/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 INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 05:36:41,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 05:36:41,823 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 05:36:41,827 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 05:36:41,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 05:36:41,842 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 05:36:41,842 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 05:36:41,843 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 05:36:41,843 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 05:36:41,843 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 05:36:41,844 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 05:36:41,844 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 05:36:41,844 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 05:36:41,844 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 05:36:41,845 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 05:36:41,845 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 05:36:41,845 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 05:36:41,845 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 05:36:41,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 05:36:41,846 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 05:36:41,846 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 05:36:41,846 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 05:36:41,846 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 05:36:41,846 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 05:36:41,847 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 05:36:41,847 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 05:36:41,847 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 05:36:41,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:36:41,847 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 05:36:41,848 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 05:36:41,848 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 05:36:41,848 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 05:36:41,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 05:36:41,848 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 05:36:41,848 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 05:36:41,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 05:36:42,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 05:36:42,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 05:36:42,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 05:36:42,115 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 05:36:42,115 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 05:36:42,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 05:36:43,177 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 05:36:43,352 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 05:36:43,352 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 05:36:43,362 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e890288a9/c85d562276a745e1a61051f1e4e866b8/FLAG0549b822a [2023-08-24 05:36:43,753 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e890288a9/c85d562276a745e1a61051f1e4e866b8 [2023-08-24 05:36:43,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 05:36:43,756 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 05:36:43,756 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 05:36:43,756 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 05:36:43,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 05:36:43,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:36:43" (1/1) ... [2023-08-24 05:36:43,773 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1566ea5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:43, skipping insertion in model container [2023-08-24 05:36:43,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:36:43" (1/1) ... [2023-08-24 05:36:43,808 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 05:36:43,913 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/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-24 05:36:44,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:36:44,010 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 05:36:44,021 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/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-24 05:36:44,038 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:36:44,039 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:36:44,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:36:44,093 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:36:44,093 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:36:44,098 INFO L206 MainTranslator]: Completed translation [2023-08-24 05:36:44,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:44 WrapperNode [2023-08-24 05:36:44,100 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 05:36:44,101 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 05:36:44,101 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 05:36:44,101 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 05:36:44,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:44" (1/1) ... [2023-08-24 05:36:44,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:44" (1/1) ... [2023-08-24 05:36:44,149 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-24 05:36:44,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 05:36:44,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 05:36:44,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 05:36:44,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 05:36:44,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:44" (1/1) ... [2023-08-24 05:36:44,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:44" (1/1) ... [2023-08-24 05:36:44,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:44" (1/1) ... [2023-08-24 05:36:44,171 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:44" (1/1) ... [2023-08-24 05:36:44,175 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:44" (1/1) ... [2023-08-24 05:36:44,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:44" (1/1) ... [2023-08-24 05:36:44,177 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:44" (1/1) ... [2023-08-24 05:36:44,178 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:44" (1/1) ... [2023-08-24 05:36:44,180 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 05:36:44,180 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 05:36:44,180 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 05:36:44,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 05:36:44,181 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:44" (1/1) ... [2023-08-24 05:36:44,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:36:44,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 05:36:44,238 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 05:36:44,270 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 05:36:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 05:36:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 05:36:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 05:36:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 05:36:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 05:36:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 05:36:44,298 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 05:36:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 05:36:44,299 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 05:36:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-24 05:36:44,299 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-24 05:36:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 05:36:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 05:36:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 05:36:44,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 05:36:44,300 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 05:36:44,381 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 05:36:44,382 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 05:36:44,562 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 05:36:44,567 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 05:36:44,567 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 