/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-prod-cons.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 16:10:27,939 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 16:10:28,022 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 16:10:28,029 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 16:10:28,030 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 16:10:28,060 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 16:10:28,061 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 16:10:28,061 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 16:10:28,062 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 16:10:28,065 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 16:10:28,065 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 16:10:28,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 16:10:28,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 16:10:28,067 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 16:10:28,067 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 16:10:28,067 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 16:10:28,068 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 16:10:28,068 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 16:10:28,068 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 16:10:28,068 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 16:10:28,068 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 16:10:28,069 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 16:10:28,069 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 16:10:28,070 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 16:10:28,070 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 16:10:28,070 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 16:10:28,070 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 16:10:28,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 16:10:28,071 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 16:10:28,071 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 16:10:28,072 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 16:10:28,072 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 16:10:28,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 16:10:28,072 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 16:10:28,072 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 16:10:28,073 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 16:10:28,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 16:10:28,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 16:10:28,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 16:10:28,377 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 16:10:28,379 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 16:10:28,380 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons.wvr.c [2023-08-24 16:10:29,613 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 16:10:29,817 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 16:10:29,817 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons.wvr.c [2023-08-24 16:10:29,825 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1329f028/d53084d0824245f1a6d40b1fd75889d1/FLAG533749d39 [2023-08-24 16:10:29,839 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1329f028/d53084d0824245f1a6d40b1fd75889d1 [2023-08-24 16:10:29,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 16:10:29,846 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 16:10:29,849 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 16:10:29,849 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 16:10:29,851 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 16:10:29,853 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 04:10:29" (1/1) ... [2023-08-24 16:10:29,854 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e054020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:10:29, skipping insertion in model container [2023-08-24 16:10:29,854 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 04:10:29" (1/1) ... [2023-08-24 16:10:29,880 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 16:10:30,064 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons.wvr.c[3056,3069] [2023-08-24 16:10:30,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 16:10:30,083 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 16:10:30,116 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons.wvr.c[3056,3069] [2023-08-24 16:10:30,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 16:10:30,127 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 16:10:30,127 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 16:10:30,133 INFO L206 MainTranslator]: Completed translation [2023-08-24 16:10:30,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:10:30 WrapperNode [2023-08-24 16:10:30,134 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 16:10:30,135 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 16:10:30,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 16:10:30,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 16:10:30,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:10:30" (1/1) ... [2023-08-24 16:10:30,156 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:10:30" (1/1) ... [2023-08-24 16:10:30,187 INFO L138 Inliner]: procedures = 25, calls = 50, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 172 [2023-08-24 16:10:30,187 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 16:10:30,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 16:10:30,189 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 16:10:30,189 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 16:10:30,196 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:10:30" (1/1) ... [2023-08-24 16:10:30,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:10:30" (1/1) ... [2023-08-24 16:10:30,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:10:30" (1/1) ... [2023-08-24 16:10:30,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:10:30" (1/1) ... [2023-08-24 16:10:30,215 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:10:30" (1/1) ... [2023-08-24 16:10:30,217 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:10:30" (1/1) ... [2023-08-24 16:10:30,218 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:10:30" (1/1) ... [2023-08-24 16:10:30,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:10:30" (1/1) ... [2023-08-24 16:10:30,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 16:10:30,234 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 16:10:30,234 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 16:10:30,234 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 16:10:30,234 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:10:30" (1/1) ... [2023-08-24 16:10:30,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 16:10:30,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:10:30,261 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 16:10:30,297 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 16:10:30,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 16:10:30,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 16:10:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 16:10:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 16:10:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 16:10:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 16:10:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 16:10:30,307 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 16:10:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 16:10:30,307 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 16:10:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 16:10:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 16:10:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 16:10:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 16:10:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 16:10:30,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 16:10:30,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 16:10:30,310 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 16:10:30,397 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 16:10:30,399 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 16:10:30,677 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 16:10:30,758 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 16:10:30,758 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-24 16:10:30,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 04:10:30 BoogieIcfgContainer [2023-08-24 16:10:30,765 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 16:10:30,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 16:10:30,768 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 16:10:30,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 16:10:30,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 04:10:29" (1/3) ... [2023-08-24 16:10:30,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c210e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 04:10:30, skipping insertion in model container [2023-08-24 16:10:30,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:10:30" (2/3) ... [2023-08-24 16:10:30,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c210e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 04:10:30, skipping insertion in model container [2023-08-24 16:10:30,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 04:10:30" (3/3) ... [2023-08-24 16:10:30,773 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons.wvr.c [2023-08-24 16:10:30,787 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 16:10:30,788 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 16:10:30,789 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 16:10:30,872 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 16:10:30,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 150 transitions, 324 flow [2023-08-24 16:10:31,025 INFO L124 PetriNetUnfolderBase]: 11/147 cut-off events. [2023-08-24 16:10:31,026 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 16:10:31,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 11/147 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 88 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 118. Up to 3 conditions per place. [2023-08-24 16:10:31,030 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 150 transitions, 324 flow [2023-08-24 16:10:31,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 137 transitions, 292 flow [2023-08-24 16:10:31,036 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 16:10:31,065 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 137 transitions, 292 flow [2023-08-24 16:10:31,067 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 137 transitions, 292 flow [2023-08-24 16:10:31,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 137 transitions, 292 flow [2023-08-24 16:10:31,093 INFO L124 PetriNetUnfolderBase]: 11/137 cut-off events. [2023-08-24 16:10:31,093 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 16:10:31,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 137 events. 11/137 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 87 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 118. Up to 3 conditions per place. [2023-08-24 16:10:31,095 INFO L119 LiptonReduction]: Number of co-enabled transitions 1138 [2023-08-24 16:10:35,677 INFO L134 LiptonReduction]: Checked pairs total: 2222 [2023-08-24 16:10:35,677 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-24 16:10:35,689 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 16:10:35,694 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;@7557f690, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 16:10:35,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 16:10:35,699 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 16:10:35,700 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2023-08-24 16:10:35,700 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 16:10:35,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:10:35,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:10:35,701 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 16:10:35,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:10:35,705 INFO L85 PathProgramCache]: Analyzing trace with hash -306287357, now seen corresponding path program 1 times [2023-08-24 16:10:35,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:10:35,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326743733] [2023-08-24 16:10:35,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:10:35,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:10:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:10:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:10:36,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:10:36,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326743733] [2023-08-24 16:10:36,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326743733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:10:36,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 16:10:36,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 16:10:36,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641386921] [2023-08-24 16:10:36,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:10:36,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 16:10:36,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:10:36,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 16:10:36,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 16:10:36,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 281 [2023-08-24 16:10:36,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 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 16:10:36,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:10:36,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 281 [2023-08-24 16:10:36,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:10:36,334 INFO L124 PetriNetUnfolderBase]: 238/394 cut-off events. [2023-08-24 16:10:36,335 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-08-24 16:10:36,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 394 events. 