/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/safe012_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 05:34:57,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 05:34:57,386 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 05:34:57,390 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 05:34:57,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 05:34:57,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 05:34:57,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 05:34:57,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 05:34:57,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 05:34:57,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 05:34:57,417 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 05:34:57,417 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 05:34:57,417 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 05:34:57,418 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 05:34:57,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 05:34:57,418 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 05:34:57,419 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 05:34:57,419 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 05:34:57,419 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 05:34:57,419 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 05:34:57,419 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 05:34:57,420 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 05:34:57,420 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 05:34:57,420 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 05:34:57,421 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 05:34:57,421 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 05:34:57,421 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 05:34:57,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:34:57,421 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 05:34:57,421 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 05:34:57,422 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 05:34:57,422 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 05:34:57,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 05:34:57,422 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 05:34:57,422 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 05:34:57,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 05:34:57,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 05:34:57,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 05:34:57,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 05:34:57,670 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 05:34:57,670 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 05:34:57,673 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.i [2023-08-24 05:34:58,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 05:34:59,040 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 05:34:59,040 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.i [2023-08-24 05:34:59,107 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5619a9b7d/6bdda6eaa0b646dba73f5228098f84ae/FLAGca2cdd527 [2023-08-24 05:34:59,118 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5619a9b7d/6bdda6eaa0b646dba73f5228098f84ae [2023-08-24 05:34:59,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 05:34:59,122 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 05:34:59,134 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 05:34:59,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 05:34:59,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 05:34:59,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:34:59" (1/1) ... [2023-08-24 05:34:59,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@278f75e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:59, skipping insertion in model container [2023-08-24 05:34:59,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:34:59" (1/1) ... [2023-08-24 05:34:59,202 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 05:34:59,405 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/safe012_tso.i[945,958] [2023-08-24 05:34:59,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:34:59,614 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 05:34:59,641 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/safe012_tso.i[945,958] [2023-08-24 05:34:59,660 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:34:59,661 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:34:59,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:34:59,733 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:34:59,733 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:34:59,738 INFO L206 MainTranslator]: Completed translation [2023-08-24 05:34:59,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:59 WrapperNode [2023-08-24 05:34:59,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 05:34:59,749 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 05:34:59,749 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 05:34:59,749 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 05:34:59,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:59" (1/1) ... [2023-08-24 05:34:59,777 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:59" (1/1) ... [2023-08-24 05:34:59,791 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-08-24 05:34:59,791 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 05:34:59,792 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 05:34:59,792 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 05:34:59,792 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 05:34:59,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:59" (1/1) ... [2023-08-24 05:34:59,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:59" (1/1) ... [2023-08-24 05:34:59,815 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:59" (1/1) ... [2023-08-24 05:34:59,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:59" (1/1) ... [2023-08-24 05:34:59,819 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:59" (1/1) ... [2023-08-24 05:34:59,820 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:59" (1/1) ... [2023-08-24 05:34:59,821 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:59" (1/1) ... [2023-08-24 05:34:59,822 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:59" (1/1) ... [2023-08-24 05:34:59,823 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 05:34:59,824 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 05:34:59,824 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 05:34:59,824 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 05:34:59,825 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:59" (1/1) ... [2023-08-24 05:34:59,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:34:59,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 05:34:59,862 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 05:34:59,867 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 05:34:59,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 05:34:59,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 05:34:59,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 05:34:59,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 05:34:59,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 05:34:59,896 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 05:34:59,896 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 05:34:59,896 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 05:34:59,896 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 05:34:59,896 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-24 05:34:59,896 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-24 05:34:59,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 05:34:59,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 05:34:59,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 