05:36:44,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:36:44 BoogieIcfgContainer [2023-08-24 05:36:44,569 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 05:36:44,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 05:36:44,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 05:36:44,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 05:36:44,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 05:36:43" (1/3) ... [2023-08-24 05:36:44,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4362a523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:36:44, skipping insertion in model container [2023-08-24 05:36:44,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:44" (2/3) ... [2023-08-24 05:36:44,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4362a523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:36:44, skipping insertion in model container [2023-08-24 05:36:44,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:36:44" (3/3) ... [2023-08-24 05:36:44,575 INFO L112 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 05:36:44,591 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 05:36:44,592 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 05:36:44,594 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 05:36:44,665 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:36:44,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-08-24 05:36:44,747 INFO L124 PetriNetUnfolderBase]: 2/82 cut-off events. [2023-08-24 05:36:44,747 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:36:44,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-24 05:36:44,751 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-08-24 05:36:44,754 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-08-24 05:36:44,757 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:36:44,767 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-24 05:36:44,771 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-24 05:36:44,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-08-24 05:36:44,798 INFO L124 PetriNetUnfolderBase]: 1/70 cut-off events. [2023-08-24 05:36:44,799 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:36:44,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-24 05:36:44,801 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-24 05:36:46,270 INFO L134 LiptonReduction]: Checked pairs total: 2098 [2023-08-24 05:36:46,270 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-08-24 05:36:46,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 05:36:46,284 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;@7d858ee3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:36:46,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 05:36:46,288 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:36:46,288 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-24 05:36:46,288 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:36:46,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:46,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:46,289 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 05:36:46,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:46,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1331089238, now seen corresponding path program 1 times [2023-08-24 05:36:46,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:46,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448001234] [2023-08-24 05:36:46,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:46,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:46,684 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 05:36:46,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:46,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448001234] [2023-08-24 05:36:46,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448001234] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:46,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:46,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 05:36:46,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731666245] [2023-08-24 05:36:46,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:46,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:36:46,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:46,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:36:46,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:36:46,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-08-24 05:36:46,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:46,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:46,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-08-24 05:36:46,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:46,834 INFO L124 PetriNetUnfolderBase]: 551/886 cut-off events. [2023-08-24 05:36:46,834 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-08-24 05:36:46,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1827 conditions, 886 events. 551/886 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3724 event pairs, 188 based on Foata normal form. 42/928 useless extension candidates. Maximal degree in co-relation 1816. Up to 543 conditions per place. [2023-08-24 05:36:46,844 INFO L140 encePairwiseOnDemand]: 135/143 looper letters, 23 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2023-08-24 05:36:46,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 128 flow [2023-08-24 05:36:46,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:36:46,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:36:46,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-08-24 05:36:46,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571095571095571 [2023-08-24 05:36:46,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-08-24 05:36:46,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-08-24 05:36:46,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:46,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-08-24 05:36:46,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 05:36:46,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 05:36:46,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 05:36:46,872 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 239 transitions. [2023-08-24 05:36:46,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 128 flow [2023-08-24 05:36:46,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 124 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 05:36:46,877 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-08-24 05:36:46,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-08-24 05:36:46,883 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-24 05:36:46,883 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-08-24 05:36:46,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:46,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:46,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:46,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 05:36:46,885 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 05:36:46,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:46,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1685907729, now seen corresponding path program 1 times [2023-08-24 05:36:46,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:46,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220523766] [2023-08-24 05:36:46,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:46,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:47,061 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 05:36:47,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:47,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220523766] [2023-08-24 05:36:47,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220523766] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:47,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:47,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:36:47,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870679566] [2023-08-24 05:36:47,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:47,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:36:47,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:47,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:36:47,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:36:47,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-08-24 05:36:47,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:47,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:47,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-08-24 05:36:47,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:47,142 INFO L124 PetriNetUnfolderBase]: 505/816 cut-off events. [2023-08-24 05:36:47,142 INFO L125 PetriNetUnfolderBase]: For 260/260 co-relation queries the response was YES. [2023-08-24 05:36:47,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2214 conditions, 816 events. 