/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 00:17:44,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 00:17:44,199 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 [2023-08-27 00:17:44,204 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 00:17:44,204 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 00:17:44,229 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 00:17:44,230 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 00:17:44,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 00:17:44,231 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 00:17:44,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 00:17:44,234 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 00:17:44,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 00:17:44,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 00:17:44,235 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 00:17:44,235 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 00:17:44,236 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 00:17:44,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 00:17:44,236 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 00:17:44,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 00:17:44,236 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 00:17:44,236 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 00:17:44,237 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 00:17:44,237 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 00:17:44,238 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 00:17:44,238 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 00:17:44,238 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 00:17:44,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 00:17:44,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:17:44,238 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 00:17:44,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 00:17:44,239 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 00:17:44,239 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 00:17:44,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 00:17:44,240 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 00:17:44,240 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 00:17:44,240 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 00:17:44,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 00:17:44,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 00:17:44,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 00:17:44,518 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 00:17:44,519 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 00:17:44,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2023-08-27 00:17:45,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 00:17:45,620 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 00:17:45,620 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2023-08-27 00:17:45,625 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2439bf1d0/72ff328225294562873a85dc12c318a3/FLAGe7267da70 [2023-08-27 00:17:45,633 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2439bf1d0/72ff328225294562873a85dc12c318a3 [2023-08-27 00:17:45,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 00:17:45,636 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 00:17:45,636 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 00:17:45,637 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 00:17:45,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 00:17:45,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:17:45" (1/1) ... [2023-08-27 00:17:45,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2890dfc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:17:45, skipping insertion in model container [2023-08-27 00:17:45,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:17:45" (1/1) ... [2023-08-27 00:17:45,656 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 00:17:45,791 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:17:45,798 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 00:17:45,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:17:45,830 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:17:45,830 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:17:45,835 INFO L206 MainTranslator]: Completed translation [2023-08-27 00:17:45,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:17:45 WrapperNode [2023-08-27 00:17:45,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 00:17:45,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 00:17:45,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 00:17:45,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 00:17:45,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:17:45" (1/1) ... [2023-08-27 00:17:45,857 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:17:45" (1/1) ... [2023-08-27 00:17:45,876 INFO L138 Inliner]: procedures = 21, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2023-08-27 00:17:45,876 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 00:17:45,877 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 00:17:45,877 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 00:17:45,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 00:17:45,883 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:17:45" (1/1) ... [2023-08-27 00:17:45,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:17:45" (1/1) ... [2023-08-27 00:17:45,886 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:17:45" (1/1) ... [2023-08-27 00:17:45,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:17:45" (1/1) ... [2023-08-27 00:17:45,901 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:17:45" (1/1) ... [2023-08-27 00:17:45,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:17:45" (1/1) ... [2023-08-27 00:17:45,905 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:17:45" (1/1) ... [2023-08-27 00:17:45,905 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:17:45" (1/1) ... [2023-08-27 00:17:45,907 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 00:17:45,907 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 00:17:45,907 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 00:17:45,907 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 00:17:45,908 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:17:45" (1/1) ... [2023-08-27 00:17:45,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:17:45,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:17:45,945 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) [2023-08-27 00:17:45,985 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 [2023-08-27 00:17:45,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 00:17:45,992 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 00:17:45,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 00:17:45,992 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 00:17:45,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 00:17:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 00:17:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 00:17:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 00:17:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 00:17:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 00:17:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 00:17:45,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 00:17:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 00:17:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 00:17:45,994 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 00:17:46,075 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 00:17:46,076 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 00:17:46,226 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 00:17:46,239 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 00:17:46,239 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 00:17:46,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:17:46 BoogieIcfgContainer [2023-08-27 00:17:46,241 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 00:17:46,242 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 00:17:46,242 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 00:17:46,244 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 00:17:46,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 12:17:45" (1/3) ... [2023-08-27 00:17:46,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2689535f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:17:46, skipping insertion in model container [2023-08-27 00:17:46,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:17:45" (2/3) ... [2023-08-27 00:17:46,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2689535f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:17:46, skipping insertion in model container [2023-08-27 00:17:46,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:17:46" (3/3) ... [2023-08-27 00:17:46,246 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2023-08-27 00:17:46,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 00:17:46,257 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-27 00:17:46,257 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 00:17:46,295 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 00:17:46,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 104 transitions, 224 flow [2023-08-27 00:17:46,381 INFO L124 PetriNetUnfolderBase]: 8/102 cut-off events. [2023-08-27 00:17:46,381 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 00:17:46,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 102 events. 8/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-08-27 00:17:46,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 104 transitions, 224 flow [2023-08-27 00:17:46,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 93 transitions, 198 flow [2023-08-27 00:17:46,392 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 00:17:46,401 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 93 transitions, 198 flow [2023-08-27 00:17:46,405 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 93 transitions, 198 flow [2023-08-27 00:17:46,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 93 transitions, 198 flow [2023-08-27 00:17:46,432 INFO L124 PetriNetUnfolderBase]: 8/93 cut-off events. [2023-08-27 00:17:46,433 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 00:17:46,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 8/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-08-27 00:17:46,435 INFO L119 LiptonReduction]: Number of co-enabled transitions 728 [2023-08-27 00:17:48,593 INFO L134 LiptonReduction]: Checked pairs total: 804 [2023-08-27 00:17:48,593 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-27 00:17:48,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 00:17:48,606 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;@24e64d77, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 00:17:48,606 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-27 00:17:48,609 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 00:17:48,609 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2023-08-27 00:17:48,609 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 00:17:48,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:17:48,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:17:48,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 00:17:48,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:17:48,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1632923631, now seen corresponding path program 1 times [2023-08-27 00:17:48,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:17:48,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834454573] [2023-08-27 00:17:48,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:17:48,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:17:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:17:48,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:17:48,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:17:48,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834454573] [2023-08-27 00:17:48,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834454573] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:17:48,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:17:48,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:17:48,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886016806] [2023-08-27 00:17:48,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:17:48,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:17:48,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:17:48,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:17:48,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:17:48,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 198 [2023-08-27 00:17:48,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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) [2023-08-27 00:17:48,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:17:48,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 198 [2023-08-27 00:17:48,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:17:48,950 INFO L124 PetriNetUnfolderBase]: 41/77 cut-off events. [2023-08-27 00:17:48,951 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-27 00:17:48,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 77 events. 