238/394 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1530 event pairs, 14 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 687. Up to 129 conditions per place. [2023-08-24 16:10:36,339 INFO L140 encePairwiseOnDemand]: 276/281 looper letters, 44 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2023-08-24 16:10:36,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 51 transitions, 230 flow [2023-08-24 16:10:36,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 16:10:36,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 16:10:36,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 676 transitions. [2023-08-24 16:10:36,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4811387900355872 [2023-08-24 16:10:36,356 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 676 transitions. [2023-08-24 16:10:36,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 676 transitions. [2023-08-24 16:10:36,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:10:36,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 676 transitions. [2023-08-24 16:10:36,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 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 16:10:36,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 16:10:36,371 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 16:10:36,373 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 68 flow. Second operand 5 states and 676 transitions. [2023-08-24 16:10:36,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 51 transitions, 230 flow [2023-08-24 16:10:36,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 51 transitions, 207 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-24 16:10:36,377 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 84 flow [2023-08-24 16:10:36,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-08-24 16:10:36,381 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2023-08-24 16:10:36,381 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 84 flow [2023-08-24 16:10:36,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 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 16:10:36,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:10:36,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:10:36,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 16:10:36,383 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 16:10:36,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:10:36,383 INFO L85 PathProgramCache]: Analyzing trace with hash -2076465825, now seen corresponding path program 2 times [2023-08-24 16:10:36,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:10:36,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19509935] [2023-08-24 16:10:36,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:10:36,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:10:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:10:36,651 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 16:10:36,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:10:36,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19509935] [2023-08-24 16:10:36,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19509935] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:10:36,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 16:10:36,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 16:10:36,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463978814] [2023-08-24 16:10:36,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:10:36,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 16:10:36,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:10:36,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 16:10:36,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 16:10:36,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 281 [2023-08-24 16:10:36,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 84 flow. Second operand has 6 states, 6 states have (on average 122.16666666666667) internal successors, (733), 6 states have internal predecessors, (733), 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 16:10:36,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:10:36,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 281 [2023-08-24 16:10:36,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:10:36,885 INFO L124 PetriNetUnfolderBase]: 474/756 cut-off events. [2023-08-24 16:10:36,885 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2023-08-24 16:10:36,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 756 events. 474/756 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2827 event pairs, 37 based on Foata normal form. 20/717 useless extension candidates. Maximal degree in co-relation 658. Up to 278 conditions per place. [2023-08-24 16:10:36,890 INFO L140 encePairwiseOnDemand]: 274/281 looper letters, 59 selfloop transitions, 6 changer transitions 4/69 dead transitions. [2023-08-24 16:10:36,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 69 transitions, 318 flow [2023-08-24 16:10:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 16:10:36,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 16:10:36,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 902 transitions. [2023-08-24 16:10:36,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45856634468734114 [2023-08-24 16:10:36,893 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 902 transitions. [2023-08-24 16:10:36,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 902 transitions. [2023-08-24 16:10:36,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:10:36,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 902 transitions. [2023-08-24 16:10:36,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 128.85714285714286) internal successors, (902), 7 states have internal predecessors, (902), 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 16:10:36,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 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 16:10:36,900 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 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 16:10:36,900 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 84 flow. Second operand 7 states and 902 transitions. [2023-08-24 16:10:36,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 69 transitions, 318 flow [2023-08-24 16:10:36,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 69 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 16:10:36,903 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 98 flow [2023-08-24 16:10:36,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=98, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-08-24 16:10:36,904 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2023-08-24 16:10:36,904 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 98 flow [2023-08-24 16:10:36,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.16666666666667) internal successors, (733), 6 states have internal predecessors, (733), 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 16:10:36,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:10:36,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:10:36,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 16:10:36,905 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 16:10:36,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:10:36,906 INFO L85 PathProgramCache]: Analyzing trace with hash 756791677, now seen corresponding path program 1 times [2023-08-24 16:10:36,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:10:36,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882912091] [2023-08-24 16:10:36,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:10:36,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:10:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:10:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:10:37,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:10:37,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882912091] [2023-08-24 16:10:37,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882912091] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:10:37,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 16:10:37,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 16:10:37,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209333286] [2023-08-24 16:10:37,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:10:37,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 16:10:37,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:10:37,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 16:10:37,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 16:10:37,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 281 [2023-08-24 16:10:37,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 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 16:10:37,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:10:37,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 281 [2023-08-24 16:10:37,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:10:37,095 INFO L124 PetriNetUnfolderBase]: 205/384 cut-off events. [2023-08-24 16:10:37,096 INFO L125 PetriNetUnfolderBase]: For 480/480 co-relation queries the response was YES. [2023-08-24 16:10:37,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 384 events. 205/384 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1442 event pairs, 87 based on Foata normal form. 14/354 useless extension candidates. Maximal degree in co-relation 662. Up to 264 conditions per place. [2023-08-24 16:10:37,098 INFO L140 encePairwiseOnDemand]: 278/281 looper letters, 28 selfloop transitions, 2 changer transitions 3/38 dead transitions. [2023-08-24 16:10:37,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 196 flow [2023-08-24 16:10:37,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 16:10:37,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 16:10:37,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2023-08-24 16:10:37,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49228944246737844 [2023-08-24 16:10:37,100 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2023-08-24 16:10:37,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2023-08-24 16:10:37,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:10:37,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2023-08-24 16:10:37,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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 16:10:37,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 16:10:37,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 16:10:37,104 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 98 flow. Second operand 3 states and 415 transitions. [2023-08-24 16:10:37,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 196 flow [2023-08-24 16:10:37,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 174 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-24 16:10:37,107 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 92 flow [2023-08-24 16:10:37,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-24 16:10:37,107 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-08-24 16:10:37,108 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 92 flow [2023-08-24 16:10:37,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 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 16:10:37,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:10:37,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:10:37,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 16:10:37,109 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 16:10:37,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:10:37,109 INFO L85 PathProgramCache]: Analyzing trace with hash -794514887, now seen corresponding path program 1 times [2023-08-24 16:10:37,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:10:37,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299128424] [2023-08-24 16:10:37,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:10:37,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:10:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:10:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 16:10:37,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:10:37,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299128424] [2023-08-24 16:10:37,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299128424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:10:37,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 16:10:37,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 16:10:37,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381762024] [2023-08-24 16:10:37,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:10:37,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 16:10:37,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:10:37,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 16:10:37,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 16:10:37,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 281 [2023-08-24 16:10:37,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 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 16:10:37,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:10:37,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 281 [2023-08-24 16:10:37,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:10:37,350 INFO L124 PetriNetUnfolderBase]: 234/450 cut-off events. [2023-08-24 16:10:37,351 INFO L125 PetriNetUnfolderBase]: For 293/293 co-relation queries the response was YES. [2023-08-24 16:10:37,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 450 events. 