505/816 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3324 event pairs, 121 based on Foata normal form. 12/828 useless extension candidates. Maximal degree in co-relation 2202. Up to 455 conditions per place. [2023-08-24 05:36:47,145 INFO L140 encePairwiseOnDemand]: 136/143 looper letters, 33 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2023-08-24 05:36:47,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 222 flow [2023-08-24 05:36:47,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:36:47,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:36:47,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2023-08-24 05:36:47,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.548951048951049 [2023-08-24 05:36:47,148 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 314 transitions. [2023-08-24 05:36:47,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 314 transitions. [2023-08-24 05:36:47,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:47,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 314 transitions. [2023-08-24 05:36:47,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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 05:36:47,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 05:36:47,150 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 05:36:47,150 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 314 transitions. [2023-08-24 05:36:47,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 222 flow [2023-08-24 05:36:47,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 05:36:47,153 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 122 flow [2023-08-24 05:36:47,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-08-24 05:36:47,154 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-08-24 05:36:47,154 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 122 flow [2023-08-24 05:36:47,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:47,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:47,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:47,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 05:36:47,154 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 05:36:47,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:47,155 INFO L85 PathProgramCache]: Analyzing trace with hash -723512641, now seen corresponding path program 1 times [2023-08-24 05:36:47,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:47,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597547789] [2023-08-24 05:36:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:47,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:47,250 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 05:36:47,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:47,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597547789] [2023-08-24 05:36:47,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597547789] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:47,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:47,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:36:47,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944555796] [2023-08-24 05:36:47,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:47,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:36:47,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:47,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:36:47,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:36:47,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-08-24 05:36:47,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:47,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:47,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-08-24 05:36:47,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:47,318 INFO L124 PetriNetUnfolderBase]: 483/782 cut-off events. [2023-08-24 05:36:47,318 INFO L125 PetriNetUnfolderBase]: For 657/657 co-relation queries the response was YES. [2023-08-24 05:36:47,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2356 conditions, 782 events. 483/782 cut-off events. For 657/657 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3126 event pairs, 123 based on Foata normal form. 8/790 useless extension candidates. Maximal degree in co-relation 2341. Up to 407 conditions per place. [2023-08-24 05:36:47,321 INFO L140 encePairwiseOnDemand]: 136/143 looper letters, 28 selfloop transitions, 10 changer transitions 0/38 dead transitions. [2023-08-24 05:36:47,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 244 flow [2023-08-24 05:36:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:36:47,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:36:47,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2023-08-24 05:36:47,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541958041958042 [2023-08-24 05:36:47,322 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 310 transitions. [2023-08-24 05:36:47,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 310 transitions. [2023-08-24 05:36:47,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:47,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 310 transitions. [2023-08-24 05:36:47,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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 05:36:47,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 05:36:47,325 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 05:36:47,325 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 122 flow. Second operand 4 states and 310 transitions. [2023-08-24 05:36:47,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 244 flow [2023-08-24 05:36:47,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:36:47,327 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 181 flow [2023-08-24 05:36:47,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2023-08-24 05:36:47,328 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-08-24 05:36:47,328 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 181 flow [2023-08-24 05:36:47,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:47,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:47,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:47,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 05:36:47,329 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 05:36:47,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:47,329 INFO L85 PathProgramCache]: Analyzing trace with hash -697334412, now seen corresponding path program 1 times [2023-08-24 05:36:47,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:47,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893590128] [2023-08-24 05:36:47,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:47,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:47,389 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 05:36:47,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:47,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893590128] [2023-08-24 05:36:47,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893590128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:47,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:47,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:36:47,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439948641] [2023-08-24 05:36:47,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:47,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:36:47,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:47,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:36:47,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:36:47,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 143 [2023-08-24 05:36:47,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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 05:36:47,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:47,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 143 [2023-08-24 05:36:47,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:47,510 INFO L124 PetriNetUnfolderBase]: 524/902 cut-off events. [2023-08-24 05:36:47,510 INFO L125 PetriNetUnfolderBase]: For 1605/1605 co-relation queries the response was YES. [2023-08-24 05:36:47,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2955 conditions, 902 events. 