 INFO L158 Benchmark]: CACSL2BoogieTranslator took 516.40ms. Allocated memory is still 562.0MB. Free memory was 523.1MB in the beginning and 502.8MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 07:01:42,658 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.08ms. Allocated memory is still 562.0MB. Free memory was 502.8MB in the beginning and 500.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:01:42,658 INFO L158 Benchmark]: Boogie Preprocessor took 35.18ms. Allocated memory is still 562.0MB. Free memory was 500.8MB in the beginning and 499.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:01:42,659 INFO L158 Benchmark]: RCFGBuilder took 388.97ms. Allocated memory is still 562.0MB. Free memory was 499.3MB in the beginning and 485.4MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 07:01:42,659 INFO L158 Benchmark]: TraceAbstraction took 5564.52ms. Allocated memory is still 562.0MB. Free memory was 484.7MB in the beginning and 410.6MB in the end (delta: 74.1MB). Peak memory consumption was 75.8MB. Max. memory is 16.0GB. [2023-01-28 07:01:42,660 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 362.8MB. Free memory is still 309.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 516.40ms. Allocated memory is still 562.0MB. Free memory was 523.1MB in the beginning and 502.8MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.08ms. Allocated memory is still 562.0MB. Free memory was 502.8MB in the beginning and 500.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.18ms. Allocated memory is still 562.0MB. Free memory was 500.8MB in the beginning and 499.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 388.97ms. Allocated memory is still 562.0MB. Free memory was 499.3MB in the beginning and 485.4MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 5564.52ms. Allocated memory is still 562.0MB. Free memory was 484.7MB in the beginning and 410.6MB in the end (delta: 74.1MB). Peak memory consumption was 75.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1050, independent: 973, independent conditional: 0, independent unconditional: 973, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 562, independent: 541, independent conditional: 0, independent unconditional: 541, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1050, independent: 432, independent conditional: 0, independent unconditional: 432, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 562, unknown conditional: 0, unknown unconditional: 562] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 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: 5.5s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 194 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 194 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 467 IncrementalHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 15 mSDtfsCounter, 467 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=451occurred in iteration=4, InterpolantAutomatonStates: 52, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 555 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 07:01:42,674 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 Received shutdown request...