234/450 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1782 event pairs, 187 based on Foata normal form. 10/404 useless extension candidates. Maximal degree in co-relation 746. Up to 330 conditions per place. [2023-08-24 16:10:37,354 INFO L140 encePairwiseOnDemand]: 277/281 looper letters, 22 selfloop transitions, 2 changer transitions 12/41 dead transitions. [2023-08-24 16:10:37,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 197 flow [2023-08-24 16:10:37,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 16:10:37,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 16:10:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 512 transitions. [2023-08-24 16:10:37,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555160142348754 [2023-08-24 16:10:37,356 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 512 transitions. [2023-08-24 16:10:37,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 512 transitions. [2023-08-24 16:10:37,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:10:37,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 512 transitions. [2023-08-24 16:10:37,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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 16:10:37,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 16:10:37,360 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 16:10:37,360 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 92 flow. Second operand 4 states and 512 transitions. [2023-08-24 16:10:37,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 197 flow [2023-08-24 16:10:37,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 16:10:37,363 INFO L231 Difference]: Finished difference. Result has 38 places, 29 transitions, 104 flow [2023-08-24 16:10:37,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=38, PETRI_TRANSITIONS=29} [2023-08-24 16:10:37,364 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2023-08-24 16:10:37,364 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 104 flow [2023-08-24 16:10:37,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 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 16:10:37,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:10:37,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:10:37,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 16:10:37,365 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 16:10:37,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:10:37,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1521864676, now seen corresponding path program 1 times [2023-08-24 16:10:37,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:10:37,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297926216] [2023-08-24 16:10:37,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:10:37,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:10:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:10:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:10:38,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:10:38,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297926216] [2023-08-24 16:10:38,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297926216] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:10:38,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997733274] [2023-08-24 16:10:38,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:10:38,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:10:38,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:10:38,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 16:10:38,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 16:10:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:10:38,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 53 conjunts are in the unsatisfiable core [2023-08-24 16:10:38,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:10:38,604 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 16:10:38,673 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:10:38,861 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:10:38,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 16:10:38,994 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-24 16:10:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:10:39,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 16:10:39,708 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:10:39,709 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 53 [2023-08-24 16:10:39,731 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:10:39,732 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 484 treesize of output 460 [2023-08-24 16:10:39,752 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 128 [2023-08-24 16:10:39,767 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:10:39,769 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 122 [2023-08-24 16:10:39,784 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:10:39,784 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 109 [2023-08-24 16:10:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:10:40,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997733274] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 16:10:40,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 16:10:40,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 34 [2023-08-24 16:10:40,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478877140] [2023-08-24 16:10:40,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 16:10:40,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-24 16:10:40,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:10:40,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-24 16:10:40,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1031, Unknown=8, NotChecked=0, Total=1190 [2023-08-24 16:10:40,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 281 [2023-08-24 16:10:40,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 104 flow. Second operand has 35 states, 35 states have (on average 73.8) internal successors, (2583), 35 states have internal predecessors, (2583), 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 16:10:40,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:10:40,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 281 [2023-08-24 16:10:40,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:10:42,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:10:46,944 INFO L124 PetriNetUnfolderBase]: 1301/2155 cut-off events. [2023-08-24 16:10:46,944 INFO L125 PetriNetUnfolderBase]: For 1000/1000 co-relation queries the response was YES. [2023-08-24 16:10:46,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5691 conditions, 2155 events. 1301/2155 cut-off events. For 1000/1000 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 10577 event pairs, 47 based on Foata normal form. 33/1961 useless extension candidates. Maximal degree in co-relation 5674. Up to 450 conditions per place. [2023-08-24 16:10:46,956 INFO L140 encePairwiseOnDemand]: 265/281 looper letters, 250 selfloop transitions, 89 changer transitions 51/390 dead transitions. [2023-08-24 16:10:46,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 390 transitions, 1933 flow [2023-08-24 16:10:46,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-08-24 16:10:46,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-08-24 16:10:46,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 4348 transitions. [2023-08-24 16:10:46,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2813329019734714 [2023-08-24 16:10:46,971 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 4348 transitions. [2023-08-24 16:10:46,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 4348 transitions. [2023-08-24 16:10:46,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:10:46,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 4348 transitions. [2023-08-24 16:10:46,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 79.05454545454545) internal successors, (4348), 55 states have internal predecessors, (4348), 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 16:10:47,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 281.0) internal successors, (15736), 56 states have internal predecessors, (15736), 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 16:10:47,002 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 281.0) internal successors, (15736), 56 states have internal predecessors, (15736), 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 16:10:47,002 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 104 flow. Second operand 55 states and 4348 transitions. [2023-08-24 16:10:47,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 390 transitions, 1933 flow [2023-08-24 16:10:47,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 390 transitions, 1905 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-08-24 16:10:47,015 INFO L231 Difference]: Finished difference. Result has 115 places, 121 transitions, 808 flow [2023-08-24 16:10:47,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=808, PETRI_PLACES=115, PETRI_TRANSITIONS=121} [2023-08-24 16:10:47,016 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 83 predicate places. [2023-08-24 16:10:47,016 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 121 transitions, 808 flow [2023-08-24 16:10:47,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 73.8) internal successors, (2583), 35 states have internal predecessors, (2583), 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 16:10:47,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:10:47,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:10:47,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-24 16:10:47,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:10:47,224 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 16:10:47,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:10:47,225 INFO L85 PathProgramCache]: Analyzing trace with hash -317432546, now seen corresponding path program 2 times [2023-08-24 16:10:47,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:10:47,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712620756] [2023-08-24 16:10:47,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:10:47,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:10:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:10:48,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:10:48,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:10:48,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712620756] [2023-08-24 16:10:48,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712620756] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:10:48,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629258329] [2023-08-24 16:10:48,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 16:10:48,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:10:48,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:10:48,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 16:10:48,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 16:10:48,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 16:10:48,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 16:10:48,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 58 conjunts are in the unsatisfiable core [2023-08-24 16:10:48,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:10:48,360 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 16:10:48,414 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:10:48,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 16:10:48,646 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-24 16:10:48,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 16:10:48,717 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-24 16:10:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:10:48,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 16:10:49,584 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:10:49,588 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2023-08-24 16:10:49,601 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:10:49,602 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 192 treesize of output 184 [2023-08-24 16:10:49,611 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 128 [2023-08-24 16:10:49,626 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 116 [2023-08-24 16:10:49,642 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:10:49,643 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 81 [2023-08-24 16:10:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:10:49,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629258329] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 16:10:49,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 16:10:49,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 34 [2023-08-24 16:10:49,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619088783] [2023-08-24 16:10:49,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 16:10:49,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-24 16:10:49,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:10:49,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-24 16:10:49,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1025, Unknown=7, NotChecked=0, Total=1190 [2023-08-24 16:10:49,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 281 [2023-08-24 16:10:49,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 121 transitions, 808 flow. Second operand has 35 states, 35 states have (on average 74.02857142857142) internal successors, (2591), 35 states have internal predecessors, (2591), 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 16:10:49,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:10:49,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 281 [2023-08-24 16:10:49,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:10:53,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:10:55,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:10:58,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:11:00,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:11:02,977 INFO L124 PetriNetUnfolderBase]: 1434/2389 cut-off events. [2023-08-24 16:11:02,977 INFO L125 PetriNetUnfolderBase]: For 24198/24198 co-relation queries the response was YES. [2023-08-24 16:11:02,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13172 conditions, 2389 events. 