524/902 cut-off events. For 1605/1605 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4260 event pairs, 255 based on Foata normal form. 44/935 useless extension candidates. Maximal degree in co-relation 2936. Up to 467 conditions per place. [2023-08-24 05:36:47,514 INFO L140 encePairwiseOnDemand]: 139/143 looper letters, 27 selfloop transitions, 5 changer transitions 14/49 dead transitions. [2023-08-24 05:36:47,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 373 flow [2023-08-24 05:36:47,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:36:47,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:36:47,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 399 transitions. [2023-08-24 05:36:47,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558041958041958 [2023-08-24 05:36:47,516 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 399 transitions. [2023-08-24 05:36:47,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 399 transitions. [2023-08-24 05:36:47,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:47,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 399 transitions. [2023-08-24 05:36:47,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 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 05:36:47,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 05:36:47,518 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 05:36:47,519 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 181 flow. Second operand 5 states and 399 transitions. [2023-08-24 05:36:47,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 373 flow [2023-08-24 05:36:47,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:36:47,523 INFO L231 Difference]: Finished difference. Result has 43 places, 27 transitions, 200 flow [2023-08-24 05:36:47,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=43, PETRI_TRANSITIONS=27} [2023-08-24 05:36:47,524 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-08-24 05:36:47,524 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 27 transitions, 200 flow [2023-08-24 05:36:47,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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 05:36:47,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:47,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:47,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 05:36:47,525 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 05:36:47,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:47,525 INFO L85 PathProgramCache]: Analyzing trace with hash 542011608, now seen corresponding path program 1 times [2023-08-24 05:36:47,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:47,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53884040] [2023-08-24 05:36:47,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:47,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:47,591 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 05:36:47,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:47,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53884040] [2023-08-24 05:36:47,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53884040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:47,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:47,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:36:47,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839900982] [2023-08-24 05:36:47,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:47,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:36:47,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:47,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:36:47,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:36:47,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-08-24 05:36:47,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 27 transitions, 200 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 05:36:47,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:47,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-08-24 05:36:47,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:47,643 INFO L124 PetriNetUnfolderBase]: 198/382 cut-off events. [2023-08-24 05:36:47,644 INFO L125 PetriNetUnfolderBase]: For 1081/1106 co-relation queries the response was YES. [2023-08-24 05:36:47,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1356 conditions, 382 events. 198/382 cut-off events. For 1081/1106 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1720 event pairs, 58 based on Foata normal form. 28/388 useless extension candidates. Maximal degree in co-relation 1334. Up to 286 conditions per place. [2023-08-24 05:36:47,646 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 26 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-08-24 05:36:47,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 40 transitions, 333 flow [2023-08-24 05:36:47,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:36:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:36:47,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-08-24 05:36:47,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2023-08-24 05:36:47,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-08-24 05:36:47,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-08-24 05:36:47,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:47,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-08-24 05:36:47,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 05:36:47,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 05:36:47,649 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 05:36:47,649 INFO L175 Difference]: Start difference. First operand has 43 places, 27 transitions, 200 flow. Second operand 3 states and 247 transitions. [2023-08-24 05:36:47,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 40 transitions, 333 flow [2023-08-24 05:36:47,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 315 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-24 05:36:47,652 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 212 flow [2023-08-24 05:36:47,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2023-08-24 05:36:47,652 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-08-24 05:36:47,652 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 212 flow [2023-08-24 05:36:47,653 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 05:36:47,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:47,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:47,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 05:36:47,653 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 05:36:47,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:47,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1800098462, now seen corresponding path program 1 times [2023-08-24 05:36:47,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:47,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998878417] [2023-08-24 05:36:47,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:47,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:47,721 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 05:36:47,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:47,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998878417] [2023-08-24 05:36:47,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998878417] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:47,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:47,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:36:47,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475734609] [2023-08-24 05:36:47,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:47,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:36:47,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:47,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:36:47,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:36:47,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-08-24 05:36:47,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 212 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 05:36:47,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:47,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-08-24 05:36:47,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:47,771 INFO L124 PetriNetUnfolderBase]: 127/266 cut-off events. [2023-08-24 05:36:47,771 INFO L125 PetriNetUnfolderBase]: For 557/605 co-relation queries the response was YES. [2023-08-24 05:36:47,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1067 conditions, 266 events. 