05:34:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 05:34:59,899 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 05:34:59,978 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 05:34:59,979 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 05:35:00,086 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 05:35:00,090 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 05:35:00,091 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 05:35:00,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:35:00 BoogieIcfgContainer [2023-08-24 05:35:00,092 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 05:35:00,093 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 05:35:00,094 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 05:35:00,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 05:35:00,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 05:34:59" (1/3) ... [2023-08-24 05:35:00,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e46a521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:35:00, skipping insertion in model container [2023-08-24 05:35:00,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:59" (2/3) ... [2023-08-24 05:35:00,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e46a521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:35:00, skipping insertion in model container [2023-08-24 05:35:00,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:35:00" (3/3) ... [2023-08-24 05:35:00,097 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_tso.i [2023-08-24 05:35:00,109 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 05:35:00,110 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 05:35:00,110 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 05:35:00,143 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:35:00,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 187 flow [2023-08-24 05:35:00,209 INFO L124 PetriNetUnfolderBase]: 2/83 cut-off events. [2023-08-24 05:35:00,209 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:35:00,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-24 05:35:00,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 86 transitions, 187 flow [2023-08-24 05:35:00,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 71 transitions, 151 flow [2023-08-24 05:35:00,216 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:35:00,221 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 71 transitions, 151 flow [2023-08-24 05:35:00,223 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 71 transitions, 151 flow [2023-08-24 05:35:00,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 71 transitions, 151 flow [2023-08-24 05:35:00,236 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2023-08-24 05:35:00,236 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:35:00,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-24 05:35:00,237 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-24 05:35:01,728 INFO L134 LiptonReduction]: Checked pairs total: 1982 [2023-08-24 05:35:01,728 INFO L136 LiptonReduction]: Total number of compositions: 59 [2023-08-24 05:35:01,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 05:35:01,743 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;@5e717422, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:35:01,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 05:35:01,746 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:35:01,746 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-08-24 05:35:01,746 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:35:01,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:01,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:01,747 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 05:35:01,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:01,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1603823166, now seen corresponding path program 1 times [2023-08-24 05:35:01,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:01,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408528992] [2023-08-24 05:35:01,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:01,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:02,125 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 05:35:02,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:02,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408528992] [2023-08-24 05:35:02,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408528992] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:02,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:02,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 05:35:02,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5930656] [2023-08-24 05:35:02,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:02,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:35:02,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:02,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:35:02,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:35:02,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 145 [2023-08-24 05:35:02,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 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 05:35:02,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:02,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 145 [2023-08-24 05:35:02,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:02,259 INFO L124 PetriNetUnfolderBase]: 143/265 cut-off events. [2023-08-24 05:35:02,259 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 05:35:02,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 265 events. 143/265 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1095 event pairs, 53 based on Foata normal form. 9/270 useless extension candidates. Maximal degree in co-relation 525. Up to 154 conditions per place. [2023-08-24 05:35:02,263 INFO L140 encePairwiseOnDemand]: 141/145 looper letters, 17 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-08-24 05:35:02,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 91 flow [2023-08-24 05:35:02,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:35:02,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:35:02,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-08-24 05:35:02,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5816091954022988 [2023-08-24 05:35:02,273 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-08-24 05:35:02,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-08-24 05:35:02,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:02,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-08-24 05:35:02,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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 05:35:02,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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 05:35:02,282 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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 05:35:02,283 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 253 transitions. [2023-08-24 05:35:02,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 91 flow [2023-08-24 05:35:02,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 88 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 05:35:02,301 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2023-08-24 05:35:02,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-08-24 05:35:02,305 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-08-24 05:35:02,305 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2023-08-24 05:35:02,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 05:35:02,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:02,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:02,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 05:35:02,306 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 