1434/2389 cut-off events. For 24198/24198 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 12242 event pairs, 127 based on Foata normal form. 24/2412 useless extension candidates. Maximal degree in co-relation 13009. Up to 596 conditions per place. [2023-08-24 16:11:02,998 INFO L140 encePairwiseOnDemand]: 266/281 looper letters, 200 selfloop transitions, 97 changer transitions 17/314 dead transitions. [2023-08-24 16:11:02,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 314 transitions, 2984 flow [2023-08-24 16:11:02,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-24 16:11:02,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-24 16:11:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2907 transitions. [2023-08-24 16:11:03,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.279599884582091 [2023-08-24 16:11:03,007 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2907 transitions. [2023-08-24 16:11:03,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2907 transitions. [2023-08-24 16:11:03,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:11:03,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2907 transitions. [2023-08-24 16:11:03,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 78.56756756756756) internal successors, (2907), 37 states have internal predecessors, (2907), 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 16:11:03,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 281.0) internal successors, (10678), 38 states have internal predecessors, (10678), 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 16:11:03,032 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 281.0) internal successors, (10678), 38 states have internal predecessors, (10678), 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 16:11:03,032 INFO L175 Difference]: Start difference. First operand has 115 places, 121 transitions, 808 flow. Second operand 37 states and 2907 transitions. [2023-08-24 16:11:03,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 314 transitions, 2984 flow [2023-08-24 16:11:03,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 314 transitions, 2907 flow, removed 25 selfloop flow, removed 5 redundant places. [2023-08-24 16:11:03,078 INFO L231 Difference]: Finished difference. Result has 152 places, 146 transitions, 1265 flow [2023-08-24 16:11:03,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1265, PETRI_PLACES=152, PETRI_TRANSITIONS=146} [2023-08-24 16:11:03,080 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 120 predicate places. [2023-08-24 16:11:03,080 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 146 transitions, 1265 flow [2023-08-24 16:11:03,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 74.02857142857142) internal successors, (2591), 35 states have internal predecessors, (2591), 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 16:11:03,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:11:03,082 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:11:03,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 16:11:03,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-24 16:11:03,288 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 16:11:03,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:11:03,289 INFO L85 PathProgramCache]: Analyzing trace with hash 995533781, now seen corresponding path program 3 times [2023-08-24 16:11:03,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:11:03,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925581721] [2023-08-24 16:11:03,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:11:03,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:11:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:11:04,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:11:04,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:11:04,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925581721] [2023-08-24 16:11:04,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925581721] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:11:04,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023168066] [2023-08-24 16:11:04,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 16:11:04,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:11:04,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:11:04,249 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 16:11:04,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 16:11:04,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 16:11:04,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 16:11:04,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-24 16:11:04,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:11:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 16:11:04,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 16:11:04,727 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:11:04,728 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2023-08-24 16:11:04,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 16:11:04,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023168066] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 16:11:04,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 16:11:04,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 26 [2023-08-24 16:11:04,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741272028] [2023-08-24 16:11:04,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 16:11:04,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-24 16:11:04,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:11:04,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-24 16:11:04,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2023-08-24 16:11:04,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 281 [2023-08-24 16:11:04,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 146 transitions, 1265 flow. Second operand has 27 states, 27 states have (on average 84.5925925925926) internal successors, (2284), 27 states have internal predecessors, (2284), 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 16:11:04,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:11:04,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 281 [2023-08-24 16:11:04,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:11:06,711 INFO L124 PetriNetUnfolderBase]: 1913/3177 cut-off events. [2023-08-24 16:11:06,711 INFO L125 PetriNetUnfolderBase]: For 45282/45282 co-relation queries the response was YES. [2023-08-24 16:11:06,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20067 conditions, 3177 events. 1913/3177 cut-off events. For 45282/45282 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 17411 event pairs, 52 based on Foata normal form. 16/3192 useless extension candidates. Maximal degree in co-relation 18113. Up to 1152 conditions per place. [2023-08-24 16:11:06,749 INFO L140 encePairwiseOnDemand]: 265/281 looper letters, 206 selfloop transitions, 126 changer transitions 19/351 dead transitions. [2023-08-24 16:11:06,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 351 transitions, 3844 flow [2023-08-24 16:11:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-24 16:11:06,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-24 16:11:06,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2668 transitions. [2023-08-24 16:11:06,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31648873072360617 [2023-08-24 16:11:06,756 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2668 transitions. [2023-08-24 16:11:06,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2668 transitions. [2023-08-24 16:11:06,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:11:06,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2668 transitions. [2023-08-24 16:11:06,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 88.93333333333334) internal successors, (2668), 30 states have internal predecessors, (2668), 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 16:11:06,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 281.0) internal successors, (8711), 31 states have internal predecessors, (8711), 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 16:11:06,779 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 281.0) internal successors, (8711), 31 states have internal predecessors, (8711), 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 16:11:06,780 INFO L175 Difference]: Start difference. First operand has 152 places, 146 transitions, 1265 flow. Second operand 30 states and 2668 transitions. [2023-08-24 16:11:06,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 351 transitions, 3844 flow [2023-08-24 16:11:06,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 351 transitions, 3685 flow, removed 30 selfloop flow, removed 21 redundant places. [2023-08-24 16:11:06,899 INFO L231 Difference]: Finished difference. Result has 170 places, 194 transitions, 2070 flow [2023-08-24 16:11:06,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2070, PETRI_PLACES=170, PETRI_TRANSITIONS=194} [2023-08-24 16:11:06,899 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 138 predicate places. [2023-08-24 16:11:06,900 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 194 transitions, 2070 flow [2023-08-24 16:11:06,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 84.5925925925926) internal successors, (2284), 27 states have internal predecessors, (2284), 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 16:11:06,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:11:06,901 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:11:06,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 16:11:07,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:11:07,107 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 16:11:07,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:11:07,107 INFO L85 PathProgramCache]: Analyzing trace with hash -100704799, now seen corresponding path program 4 times [2023-08-24 16:11:07,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:11:07,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541374706] [2023-08-24 16:11:07,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:11:07,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:11:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:11:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:11:07,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:11:07,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541374706] [2023-08-24 16:11:07,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541374706] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:11:07,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078458106] [2023-08-24 16:11:07,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 16:11:07,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:11:07,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:11:07,976 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 16:11:08,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 16:11:08,087 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 16:11:08,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 16:11:08,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-24 16:11:08,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:11:08,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 16:11:08,333 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-24 16:11:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 16:11:08,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 16:11:08,633 WARN L839 $PredicateComparison]: unable to prove that (or (= (mod c_~v_assert~0 256) 0) (forall ((v_ArrVal_275 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_275) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))) c_~d~0) (+ c_~W~0 1)))) is different from false [2023-08-24 16:11:08,652 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:11:08,653 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 42 [2023-08-24 16:11:08,663 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-08-24 16:11:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2023-08-24 16:11:08,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078458106] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 16:11:08,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 16:11:08,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 10] total 32 [2023-08-24 16:11:08,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138664620] [2023-08-24 16:11:08,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 16:11:08,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-24 16:11:08,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:11:08,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-24 16:11:08,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=862, Unknown=1, NotChecked=60, Total=1056 [2023-08-24 16:11:08,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 281 [2023-08-24 16:11:08,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 194 transitions, 2070 flow. Second operand has 33 states, 33 states have (on average 80.33333333333333) internal successors, (2651), 33 states have internal predecessors, (2651), 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 16:11:08,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:11:08,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 281 [2023-08-24 16:11:08,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:11:11,019 INFO L124 PetriNetUnfolderBase]: 2385/3942 cut-off events. [2023-08-24 16:11:11,019 INFO L125 PetriNetUnfolderBase]: For 96619/96619 co-relation queries the response was YES. [2023-08-24 16:11:11,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29522 conditions, 3942 events. 