41/77 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 161 event pairs, 9 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 120. Up to 51 conditions per place. [2023-08-27 00:17:48,953 INFO L140 encePairwiseOnDemand]: 194/198 looper letters, 19 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2023-08-27 00:17:48,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 23 transitions, 113 flow [2023-08-27 00:17:48,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:17:48,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:17:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2023-08-27 00:17:48,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2023-08-27 00:17:48,964 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2023-08-27 00:17:48,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2023-08-27 00:17:48,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:17:48,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2023-08-27 00:17:48,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:17:48,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 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) [2023-08-27 00:17:48,972 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 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) [2023-08-27 00:17:48,973 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 285 transitions. [2023-08-27 00:17:48,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 23 transitions, 113 flow [2023-08-27 00:17:48,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 23 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 00:17:48,975 INFO L231 Difference]: Finished difference. Result has 17 places, 15 transitions, 49 flow [2023-08-27 00:17:48,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=17, PETRI_TRANSITIONS=15} [2023-08-27 00:17:48,979 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2023-08-27 00:17:48,979 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 15 transitions, 49 flow [2023-08-27 00:17:48,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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) [2023-08-27 00:17:48,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:17:48,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:17:48,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 00:17:48,980 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 00:17:48,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:17:48,980 INFO L85 PathProgramCache]: Analyzing trace with hash 919660645, now seen corresponding path program 1 times [2023-08-27 00:17:48,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:17:48,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799239214] [2023-08-27 00:17:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:17:48,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:17:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:17:49,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:17:49,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:17:49,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799239214] [2023-08-27 00:17:49,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799239214] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:17:49,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:17:49,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:17:49,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358550111] [2023-08-27 00:17:49,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:17:49,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:17:49,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:17:49,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:17:49,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:17:49,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 198 [2023-08-27 00:17:49,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:17:49,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:17:49,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 198 [2023-08-27 00:17:49,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:17:49,208 INFO L124 PetriNetUnfolderBase]: 35/71 cut-off events. [2023-08-27 00:17:49,208 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-08-27 00:17:49,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 71 events. 35/71 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 157 event pairs, 2 based on Foata normal form. 6/77 useless extension candidates. Maximal degree in co-relation 55. Up to 29 conditions per place. [2023-08-27 00:17:49,209 INFO L140 encePairwiseOnDemand]: 193/198 looper letters, 19 selfloop transitions, 4 changer transitions 10/33 dead transitions. [2023-08-27 00:17:49,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 33 transitions, 158 flow [2023-08-27 00:17:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:17:49,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:17:49,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2023-08-27 00:17:49,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2023-08-27 00:17:49,213 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2023-08-27 00:17:49,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2023-08-27 00:17:49,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:17:49,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2023-08-27 00:17:49,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:17:49,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-08-27 00:17:49,220 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-08-27 00:17:49,220 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 49 flow. Second operand 5 states and 400 transitions. [2023-08-27 00:17:49,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 33 transitions, 158 flow [2023-08-27 00:17:49,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 33 transitions, 155 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:17:49,222 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 59 flow [2023-08-27 00:17:49,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=59, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-27 00:17:49,223 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2023-08-27 00:17:49,223 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 59 flow [2023-08-27 00:17:49,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:17:49,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:17:49,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:17:49,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 00:17:49,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 00:17:49,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:17:49,230 INFO L85 PathProgramCache]: Analyzing trace with hash 532224558, now seen corresponding path program 1 times [2023-08-27 00:17:49,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:17:49,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005867476] [2023-08-27 00:17:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:17:49,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:17:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:17:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:17:49,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:17:49,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005867476] [2023-08-27 00:17:49,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005867476] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:17:49,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104074002] [2023-08-27 00:17:49,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:17:49,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:17:49,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:17:49,383 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) [2023-08-27 00:17:49,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 00:17:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:17:49,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 00:17:49,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:17:49,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:17:49,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:17:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:17:49,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104074002] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:17:49,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:17:49,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 00:17:49,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668839489] [2023-08-27 00:17:49,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:17:49,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:17:49,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:17:49,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:17:49,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:17:49,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 198 [2023-08-27 00:17:49,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 59 flow. Second operand has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 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) [2023-08-27 00:17:49,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:17:49,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 198 [2023-08-27 00:17:49,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:17:49,809 INFO L124 PetriNetUnfolderBase]: 50/91 cut-off events. [2023-08-27 00:17:49,809 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-08-27 00:17:49,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 91 events. 50/91 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 192 event pairs, 4 based on Foata normal form. 18/109 useless extension candidates. Maximal degree in co-relation 70. Up to 44 conditions per place. [2023-08-27 00:17:49,810 INFO L140 encePairwiseOnDemand]: 193/198 looper letters, 28 selfloop transitions, 8 changer transitions 0/36 dead transitions. [2023-08-27 00:17:49,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 36 transitions, 195 flow [2023-08-27 00:17:49,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:17:49,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:17:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 477 transitions. [2023-08-27 00:17:49,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2023-08-27 00:17:49,812 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 477 transitions. [2023-08-27 00:17:49,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 477 transitions. [2023-08-27 00:17:49,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:17:49,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 477 transitions. [2023-08-27 00:17:49,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.5) internal successors, (477), 6 states have internal predecessors, (477), 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) [2023-08-27 00:17:49,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 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) [2023-08-27 00:17:49,815 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 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) [2023-08-27 00:17:49,815 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 59 flow. Second operand 6 states and 477 transitions. [2023-08-27 00:17:49,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 36 transitions, 195 flow [2023-08-27 00:17:49,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 36 transitions, 190 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 00:17:49,816 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 112 flow [2023-08-27 00:17:49,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-08-27 00:17:49,817 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 9 predicate places. [2023-08-27 00:17:49,817 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 112 flow [2023-08-27 00:17:49,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 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) [2023-08-27 00:17:49,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:17:49,817 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:17:49,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 00:17:50,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:17:50,021 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 00:17:50,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:17:50,023 INFO L85 PathProgramCache]: Analyzing trace with hash 872973525, now seen corresponding path program 2 times [2023-08-27 00:17:50,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:17:50,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941500209] [2023-08-27 00:17:50,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:17:50,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:17:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:17:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:17:50,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:17:50,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941500209] [2023-08-27 00:17:50,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941500209] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:17:50,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:17:50,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:17:50,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084900218] [2023-08-27 00:17:50,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:17:50,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:17:50,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:17:50,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:17:50,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:17:50,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 198 [2023-08-27 00:17:50,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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) [2023-08-27 00:17:50,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:17:50,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 198 [2023-08-27 00:17:50,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:17:50,199 INFO L124 PetriNetUnfolderBase]: 59/106 cut-off events. [2023-08-27 00:17:50,199 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-08-27 00:17:50,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 106 events. 59/106 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 234 event pairs, 10 based on Foata normal form. 6/112 useless extension candidates. Maximal degree in co-relation 246. Up to 91 conditions per place. [2023-08-27 00:17:50,203 INFO L140 encePairwiseOnDemand]: 194/198 looper letters, 24 selfloop transitions, 5 changer transitions 0/29 dead transitions. [2023-08-27 00:17:50,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 216 flow [2023-08-27 00:17:50,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:17:50,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:17:50,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 351 transitions. [2023-08-27 00:17:50,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2023-08-27 00:17:50,205 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 351 transitions. [2023-08-27 00:17:50,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 351 transitions. [2023-08-27 00:17:50,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:17:50,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 351 transitions. [2023-08-27 00:17:50,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 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) [2023-08-27 00:17:50,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 198.0) internal successors, (990), 5 states have internal predecessors, (990), 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) [2023-08-27 00:17:50,207 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 198.0) internal successors, (990), 5 states have internal predecessors, (990), 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) [2023-08-27 00:17:50,207 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 112 flow. Second operand 4 states and 351 transitions. [2023-08-27 00:17:50,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 216 flow [2023-08-27 00:17:50,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 197 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-27 00:17:50,211 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 132 flow [2023-08-27 00:17:50,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-08-27 00:17:50,212 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 12 predicate places. [2023-08-27 00:17:50,212 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 132 flow [2023-08-27 00:17:50,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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) [2023-08-27 00:17:50,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:17:50,213 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:17:50,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 00:17:50,213 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 