05:35:02,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:02,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1821089988, now seen corresponding path program 1 times [2023-08-24 05:35:02,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:02,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106238292] [2023-08-24 05:35:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:02,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:02,396 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 05:35:02,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:02,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106238292] [2023-08-24 05:35:02,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106238292] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:02,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:02,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 05:35:02,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562101335] [2023-08-24 05:35:02,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:02,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:35:02,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:02,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:35:02,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:35:02,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 145 [2023-08-24 05:35:02,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 05:35:02,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:02,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 145 [2023-08-24 05:35:02,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:02,440 INFO L124 PetriNetUnfolderBase]: 130/252 cut-off events. [2023-08-24 05:35:02,440 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-08-24 05:35:02,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 252 events. 130/252 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1108 event pairs, 26 based on Foata normal form. 6/254 useless extension candidates. Maximal degree in co-relation 541. Up to 175 conditions per place. [2023-08-24 05:35:02,442 INFO L140 encePairwiseOnDemand]: 142/145 looper letters, 21 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-08-24 05:35:02,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 119 flow [2023-08-24 05:35:02,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:35:02,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:35:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2023-08-24 05:35:02,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2023-08-24 05:35:02,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 255 transitions. [2023-08-24 05:35:02,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 255 transitions. [2023-08-24 05:35:02,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:02,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 255 transitions. [2023-08-24 05:35:02,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 05:35:02,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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 05:35:02,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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 05:35:02,448 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 3 states and 255 transitions. [2023-08-24 05:35:02,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 119 flow [2023-08-24 05:35:02,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 26 transitions, 113 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 05:35:02,449 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 52 flow [2023-08-24 05:35:02,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-08-24 05:35:02,450 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-24 05:35:02,450 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 52 flow [2023-08-24 05:35:02,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 05:35:02,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:02,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:02,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 05:35:02,450 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 05:35:02,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:02,451 INFO L85 PathProgramCache]: Analyzing trace with hash -619561353, now seen corresponding path program 1 times [2023-08-24 05:35:02,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:02,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538496854] [2023-08-24 05:35:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:02,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:02,550 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 05:35:02,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:02,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538496854] [2023-08-24 05:35:02,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538496854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:02,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:02,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:35:02,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561326052] [2023-08-24 05:35:02,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:02,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:35:02,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:02,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:35:02,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:35:02,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 145 [2023-08-24 05:35:02,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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 05:35:02,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:02,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 145 [2023-08-24 05:35:02,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:02,649 INFO L124 PetriNetUnfolderBase]: 288/466 cut-off events. [2023-08-24 05:35:02,650 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2023-08-24 05:35:02,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 466 events. 288/466 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1861 event pairs, 41 based on Foata normal form. 9/473 useless extension candidates. Maximal degree in co-relation 1098. Up to 213 conditions per place. [2023-08-24 05:35:02,656 INFO L140 encePairwiseOnDemand]: 139/145 looper letters, 32 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2023-08-24 05:35:02,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 40 transitions, 191 flow [2023-08-24 05:35:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:35:02,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:35:02,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 396 transitions. [2023-08-24 05:35:02,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462068965517242 [2023-08-24 05:35:02,662 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 396 transitions. [2023-08-24 05:35:02,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 396 transitions. [2023-08-24 05:35:02,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:02,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 396 transitions. [2023-08-24 05:35:02,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 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 05:35:02,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 05:35:02,667 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 05:35:02,667 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 52 flow. Second operand 5 states and 396 transitions. [2023-08-24 05:35:02,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 40 transitions, 191 flow [2023-08-24 05:35:02,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 183 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 05:35:02,669 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 97 flow [2023-08-24 05:35:02,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2023-08-24 05:35:02,670 