2385/3942 cut-off events. For 96619/96619 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 22502 event pairs, 124 based on Foata normal form. 16/3958 useless extension candidates. Maximal degree in co-relation 27200. Up to 1279 conditions per place. [2023-08-24 16:11:11,057 INFO L140 encePairwiseOnDemand]: 267/281 looper letters, 223 selfloop transitions, 153 changer transitions 7/383 dead transitions. [2023-08-24 16:11:11,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 383 transitions, 4921 flow [2023-08-24 16:11:11,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-24 16:11:11,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-24 16:11:11,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2710 transitions. [2023-08-24 16:11:11,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3013790035587189 [2023-08-24 16:11:11,063 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2710 transitions. [2023-08-24 16:11:11,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2710 transitions. [2023-08-24 16:11:11,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:11:11,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2710 transitions. [2023-08-24 16:11:11,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 84.6875) internal successors, (2710), 32 states have internal predecessors, (2710), 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 16:11:11,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 281.0) internal successors, (9273), 33 states have internal predecessors, (9273), 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 16:11:11,078 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 281.0) internal successors, (9273), 33 states have internal predecessors, (9273), 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 16:11:11,078 INFO L175 Difference]: Start difference. First operand has 170 places, 194 transitions, 2070 flow. Second operand 32 states and 2710 transitions. [2023-08-24 16:11:11,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 383 transitions, 4921 flow [2023-08-24 16:11:11,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 383 transitions, 4669 flow, removed 75 selfloop flow, removed 8 redundant places. [2023-08-24 16:11:11,294 INFO L231 Difference]: Finished difference. Result has 194 places, 225 transitions, 2565 flow [2023-08-24 16:11:11,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1867, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2565, PETRI_PLACES=194, PETRI_TRANSITIONS=225} [2023-08-24 16:11:11,295 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 162 predicate places. [2023-08-24 16:11:11,295 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 225 transitions, 2565 flow [2023-08-24 16:11:11,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 80.33333333333333) internal successors, (2651), 33 states have internal predecessors, (2651), 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 16:11:11,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:11:11,296 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:11:11,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 16:11:11,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:11:11,502 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 16:11:11,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:11:11,502 INFO L85 PathProgramCache]: Analyzing trace with hash 547510685, now seen corresponding path program 5 times [2023-08-24 16:11:11,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:11:11,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830840806] [2023-08-24 16:11:11,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:11:11,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:11:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:11:13,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:11:13,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:11:13,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830840806] [2023-08-24 16:11:13,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830840806] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:11:13,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764138394] [2023-08-24 16:11:13,125 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 16:11:13,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:11:13,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:11:13,129 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 16:11:13,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 16:11:13,223 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-24 16:11:13,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 16:11:13,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-24 16:11:13,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:11:13,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 16:11:13,558 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-24 16:11:13,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 16:11:13,618 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-24 16:11:13,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 16:11:13,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 16:11:14,106 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:11:14,106 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 174 [2023-08-24 16:11:14,116 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2023-08-24 16:11:14,139 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2023-08-24 16:11:14,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-24 16:11:14,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764138394] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 16:11:14,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 16:11:14,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 13] total 41 [2023-08-24 16:11:14,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741525591] [2023-08-24 16:11:14,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 16:11:14,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-08-24 16:11:14,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:11:14,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-08-24 16:11:14,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1516, Unknown=13, NotChecked=0, Total=1722 [2023-08-24 16:11:14,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 281 [2023-08-24 16:11:14,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 225 transitions, 2565 flow. Second operand has 42 states, 42 states have (on average 76.73809523809524) internal successors, (3223), 42 states have internal predecessors, (3223), 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 16:11:14,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:11:14,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 281 [2023-08-24 16:11:14,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:11:21,152 INFO L124 PetriNetUnfolderBase]: 2729/4511 cut-off events. [2023-08-24 16:11:21,153 INFO L125 PetriNetUnfolderBase]: For 114870/114870 co-relation queries the response was YES. [2023-08-24 16:11:21,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34579 conditions, 4511 events. 2729/4511 cut-off events. For 114870/114870 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 26187 event pairs, 151 based on Foata normal form. 16/4527 useless extension candidates. Maximal degree in co-relation 34441. Up to 1382 conditions per place. [2023-08-24 16:11:21,188 INFO L140 encePairwiseOnDemand]: 268/281 looper letters, 197 selfloop transitions, 184 changer transitions 7/388 dead transitions. [2023-08-24 16:11:21,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 388 transitions, 5116 flow [2023-08-24 16:11:21,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-24 16:11:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-24 16:11:21,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2595 transitions. [2023-08-24 16:11:21,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28858985765124556 [2023-08-24 16:11:21,192 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2595 transitions. [2023-08-24 16:11:21,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2595 transitions. [2023-08-24 16:11:21,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:11:21,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2595 transitions. [2023-08-24 16:11:21,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 81.09375) internal successors, (2595), 32 states have internal predecessors, (2595), 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 16:11:21,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 281.0) internal successors, (9273), 33 states have internal predecessors, (9273), 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 16:11:21,207 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 281.0) internal successors, (9273), 33 states have internal predecessors, (9273), 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 16:11:21,207 INFO L175 Difference]: Start difference. First operand has 194 places, 225 transitions, 2565 flow. Second operand 32 states and 2595 transitions. [2023-08-24 16:11:21,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 388 transitions, 5116 flow [2023-08-24 16:11:21,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 388 transitions, 4897 flow, removed 20 selfloop flow, removed 20 redundant places. [2023-08-24 16:11:21,417 INFO L231 Difference]: Finished difference. Result has 207 places, 249 transitions, 3060 flow [2023-08-24 16:11:21,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=3060, PETRI_PLACES=207, PETRI_TRANSITIONS=249} [2023-08-24 16:11:21,418 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 175 predicate places. [2023-08-24 16:11:21,418 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 249 transitions, 3060 flow [2023-08-24 16:11:21,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 76.73809523809524) internal successors, (3223), 42 states have internal predecessors, (3223), 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 16:11:21,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:11:21,419 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:11:21,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-24 16:11:21,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:11:21,620 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 16:11:21,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:11:21,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1771414172, now seen corresponding path program 6 times [2023-08-24 16:11:21,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:11:21,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775320063] [2023-08-24 16:11:21,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:11:21,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:11:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:11:21,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 16:11:21,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:11:21,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775320063] [2023-08-24 16:11:21,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775320063] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:11:21,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450769870] [2023-08-24 16:11:21,711 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 16:11:21,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:11:21,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:11:21,712 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 16:11:21,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 16:11:21,852 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-24 16:11:21,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 16:11:21,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-24 16:11:21,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:11:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:11:21,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 16:11:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:11:22,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450769870] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 16:11:22,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 16:11:22,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-08-24 16:11:22,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030855892] [2023-08-24 16:11:22,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 16:11:22,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 16:11:22,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:11:22,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 16:11:22,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-24 16:11:22,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 281 [2023-08-24 16:11:22,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 249 transitions, 3060 flow. Second operand has 14 states, 14 states have (on average 119.07142857142857) internal successors, (1667), 14 states have internal predecessors, (1667), 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 16:11:22,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:11:22,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 281 [2023-08-24 16:11:22,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:11:23,157 INFO L124 PetriNetUnfolderBase]: 3347/6176 cut-off events. [2023-08-24 16:11:23,157 INFO L125 PetriNetUnfolderBase]: For 159397/159836 co-relation queries the response was YES. [2023-08-24 16:11:23,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48911 conditions, 6176 events. 