00:17:50,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:17:50,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1699755984, now seen corresponding path program 1 times [2023-08-27 00:17:50,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:17:50,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935349832] [2023-08-27 00:17:50,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:17:50,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:17:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:17:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:17:50,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:17:50,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935349832] [2023-08-27 00:17:50,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935349832] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:17:50,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722389039] [2023-08-27 00:17:50,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:17:50,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:17:50,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:17:50,361 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) [2023-08-27 00:17:50,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 00:17:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:17:50,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 00:17:50,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:17:50,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:17:50,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:17:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:17:50,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722389039] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:17:50,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:17:50,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-27 00:17:50,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927080483] [2023-08-27 00:17:50,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:17:50,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 00:17:50,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:17:50,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 00:17:50,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-27 00:17:50,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 198 [2023-08-27 00:17:50,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 132 flow. Second operand has 9 states, 9 states have (on average 80.11111111111111) internal successors, (721), 9 states have internal predecessors, (721), 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) [2023-08-27 00:17:50,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:17:50,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 198 [2023-08-27 00:17:50,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:17:50,763 INFO L124 PetriNetUnfolderBase]: 137/244 cut-off events. [2023-08-27 00:17:50,763 INFO L125 PetriNetUnfolderBase]: For 315/315 co-relation queries the response was YES. [2023-08-27 00:17:50,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 244 events. 137/244 cut-off events. For 315/315 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 778 event pairs, 4 based on Foata normal form. 20/260 useless extension candidates. Maximal degree in co-relation 548. Up to 115 conditions per place. [2023-08-27 00:17:50,764 INFO L140 encePairwiseOnDemand]: 194/198 looper letters, 54 selfloop transitions, 11 changer transitions 0/65 dead transitions. [2023-08-27 00:17:50,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 65 transitions, 481 flow [2023-08-27 00:17:50,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:17:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:17:50,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 586 transitions. [2023-08-27 00:17:50,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4227994227994228 [2023-08-27 00:17:50,766 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 586 transitions. [2023-08-27 00:17:50,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 586 transitions. [2023-08-27 00:17:50,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:17:50,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 586 transitions. [2023-08-27 00:17:50,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.71428571428571) internal successors, (586), 7 states have internal predecessors, (586), 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) [2023-08-27 00:17:50,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 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) [2023-08-27 00:17:50,769 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 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) [2023-08-27 00:17:50,769 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 132 flow. Second operand 7 states and 586 transitions. [2023-08-27 00:17:50,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 65 transitions, 481 flow [2023-08-27 00:17:50,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 65 transitions, 470 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-27 00:17:50,771 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 212 flow [2023-08-27 00:17:50,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=212, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-08-27 00:17:50,771 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 18 predicate places. [2023-08-27 00:17:50,772 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 212 flow [2023-08-27 00:17:50,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.11111111111111) internal successors, (721), 9 states have internal predecessors, (721), 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) [2023-08-27 00:17:50,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:17:50,772 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:17:50,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 00:17:50,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:17:50,977 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 00:17:50,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:17:50,978 INFO L85 PathProgramCache]: Analyzing trace with hash 482303621, now seen corresponding path program 2 times [2023-08-27 00:17:50,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:17:50,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025222627] [2023-08-27 00:17:50,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:17:50,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:17:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:17:51,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:17:51,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:17:51,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025222627] [2023-08-27 00:17:51,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025222627] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:17:51,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879260326] [2023-08-27 00:17:51,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:17:51,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:17:51,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:17:51,645 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) [2023-08-27 00:17:51,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 00:17:51,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:17:51,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:17:51,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 00:17:51,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:17:52,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:17:52,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:17:52,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:17:52,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879260326] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:17:52,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:17:52,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2023-08-27 00:17:52,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263312474] [2023-08-27 00:17:52,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:17:52,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 00:17:52,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:17:52,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 00:17:52,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-27 00:17:52,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 198 [2023-08-27 00:17:52,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 212 flow. Second operand has 11 states, 11 states have (on average 70.18181818181819) internal successors, (772), 11 states have internal predecessors, (772), 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) [2023-08-27 00:17:52,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:17:52,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 198 [2023-08-27 00:17:52,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:17:53,324 INFO L124 PetriNetUnfolderBase]: 248/445 cut-off events. [2023-08-27 00:17:53,324 INFO L125 PetriNetUnfolderBase]: For 1015/1015 co-relation queries the response was YES. [2023-08-27 00:17:53,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2009 conditions, 445 events. 248/445 cut-off events. For 1015/1015 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1723 event pairs, 4 based on Foata normal form. 2/447 useless extension candidates. Maximal degree in co-relation 1062. Up to 213 conditions per place. [2023-08-27 00:17:53,327 INFO L140 encePairwiseOnDemand]: 193/198 looper letters, 61 selfloop transitions, 37 changer transitions 2/100 dead transitions. [2023-08-27 00:17:53,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 100 transitions, 826 flow [2023-08-27 00:17:53,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 00:17:53,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 00:17:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 877 transitions. [2023-08-27 00:17:53,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3691077441077441 [2023-08-27 00:17:53,330 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 877 transitions. [2023-08-27 00:17:53,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 877 transitions. [2023-08-27 00:17:53,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:17:53,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 877 transitions. [2023-08-27 00:17:53,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 73.08333333333333) internal successors, (877), 12 states have internal predecessors, (877), 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) [2023-08-27 00:17:53,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 198.0) internal successors, (2574), 13 states have internal predecessors, (2574), 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) [2023-08-27 00:17:53,334 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 198.0) internal successors, (2574), 13 states have internal predecessors, (2574), 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) [2023-08-27 00:17:53,334 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 212 flow. Second operand 12 states and 877 transitions. [2023-08-27 00:17:53,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 100 transitions, 826 flow [2023-08-27 00:17:53,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 100 transitions, 788 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-08-27 00:17:53,338 INFO L231 Difference]: Finished difference. Result has 49 places, 59 transitions, 544 flow [2023-08-27 00:17:53,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=544, PETRI_PLACES=49, PETRI_TRANSITIONS=59} [2023-08-27 00:17:53,339 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 31 predicate places. [2023-08-27 00:17:53,339 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 59 transitions, 544 flow [2023-08-27 00:17:53,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 70.18181818181819) internal successors, (772), 11 states have internal predecessors, (772), 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) [2023-08-27 00:17:53,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:17:53,339 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:17:53,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-27 00:17:53,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:17:53,544 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 00:17:53,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:17:53,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1140772883, now seen corresponding path program 3 times [2023-08-27 00:17:53,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:17:53,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838353792] [2023-08-27 00:17:53,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:17:53,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:17:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:17:54,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:17:54,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:17:54,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838353792] [2023-08-27 00:17:54,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838353792] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:17:54,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395777165] [2023-08-27 00:17:54,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:17:54,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:17:54,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:17:54,044 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) [2023-08-27 00:17:54,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 00:17:54,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 00:17:54,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:17:54,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 00:17:54,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:17:54,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:17:54,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:17:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:17:54,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395777165] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:17:54,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:17:54,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-27 00:17:54,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747162409] [2023-08-27 00:17:54,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:17:54,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 00:17:54,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:17:54,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 00:17:54,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-08-27 00:17:54,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 198 [2023-08-27 00:17:54,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 59 transitions, 544 flow. Second operand has 12 states, 12 states have (on average 65.75) internal successors, (789), 12 states have internal predecessors, (789), 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) [2023-08-27 00:17:54,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:17:54,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 198 [2023-08-27 00:17:54,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:17:54,818 INFO L124 PetriNetUnfolderBase]: 376/701 cut-off events. [2023-08-27 00:17:54,819 INFO L125 PetriNetUnfolderBase]: For 2503/2503 co-relation queries the response was YES. [2023-08-27 00:17:54,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3457 conditions, 701 events. 