/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.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:50:59,587 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:50:59,673 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 11:50:59,678 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:50:59,679 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:50:59,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:50:59,710 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:50:59,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:50:59,711 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:50:59,715 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:50:59,715 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:50:59,715 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:50:59,716 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:50:59,717 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:50:59,717 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:50:59,717 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:50:59,718 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:50:59,718 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:50:59,718 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:50:59,718 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:50:59,718 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:50:59,719 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:50:59,719 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:50:59,720 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:50:59,720 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:50:59,720 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:50:59,721 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:50:59,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:50:59,721 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:50:59,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:50:59,722 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:50:59,722 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:50:59,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:50:59,723 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:50:59,723 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:50:59,723 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:51:00,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:51:00,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:51:00,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:51:00,041 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:51:00,041 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:51:00,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-08-24 11:51:01,258 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:51:01,496 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:51:01,496 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-08-24 11:51:01,511 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/404d0469f/b5f7593c62464ce486ea3a130a0032a7/FLAGf3af73d12 [2023-08-24 11:51:01,524 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/404d0469f/b5f7593c62464ce486ea3a130a0032a7 [2023-08-24 11:51:01,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:51:01,527 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:51:01,528 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:51:01,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:51:01,531 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:51:01,531 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:51:01" (1/1) ... [2023-08-24 11:51:01,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da010fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:01, skipping insertion in model container [2023-08-24 11:51:01,532 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:51:01" (1/1) ... [2023-08-24 11:51:01,569 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:51:01,695 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2023-08-24 11:51:01,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:51:01,897 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:51:01,912 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2023-08-24 11:51:01,929 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 11:51:01,931 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 11:51:01,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:51:01,976 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:51:01,976 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:51:01,982 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:51:01,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:01 WrapperNode [2023-08-24 11:51:01,983 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:51:01,984 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:51:01,984 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:51:01,984 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:51:01,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:01" (1/1) ... [2023-08-24 11:51:02,027 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:01" (1/1) ... [2023-08-24 11:51:02,051 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-24 11:51:02,051 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:51:02,052 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:51:02,052 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:51:02,052 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:51:02,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:01" (1/1) ... [2023-08-24 11:51:02,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:01" (1/1) ... [2023-08-24 11:51:02,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:01" (1/1) ... [2023-08-24 11:51:02,073 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:01" (1/1) ... [2023-08-24 11:51:02,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:01" (1/1) ... [2023-08-24 11:51:02,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:01" (1/1) ... [2023-08-24 11:51:02,090 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:01" (1/1) ... [2023-08-24 11:51:02,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:01" (1/1) ... [2023-08-24 11:51:02,097 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:51:02,098 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:51:02,098 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:51:02,098 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:51:02,099 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:01" (1/1) ... [2023-08-24 11:51:02,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:51:02,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:51:02,133 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) [2023-08-24 11:51:02,159 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 [2023-08-24 11:51:02,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:51:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 11:51:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:51:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:51:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:51:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 11:51:02,174 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 11:51:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 11:51:02,174 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 11:51:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-24 11:51:02,174 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-24 11:51:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:51:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 11:51:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:51:02,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:51:02,177 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 11:51:02,326 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:51:02,328 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:51:02,501 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:51:02,507 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:51:02,507 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 11:51:02,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:51:02 BoogieIcfgContainer [2023-08-24 