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-08-24 05:35:02,673 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 97 flow [2023-08-24 05:35:02,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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 05:35:02,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:02,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:02,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 05:35:02,674 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 05:35:02,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:02,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1457009079, now seen corresponding path program 2 times [2023-08-24 05:35:02,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:02,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638087170] [2023-08-24 05:35:02,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:02,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:02,807 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 05:35:02,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:02,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638087170] [2023-08-24 05:35:02,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638087170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:02,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:02,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:35:02,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840136051] [2023-08-24 05:35:02,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:02,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 05:35:02,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:02,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 05:35:02,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 05:35:02,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 145 [2023-08-24 05:35:02,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 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 05:35:02,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:02,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 145 [2023-08-24 05:35:02,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:02,880 INFO L124 PetriNetUnfolderBase]: 315/524 cut-off events. [2023-08-24 05:35:02,880 INFO L125 PetriNetUnfolderBase]: For 505/505 co-relation queries the response was YES. [2023-08-24 05:35:02,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1481 conditions, 524 events. 315/524 cut-off events. For 505/505 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2140 event pairs, 116 based on Foata normal form. 27/547 useless extension candidates. Maximal degree in co-relation 1466. Up to 203 conditions per place. [2023-08-24 05:35:02,883 INFO L140 encePairwiseOnDemand]: 141/145 looper letters, 20 selfloop transitions, 3 changer transitions 10/34 dead transitions. [2023-08-24 05:35:02,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 198 flow [2023-08-24 05:35:02,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:35:02,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:35:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2023-08-24 05:35:02,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5413793103448276 [2023-08-24 05:35:02,884 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 314 transitions. [2023-08-24 05:35:02,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 314 transitions. [2023-08-24 05:35:02,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:02,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 314 transitions. [2023-08-24 05:35:02,885 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 05:35:02,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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 05:35:02,886 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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 05:35:02,886 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 97 flow. Second operand 4 states and 314 transitions. [2023-08-24 05:35:02,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 198 flow [2023-08-24 05:35:02,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:35:02,890 INFO L231 Difference]: Finished difference. Result has 37 places, 17 transitions, 80 flow [2023-08-24 05:35:02,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=37, PETRI_TRANSITIONS=17} [2023-08-24 05:35:02,891 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-08-24 05:35:02,891 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 17 transitions, 80 flow [2023-08-24 05:35:02,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 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 05:35:02,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:02,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:02,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 05:35:02,893 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 05:35:02,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:02,894 INFO L85 PathProgramCache]: Analyzing trace with hash -2026567007, now seen corresponding path program 1 times [2023-08-24 05:35:02,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:02,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544640861] [2023-08-24 05:35:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:02,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:03,004 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 05:35:03,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:03,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544640861] [2023-08-24 05:35:03,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544640861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:03,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:03,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:35:03,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747837401] [2023-08-24 05:35:03,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:03,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:35:03,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:03,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:35:03,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:35:03,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 145 [2023-08-24 05:35:03,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 17 transitions, 80 flow. Second operand has 4 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 05:35:03,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:03,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 145 [2023-08-24 05:35:03,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:03,057 INFO L124 PetriNetUnfolderBase]: 133/248 cut-off events. [2023-08-24 05:35:03,057 INFO L125 PetriNetUnfolderBase]: For 838/859 co-relation queries the response was YES. [2023-08-24 05:35:03,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 248 events. 