376/701 cut-off events. For 2503/2503 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3218 event pairs, 12 based on Foata normal form. 2/703 useless extension candidates. Maximal degree in co-relation 2784. Up to 317 conditions per place. [2023-08-27 00:17:54,823 INFO L140 encePairwiseOnDemand]: 193/198 looper letters, 74 selfloop transitions, 49 changer transitions 2/125 dead transitions. [2023-08-27 00:17:54,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 125 transitions, 1242 flow [2023-08-27 00:17:54,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 00:17:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 00:17:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 697 transitions. [2023-08-27 00:17:54,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.352020202020202 [2023-08-27 00:17:54,825 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 697 transitions. [2023-08-27 00:17:54,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 697 transitions. [2023-08-27 00:17:54,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:17:54,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 697 transitions. [2023-08-27 00:17:54,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 69.7) internal successors, (697), 10 states have internal predecessors, (697), 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) [2023-08-27 00:17:54,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 198.0) internal successors, (2178), 11 states have internal predecessors, (2178), 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) [2023-08-27 00:17:54,828 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 198.0) internal successors, (2178), 11 states have internal predecessors, (2178), 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) [2023-08-27 00:17:54,829 INFO L175 Difference]: Start difference. First operand has 49 places, 59 transitions, 544 flow. Second operand 10 states and 697 transitions. [2023-08-27 00:17:54,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 125 transitions, 1242 flow [2023-08-27 00:17:54,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 125 transitions, 1100 flow, removed 68 selfloop flow, removed 2 redundant places. [2023-08-27 00:17:54,842 INFO L231 Difference]: Finished difference. Result has 62 places, 88 transitions, 917 flow [2023-08-27 00:17:54,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=917, PETRI_PLACES=62, PETRI_TRANSITIONS=88} [2023-08-27 00:17:54,842 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 44 predicate places. [2023-08-27 00:17:54,842 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 88 transitions, 917 flow [2023-08-27 00:17:54,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 65.75) internal successors, (789), 12 states have internal predecessors, (789), 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) [2023-08-27 00:17:54,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:17:54,843 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:17:54,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 00:17:55,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:17:55,047 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 00:17:55,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:17:55,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2108591473, now seen corresponding path program 4 times [2023-08-27 00:17:55,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:17:55,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991982582] [2023-08-27 00:17:55,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:17:55,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:17:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:17:55,571 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:17:55,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:17:55,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991982582] [2023-08-27 00:17:55,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991982582] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:17:55,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300282020] [2023-08-27 00:17:55,572 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 00:17:55,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:17:55,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:17:55,573 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) [2023-08-27 00:17:55,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 00:17:55,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 00:17:55,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:17:55,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 00:17:55,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:17:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:17:55,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:17:56,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:17:56,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300282020] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:17:56,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:17:56,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2023-08-27 00:17:56,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478271505] [2023-08-27 00:17:56,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:17:56,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 00:17:56,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:17:56,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 00:17:56,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-08-27 00:17:56,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 198 [2023-08-27 00:17:56,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 88 transitions, 917 flow. Second operand has 14 states, 14 states have (on average 69.35714285714286) internal successors, (971), 14 states have internal predecessors, (971), 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) [2023-08-27 00:17:56,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:17:56,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 198 [2023-08-27 00:17:56,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:17:57,434 INFO L124 PetriNetUnfolderBase]: 524/989 cut-off events. [2023-08-27 00:17:57,434 INFO L125 PetriNetUnfolderBase]: For 4271/4271 co-relation queries the response was YES. [2023-08-27 00:17:57,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5174 conditions, 989 events. 524/989 cut-off events. For 4271/4271 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5011 event pairs, 16 based on Foata normal form. 4/993 useless extension candidates. Maximal degree in co-relation 4513. Up to 437 conditions per place. [2023-08-27 00:17:57,441 INFO L140 encePairwiseOnDemand]: 193/198 looper letters, 55 selfloop transitions, 106 changer transitions 2/163 dead transitions. [2023-08-27 00:17:57,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 163 transitions, 1782 flow [2023-08-27 00:17:57,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 00:17:57,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 00:17:57,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1090 transitions. [2023-08-27 00:17:57,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367003367003367 [2023-08-27 00:17:57,444 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1090 transitions. [2023-08-27 00:17:57,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1090 transitions. [2023-08-27 00:17:57,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:17:57,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1090 transitions. [2023-08-27 00:17:57,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 72.66666666666667) internal successors, (1090), 15 states have internal predecessors, (1090), 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) [2023-08-27 00:17:57,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 198.0) internal successors, (3168), 16 states have internal predecessors, (3168), 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) [2023-08-27 00:17:57,449 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 198.0) internal successors, (3168), 16 states have internal predecessors, (3168), 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) [2023-08-27 00:17:57,449 INFO L175 Difference]: Start difference. First operand has 62 places, 88 transitions, 917 flow. Second operand 15 states and 1090 transitions. [2023-08-27 00:17:57,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 163 transitions, 1782 flow [2023-08-27 00:17:57,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 163 transitions, 1649 flow, removed 60 selfloop flow, removed 2 redundant places. [2023-08-27 00:17:57,468 INFO L231 Difference]: Finished difference. Result has 75 places, 115 transitions, 1345 flow [2023-08-27 00:17:57,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1345, PETRI_PLACES=75, PETRI_TRANSITIONS=115} [2023-08-27 00:17:57,470 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 57 predicate places. [2023-08-27 00:17:57,470 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 115 transitions, 1345 flow [2023-08-27 00:17:57,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 69.35714285714286) internal successors, (971), 14 states have internal predecessors, (971), 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) [2023-08-27 00:17:57,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:17:57,471 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:17:57,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 00:17:57,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:17:57,675 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 00:17:57,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:17:57,675 INFO L85 PathProgramCache]: Analyzing trace with hash 958867657, now seen corresponding path program 5 times [2023-08-27 00:17:57,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:17:57,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000909153] [2023-08-27 00:17:57,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:17:57,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:17:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:17:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:17:57,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:17:57,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000909153] [2023-08-27 00:17:57,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000909153] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:17:57,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821320280] [2023-08-27 00:17:57,965 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 00:17:57,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:17:57,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:17:57,977 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) [2023-08-27 00:17:57,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 00:17:58,047 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 00:17:58,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:17:58,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 00:17:58,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:17:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:17:58,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:17:58,351 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:17:58,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821320280] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:17:58,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:17:58,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 16 [2023-08-27 00:17:58,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777886749] [2023-08-27 00:17:58,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:17:58,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 00:17:58,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:17:58,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 00:17:58,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-08-27 00:17:58,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 198 [2023-08-27 00:17:58,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 115 transitions, 1345 flow. Second operand has 17 states, 17 states have (on average 80.47058823529412) internal successors, (1368), 17 states have internal predecessors, (1368), 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) [2023-08-27 00:17:58,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:17:58,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 198 [2023-08-27 00:17:58,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:17:59,529 INFO L124 PetriNetUnfolderBase]: 807/1490 cut-off events. [2023-08-27 00:17:59,529 INFO L125 PetriNetUnfolderBase]: For 7901/7901 co-relation queries the response was YES. [2023-08-27 00:17:59,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8262 conditions, 1490 events. 