11:51:02,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:51:02,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:51:02,513 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:51:02,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:51:02,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:51:01" (1/3) ... [2023-08-24 11:51:02,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1badcdb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:51:02, skipping insertion in model container [2023-08-24 11:51:02,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:01" (2/3) ... [2023-08-24 11:51:02,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1badcdb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:51:02, skipping insertion in model container [2023-08-24 11:51:02,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:51:02" (3/3) ... [2023-08-24 11:51:02,520 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-08-24 11:51:02,534 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:51:02,535 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 11:51:02,535 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:51:02,591 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 11:51:02,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-08-24 11:51:02,674 INFO L124 PetriNetUnfolderBase]: 2/82 cut-off events. [2023-08-24 11:51:02,675 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:51:02,681 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 48 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. [2023-08-24 11:51:02,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-08-24 11:51:02,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-08-24 11:51:02,710 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:51:02,717 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-24 11:51:02,720 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-24 11:51:02,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-08-24 11:51:02,738 INFO L124 PetriNetUnfolderBase]: 1/70 cut-off events. [2023-08-24 11:51:02,738 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:51:02,739 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 39 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. [2023-08-24 11:51:02,740 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-24 11:51:04,685 INFO L134 LiptonReduction]: Checked pairs total: 2258 [2023-08-24 11:51:04,685 INFO L136 LiptonReduction]: Total number of compositions: 59 [2023-08-24 11:51:04,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:51:04,703 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;@4995682a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:51:04,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 11:51:04,708 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:51:04,709 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-24 11:51:04,709 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:51:04,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:04,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:04,710 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)] === [2023-08-24 11:51:04,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:04,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1507537944, now seen corresponding path program 1 times [2023-08-24 11:51:04,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:04,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007040106] [2023-08-24 11:51:04,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:04,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:05,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:51:05,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:05,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007040106] [2023-08-24 11:51:05,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007040106] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:05,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:05,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:51:05,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089738178] [2023-08-24 11:51:05,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:05,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:51:05,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:05,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:51:05,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:51:05,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 144 [2023-08-24 11:51:05,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2023-08-24 11:51:05,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:05,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 144 [2023-08-24 11:51:05,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:05,324 INFO L124 PetriNetUnfolderBase]: 176/299 cut-off events. [2023-08-24 11:51:05,324 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-24 11:51:05,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 299 events. 176/299 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1131 event pairs, 86 based on Foata normal form. 18/313 useless extension candidates. Maximal degree in co-relation 610. Up to 154 conditions per place. [2023-08-24 11:51:05,329 INFO L140 encePairwiseOnDemand]: 140/144 looper letters, 18 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-08-24 11:51:05,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 93 flow [2023-08-24 11:51:05,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:51:05,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:51:05,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-08-24 11:51:05,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5810185185185185 [2023-08-24 11:51:05,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-08-24 11:51:05,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-08-24 11:51:05,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:05,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-08-24 11:51:05,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2023-08-24 11:51:05,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-08-24 11:51:05,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-08-24 11:51:05,356 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 251 transitions. [2023-08-24 11:51:05,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 93 flow [2023-08-24 11:51:05,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 90 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 11:51:05,360 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2023-08-24 11:51:05,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-08-24 11:51:05,364 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-08-24 11:51:05,365 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2023-08-24 11:51:05,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2023-08-24 11:51:05,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:05,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:05,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:51:05,366 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)] === [2023-08-24 11:51:05,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:05,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1340026379, now seen corresponding path program 1 times [2023-08-24 11:51:05,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:05,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676112974] [2023-08-24 11:51:05,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:05,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:05,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:51:05,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:05,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676112974] [2023-08-24 11:51:05,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676112974] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:05,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:05,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:51:05,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938739260] [2023-08-24 11:51:05,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:05,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:51:05,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:05,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:51:05,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:51:05,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 144 [2023-08-24 11:51:05,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2023-08-24 11:51:05,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:05,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 144 [2023-08-24 11:51:05,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:05,619 INFO L124 PetriNetUnfolderBase]: 295/506 cut-off events. [2023-08-24 11:51:05,620 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-24 11:51:05,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 506 events. 