133/248 cut-off events. For 838/859 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 973 event pairs, 57 based on Foata normal form. 19/257 useless extension candidates. Maximal degree in co-relation 716. Up to 85 conditions per place. [2023-08-24 05:35:03,058 INFO L140 encePairwiseOnDemand]: 141/145 looper letters, 17 selfloop transitions, 3 changer transitions 7/29 dead transitions. [2023-08-24 05:35:03,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 177 flow [2023-08-24 05:35:03,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:35:03,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:35:03,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-08-24 05:35:03,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5672413793103448 [2023-08-24 05:35:03,059 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-08-24 05:35:03,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-08-24 05:35:03,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:03,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-08-24 05:35:03,060 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 05:35:03,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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 05:35:03,061 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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 05:35:03,062 INFO L175 Difference]: Start difference. First operand has 37 places, 17 transitions, 80 flow. Second operand 4 states and 329 transitions. [2023-08-24 05:35:03,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 177 flow [2023-08-24 05:35:03,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 133 flow, removed 8 selfloop flow, removed 10 redundant places. [2023-08-24 05:35:03,065 INFO L231 Difference]: Finished difference. Result has 31 places, 17 transitions, 64 flow [2023-08-24 05:35:03,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=31, PETRI_TRANSITIONS=17} [2023-08-24 05:35:03,066 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-08-24 05:35:03,067 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 17 transitions, 64 flow [2023-08-24 05:35:03,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 05:35:03,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:03,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:03,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 05:35:03,068 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 05:35:03,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:03,068 INFO L85 PathProgramCache]: Analyzing trace with hash 231085386, now seen corresponding path program 1 times [2023-08-24 05:35:03,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:03,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462638164] [2023-08-24 05:35:03,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:03,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:03,191 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 05:35:03,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:03,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462638164] [2023-08-24 05:35:03,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462638164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:03,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:03,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:35:03,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458045715] [2023-08-24 05:35:03,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:03,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:35:03,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:03,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:35:03,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:35:03,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 145 [2023-08-24 05:35:03,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 17 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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 05:35:03,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:03,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 145 [2023-08-24 05:35:03,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:03,240 INFO L124 PetriNetUnfolderBase]: 56/125 cut-off events. [2023-08-24 05:35:03,241 INFO L125 PetriNetUnfolderBase]: For 208/209 co-relation queries the response was YES. [2023-08-24 05:35:03,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 125 events. 56/125 cut-off events. For 208/209 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 389 event pairs, 23 based on Foata normal form. 10/130 useless extension candidates. Maximal degree in co-relation 322. Up to 73 conditions per place. [2023-08-24 05:35:03,241 INFO L140 encePairwiseOnDemand]: 139/145 looper letters, 17 selfloop transitions, 4 changer transitions 12/36 dead transitions. [2023-08-24 05:35:03,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 185 flow [2023-08-24 05:35:03,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:35:03,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:35:03,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2023-08-24 05:35:03,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2023-08-24 05:35:03,244 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2023-08-24 05:35:03,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2023-08-24 05:35:03,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:03,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2023-08-24 05:35:03,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 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 05:35:03,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 05:35:03,247 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 05:35:03,248 INFO L175 Difference]: Start difference. First operand has 31 places, 17 transitions, 64 flow. Second operand 5 states and 400 transitions. [2023-08-24 05:35:03,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 185 flow [2023-08-24 05:35:03,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 167 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-24 05:35:03,249 INFO L231 Difference]: Finished difference. Result has 34 places, 20 transitions, 88 flow [2023-08-24 05:35:03,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2023-08-24 05:35:03,251 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-08-24 05:35:03,251 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 88 flow [2023-08-24 05:35:03,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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 05:35:03,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:03,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:03,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 05:35:03,252 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 05:35:03,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:03,253 INFO L85 PathProgramCache]: Analyzing trace with hash 829629094, now seen corresponding path program 1 times [2023-08-24 05:35:03,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:03,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873882393] [2023-08-24 05:35:03,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:03,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:03,355 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 05:35:03,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:03,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873882393] [2023-08-24 05:35:03,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873882393] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:03,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:03,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:35:03,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358583640] [2023-08-24 05:35:03,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:03,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 05:35:03,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:03,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 05:35:03,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 05:35:03,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 145 [2023-08-24 05:35:03,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:03,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:03,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 145 [2023-08-24 05:35:03,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:03,400 INFO L124 PetriNetUnfolderBase]: 32/81 cut-off events. [2023-08-24 05:35:03,400 INFO L125 PetriNetUnfolderBase]: For 127/136 co-relation queries the response was YES. [2023-08-24 05:35:03,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 81 events. 