127/266 cut-off events. For 557/605 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1115 event pairs, 28 based on Foata normal form. 57/308 useless extension candidates. Maximal degree in co-relation 1045. Up to 116 conditions per place. [2023-08-24 05:36:47,773 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 33 selfloop transitions, 7 changer transitions 0/50 dead transitions. [2023-08-24 05:36:47,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 50 transitions, 415 flow [2023-08-24 05:36:47,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:36:47,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:36:47,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-08-24 05:36:47,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5751748251748252 [2023-08-24 05:36:47,774 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-08-24 05:36:47,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-08-24 05:36:47,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:47,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-08-24 05:36:47,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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 05:36:47,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 05:36:47,777 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 05:36:47,777 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 212 flow. Second operand 4 states and 329 transitions. [2023-08-24 05:36:47,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 50 transitions, 415 flow [2023-08-24 05:36:47,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 50 transitions, 411 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:36:47,779 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 248 flow [2023-08-24 05:36:47,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2023-08-24 05:36:47,780 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-08-24 05:36:47,780 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 248 flow [2023-08-24 05:36:47,780 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 05:36:47,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:47,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:47,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 05:36:47,780 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 05:36:47,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:47,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1056893756, now seen corresponding path program 1 times [2023-08-24 05:36:47,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:47,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105341843] [2023-08-24 05:36:47,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:47,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:47,850 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 05:36:47,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:47,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105341843] [2023-08-24 05:36:47,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105341843] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:47,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:47,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 05:36:47,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828766081] [2023-08-24 05:36:47,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:47,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 05:36:47,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:47,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 05:36:47,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-24 05:36:47,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-08-24 05:36:47,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 248 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 05:36:47,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:47,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-08-24 05:36:47,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:47,912 INFO L124 PetriNetUnfolderBase]: 111/228 cut-off events. [2023-08-24 05:36:47,912 INFO L125 PetriNetUnfolderBase]: For 730/807 co-relation queries the response was YES. [2023-08-24 05:36:47,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 228 events. 111/228 cut-off events. For 730/807 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 942 event pairs, 24 based on Foata normal form. 60/274 useless extension candidates. Maximal degree in co-relation 982. Up to 92 conditions per place. [2023-08-24 05:36:47,914 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 29 selfloop transitions, 10 changer transitions 1/50 dead transitions. [2023-08-24 05:36:47,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 439 flow [2023-08-24 05:36:47,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:36:47,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:36:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 403 transitions. [2023-08-24 05:36:47,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5636363636363636 [2023-08-24 05:36:47,915 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 403 transitions. [2023-08-24 05:36:47,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 403 transitions. [2023-08-24 05:36:47,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:47,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 403 transitions. [2023-08-24 05:36:47,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 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 05:36:47,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 05:36:47,917 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 05:36:47,917 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 248 flow. Second operand 5 states and 403 transitions. [2023-08-24 05:36:47,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 50 transitions, 439 flow [2023-08-24 05:36:47,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 403 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-24 05:36:47,922 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 249 flow [2023-08-24 05:36:47,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2023-08-24 05:36:47,927 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-08-24 05:36:47,927 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 249 flow [2023-08-24 05:36:47,927 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 05:36:47,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:47,928 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 05:36:47,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 05:36:47,928 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 05:36:47,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:47,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1744447918, now seen corresponding path program 1 times [2023-08-24 05:36:47,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:47,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029954742] [2023-08-24 05:36:47,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:47,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:48,037 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 05:36:48,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:48,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029954742] [2023-08-24 05:36:48,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029954742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:48,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:48,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 05:36:48,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968589135] [2023-08-24 05:36:48,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:48,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 05:36:48,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:48,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 05:36:48,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 05:36:48,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-08-24 05:36:48,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 249 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 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 05:36:48,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:48,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-08-24 05:36:48,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:48,132 INFO L124 PetriNetUnfolderBase]: 206/393 cut-off events. [2023-08-24 05:36:48,132 INFO L125 PetriNetUnfolderBase]: For 1184/1184 co-relation queries the response was YES. [2023-08-24 05:36:48,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1784 conditions, 393 events. 