807/1490 cut-off events. For 7901/7901 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8417 event pairs, 0 based on Foata normal form. 202/1692 useless extension candidates. Maximal degree in co-relation 7351. Up to 577 conditions per place. [2023-08-27 00:17:59,537 INFO L140 encePairwiseOnDemand]: 193/198 looper letters, 183 selfloop transitions, 79 changer transitions 66/328 dead transitions. [2023-08-27 00:17:59,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 328 transitions, 4274 flow [2023-08-27 00:17:59,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 00:17:59,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 00:17:59,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1425 transitions. [2023-08-27 00:17:59,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4233511586452763 [2023-08-27 00:17:59,540 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1425 transitions. [2023-08-27 00:17:59,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1425 transitions. [2023-08-27 00:17:59,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:17:59,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1425 transitions. [2023-08-27 00:17:59,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 83.82352941176471) internal successors, (1425), 17 states have internal predecessors, (1425), 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) [2023-08-27 00:17:59,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 198.0) internal successors, (3564), 18 states have internal predecessors, (3564), 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) [2023-08-27 00:17:59,547 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 198.0) internal successors, (3564), 18 states have internal predecessors, (3564), 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) [2023-08-27 00:17:59,547 INFO L175 Difference]: Start difference. First operand has 75 places, 115 transitions, 1345 flow. Second operand 17 states and 1425 transitions. [2023-08-27 00:17:59,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 328 transitions, 4274 flow [2023-08-27 00:17:59,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 328 transitions, 3760 flow, removed 228 selfloop flow, removed 7 redundant places. [2023-08-27 00:17:59,576 INFO L231 Difference]: Finished difference. Result has 84 places, 132 transitions, 1434 flow [2023-08-27 00:17:59,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1434, PETRI_PLACES=84, PETRI_TRANSITIONS=132} [2023-08-27 00:17:59,577 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 66 predicate places. [2023-08-27 00:17:59,578 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 132 transitions, 1434 flow [2023-08-27 00:17:59,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 80.47058823529412) internal successors, (1368), 17 states have internal predecessors, (1368), 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) [2023-08-27 00:17:59,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:17:59,579 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:17:59,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-27 00:17:59,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:17:59,784 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 00:17:59,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:17:59,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1423323116, now seen corresponding path program 6 times [2023-08-27 00:17:59,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:17:59,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356133844] [2023-08-27 00:17:59,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:17:59,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:17:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:18:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:18:00,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:18:00,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356133844] [2023-08-27 00:18:00,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356133844] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:18:00,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253673951] [2023-08-27 00:18:00,158 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 00:18:00,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:18:00,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:18:00,160 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) [2023-08-27 00:18:00,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 00:18:00,255 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-27 00:18:00,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:18:00,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 00:18:00,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:18:00,790 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:18:00,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:18:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:18:01,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253673951] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:18:01,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:18:01,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 22 [2023-08-27 00:18:01,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494280463] [2023-08-27 00:18:01,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:18:01,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 00:18:01,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:18:01,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 00:18:01,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2023-08-27 00:18:01,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 198 [2023-08-27 00:18:01,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 132 transitions, 1434 flow. Second operand has 23 states, 23 states have (on average 69.91304347826087) internal successors, (1608), 23 states have internal predecessors, (1608), 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) [2023-08-27 00:18:01,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:18:01,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 198 [2023-08-27 00:18:01,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:18:05,969 INFO L124 PetriNetUnfolderBase]: 800/1463 cut-off events. [2023-08-27 00:18:05,969 INFO L125 PetriNetUnfolderBase]: For 5715/5715 co-relation queries the response was YES. [2023-08-27 00:18:05,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7948 conditions, 1463 events. 800/1463 cut-off events. For 5715/5715 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7839 event pairs, 38 based on Foata normal form. 62/1525 useless extension candidates. Maximal degree in co-relation 7885. Up to 590 conditions per place. [2023-08-27 00:18:05,981 INFO L140 encePairwiseOnDemand]: 193/198 looper letters, 154 selfloop transitions, 173 changer transitions 0/327 dead transitions. [2023-08-27 00:18:05,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 327 transitions, 3871 flow [2023-08-27 00:18:05,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 00:18:05,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 00:18:05,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1542 transitions. [2023-08-27 00:18:05,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3708513708513709 [2023-08-27 00:18:05,985 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1542 transitions. [2023-08-27 00:18:05,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1542 transitions. [2023-08-27 00:18:05,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:18:05,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1542 transitions. [2023-08-27 00:18:05,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 73.42857142857143) internal successors, (1542), 21 states have internal predecessors, (1542), 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) [2023-08-27 00:18:05,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 198.0) internal successors, (4356), 22 states have internal predecessors, (4356), 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) [2023-08-27 00:18:05,993 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 198.0) internal successors, (4356), 22 states have internal predecessors, (4356), 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) [2023-08-27 00:18:05,994 INFO L175 Difference]: Start difference. First operand has 84 places, 132 transitions, 1434 flow. Second operand 21 states and 1542 transitions. [2023-08-27 00:18:05,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 327 transitions, 3871 flow [2023-08-27 00:18:06,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 327 transitions, 3349 flow, removed 227 selfloop flow, removed 10 redundant places. [2023-08-27 00:18:06,015 INFO L231 Difference]: Finished difference. Result has 99 places, 251 transitions, 3060 flow [2023-08-27 00:18:06,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1175, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3060, PETRI_PLACES=99, PETRI_TRANSITIONS=251} [2023-08-27 00:18:06,016 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 81 predicate places. [2023-08-27 00:18:06,016 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 251 transitions, 3060 flow [2023-08-27 00:18:06,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 69.91304347826087) internal successors, (1608), 23 states have internal predecessors, (1608), 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) [2023-08-27 00:18:06,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:18:06,017 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:18:06,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 00:18:06,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:18:06,221 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 00:18:06,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:18:06,221 INFO L85 PathProgramCache]: Analyzing trace with hash -334694970, now seen corresponding path program 7 times [2023-08-27 00:18:06,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:18:06,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87821521] [2023-08-27 00:18:06,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:18:06,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:18:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:18:06,651 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:18:06,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:18:06,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87821521] [2023-08-27 00:18:06,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87821521] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:18:06,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712902219] [2023-08-27 00:18:06,651 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 00:18:06,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:18:06,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:18:06,658 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) [2023-08-27 00:18:06,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 00:18:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:18:06,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 00:18:06,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:18:07,405 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:18:07,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:18:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:18:08,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712902219] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:18:08,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:18:08,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 23 [2023-08-27 00:18:08,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504030475] [2023-08-27 00:18:08,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:18:08,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 00:18:08,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:18:08,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 00:18:08,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2023-08-27 00:18:08,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 198 [2023-08-27 00:18:08,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 251 transitions, 3060 flow. Second operand has 24 states, 24 states have (on average 69.83333333333333) internal successors, (1676), 24 states have internal predecessors, (1676), 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) [2023-08-27 00:18:08,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:18:08,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 198 [2023-08-27 00:18:08,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:18:25,155 WARN L234 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 82 DAG size of output: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 00:18:29,107 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 [] [2023-08-27 00:18:56,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-27 00:18:58,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:19:02,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:19:03,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:19:03,992 INFO L124 PetriNetUnfolderBase]: 1324/2365 cut-off events. [2023-08-27 00:19:03,992 INFO L125 PetriNetUnfolderBase]: For 14935/14935 co-relation queries the response was YES. [2023-08-27 00:19:03,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14545 conditions, 2365 events. 1324/2365 cut-off events. For 14935/14935 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13613 event pairs, 40 based on Foata normal form. 148/2513 useless extension candidates. Maximal degree in co-relation 13537. Up to 985 conditions per place. [2023-08-27 00:19:04,009 INFO L140 encePairwiseOnDemand]: 193/198 looper letters, 264 selfloop transitions, 394 changer transitions 55/713 dead transitions. [2023-08-27 00:19:04,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 713 transitions, 9452 flow [2023-08-27 00:19:04,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-08-27 00:19:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-08-27 00:19:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4300 transitions. [2023-08-27 00:19:04,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36195286195286197 [2023-08-27 00:19:04,016 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 4300 transitions. [2023-08-27 00:19:04,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 4300 transitions. [2023-08-27 00:19:04,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:19:04,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 4300 transitions. [2023-08-27 00:19:04,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 71.66666666666667) internal successors, (4300), 60 states have internal predecessors, (4300), 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) [2023-08-27 00:19:04,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 198.0) internal successors, (12078), 61 states have internal predecessors, (12078), 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) [2023-08-27 00:19:04,034 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 198.0) internal successors, (12078), 61 states have internal predecessors, (12078), 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) [2023-08-27 00:19:04,035 INFO L175 Difference]: Start difference. First operand has 99 places, 251 transitions, 3060 flow. Second operand 60 states and 4300 transitions. [2023-08-27 00:19:04,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 713 transitions, 9452 flow [2023-08-27 00:19:04,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 713 transitions, 9168 flow, removed 97 selfloop flow, removed 5 redundant places. [2023-08-27 00:19:04,111 INFO L231 Difference]: Finished difference. Result has 181 places, 540 transitions, 8098 flow [2023-08-27 00:19:04,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=2844, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=8098, PETRI_PLACES=181, PETRI_TRANSITIONS=540} [2023-08-27 00:19:04,112 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 163 predicate places. [2023-08-27 00:19:04,112 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 540 transitions, 8098 flow [2023-08-27 00:19:04,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 69.83333333333333) internal successors, (1676), 24 states have internal predecessors, (1676), 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) [2023-08-27 00:19:04,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:19:04,113 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:19:04,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 00:19:04,317 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,SelfDestructingSolverStorable10 [2023-08-27 00:19:04,318 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 00:19:04,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:19:04,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1651472118, now seen corresponding path program 8 times [2023-08-27 00:19:04,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:19:04,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093943152] [2023-08-27 