32/81 cut-off events. For 127/136 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 203 event pairs, 5 based on Foata normal form. 11/89 useless extension candidates. Maximal degree in co-relation 280. Up to 48 conditions per place. [2023-08-24 05:35:03,401 INFO L140 encePairwiseOnDemand]: 139/145 looper letters, 18 selfloop transitions, 7 changer transitions 10/38 dead transitions. [2023-08-24 05:35:03,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 242 flow [2023-08-24 05:35:03,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 05:35:03,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 05:35:03,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 475 transitions. [2023-08-24 05:35:03,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459770114942529 [2023-08-24 05:35:03,402 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 475 transitions. [2023-08-24 05:35:03,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 475 transitions. [2023-08-24 05:35:03,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:03,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 475 transitions. [2023-08-24 05:35:03,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 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 05:35:03,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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 05:35:03,406 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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 05:35:03,406 INFO L175 Difference]: Start difference. First operand has 34 places, 20 transitions, 88 flow. Second operand 6 states and 475 transitions. [2023-08-24 05:35:03,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 242 flow [2023-08-24 05:35:03,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 236 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 05:35:03,409 INFO L231 Difference]: Finished difference. Result has 38 places, 23 transitions, 138 flow [2023-08-24 05:35:03,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=138, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2023-08-24 05:35:03,411 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-08-24 05:35:03,411 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 138 flow [2023-08-24 05:35:03,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:03,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:03,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:03,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 05:35:03,411 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 05:35:03,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:03,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1029683263, now seen corresponding path program 1 times [2023-08-24 05:35:03,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:03,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245073765] [2023-08-24 05:35:03,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:03,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:03,542 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 05:35:03,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:03,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245073765] [2023-08-24 05:35:03,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245073765] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:03,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:03,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 05:35:03,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774849195] [2023-08-24 05:35:03,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:03,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 05:35:03,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:03,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 05:35:03,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-24 05:35:03,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 145 [2023-08-24 05:35:03,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 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 05:35:03,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:03,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 145 [2023-08-24 05:35:03,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:03,585 INFO L124 PetriNetUnfolderBase]: 17/54 cut-off events. [2023-08-24 05:35:03,585 INFO L125 PetriNetUnfolderBase]: For 162/173 co-relation queries the response was YES. [2023-08-24 05:35:03,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 54 events. 17/54 cut-off events. For 162/173 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 2 based on Foata normal form. 10/63 useless extension candidates. Maximal degree in co-relation 206. Up to 28 conditions per place. [2023-08-24 05:35:03,586 INFO L140 encePairwiseOnDemand]: 139/145 looper letters, 15 selfloop transitions, 10 changer transitions 5/33 dead transitions. [2023-08-24 05:35:03,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 33 transitions, 253 flow [2023-08-24 05:35:03,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 05:35:03,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 05:35:03,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 543 transitions. [2023-08-24 05:35:03,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349753694581281 [2023-08-24 05:35:03,589 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 543 transitions. [2023-08-24 05:35:03,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 543 transitions. [2023-08-24 05:35:03,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:03,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 543 transitions. [2023-08-24 05:35:03,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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 05:35:03,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 145.0) internal successors, (1160), 8 states have internal predecessors, (1160), 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 05:35:03,592 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 145.0) internal successors, (1160), 8 states have internal predecessors, (1160), 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 05:35:03,592 INFO L175 Difference]: Start difference. First operand has 38 places, 23 transitions, 138 flow. Second operand 7 states and 543 transitions. [2023-08-24 05:35:03,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 33 transitions, 253 flow [2023-08-24 05:35:03,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 215 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-08-24 05:35:03,594 INFO L231 Difference]: Finished difference. Result has 41 places, 23 transitions, 138 flow [2023-08-24 05:35:03,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=138, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2023-08-24 05:35:03,596 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-08-24 05:35:03,596 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 138 flow [2023-08-24 05:35:03,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 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 05:35:03,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:35:03,596 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 05:35:03,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 05:35:03,597 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 05:35:03,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:35:03,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1735680611, now seen corresponding path program 1 times [2023-08-24 05:35:03,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:35:03,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376615463] [2023-08-24 05:35:03,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:35:03,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:35:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:35:03,689 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 05:35:03,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:35:03,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376615463] [2023-08-24 05:35:03,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376615463] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:35:03,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:35:03,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:35:03,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533796661] [2023-08-24 05:35:03,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:35:03,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:35:03,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:35:03,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:35:03,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:35:03,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 145 [2023-08-24 05:35:03,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:03,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:35:03,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 145 [2023-08-24 05:35:03,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:35:03,722 INFO L124 PetriNetUnfolderBase]: 18/52 cut-off events. [2023-08-24 05:35:03,723 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2023-08-24 05:35:03,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 52 events. 