206/393 cut-off events. For 1184/1184 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1613 event pairs, 33 based on Foata normal form. 1/394 useless extension candidates. Maximal degree in co-relation 1761. Up to 151 conditions per place. [2023-08-24 05:36:48,135 INFO L140 encePairwiseOnDemand]: 136/143 looper letters, 37 selfloop transitions, 13 changer transitions 30/80 dead transitions. [2023-08-24 05:36:48,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 80 transitions, 736 flow [2023-08-24 05:36:48,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 05:36:48,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 05:36:48,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 464 transitions. [2023-08-24 05:36:48,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407925407925408 [2023-08-24 05:36:48,136 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 464 transitions. [2023-08-24 05:36:48,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 464 transitions. [2023-08-24 05:36:48,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:48,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 464 transitions. [2023-08-24 05:36:48,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.33333333333333) internal successors, (464), 6 states have internal predecessors, (464), 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 05:36:48,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 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 05:36:48,139 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 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 05:36:48,139 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 249 flow. Second operand 6 states and 464 transitions. [2023-08-24 05:36:48,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 80 transitions, 736 flow [2023-08-24 05:36:48,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 80 transitions, 650 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-08-24 05:36:48,143 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 281 flow [2023-08-24 05:36:48,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=281, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2023-08-24 05:36:48,145 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-08-24 05:36:48,145 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 281 flow [2023-08-24 05:36:48,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 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 05:36:48,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:48,145 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 05:36:48,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 05:36:48,145 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:36:48,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:48,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1255203528, now seen corresponding path program 2 times [2023-08-24 05:36:48,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:48,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508196575] [2023-08-24 05:36:48,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:48,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:36:48,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:48,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508196575] [2023-08-24 05:36:48,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508196575] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:48,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:48,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:36:48,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106779142] [2023-08-24 05:36:48,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:48,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:36:48,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:48,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:36:48,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:36:48,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-08-24 05:36:48,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 281 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 05:36:48,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:48,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-08-24 05:36:48,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:48,336 INFO L124 PetriNetUnfolderBase]: 134/307 cut-off events. [2023-08-24 05:36:48,336 INFO L125 PetriNetUnfolderBase]: For 1362/1367 co-relation queries the response was YES. [2023-08-24 05:36:48,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 307 events. 134/307 cut-off events. For 1362/1367 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1449 event pairs, 20 based on Foata normal form. 3/309 useless extension candidates. Maximal degree in co-relation 1419. Up to 155 conditions per place. [2023-08-24 05:36:48,338 INFO L140 encePairwiseOnDemand]: 140/143 looper letters, 21 selfloop transitions, 1 changer transitions 36/60 dead transitions. [2023-08-24 05:36:48,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 564 flow [2023-08-24 05:36:48,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:36:48,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:36:48,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 326 transitions. [2023-08-24 05:36:48,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5699300699300699 [2023-08-24 05:36:48,339 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 326 transitions. [2023-08-24 05:36:48,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 326 transitions. [2023-08-24 05:36:48,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:48,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 326 transitions. [2023-08-24 05:36:48,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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 05:36:48,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 05:36:48,341 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 05:36:48,341 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 281 flow. Second operand 4 states and 326 transitions. [2023-08-24 05:36:48,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 564 flow [2023-08-24 05:36:48,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 542 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-24 05:36:48,344 INFO L231 Difference]: Finished difference. Result has 49 places, 23 transitions, 149 flow [2023-08-24 05:36:48,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=49, PETRI_TRANSITIONS=23} [2023-08-24 05:36:48,345 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-08-24 05:36:48,345 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 23 transitions, 149 flow [2023-08-24 05:36:48,345 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 05:36:48,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:48,345 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 05:36:48,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 05:36:48,345 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:36:48,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:48,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1441889324, now seen corresponding path program 3 times [2023-08-24 05:36:48,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:48,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937199685] [2023-08-24 05:36:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:48,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:48,422 