00:19:04,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:19:04,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:19:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:19:04,540 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:19:04,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:19:04,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093943152] [2023-08-27 00:19:04,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093943152] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:19:04,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671188676] [2023-08-27 00:19:04,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:19:04,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:19:04,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:19:04,549 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) [2023-08-27 00:19:04,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 00:19:04,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:19:04,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:19:04,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-27 00:19:04,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:19:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:19:05,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:19:06,764 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:19:06,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671188676] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:19:06,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:19:06,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 23 [2023-08-27 00:19:06,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300672269] [2023-08-27 00:19:06,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:19:06,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 00:19:06,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:19:06,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 00:19:06,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2023-08-27 00:19:06,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 198 [2023-08-27 00:19:06,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 540 transitions, 8098 flow. Second operand has 24 states, 24 states have (on average 69.79166666666667) internal successors, (1675), 24 states have internal predecessors, (1675), 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) [2023-08-27 00:19:06,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:19:06,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 198 [2023-08-27 00:19:06,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:19:08,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:19:19,029 INFO L124 PetriNetUnfolderBase]: 2196/3845 cut-off events. [2023-08-27 00:19:19,029 INFO L125 PetriNetUnfolderBase]: For 29747/29747 co-relation queries the response was YES. [2023-08-27 00:19:19,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28188 conditions, 3845 events. 2196/3845 cut-off events. For 29747/29747 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 23636 event pairs, 6 based on Foata normal form. 68/3913 useless extension candidates. Maximal degree in co-relation 28103. Up to 1506 conditions per place. [2023-08-27 00:19:19,140 INFO L140 encePairwiseOnDemand]: 193/198 looper letters, 484 selfloop transitions, 647 changer transitions 5/1136 dead transitions. [2023-08-27 00:19:19,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 1136 transitions, 19454 flow [2023-08-27 00:19:19,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-27 00:19:19,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-27 00:19:19,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2570 transitions. [2023-08-27 00:19:19,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3708513708513709 [2023-08-27 00:19:19,143 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2570 transitions. [2023-08-27 00:19:19,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2570 transitions. [2023-08-27 00:19:19,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:19:19,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2570 transitions. [2023-08-27 00:19:19,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 73.42857142857143) internal successors, (2570), 35 states have internal predecessors, (2570), 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) [2023-08-27 00:19:19,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 198.0) internal successors, (7128), 36 states have internal predecessors, (7128), 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) [2023-08-27 00:19:19,158 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 198.0) internal successors, (7128), 36 states have internal predecessors, (7128), 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) [2023-08-27 00:19:19,158 INFO L175 Difference]: Start difference. First operand has 181 places, 540 transitions, 8098 flow. Second operand 35 states and 2570 transitions. [2023-08-27 00:19:19,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 1136 transitions, 19454 flow [2023-08-27 00:19:19,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 1136 transitions, 17857 flow, removed 772 selfloop flow, removed 12 redundant places. [2023-08-27 00:19:19,459 INFO L231 Difference]: Finished difference. Result has 210 places, 1018 transitions, 17270 flow [2023-08-27 00:19:19,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=7246, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=17270, PETRI_PLACES=210, PETRI_TRANSITIONS=1018} [2023-08-27 00:19:19,460 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 192 predicate places. [2023-08-27 00:19:19,460 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 1018 transitions, 17270 flow [2023-08-27 00:19:19,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 69.79166666666667) internal successors, (1675), 24 states have internal predecessors, (1675), 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) [2023-08-27 00:19:19,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:19:19,460 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:19:19,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 00:19:19,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:19:19,665 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 00:19:19,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:19:19,666 INFO L85 PathProgramCache]: Analyzing trace with hash 648964304, now seen corresponding path program 9 times [2023-08-27 00:19:19,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:19:19,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054150348] [2023-08-27 00:19:19,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:19:19,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:19:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:19:20,102 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:19:20,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:19:20,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054150348] [2023-08-27 00:19:20,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054150348] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:19:20,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394694505] [2023-08-27 00:19:20,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:19:20,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:19:20,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:19:20,103 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) [2023-08-27 00:19:20,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 00:19:20,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 00:19:20,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:19:20,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 00:19:20,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:19:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:19:20,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:19:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:19:20,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394694505] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:19:20,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:19:20,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 22 [2023-08-27 00:19:20,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44905676] [2023-08-27 00:19:20,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:19:20,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 00:19:20,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:19:20,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 00:19:20,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2023-08-27 00:19:20,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 198 [2023-08-27 00:19:20,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 1018 transitions, 17270 flow. Second operand has 23 states, 23 states have (on average 74.95652173913044) internal successors, (1724), 23 states have internal predecessors, (1724), 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) [2023-08-27 00:19:20,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:19:20,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 198 [2023-08-27 00:19:20,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:19:32,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:19:42,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:19:47,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:19:49,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:19:54,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:19:55,770 INFO L124 PetriNetUnfolderBase]: 2977/5266 cut-off events. [2023-08-27 00:19:55,771 INFO L125 PetriNetUnfolderBase]: For 53228/53228 co-relation queries the response was YES. [2023-08-27 00:19:55,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41204 conditions, 5266 events. 2977/5266 cut-off events. For 53228/53228 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 35051 event pairs, 34 based on Foata normal form. 88/5354 useless extension candidates. Maximal degree in co-relation 40786. Up to 1636 conditions per place. [2023-08-27 00:19:55,818 INFO L140 encePairwiseOnDemand]: 193/198 looper letters, 727 selfloop transitions, 798 changer transitions 19/1544 dead transitions. [2023-08-27 00:19:55,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 1544 transitions, 28227 flow [2023-08-27 00:19:55,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-08-27 00:19:55,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-08-27 00:19:55,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3327 transitions. [2023-08-27 00:19:55,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3907681465821001 [2023-08-27 00:19:55,822 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3327 transitions. [2023-08-27 00:19:55,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3327 transitions. [2023-08-27 00:19:55,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:19:55,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3327 transitions. [2023-08-27 00:19:55,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 77.37209302325581) internal successors, (3327), 43 states have internal predecessors, (3327), 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) [2023-08-27 00:19:55,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 198.0) internal successors, (8712), 44 states have internal predecessors, (8712), 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) [2023-08-27 00:19:55,832 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 198.0) internal successors, (8712), 44 states have internal predecessors, (8712), 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) [2023-08-27 00:19:55,832 INFO L175 Difference]: Start difference. First operand has 210 places, 1018 transitions, 17270 flow. Second operand 43 states and 3327 transitions. [2023-08-27 00:19:55,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 1544 transitions, 28227 flow [2023-08-27 00:19:56,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 1544 transitions, 26844 flow, removed 663 selfloop flow, removed 5 redundant places. [2023-08-27 00:19:56,681 INFO L231 Difference]: Finished difference. Result has 261 places, 1340 transitions, 24635 flow [2023-08-27 00:19:56,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=16005, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1003, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=496, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=24635, PETRI_PLACES=261, PETRI_TRANSITIONS=1340} [2023-08-27 00:19:56,682 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 243 predicate places. [2023-08-27 00:19:56,682 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 1340 transitions, 24635 flow [2023-08-27 00:19:56,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 74.95652173913044) internal successors, (1724), 23 states have internal predecessors, (1724), 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) [2023-08-27 00:19:56,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:19:56,683 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:19:56,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 00:19:56,885 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,SelfDestructingSolverStorable12 [2023-08-27 00:19:56,885 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 00:19:56,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:19:56,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2028956080, now seen corresponding path program 10 times [2023-08-27 00:19:56,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:19:56,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498181763] [2023-08-27 00:19:56,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:19:56,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:19:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:19:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:19:57,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:19:57,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498181763] [2023-08-27 00:19:57,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498181763] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:19:57,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657003188] [2023-08-27 00:19:57,348 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 00:19:57,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:19:57,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:19:57,349 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:19:57,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 00:19:57,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 00:19:57,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:19:57,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 00:19:57,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:19:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 00:19:58,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:19:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 00:19:59,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657003188] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:19:59,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:19:59,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 23 [2023-08-27 00:19:59,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047137338] [2023-08-27 00:19:59,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:19:59,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 00:19:59,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:19:59,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 00:19:59,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2023-08-27 00:19:59,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 198 [2023-08-27 00:19:59,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 1340 transitions, 24635 flow. Second operand has 24 states, 24 states have (on average 70.0) internal successors, (1680), 24 states have internal predecessors, (1680), 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) [2023-08-27 00:19:59,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:19:59,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 198 [2023-08-27 00:19:59,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:20:04,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:20:14,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:20:16,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:20:19,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:20:39,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:20:56,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:21:04,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:21:06,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:21:07,837 INFO L124 PetriNetUnfolderBase]: 6765/11756 cut-off events. [2023-08-27 00:21:07,837 INFO L125 PetriNetUnfolderBase]: For 180207/180207 co-relation queries the response was YES. [2023-08-27 00:21:07,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102488 conditions, 11756 events. 