295/506 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2207 event pairs, 141 based on Foata normal form. 24/529 useless extension candidates. Maximal degree in co-relation 1114. Up to 301 conditions per place. [2023-08-24 11:51:05,628 INFO L140 encePairwiseOnDemand]: 141/144 looper letters, 20 selfloop transitions, 2 changer transitions 2/25 dead transitions. [2023-08-24 11:51:05,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 115 flow [2023-08-24 11:51:05,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:51:05,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:51:05,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-24 11:51:05,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5648148148148148 [2023-08-24 11:51:05,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-24 11:51:05,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-24 11:51:05,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:05,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-24 11:51:05,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2023-08-24 11:51:05,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-08-24 11:51:05,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-08-24 11:51:05,642 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 3 states and 244 transitions. [2023-08-24 11:51:05,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 115 flow [2023-08-24 11:51:05,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 109 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:51:05,645 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 52 flow [2023-08-24 11:51:05,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-08-24 11:51:05,647 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-24 11:51:05,648 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 52 flow [2023-08-24 11:51:05,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2023-08-24 11:51:05,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:05,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:05,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:51:05,656 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)] === [2023-08-24 11:51:05,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:05,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1408854657, now seen corresponding path program 1 times [2023-08-24 11:51:05,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:05,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928093891] [2023-08-24 11:51:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:05,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:05,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:51:05,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:05,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928093891] [2023-08-24 11:51:05,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928093891] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:05,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:05,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:51:05,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973992638] [2023-08-24 11:51:05,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:05,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:51:05,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:05,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:51:05,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:51:05,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 144 [2023-08-24 11:51:05,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2023-08-24 11:51:05,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:05,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 144 [2023-08-24 11:51:05,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:05,854 INFO L124 PetriNetUnfolderBase]: 58/119 cut-off events. [2023-08-24 11:51:05,854 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-24 11:51:05,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 119 events. 58/119 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 338 event pairs, 18 based on Foata normal form. 6/122 useless extension candidates. Maximal degree in co-relation 282. Up to 97 conditions per place. [2023-08-24 11:51:05,855 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 18 selfloop transitions, 4 changer transitions 0/25 dead transitions. [2023-08-24 11:51:05,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 120 flow [2023-08-24 11:51:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:51:05,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:51:05,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-08-24 11:51:05,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5671296296296297 [2023-08-24 11:51:05,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-08-24 11:51:05,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-08-24 11:51:05,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:05,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-08-24 11:51:05,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2023-08-24 11:51:05,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-08-24 11:51:05,859 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-08-24 11:51:05,860 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 52 flow. Second operand 3 states and 245 transitions. [2023-08-24 11:51:05,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 120 flow [2023-08-24 11:51:05,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 113 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:51:05,861 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 74 flow [2023-08-24 11:51:05,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-08-24 11:51:05,862 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-08-24 11:51:05,862 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 74 flow [2023-08-24 11:51:05,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2023-08-24 11:51:05,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:05,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:05,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 11:51:05,863 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)] === [2023-08-24 11:51:05,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:05,863 INFO L85 PathProgramCache]: Analyzing trace with hash -542242550, now seen corresponding path program 1 times [2023-08-24 11:51:05,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:05,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641393401] [2023-08-24 11:51:05,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:05,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:05,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:51:05,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:05,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641393401] [2023-08-24 11:51:05,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641393401] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:05,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:05,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:51:05,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704393737] [2023-08-24 11:51:05,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:05,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:51:05,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:05,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:51:05,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:51:05,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 144 [2023-08-24 11:51:05,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 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) [2023-08-24 11:51:05,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:05,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 144 [2023-08-24 11:51:05,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:06,080 INFO L124 PetriNetUnfolderBase]: 211/383 cut-off events. [2023-08-24 11:51:06,081 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2023-08-24 11:51:06,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 383 events. 