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 05:36:48,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:48,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937199685] [2023-08-24 05:36:48,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937199685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:48,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:48,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:36:48,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371405906] [2023-08-24 05:36:48,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:48,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 05:36:48,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:48,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 05:36:48,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 05:36:48,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-08-24 05:36:48,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 23 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 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 05:36:48,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:48,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-08-24 05:36:48,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:48,450 INFO L124 PetriNetUnfolderBase]: 30/78 cut-off events. [2023-08-24 05:36:48,450 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2023-08-24 05:36:48,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 78 events. 30/78 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 184 event pairs, 7 based on Foata normal form. 1/79 useless extension candidates. Maximal degree in co-relation 347. Up to 47 conditions per place. [2023-08-24 05:36:48,450 INFO L140 encePairwiseOnDemand]: 140/143 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-08-24 05:36:48,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 29 transitions, 236 flow [2023-08-24 05:36:48,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:36:48,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:36:48,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 298 transitions. [2023-08-24 05:36:48,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209790209790209 [2023-08-24 05:36:48,451 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 298 transitions. [2023-08-24 05:36:48,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 298 transitions. [2023-08-24 05:36:48,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:48,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 298 transitions. [2023-08-24 05:36:48,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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 05:36:48,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 05:36:48,453 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 05:36:48,453 INFO L175 Difference]: Start difference. First operand has 49 places, 23 transitions, 149 flow. Second operand 4 states and 298 transitions. [2023-08-24 05:36:48,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 29 transitions, 236 flow [2023-08-24 05:36:48,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 196 flow, removed 3 selfloop flow, removed 12 redundant places. [2023-08-24 05:36:48,454 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-08-24 05:36:48,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-08-24 05:36:48,455 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-08-24 05:36:48,455 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-08-24 05:36:48,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 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 05:36:48,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 05:36:48,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 05:36:48,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 05:36:48,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 05:36:48,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 05:36:48,457 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:48,459 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 05:36:48,459 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 05:36:48,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 05:36:48 BasicIcfg [2023-08-24 05:36:48,462 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 05:36:48,462 INFO L158 Benchmark]: Toolchain (without parser) took 4706.52ms. Allocated memory was 379.6MB in the beginning and 520.1MB in the end (delta: 140.5MB). Free memory was 337.0MB in the beginning and 400.4MB in the end (delta: -63.4MB). Peak memory consumption was 79.9MB. Max. memory is 16.0GB. [2023-08-24 05:36:48,462 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 379.6MB. Free memory is still 357.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 05:36:48,462 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.24ms. Allocated memory is still 379.6MB. Free memory was 337.0MB in the beginning and 316.8MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-24 05:36:48,462 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.83ms. Allocated memory is still 379.6MB. Free memory was 315.7MB in the beginning and 314.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 05:36:48,463 INFO L158 Benchmark]: Boogie Preprocessor took 29.89ms. Allocated memory is still 379.6MB. Free memory was 314.7MB in the beginning and 312.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 05:36:48,463 INFO L158 Benchmark]: RCFGBuilder took 388.61ms. Allocated memory is still 379.6MB. Free memory was 312.6MB in the beginning and 296.9MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 05:36:48,463 INFO L158 Benchmark]: TraceAbstraction took 3891.35ms. Allocated memory was 379.6MB in the beginning and 520.1MB in the end (delta: 140.5MB). Free memory was 296.9MB in the beginning and 400.4MB in the end (delta: -103.6MB). Peak memory consumption was 40.1MB. Max. memory is 16.0GB. [2023-08-24 05:36:48,464 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 379.6MB. Free memory is still 357.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 344.24ms. Allocated memory is still 379.6MB. Free memory was 337.0MB in the beginning and 316.8MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.83ms. Allocated memory is still 379.6MB. Free memory was 315.7MB in the beginning and 314.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.89ms. Allocated memory is still 379.6MB. Free memory was 314.7MB in the beginning and 312.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 388.61ms. Allocated memory is still 379.6MB. Free memory was 312.6MB in the beginning and 296.9MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3891.35ms. Allocated memory was 379.6MB in the beginning and 520.1MB in the end (delta: 140.5MB). Free memory was 296.9MB in the beginning and 400.4MB in the end (delta: -103.6MB). Peak memory consumption was 40.1MB. 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: 1.5s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 58 TotalNumberOfCompositions, 2098 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1215, independent: 1131, independent conditional: 0, independent unconditional: 1131, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 587, independent: 565, independent conditional: 0, independent unconditional: 565, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1215, independent: 566, independent conditional: 0, independent unconditional: 566, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 587, unknown conditional: 0, unknown unconditional: 587] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 41, Positive conditional cache size: 0, Positive unconditional cache size: 41, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.8s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 132 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 132 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 448 IncrementalHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 20 mSDtfsCounter, 448 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=281occurred in iteration=8, InterpolantAutomatonStates: 42, 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, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 565 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 05:36:48,480 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...