18/52 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 3 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 189. Up to 27 conditions per place. [2023-08-24 05:35:03,723 INFO L140 encePairwiseOnDemand]: 140/145 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-08-24 05:35:03,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 28 transitions, 214 flow [2023-08-24 05:35:03,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:35:03,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:35:03,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 374 transitions. [2023-08-24 05:35:03,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158620689655172 [2023-08-24 05:35:03,724 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 374 transitions. [2023-08-24 05:35:03,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 374 transitions. [2023-08-24 05:35:03,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:35:03,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 374 transitions. [2023-08-24 05:35:03,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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 05:35:03,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 05:35:03,727 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 05:35:03,727 INFO L175 Difference]: Start difference. First operand has 41 places, 23 transitions, 138 flow. Second operand 5 states and 374 transitions. [2023-08-24 05:35:03,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 28 transitions, 214 flow [2023-08-24 05:35:03,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 172 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-08-24 05:35:03,729 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-08-24 05:35:03,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=32, 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=5, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-08-24 05:35:03,729 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-08-24 05:35:03,729 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-08-24 05:35:03,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:35:03,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 05:35:03,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 05:35:03,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 05:35:03,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 05:35:03,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 05:35:03,733 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:35:03,736 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 05:35:03,736 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 05:35:03,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 05:35:03 BasicIcfg [2023-08-24 05:35:03,739 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 05:35:03,740 INFO L158 Benchmark]: Toolchain (without parser) took 4617.88ms. Allocated memory was 383.8MB in the beginning and 478.2MB in the end (delta: 94.4MB). Free memory was 359.1MB in the beginning and 265.0MB in the end (delta: 94.1MB). Peak memory consumption was 190.0MB. Max. memory is 16.0GB. [2023-08-24 05:35:03,740 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 383.8MB. Free memory is still 360.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 05:35:03,740 INFO L158 Benchmark]: CACSL2BoogieTranslator took 604.31ms. Allocated memory is still 383.8MB. Free memory was 359.1MB in the beginning and 338.6MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 05:35:03,740 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.16ms. Allocated memory is still 383.8MB. Free memory was 338.6MB in the beginning and 336.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 05:35:03,740 INFO L158 Benchmark]: Boogie Preprocessor took 31.74ms. Allocated memory is still 383.8MB. Free memory was 336.0MB in the beginning and 334.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 05:35:03,741 INFO L158 Benchmark]: RCFGBuilder took 268.08ms. Allocated memory is still 383.8MB. Free memory was 334.9MB in the beginning and 320.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 05:35:03,741 INFO L158 Benchmark]: TraceAbstraction took 3645.93ms. Allocated memory was 383.8MB in the beginning and 478.2MB in the end (delta: 94.4MB). Free memory was 320.3MB in the beginning and 265.0MB in the end (delta: 55.3MB). Peak memory consumption was 152.3MB. Max. memory is 16.0GB. [2023-08-24 05:35:03,743 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 383.8MB. Free memory is still 360.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 604.31ms. Allocated memory is still 383.8MB. Free memory was 359.1MB in the beginning and 338.6MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.16ms. Allocated memory is still 383.8MB. Free memory was 338.6MB in the beginning and 336.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 31.74ms. Allocated memory is still 383.8MB. Free memory was 336.0MB in the beginning and 334.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 268.08ms. Allocated memory is still 383.8MB. Free memory was 334.9MB in the beginning and 320.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3645.93ms. Allocated memory was 383.8MB in the beginning and 478.2MB in the end (delta: 94.4MB). Free memory was 320.3MB in the beginning and 265.0MB in the end (delta: 55.3MB). Peak memory consumption was 152.3MB. 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, 80 PlacesBefore, 27 PlacesAfterwards, 71 TransitionsBefore, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 59 TotalNumberOfCompositions, 1982 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1243, independent: 1162, independent conditional: 0, independent unconditional: 1162, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 572, independent: 551, independent conditional: 0, independent unconditional: 551, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1243, independent: 611, independent conditional: 0, independent unconditional: 611, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 572, unknown conditional: 0, unknown unconditional: 572] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, 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, 109 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: 3.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 122 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 122 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 353 IncrementalHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 6 mSDtfsCounter, 353 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=7, 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, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 366 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 05:35:03,765 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...