211/383 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1529 event pairs, 29 based on Foata normal form. 18/401 useless extension candidates. Maximal degree in co-relation 1088. Up to 187 conditions per place. [2023-08-24 11:51:06,083 INFO L140 encePairwiseOnDemand]: 138/144 looper letters, 33 selfloop transitions, 5 changer transitions 1/39 dead transitions. [2023-08-24 11:51:06,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 221 flow [2023-08-24 11:51:06,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 11:51:06,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 11:51:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 377 transitions. [2023-08-24 11:51:06,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236111111111111 [2023-08-24 11:51:06,085 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 377 transitions. [2023-08-24 11:51:06,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 377 transitions. [2023-08-24 11:51:06,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:06,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 377 transitions. [2023-08-24 11:51:06,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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) [2023-08-24 11:51:06,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:06,088 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:06,088 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 74 flow. Second operand 5 states and 377 transitions. [2023-08-24 11:51:06,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 221 flow [2023-08-24 11:51:06,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 39 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 11:51:06,090 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 102 flow [2023-08-24 11:51:06,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=102, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2023-08-24 11:51:06,090 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-08-24 11:51:06,091 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 102 flow [2023-08-24 11:51:06,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 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) [2023-08-24 11:51:06,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:06,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:06,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 11:51:06,091 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)] === [2023-08-24 11:51:06,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:06,092 INFO L85 PathProgramCache]: Analyzing trace with hash -574194560, now seen corresponding path program 2 times [2023-08-24 11:51:06,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:06,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784152973] [2023-08-24 11:51:06,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:06,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:51:06,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:06,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784152973] [2023-08-24 11:51:06,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784152973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:06,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:06,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:51:06,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454498300] [2023-08-24 11:51:06,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:06,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:51:06,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:06,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:51:06,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:51:06,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 144 [2023-08-24 11:51:06,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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) [2023-08-24 11:51:06,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:06,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 144 [2023-08-24 11:51:06,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:06,241 INFO L124 PetriNetUnfolderBase]: 64/165 cut-off events. [2023-08-24 11:51:06,241 INFO L125 PetriNetUnfolderBase]: For 106/120 co-relation queries the response was YES. [2023-08-24 11:51:06,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 165 events. 64/165 cut-off events. For 106/120 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 689 event pairs, 12 based on Foata normal form. 34/193 useless extension candidates. Maximal degree in co-relation 493. Up to 84 conditions per place. [2023-08-24 11:51:06,242 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 20 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2023-08-24 11:51:06,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 194 flow [2023-08-24 11:51:06,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:51:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:51:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 324 transitions. [2023-08-24 11:51:06,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2023-08-24 11:51:06,244 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 324 transitions. [2023-08-24 11:51:06,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 324 transitions. [2023-08-24 11:51:06,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:06,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 324 transitions. [2023-08-24 11:51:06,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2023-08-24 11:51:06,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:06,246 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:06,247 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 102 flow. Second operand 4 states and 324 transitions. [2023-08-24 11:51:06,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 194 flow [2023-08-24 11:51:06,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 189 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:51:06,250 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 139 flow [2023-08-24 11:51:06,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-08-24 11:51:06,252 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-08-24 11:51:06,253 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 139 flow [2023-08-24 11:51:06,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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) [2023-08-24 11:51:06,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:06,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:06,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 11:51:06,254 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)] === [2023-08-24 11:51:06,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:06,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1984961520, now seen corresponding path program 1 times [2023-08-24 11:51:06,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:06,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635053430] [2023-08-24 11:51:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:06,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:06,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:51:06,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:06,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635053430] [2023-08-24 11:51:06,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635053430] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:06,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:06,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:51:06,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452409294] [2023-08-24 11:51:06,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:06,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:51:06,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:06,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:51:06,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:51:06,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 144 [2023-08-24 11:51:06,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 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) [2023-08-24 11:51:06,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:06,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 144 [2023-08-24 11:51:06,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:06,455 INFO L124 PetriNetUnfolderBase]: 50/130 cut-off events. [2023-08-24 11:51:06,456 INFO L125 PetriNetUnfolderBase]: For 192/204 co-relation queries the response was YES. [2023-08-24 11:51:06,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 130 events. 