6765/11756 cut-off events. For 180207/180207 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 83633 event pairs, 80 based on Foata normal form. 1426/13182 useless extension candidates. Maximal degree in co-relation 102183. Up to 4251 conditions per place. [2023-08-27 00:21:08,045 INFO L140 encePairwiseOnDemand]: 193/198 looper letters, 1960 selfloop transitions, 1512 changer transitions 65/3537 dead transitions. [2023-08-27 00:21:08,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 3537 transitions, 69911 flow [2023-08-27 00:21:08,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-08-27 00:21:08,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2023-08-27 00:21:08,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 4705 transitions. [2023-08-27 00:21:08,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655788655788656 [2023-08-27 00:21:08,056 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 4705 transitions. [2023-08-27 00:21:08,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 4705 transitions. [2023-08-27 00:21:08,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:21:08,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 4705 transitions. [2023-08-27 00:21:08,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 72.38461538461539) internal successors, (4705), 65 states have internal predecessors, (4705), 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) [2023-08-27 00:21:08,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 198.0) internal successors, (13068), 66 states have internal predecessors, (13068), 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) [2023-08-27 00:21:08,081 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 198.0) internal successors, (13068), 66 states have internal predecessors, (13068), 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) [2023-08-27 00:21:08,082 INFO L175 Difference]: Start difference. First operand has 261 places, 1340 transitions, 24635 flow. Second operand 65 states and 4705 transitions. [2023-08-27 00:21:08,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 3537 transitions, 69911 flow [2023-08-27 00:21:11,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 3537 transitions, 65051 flow, removed 1623 selfloop flow, removed 8 redundant places. [2023-08-27 00:21:11,158 INFO L231 Difference]: Finished difference. Result has 339 places, 2338 transitions, 45420 flow [2023-08-27 00:21:11,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=22814, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=764, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=45420, PETRI_PLACES=339, PETRI_TRANSITIONS=2338} [2023-08-27 00:21:11,159 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 321 predicate places. [2023-08-27 00:21:11,159 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 2338 transitions, 45420 flow [2023-08-27 00:21:11,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 70.0) internal successors, (1680), 24 states have internal predecessors, (1680), 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) [2023-08-27 00:21:11,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:21:11,160 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:21:11,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-27 00:21:11,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 00:21:11,364 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 00:21:11,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:21:11,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1321025518, now seen corresponding path program 11 times [2023-08-27 00:21:11,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:21:11,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712161863] [2023-08-27 00:21:11,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:11,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:21:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:21:12,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:21:12,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712161863] [2023-08-27 00:21:12,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712161863] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:21:12,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020443686] [2023-08-27 00:21:12,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 00:21:12,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:21:12,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:21:12,001 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:21:12,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 00:21:13,290 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-08-27 00:21:13,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:21:13,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 00:21:13,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:21:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:21:15,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:21:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 78 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:21:18,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020443686] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:21:18,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:21:18,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 54 [2023-08-27 00:21:18,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745898841] [2023-08-27 00:21:18,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:21:18,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-08-27 00:21:18,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:21:18,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-08-27 00:21:18,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=758, Invalid=2212, Unknown=0, NotChecked=0, Total=2970 [2023-08-27 00:21:18,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 198 [2023-08-27 00:21:18,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 2338 transitions, 45420 flow. Second operand has 55 states, 55 states have (on average 69.45454545454545) internal successors, (3820), 55 states have internal predecessors, (3820), 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) [2023-08-27 00:21:18,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:21:18,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 198 [2023-08-27 00:21:18,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:21:50,388 INFO L124 PetriNetUnfolderBase]: 9725/17108 cut-off events. [2023-08-27 00:21:50,388 INFO L125 PetriNetUnfolderBase]: For 280889/280889 co-relation queries the response was YES. [2023-08-27 00:21:50,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153109 conditions, 17108 events. 9725/17108 cut-off events. For 280889/280889 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 128815 event pairs, 16 based on Foata normal form. 820/17928 useless extension candidates. Maximal degree in co-relation 152937. Up to 8724 conditions per place. [2023-08-27 00:21:50,594 INFO L140 encePairwiseOnDemand]: 193/198 looper letters, 2423 selfloop transitions, 1447 changer transitions 0/3870 dead transitions. [2023-08-27 00:21:50,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 3870 transitions, 81124 flow [2023-08-27 00:21:50,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-08-27 00:21:50,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-08-27 00:21:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 4182 transitions. [2023-08-27 00:21:50,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37054758107389685 [2023-08-27 00:21:50,598 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 4182 transitions. [2023-08-27 00:21:50,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 4182 transitions. [2023-08-27 00:21:50,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:21:50,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 4182 transitions. [2023-08-27 00:21:50,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 73.36842105263158) internal successors, (4182), 57 states have internal predecessors, (4182), 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) [2023-08-27 00:21:50,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 198.0) internal successors, (11484), 58 states have internal predecessors, (11484), 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) [2023-08-27 00:21:50,609 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 198.0) internal successors, (11484), 58 states have internal predecessors, (11484), 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) [2023-08-27 00:21:50,609 INFO L175 Difference]: Start difference. First operand has 339 places, 2338 transitions, 45420 flow. Second operand 57 states and 4182 transitions. [2023-08-27 00:21:50,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 3870 transitions, 81124 flow [2023-08-27 00:21:57,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 3870 transitions, 75771 flow, removed 2140 selfloop flow, removed 13 redundant places. [2023-08-27 00:21:57,756 INFO L231 Difference]: Finished difference. Result has 403 places, 3222 transitions, 63205 flow [2023-08-27 00:21:57,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=41414, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=631, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=63205, PETRI_PLACES=403, PETRI_TRANSITIONS=3222} [2023-08-27 00:21:57,757 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 385 predicate places. [2023-08-27 00:21:57,757 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 3222 transitions, 63205 flow [2023-08-27 00:21:57,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 69.45454545454545) internal successors, (3820), 55 states have internal predecessors, (3820), 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) [2023-08-27 00:21:57,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:21:57,758 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:21:57,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-27 00:21:57,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 00:21:57,963 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 00:21:57,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:21:57,963 INFO L85 PathProgramCache]: Analyzing trace with hash -618491210, now seen corresponding path program 12 times [2023-08-27 00:21:57,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:21:57,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469269712] [2023-08-27 00:21:57,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:57,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:21:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:58,403 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-27 00:21:58,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:21:58,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469269712] [2023-08-27 00:21:58,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469269712] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:21:58,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848304794] [2023-08-27 00:21:58,403 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 00:21:58,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:21:58,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:21:58,404 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:21:58,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 00:21:58,902 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-08-27 00:21:58,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:21:58,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 00:21:58,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:21:59,491 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 51 proven. 34 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-27 00:21:59,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:22:02,980 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 51 proven. 34 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-27 00:22:02,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848304794] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:22:02,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:22:02,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 29 [2023-08-27 00:22:02,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944267389] [2023-08-27 00:22:02,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:22:02,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 00:22:02,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:22:02,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 00:22:02,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2023-08-27 00:22:02,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 198 [2023-08-27 00:22:02,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 3222 transitions, 63205 flow. Second operand has 30 states, 30 states have (on average 74.63333333333334) internal successors, (2239), 30 states have internal predecessors, (2239), 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) [2023-08-27 00:22:02,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:22:02,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 198 [2023-08-27 00:22:02,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:22:29,892 INFO L124 PetriNetUnfolderBase]: 14757/26764 cut-off events. [2023-08-27 00:22:29,892 INFO L125 PetriNetUnfolderBase]: For 552105/552105 co-relation queries the response was YES. [2023-08-27 00:22:30,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247221 conditions, 26764 events. 