3347/6176 cut-off events. For 159397/159836 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 44712 event pairs, 797 based on Foata normal form. 209/6314 useless extension candidates. Maximal degree in co-relation 48806. Up to 1969 conditions per place. [2023-08-24 16:11:23,290 INFO L140 encePairwiseOnDemand]: 276/281 looper letters, 158 selfloop transitions, 45 changer transitions 115/349 dead transitions. [2023-08-24 16:11:23,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 349 transitions, 4753 flow [2023-08-24 16:11:23,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 16:11:23,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 16:11:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1126 transitions. [2023-08-24 16:11:23,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44523527085804665 [2023-08-24 16:11:23,292 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1126 transitions. [2023-08-24 16:11:23,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1126 transitions. [2023-08-24 16:11:23,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:11:23,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1126 transitions. [2023-08-24 16:11:23,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.11111111111111) internal successors, (1126), 9 states have internal predecessors, (1126), 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 16:11:23,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 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 16:11:23,297 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 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 16:11:23,297 INFO L175 Difference]: Start difference. First operand has 207 places, 249 transitions, 3060 flow. Second operand 9 states and 1126 transitions. [2023-08-24 16:11:23,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 349 transitions, 4753 flow [2023-08-24 16:11:23,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 349 transitions, 4462 flow, removed 49 selfloop flow, removed 13 redundant places. [2023-08-24 16:11:23,568 INFO L231 Difference]: Finished difference. Result has 205 places, 182 transitions, 2141 flow [2023-08-24 16:11:23,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=2781, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2141, PETRI_PLACES=205, PETRI_TRANSITIONS=182} [2023-08-24 16:11:23,568 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 173 predicate places. [2023-08-24 16:11:23,568 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 182 transitions, 2141 flow [2023-08-24 16:11:23,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 119.07142857142857) internal successors, (1667), 14 states have internal predecessors, (1667), 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 16:11:23,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:11:23,569 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:11:23,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 16:11:23,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:11:23,773 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 16:11:23,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:11:23,773 INFO L85 PathProgramCache]: Analyzing trace with hash -463211469, now seen corresponding path program 7 times [2023-08-24 16:11:23,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:11:23,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666162575] [2023-08-24 16:11:23,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:11:23,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:11:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:11:24,805 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:11:24,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:11:24,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666162575] [2023-08-24 16:11:24,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666162575] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:11:24,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941834183] [2023-08-24 16:11:24,806 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 16:11:24,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:11:24,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:11:24,807 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 16:11:24,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 16:11:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:11:24,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 65 conjunts are in the unsatisfiable core [2023-08-24 16:11:24,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:11:25,045 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-24 16:11:25,108 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:11:25,231 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:11:25,331 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:11:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:11:25,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 16:11:26,791 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:11:26,791 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 97 [2023-08-24 16:11:26,818 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:11:26,819 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2242 treesize of output 2142 [2023-08-24 16:11:26,862 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:11:26,863 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 394 treesize of output 378 [2023-08-24 16:11:26,906 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:11:26,906 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 342 treesize of output 352 [2023-08-24 16:11:26,949 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:11:26,949 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 367 treesize of output 299 [2023-08-24 16:11:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:11:29,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941834183] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 16:11:29,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 16:11:29,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 18] total 47 [2023-08-24 16:11:29,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285317045] [2023-08-24 16:11:29,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 16:11:29,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-24 16:11:29,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:11:29,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-24 16:11:29,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=1950, Unknown=6, NotChecked=0, Total=2256 [2023-08-24 16:11:29,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 281 [2023-08-24 16:11:29,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 182 transitions, 2141 flow. Second operand has 48 states, 48 states have (on average 73.77083333333333) internal successors, (3541), 48 states have internal predecessors, (3541), 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 16:11:29,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:11:29,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 281 [2023-08-24 16:11:29,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:11:38,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:11:47,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:11:50,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:11:52,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:12:12,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:12:17,833 INFO L124 PetriNetUnfolderBase]: 12372/20593 cut-off events. [2023-08-24 16:12:17,834 INFO L125 PetriNetUnfolderBase]: For 553686/553686 co-relation queries the response was YES. [2023-08-24 16:12:17,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163684 conditions, 20593 events. 12372/20593 cut-off events. For 553686/553686 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 152780 event pairs, 1202 based on Foata normal form. 218/20811 useless extension candidates. Maximal degree in co-relation 163612. Up to 5093 conditions per place. [2023-08-24 16:12:18,013 INFO L140 encePairwiseOnDemand]: 262/281 looper letters, 869 selfloop transitions, 643 changer transitions 149/1661 dead transitions. [2023-08-24 16:12:18,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 1661 transitions, 23348 flow [2023-08-24 16:12:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2023-08-24 16:12:18,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2023-08-24 16:12:18,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 13437 transitions. [2023-08-24 16:12:18,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2812853255181076 [2023-08-24 16:12:18,035 INFO L72 ComplementDD]: Start complementDD. Operand 170 states and 13437 transitions. [2023-08-24 16:12:18,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 170 states and 13437 transitions. [2023-08-24 16:12:18,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:12:18,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 170 states and 13437 transitions. [2023-08-24 16:12:18,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 171 states, 170 states have (on average 79.04117647058824) internal successors, (13437), 170 states have internal predecessors, (13437), 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 16:12:18,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 171 states, 171 states have (on average 281.0) internal successors, (48051), 171 states have internal predecessors, (48051), 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 16:12:18,108 INFO L81 ComplementDD]: Finished complementDD. Result has 171 states, 171 states have (on average 281.0) internal successors, (48051), 171 states have internal predecessors, (48051), 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 16:12:18,108 INFO L175 Difference]: Start difference. First operand has 205 places, 182 transitions, 2141 flow. Second operand 170 states and 13437 transitions. [2023-08-24 16:12:18,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 1661 transitions, 23348 flow [2023-08-24 16:12:19,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 1661 transitions, 18272 flow, removed 2536 selfloop flow, removed 16 redundant places. [2023-08-24 16:12:19,278 INFO L231 Difference]: Finished difference. Result has 393 places, 804 transitions, 12606 flow [2023-08-24 16:12:19,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1983, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=170, PETRI_FLOW=12606, PETRI_PLACES=393, PETRI_TRANSITIONS=804} [2023-08-24 16:12:19,278 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 361 predicate places. [2023-08-24 16:12:19,278 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 804 transitions, 12606 flow [2023-08-24 16:12:19,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 73.77083333333333) internal successors, (3541), 48 states have internal predecessors, (3541), 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 16:12:19,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:12:19,279 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:12:19,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 16:12:19,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:12:19,487 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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 16:12:19,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:12:19,487 INFO L85 PathProgramCache]: Analyzing trace with hash 942319105, now seen corresponding path program 8 times [2023-08-24 16:12:19,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:12:19,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900531728] [2023-08-24 16:12:19,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:12:19,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:12:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:12:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:12:20,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:12:20,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900531728] [2023-08-24 