50/130 cut-off events. For 192/204 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 513 event pairs, 8 based on Foata normal form. 25/151 useless extension candidates. Maximal degree in co-relation 465. Up to 61 conditions per place. [2023-08-24 11:51:06,457 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 16 selfloop transitions, 10 changer transitions 1/33 dead transitions. [2023-08-24 11:51:06,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 33 transitions, 217 flow [2023-08-24 11:51:06,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 11:51:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 11:51:06,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 398 transitions. [2023-08-24 11:51:06,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5527777777777778 [2023-08-24 11:51:06,459 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 398 transitions. [2023-08-24 11:51:06,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 398 transitions. [2023-08-24 11:51:06,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:06,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 398 transitions. [2023-08-24 11:51:06,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 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) [2023-08-24 11:51:06,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:06,462 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:06,462 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 139 flow. Second operand 5 states and 398 transitions. [2023-08-24 11:51:06,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 33 transitions, 217 flow [2023-08-24 11:51:06,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 33 transitions, 191 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-24 11:51:06,464 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 144 flow [2023-08-24 11:51:06,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2023-08-24 11:51:06,465 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-08-24 11:51:06,465 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 144 flow [2023-08-24 11:51:06,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 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) [2023-08-24 11:51:06,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:06,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:06,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 11:51:06,466 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)] === [2023-08-24 11:51:06,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:06,466 INFO L85 PathProgramCache]: Analyzing trace with hash -236864701, now seen corresponding path program 1 times [2023-08-24 11:51:06,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:06,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536032706] [2023-08-24 11:51:06,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:06,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:06,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:51:06,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:06,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536032706] [2023-08-24 11:51:06,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536032706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:06,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:06,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:51:06,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046490360] [2023-08-24 11:51:06,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:06,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:51:06,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:06,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:51:06,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:51:06,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 144 [2023-08-24 11:51:06,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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) [2023-08-24 11:51:06,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:06,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 144 [2023-08-24 11:51:06,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:06,644 INFO L124 PetriNetUnfolderBase]: 104/237 cut-off events. [2023-08-24 11:51:06,644 INFO L125 PetriNetUnfolderBase]: For 451/455 co-relation queries the response was YES. [2023-08-24 11:51:06,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 237 events. 104/237 cut-off events. For 451/455 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1003 event pairs, 35 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 884. Up to 141 conditions per place. [2023-08-24 11:51:06,646 INFO L140 encePairwiseOnDemand]: 140/144 looper letters, 28 selfloop transitions, 2 changer transitions 18/50 dead transitions. [2023-08-24 11:51:06,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 404 flow [2023-08-24 11:51:06,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 11:51:06,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 11:51:06,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 391 transitions. [2023-08-24 11:51:06,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5430555555555555 [2023-08-24 11:51:06,648 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 391 transitions. [2023-08-24 11:51:06,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 391 transitions. [2023-08-24 11:51:06,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:06,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 391 transitions. [2023-08-24 11:51:06,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:06,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:06,650 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:06,650 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 144 flow. Second operand 5 states and 391 transitions. [2023-08-24 11:51:06,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 404 flow [2023-08-24 11:51:06,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 50 transitions, 342 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-24 11:51:06,654 INFO L231 Difference]: Finished difference. Result has 40 places, 26 transitions, 128 flow [2023-08-24 11:51:06,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=40, PETRI_TRANSITIONS=26} [2023-08-24 11:51:06,655 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-08-24 11:51:06,655 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 26 transitions, 128 flow [2023-08-24 11:51:06,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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) [2023-08-24 11:51:06,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:06,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:06,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 11:51:06,655 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)] === [2023-08-24 11:51:06,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:06,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1242204355, now seen corresponding path program 2 times [2023-08-24 11:51:06,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:06,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917214352] [2023-08-24 