14757/26764 cut-off events. For 552105/552105 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 219446 event pairs, 66 based on Foata normal form. 106/26870 useless extension candidates. Maximal degree in co-relation 246812. Up to 8189 conditions per place. [2023-08-27 00:22:30,839 INFO L140 encePairwiseOnDemand]: 193/198 looper letters, 2112 selfloop transitions, 2881 changer transitions 206/5199 dead transitions. [2023-08-27 00:22:30,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 5199 transitions, 111118 flow [2023-08-27 00:22:30,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-27 00:22:30,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-27 00:22:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2953 transitions. [2023-08-27 00:22:30,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39247740563530037 [2023-08-27 00:22:30,842 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2953 transitions. [2023-08-27 00:22:30,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2953 transitions. [2023-08-27 00:22:30,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:22:30,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2953 transitions. [2023-08-27 00:22:30,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 77.71052631578948) internal successors, (2953), 38 states have internal predecessors, (2953), 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) [2023-08-27 00:22:30,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 198.0) internal successors, (7722), 39 states have internal predecessors, (7722), 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) [2023-08-27 00:22:30,849 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 198.0) internal successors, (7722), 39 states have internal predecessors, (7722), 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) [2023-08-27 00:22:30,849 INFO L175 Difference]: Start difference. First operand has 403 places, 3222 transitions, 63205 flow. Second operand 38 states and 2953 transitions. [2023-08-27 00:22:30,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 5199 transitions, 111118 flow [2023-08-27 00:22:53,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 5199 transitions, 109585 flow, removed 746 selfloop flow, removed 7 redundant places. [2023-08-27 00:22:53,254 INFO L231 Difference]: Finished difference. Result has 447 places, 4260 transitions, 92880 flow [2023-08-27 00:22:53,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=62191, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1964, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1059, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=92880, PETRI_PLACES=447, PETRI_TRANSITIONS=4260} [2023-08-27 00:22:53,257 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 429 predicate places. [2023-08-27 00:22:53,257 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 4260 transitions, 92880 flow [2023-08-27 00:22:53,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 74.63333333333334) internal successors, (2239), 30 states have internal predecessors, (2239), 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) [2023-08-27 00:22:53,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:22:53,258 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:22:53,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-27 00:22:53,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 00:22:53,458 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 00:22:53,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:22:53,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1291525406, now seen corresponding path program 13 times [2023-08-27 00:22:53,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:22:53,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155414699] [2023-08-27 00:22:53,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:22:53,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:22:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:22:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 24 proven. 55 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-27 00:22:54,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:22:54,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155414699] [2023-08-27 00:22:54,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155414699] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:22:54,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192712701] [2023-08-27 00:22:54,016 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 00:22:54,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:22:54,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:22:54,017 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:22:54,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 00:22:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:22:55,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 00:22:55,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:22:57,207 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 24 proven. 75 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:22:57,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:23:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 54 proven. 45 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:23:14,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192712701] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:23:14,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:23:14,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 16] total 40 [2023-08-27 00:23:14,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402757286] [2023-08-27 00:23:14,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:23:14,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-27 00:23:14,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:23:14,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-27 00:23:14,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1218, Unknown=1, NotChecked=0, Total=1640 [2023-08-27 00:23:14,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 198 [2023-08-27 00:23:14,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 4260 transitions, 92880 flow. Second operand has 41 states, 41 states have (on average 69.53658536585365) internal successors, (2851), 41 states have internal predecessors, (2851), 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) [2023-08-27 00:23:14,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:23:14,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 198 [2023-08-27 00:23:14,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:23:24,562 WARN L234 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 77 DAG size of output: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 00:23:48,791 WARN L234 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 64 DAG size of output: 25 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 00:24:04,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:24:06,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:24:08,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:24:32,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:24:34,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:24:35,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:25:03,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:25:22,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:25:55,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:25:59,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:26:12,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:26:14,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:26:16,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:26:18,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:26:36,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:27:20,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-27 00:27:23,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:27:30,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:28:06,751 WARN L234 SmtUtils]: Spent 15.31s on a formula simplification. DAG size of input: 92 DAG size of output: 36 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 00:28:26,977 WARN L234 SmtUtils]: Spent 11.28s on a formula simplification. DAG size of input: 73 DAG size of output: 25 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 00:28:28,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:28:30,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:28:59,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-27 00:29:02,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:30:13,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:30:15,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:30:17,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:30:48,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:30:55,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:31:34,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-08-27 00:32:15,663 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 00:32:15,693 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 [2023-08-27 00:32:16,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 00:32:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-08-27 00:32:16,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2023-08-27 00:32:16,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 00:32:16,873 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-27 00:32:16,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-27 00:32:16,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-27 00:32:16,874 INFO L445 BasicCegarLoop]: Path program histogram: [13, 2, 1, 1] [2023-08-27 00:32:16,876 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 00:32:16,876 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 00:32:16,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 12:32:16 BasicIcfg [2023-08-27 00:32:16,878 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 00:32:16,878 INFO L158 Benchmark]: Toolchain (without parser) took 871242.36ms. Allocated memory was 358.6MB in the beginning and 2.9GB in the end (delta: 2.5GB). Free memory was 334.1MB in the beginning and 933.5MB in the end (delta: -599.5MB). Peak memory consumption was 1.9GB. Max. memory is 16.0GB. [2023-08-27 00:32:16,878 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory is still 335.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 00:32:16,878 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.76ms. Allocated memory is still 358.6MB. Free memory was 334.1MB in the beginning and 321.8MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 00:32:16,878 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.20ms. Allocated memory is still 358.6MB. Free memory was 321.8MB in the beginning and 320.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 00:32:16,879 INFO L158 Benchmark]: Boogie Preprocessor took 29.30ms. Allocated memory is still 358.6MB. Free memory was 320.2MB in the beginning and 318.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 00:32:16,879 INFO L158 Benchmark]: RCFGBuilder took 333.75ms. Allocated memory is still 358.6MB. Free memory was 318.7MB in the beginning and 304.5MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 00:32:16,879 INFO L158 Benchmark]: TraceAbstraction took 870635.61ms. Allocated memory was 358.6MB in the beginning and 2.9GB in the end (delta: 2.5GB). Free memory was 304.0MB in the beginning and 933.5MB in the end (delta: -629.5MB). Peak memory consumption was 1.9GB. Max. memory is 16.0GB. [2023-08-27 00:32:16,880 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory is still 335.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 198.76ms. Allocated memory is still 358.6MB. Free memory was 334.1MB in the beginning and 321.8MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.20ms. Allocated memory is still 358.6MB. Free memory was 321.8MB in the beginning and 320.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.30ms. Allocated memory is still 358.6MB. Free memory was 320.2MB in the beginning and 318.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 333.75ms. Allocated memory is still 358.6MB. Free memory was 318.7MB in the beginning and 304.5MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 870635.61ms. Allocated memory was 358.6MB in the beginning and 2.9GB in the end (delta: 2.5GB). Free memory was 304.0MB in the beginning and 933.5MB in the end (delta: -629.5MB). Peak memory consumption was 1.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 92 PlacesBefore, 18 PlacesAfterwards, 93 TransitionsBefore, 13 TransitionsAfterwards, 728 CoEnabledTransitionPairs, 7 FixpointIterations, 51 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 10 ConcurrentYvCompositions, 6 ChoiceCompositions, 94 TotalNumberOfCompositions, 804 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 768, independent: 761, independent conditional: 0, independent unconditional: 761, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 399, independent: 392, independent conditional: 0, independent unconditional: 392, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 768, independent: 369, independent conditional: 0, independent unconditional: 369, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 399, unknown conditional: 0, unknown unconditional: 399] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 121 locations, 3 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: 870.6s, OverallIterations: 17, TraceHistogramMax: 13, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 815.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 30 mSolverCounterUnknown, 2509 SdHoareTripleChecker+Valid, 137.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2509 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 135.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 512 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11103 IncrementalHoareTripleChecker+Invalid, 11645 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 512 mSolverCounterUnsat, 0 mSDtfsCounter, 11103 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 942 GetRequests, 326 SyntacticMatches, 13 SemanticMatches, 602 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10301 ImplicationChecksByTransitivity, 635.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92880occurred in iteration=16, InterpolantAutomatonStates: 398, 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: 0.1s SsaConstructionTime, 4.5s SatisfiabilityAnalysisTime, 44.5s InterpolantComputationTime, 562 NumberOfCodeBlocks, 560 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 780 ConstructedInterpolants, 6 QuantifiedInterpolants, 14884 SizeOfPredicates, 183 NumberOfNonLiveVariables, 1724 ConjunctsInSsa, 216 ConjunctsInUnsatCore, 45 InterpolantComputations, 3 PerfectInterpolantSequences, 469/1300 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 [2023-08-27 00:32:16,894 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process