16:12:20,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900531728] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:12:20,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155164019] [2023-08-24 16:12:20,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 16:12:20,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:12:20,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:12:20,425 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 16:12:20,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 16:12:20,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 16:12:20,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 16:12:20,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-24 16:12:20,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:12:21,191 INFO L322 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2023-08-24 16:12:21,192 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 13 [2023-08-24 16:12:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:12:21,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 16:12:21,636 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-24 16:12:21,637 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 53 [2023-08-24 16:12:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:12:22,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155164019] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 16:12:22,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 16:12:22,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 41 [2023-08-24 16:12:22,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047021143] [2023-08-24 16:12:22,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 16:12:22,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-08-24 16:12:22,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:12:22,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-08-24 16:12:22,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1497, Unknown=0, NotChecked=0, Total=1722 [2023-08-24 16:12:22,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 281 [2023-08-24 16:12:22,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 804 transitions, 12606 flow. Second operand has 42 states, 42 states have (on average 84.11904761904762) internal successors, (3533), 42 states have internal predecessors, (3533), 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 16:12:22,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:12:22,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 281 [2023-08-24 16:12:22,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:12:34,766 INFO L124 PetriNetUnfolderBase]: 15000/24879 cut-off events. [2023-08-24 16:12:34,766 INFO L125 PetriNetUnfolderBase]: For 2721871/2721871 co-relation queries the response was YES. [2023-08-24 16:12:34,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324719 conditions, 24879 events. 15000/24879 cut-off events. For 2721871/2721871 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 190322 event pairs, 3523 based on Foata normal form. 48/24927 useless extension candidates. Maximal degree in co-relation 319701. Up to 13440 conditions per place. [2023-08-24 16:12:35,060 INFO L140 encePairwiseOnDemand]: 265/281 looper letters, 877 selfloop transitions, 590 changer transitions 46/1513 dead transitions. [2023-08-24 16:12:35,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 1513 transitions, 29812 flow [2023-08-24 16:12:35,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-08-24 16:12:35,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-08-24 16:12:35,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 5288 transitions. [2023-08-24 16:12:35,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31895771759454733 [2023-08-24 16:12:35,067 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 5288 transitions. [2023-08-24 16:12:35,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 5288 transitions. [2023-08-24 16:12:35,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:12:35,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 5288 transitions. [2023-08-24 16:12:35,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 89.62711864406779) internal successors, (5288), 59 states have internal predecessors, (5288), 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 16:12:35,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 281.0) internal successors, (16860), 60 states have internal predecessors, (16860), 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 16:12:35,086 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 281.0) internal successors, (16860), 60 states have internal predecessors, (16860), 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 16:12:35,086 INFO L175 Difference]: Start difference. First operand has 393 places, 804 transitions, 12606 flow. Second operand 59 states and 5288 transitions. [2023-08-24 16:12:35,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 1513 transitions, 29812 flow [2023-08-24 16:12:44,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 1513 transitions, 24326 flow, removed 2507 selfloop flow, removed 20 redundant places. [2023-08-24 16:12:44,668 INFO L231 Difference]: Finished difference. Result has 447 places, 1111 transitions, 17343 flow [2023-08-24 16:12:44,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=9403, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=17343, PETRI_PLACES=447, PETRI_TRANSITIONS=1111} [2023-08-24 16:12:44,669 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 415 predicate places. [2023-08-24 16:12:44,669 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 1111 transitions, 17343 flow [2023-08-24 16:12:44,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 84.11904761904762) internal successors, (3533), 42 states have internal predecessors, (3533), 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 16:12:44,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:12:44,670 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:12:44,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-24 16:12:44,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-24 16:12:44,871 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 16:12:44,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:12:44,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1009906323, now seen corresponding path program 9 times [2023-08-24 16:12:44,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:12:44,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451372508] [2023-08-24 16:12:44,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:12:44,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:12:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:12:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:12:45,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:12:45,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451372508] [2023-08-24 16:12:45,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451372508] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:12:45,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455019089] [2023-08-24 16:12:45,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 16:12:45,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:12:45,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:12:45,811 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 16:12:45,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 16:12:46,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 16:12:46,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 16:12:46,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 68 conjunts are in the unsatisfiable core [2023-08-24 16:12:46,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:12:46,115 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-24 16:12:46,168 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-24 16:12:46,220 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:12:46,295 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:12:46,346 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:12:46,793 INFO L322 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2023-08-24 16:12:46,794 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 13 [2023-08-24 16:12:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:12:46,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 16:12:48,038 INFO L322 Elim1Store]: treesize reduction 16, result has 65.2 percent of original size [2023-08-24 16:12:48,039 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 160 treesize of output 113 [2023-08-24 16:12:48,108 INFO L322 Elim1Store]: treesize reduction 8, result has 89.9 percent of original size [2023-08-24 16:12:48,108 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 547 treesize of output 576 [2023-08-24 16:12:48,171 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-24 16:12:48,171 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 497 treesize of output 433 [2023-08-24 16:12:48,222 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-24 16:12:48,223 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 397 treesize of output 383 [2023-08-24 16:12:48,283 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-24 16:12:48,283 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 288 treesize of output 299 [2023-08-24 16:12:58,214 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:12:58,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455019089] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 16:12:58,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 16:12:58,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 17] total 48 [2023-08-24 16:12:58,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313702524] [2023-08-24 16:12:58,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 16:12:58,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-24 16:12:58,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:12:58,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-24 16:12:58,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=2034, Unknown=7, NotChecked=0, Total=2352 [2023-08-24 16:12:58,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 281 [2023-08-24 16:12:58,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 1111 transitions, 17343 flow. Second operand has 49 states, 49 states have (on average 73.81632653061224) internal successors, (3617), 49 states have internal predecessors, (3617), 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 16:12:58,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:12:58,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 281 [2023-08-24 16:12:58,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:13:28,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:13:52,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:13:58,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:14:02,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:14:04,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:14:07,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:14:12,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:14:27,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:14:32,029 INFO L124 PetriNetUnfolderBase]: 36052/61928 cut-off events. [2023-08-24 16:14:32,029 INFO L125 PetriNetUnfolderBase]: For 10508995/10508995 co-relation queries the response was YES. [2023-08-24 16:14:33,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844683 conditions, 61928 events. 36052/61928 cut-off events. For 10508995/10508995 co-relation queries the response was YES. Maximal size of possible extension queue 2280. Compared 556450 event pairs, 2657 based on Foata normal form. 2047/63958 useless extension candidates. Maximal degree in co-relation 843303. Up to 19459 conditions per place. [2023-08-24 16:14:33,452 INFO L140 encePairwiseOnDemand]: 260/281 looper letters, 1683 selfloop transitions, 2583 changer transitions 523/4789 dead transitions. [2023-08-24 16:14:33,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 733 places, 4789 transitions, 98676 flow [2023-08-24 16:14:33,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 299 states. [2023-08-24 16:14:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2023-08-24 16:14:33,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 23686 transitions. [2023-08-24 16:14:33,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2819124245706328 [2023-08-24 16:14:33,482 INFO L72 ComplementDD]: Start complementDD. Operand 299 states and 23686 transitions. [2023-08-24 16:14:33,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 299 states and 23686 transitions. [2023-08-24 16:14:33,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:14:33,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 299 states and 23686 transitions. [2023-08-24 16:14:33,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 300 states, 299 states have (on average 79.21739130434783) internal successors, (23686), 299 states have internal predecessors, (23686), 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 16:14:33,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 300 states, 300 states have (on average 281.0) internal successors, (84300), 300 states have internal predecessors, (84300), 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 16:14:33,590 INFO L81 ComplementDD]: Finished complementDD. Result has 300 states, 300 states have (on average 281.0) internal successors, (84300), 300 states have internal predecessors, (84300), 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 16:14:33,590 INFO L175 Difference]: Start difference. First operand