11:51:06,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:06,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:51:06,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:06,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917214352] [2023-08-24 11:51:06,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917214352] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:06,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:06,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:51:06,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723879876] [2023-08-24 11:51:06,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:06,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:51:06,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:06,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:51:06,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:51:06,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 144 [2023-08-24 11:51:06,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 26 transitions, 128 flow. Second operand has 4 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) [2023-08-24 11:51:06,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:06,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 144 [2023-08-24 11:51:06,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:06,787 INFO L124 PetriNetUnfolderBase]: 78/184 cut-off events. [2023-08-24 11:51:06,788 INFO L125 PetriNetUnfolderBase]: For 258/260 co-relation queries the response was YES. [2023-08-24 11:51:06,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 184 events. 78/184 cut-off events. For 258/260 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 770 event pairs, 7 based on Foata normal form. 1/184 useless extension candidates. Maximal degree in co-relation 648. Up to 72 conditions per place. [2023-08-24 11:51:06,789 INFO L140 encePairwiseOnDemand]: 141/144 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2023-08-24 11:51:06,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 313 flow [2023-08-24 11:51:06,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:51:06,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:51:06,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 322 transitions. [2023-08-24 11:51:06,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5590277777777778 [2023-08-24 11:51:06,790 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 322 transitions. [2023-08-24 11:51:06,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 322 transitions. [2023-08-24 11:51:06,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:06,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 322 transitions. [2023-08-24 11:51:06,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 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) [2023-08-24 11:51:06,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:06,793 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:06,793 INFO L175 Difference]: Start difference. First operand has 40 places, 26 transitions, 128 flow. Second operand 4 states and 322 transitions. [2023-08-24 11:51:06,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 313 flow [2023-08-24 11:51:06,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 305 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:51:06,795 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-08-24 11:51:06,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-08-24 11:51:06,797 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-08-24 11:51:06,797 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-08-24 11:51:06,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2023-08-24 11:51:06,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 11:51:06,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 11:51:06,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 11:51:06,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 11:51:06,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 11:51:06,801 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2023-08-24 11:51:06,805 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:51:06,805 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:51:06,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:51:06 BasicIcfg [2023-08-24 11:51:06,813 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:51:06,813 INFO L158 Benchmark]: Toolchain (without parser) took 5286.06ms. Allocated memory was 388.0MB in the beginning and 501.2MB in the end (delta: 113.2MB). Free memory was 362.8MB in the beginning and 342.9MB in the end (delta: 19.9MB). Peak memory consumption was 133.6MB. Max. memory is 16.0GB. [2023-08-24 11:51:06,813 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 388.0MB. Free memory is still 364.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:51:06,814 INFO L158 Benchmark]: CACSL2BoogieTranslator took 455.35ms. Allocated memory is still 388.0MB. Free memory was 362.3MB in the beginning and 342.4MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 11:51:06,814 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.01ms. Allocated memory is still 388.0MB. Free memory was 341.8MB in the beginning and 340.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:51:06,814 INFO L158 Benchmark]: Boogie Preprocessor took 45.53ms. Allocated memory is still 388.0MB. Free memory was 340.3MB in the beginning and 338.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:51:06,814 INFO L158 Benchmark]: RCFGBuilder took 413.01ms. Allocated memory is still 388.0MB. Free memory was 338.7MB in the beginning and 324.3MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 11:51:06,814 INFO L158 Benchmark]: TraceAbstraction took 4299.59ms. Allocated memory was 388.0MB in the beginning and 501.2MB in the end (delta: 113.2MB). Free memory was 323.8MB in the beginning and 342.9MB in the end (delta: -19.1MB). Peak memory consumption was 95.9MB. Max. memory is 16.0GB. [2023-08-24 11:51:06,816 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 388.0MB. Free memory is still 364.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 455.35ms. Allocated memory is still 388.0MB. Free memory was 362.3MB in the beginning and 342.4MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 67.01ms. Allocated memory is still 388.0MB. Free memory was 341.8MB in the beginning and 340.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 45.53ms. Allocated memory is still 388.0MB. Free memory was 340.3MB in the beginning and 338.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 413.01ms. Allocated memory is still 388.0MB. Free memory was 338.7MB in the beginning and 324.3MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4299.59ms. Allocated memory was 388.0MB in the beginning and 501.2MB in the end (delta: 113.2MB). Free memory was 323.8MB in the beginning and 342.9MB in the end (delta: -19.1MB). Peak memory consumption was 95.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 59 TotalNumberOfCompositions, 2258 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1233, independent: 1135, independent conditional: 0, independent unconditional: 1135, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 592, independent: 566, independent conditional: 0, independent unconditional: 566, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1233, independent: 569, independent conditional: 0, independent unconditional: 569, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 592, unknown conditional: 0, unknown unconditional: 592] , Statistics on independence cache: Total cache size (in pairs): 59, Positive cache size: 50, Positive conditional cache size: 0, Positive unconditional cache size: 50, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, 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: 4.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 313 IncrementalHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 6 mSDtfsCounter, 313 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=6, InterpolantAutomatonStates: 32, 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, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 263 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2023-08-24 11:51:06,833 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...