has 447 places, 1111 transitions, 17343 flow. Second operand 299 states and 23686 transitions. [2023-08-24 16:14:33,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 733 places, 4789 transitions, 98676 flow [2023-08-24 16:15:18,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 706 places, 4789 transitions, 89999 flow, removed 3559 selfloop flow, removed 27 redundant places. [2023-08-24 16:15:18,219 INFO L231 Difference]: Finished difference. Result has 774 places, 3071 transitions, 70007 flow [2023-08-24 16:15:18,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=13051, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=951, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=734, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=299, PETRI_FLOW=70007, PETRI_PLACES=774, PETRI_TRANSITIONS=3071} [2023-08-24 16:15:18,221 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 742 predicate places. [2023-08-24 16:15:18,221 INFO L495 AbstractCegarLoop]: Abstraction has has 774 places, 3071 transitions, 70007 flow [2023-08-24 16:15:18,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 73.81632653061224) internal successors, (3617), 49 states have internal predecessors, (3617), 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 16:15:18,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:15:18,222 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:15:18,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-24 16:15:18,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-24 16:15:18,425 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 16:15:18,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:15:18,425 INFO L85 PathProgramCache]: Analyzing trace with hash 180970999, now seen corresponding path program 10 times [2023-08-24 16:15:18,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:15:18,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949558910] [2023-08-24 16:15:18,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:15:18,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:15:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:15:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:15:19,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:15:19,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949558910] [2023-08-24 16:15:19,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949558910] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:15:19,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288234197] [2023-08-24 16:15:19,347 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 16:15:19,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:15:19,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:15:19,348 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 16:15:19,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-24 16:15:19,461 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 16:15:19,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 16:15:19,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-24 16:15:19,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:15:20,008 INFO L322 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2023-08-24 16:15:20,009 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 13 [2023-08-24 16:15:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:15:20,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 16:15:20,480 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-24 16:15:20,481 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 53 [2023-08-24 16:15:21,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:15:21,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288234197] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 16:15:21,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 16:15:21,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 41 [2023-08-24 16:15:21,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281795017] [2023-08-24 16:15:21,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 16:15:21,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-08-24 16:15:21,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:15:21,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-08-24 16:15:21,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1509, Unknown=0, NotChecked=0, Total=1722 [2023-08-24 16:15:21,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 281 [2023-08-24 16:15:21,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 774 places, 3071 transitions, 70007 flow. Second operand has 42 states, 42 states have (on average 84.14285714285714) internal successors, (3534), 42 states have internal predecessors, (3534), 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 16:15:21,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:15:21,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 281 [2023-08-24 16:15:21,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:17:10,509 INFO L124 PetriNetUnfolderBase]: 54415/93431 cut-off events. [2023-08-24 16:17:10,509 INFO L125 PetriNetUnfolderBase]: For 17534991/17534991 co-relation queries the response was YES. [2023-08-24 16:17:13,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480590 conditions, 93431 events. 54415/93431 cut-off events. For 17534991/17534991 co-relation queries the response was YES. Maximal size of possible extension queue 3474. Compared 886283 event pairs, 7915 based on Foata normal form. 486/93917 useless extension candidates. Maximal degree in co-relation 1478949. Up to 30629 conditions per place. [2023-08-24 16:17:13,851 INFO L140 encePairwiseOnDemand]: 264/281 looper letters, 2855 selfloop transitions, 3623 changer transitions 846/7324 dead transitions. [2023-08-24 16:17:13,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 964 places, 7324 transitions, 220875 flow [2023-08-24 16:17:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2023-08-24 16:17:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2023-08-24 16:17:13,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 17826 transitions. [2023-08-24 16:17:13,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3156105593031285 [2023-08-24 16:17:13,865 INFO L72 ComplementDD]: Start complementDD. Operand 201 states and 17826 transitions. [2023-08-24 16:17:13,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 201 states and 17826 transitions. [2023-08-24 16:17:13,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:17:13,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 201 states and 17826 transitions. [2023-08-24 16:17:13,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 202 states, 201 states have (on average 88.68656716417911) internal successors, (17826), 201 states have internal predecessors, (17826), 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 16:17:13,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 202 states, 202 states have (on average 281.0) internal successors, (56762), 202 states have internal predecessors, (56762), 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 16:17:13,938 INFO L81 ComplementDD]: Finished complementDD. Result has 202 states, 202 states have (on average 281.0) internal successors, (56762), 202 states have internal predecessors, (56762), 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 16:17:13,938 INFO L175 Difference]: Start difference. First operand has 774 places, 3071 transitions, 70007 flow. Second operand 201 states and 17826 transitions. [2023-08-24 16:17:13,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 964 places, 7324 transitions, 220875 flow Received shutdown request... [2023-08-24 16:23:54,139 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 16:23:54,140 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 16:23:54,834 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 16:23:54,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-24 16:23:55,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-24 16:23:55,035 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-24 16:23:55,036 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 16:23:55,036 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 16:23:55,036 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 16:23:55,037 INFO L445 BasicCegarLoop]: Path program histogram: [10, 2, 1, 1] [2023-08-24 16:23:55,039 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 16:23:55,039 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 16:23:55,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 04:23:55 BasicIcfg [2023-08-24 16:23:55,042 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 16:23:55,042 INFO L158 Benchmark]: Toolchain (without parser) took 805196.10ms. Allocated memory was 350.2MB in the beginning and 11.7GB in the end (delta: 11.4GB). Free memory was 326.9MB in the beginning and 5.9GB in the end (delta: -5.6GB). Peak memory consumption was 7.1GB. Max. memory is 16.0GB. [2023-08-24 16:23:55,042 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 350.2MB. Free memory is still 327.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 16:23:55,042 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.54ms. Allocated memory is still 350.2MB. Free memory was 326.9MB in the beginning and 314.9MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 16:23:55,043 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.41ms. Allocated memory is still 350.2MB. Free memory was 314.9MB in the beginning and 313.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 16:23:55,043 INFO L158 Benchmark]: Boogie Preprocessor took 44.64ms. Allocated memory is still 350.2MB. Free memory was 312.8MB in the beginning and 311.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 16:23:55,043 INFO L158 Benchmark]: RCFGBuilder took 531.54ms. Allocated memory is still 350.2MB. Free memory was 311.4MB in the beginning and 289.3MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-24 16:23:55,043 INFO L158 Benchmark]: TraceAbstraction took 804274.24ms. Allocated memory was 350.2MB in the beginning and 11.7GB in the end (delta: 11.4GB). Free memory was 288.3MB in the beginning and 5.9GB in the end (delta: -5.6GB). Peak memory consumption was 7.0GB. Max. memory is 16.0GB. [2023-08-24 16:23:55,044 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 350.2MB. Free memory is still 327.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 285.54ms. Allocated memory is still 350.2MB. Free memory was 326.9MB in the beginning and 314.9MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.41ms. Allocated memory is still 350.2MB. Free memory was 314.9MB in the beginning and 313.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 44.64ms. Allocated memory is still 350.2MB. Free memory was 312.8MB in the beginning and 311.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 531.54ms. Allocated memory is still 350.2MB. Free memory was 311.4MB in the beginning and 289.3MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 804274.24ms. Allocated memory was 350.2MB in the beginning and 11.7GB in the end (delta: 11.4GB). Free memory was 288.3MB in the beginning and 5.9GB in the end (delta: -5.6GB). Peak memory consumption was 7.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 136 PlacesBefore, 32 PlacesAfterwards, 137 TransitionsBefore, 25 TransitionsAfterwards, 1138 CoEnabledTransitionPairs, 8 FixpointIterations, 76 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 131 TotalNumberOfCompositions, 2222 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1552, independent: 1467, independent conditional: 0, independent unconditional: 1467, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 662, independent: 642, independent conditional: 0, independent unconditional: 642, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1552, independent: 825, independent conditional: 0, independent unconditional: 825, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 662, unknown conditional: 0, unknown unconditional: 662] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 168 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: 804.1s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 759.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 891 mSolverCounterUnknown, 7802 SdHoareTripleChecker+Valid, 60.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7802 mSDsluCounter, 62 SdHoareTripleChecker+Invalid, 57.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 204 IncrementalHoareTripleChecker+Unchecked, 62 mSDsCounter, 1309 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24692 IncrementalHoareTripleChecker+Invalid, 27096 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1309 mSolverCounterUnsat, 0 mSDtfsCounter, 24692 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 891 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1550 GetRequests, 324 SyntacticMatches, 12 SemanticMatches, 1214 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 92455 ImplicationChecksByTransitivity, 128.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70007occurred in iteration=13, InterpolantAutomatonStates: 742, 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: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 35.9s InterpolantComputationTime, 648 NumberOfCodeBlocks, 648 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 896 ConstructedInterpolants, 54 QuantifiedInterpolants, 17631 SizeOfPredicates, 239 NumberOfNonLiveVariables, 2587 ConjunctsInSsa, 476 ConjunctsInUnsatCore, 34 InterpolantComputations, 4 PerfectInterpolantSequences, 41/252 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown