/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 -i ../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 03:43:24,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 03:43:24,153 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 03:43:24,158 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 03:43:24,159 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 03:43:24,188 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 03:43:24,189 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 03:43:24,189 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 03:43:24,190 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 03:43:24,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 03:43:24,194 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 03:43:24,194 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 03:43:24,194 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 03:43:24,195 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 03:43:24,195 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 03:43:24,195 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 03:43:24,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 03:43:24,196 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 03:43:24,196 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 03:43:24,196 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 03:43:24,196 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 03:43:24,197 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 03:43:24,197 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 03:43:24,198 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 03:43:24,198 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 03:43:24,198 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 03:43:24,198 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 03:43:24,199 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 03:43:24,199 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 03:43:24,199 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 03:43:24,200 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 03:43:24,200 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 03:43:24,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 03:43:24,200 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 03:43:24,201 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 03:43:24,201 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 03:43:24,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 03:43:24,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 03:43:24,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 03:43:24,534 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 03:43:24,534 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 03:43:24,535 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2023-08-24 03:43:25,717 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 03:43:25,916 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 03:43:25,916 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2023-08-24 03:43:25,923 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b6a47b66/4430f66caae54fc9a1af17d48d00e3f5/FLAGde3a747cf [2023-08-24 03:43:26,274 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b6a47b66/4430f66caae54fc9a1af17d48d00e3f5 [2023-08-24 03:43:26,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 03:43:26,277 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 03:43:26,278 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 03:43:26,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 03:43:26,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 03:43:26,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 03:43:26" (1/1) ... [2023-08-24 03:43:26,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c36dc54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:43:26, skipping insertion in model container [2023-08-24 03:43:26,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 03:43:26" (1/1) ... [2023-08-24 03:43:26,299 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 03:43:26,480 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c[2957,2970] [2023-08-24 03:43:26,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 03:43:26,495 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 03:43:26,536 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c[2957,2970] [2023-08-24 03:43:26,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 03:43:26,543 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 03:43:26,543 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 03:43:26,550 INFO L206 MainTranslator]: Completed translation [2023-08-24 03:43:26,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:43:26 WrapperNode [2023-08-24 03:43:26,551 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 03:43:26,552 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 03:43:26,552 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 03:43:26,552 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 03:43:26,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:43:26" (1/1) ... [2023-08-24 03:43:26,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:43:26" (1/1) ... [2023-08-24 03:43:26,598 INFO L138 Inliner]: procedures = 22, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2023-08-24 03:43:26,599 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 03:43:26,600 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 03:43:26,600 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 03:43:26,600 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 03:43:26,607 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:43:26" (1/1) ... [2023-08-24 03:43:26,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:43:26" (1/1) ... [2023-08-24 03:43:26,620 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:43:26" (1/1) ... [2023-08-24 03:43:26,621 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:43:26" (1/1) ... [2023-08-24 03:43:26,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:43:26" (1/1) ... [2023-08-24 03:43:26,628 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:43:26" (1/1) ... [2023-08-24 03:43:26,629 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:43:26" (1/1) ... [2023-08-24 03:43:26,630 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:43:26" (1/1) ... [2023-08-24 03:43:26,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 03:43:26,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 03:43:26,632 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 03:43:26,632 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 03:43:26,643 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:43:26" (1/1) ... [2023-08-24 03:43:26,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 03:43:26,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:43:26,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 03:43:26,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 03:43:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 03:43:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 03:43:26,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 03:43:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 03:43:26,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 03:43:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 03:43:26,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 03:43:26,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 03:43:26,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 03:43:26,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 03:43:26,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 03:43:26,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 03:43:26,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 03:43:26,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 03:43:26,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 03:43:26,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 03:43:26,720 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 03:43:26,807 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 03:43:26,808 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 03:43:27,018 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 03:43:27,068 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 03:43:27,069 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-24 03:43:27,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 03:43:27 BoogieIcfgContainer [2023-08-24 03:43:27,071 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 03:43:27,073 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 03:43:27,073 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 03:43:27,075 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 03:43:27,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 03:43:26" (1/3) ... [2023-08-24 03:43:27,076 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1113e452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 03:43:27, skipping insertion in model container [2023-08-24 03:43:27,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:43:26" (2/3) ... [2023-08-24 03:43:27,076 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1113e452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 03:43:27, skipping insertion in model container [2023-08-24 03:43:27,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 03:43:27" (3/3) ... [2023-08-24 03:43:27,078 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2023-08-24 03:43:27,092 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 03:43:27,092 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 03:43:27,092 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 03:43:27,162 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 03:43:27,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 111 transitions, 246 flow [2023-08-24 03:43:27,240 INFO L124 PetriNetUnfolderBase]: 8/108 cut-off events. [2023-08-24 03:43:27,241 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 03:43:27,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 108 events. 8/108 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-08-24 03:43:27,246 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 111 transitions, 246 flow [2023-08-24 03:43:27,249 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 98 transitions, 214 flow [2023-08-24 03:43:27,252 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 03:43:27,259 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 98 transitions, 214 flow [2023-08-24 03:43:27,261 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 98 transitions, 214 flow [2023-08-24 03:43:27,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 98 transitions, 214 flow [2023-08-24 03:43:27,305 INFO L124 PetriNetUnfolderBase]: 8/98 cut-off events. [2023-08-24 03:43:27,305 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 03:43:27,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 98 events. 8/98 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-08-24 03:43:27,307 INFO L119 LiptonReduction]: Number of co-enabled transitions 1010 [2023-08-24 03:43:30,250 INFO L134 LiptonReduction]: Checked pairs total: 1725 [2023-08-24 03:43:30,250 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-08-24 03:43:30,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 03:43:30,266 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;@102f4227, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 03:43:30,266 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 03:43:30,272 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 03:43:30,272 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2023-08-24 03:43:30,272 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 03:43:30,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:43:30,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:43:30,273 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:43:30,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:43:30,277 INFO L85 PathProgramCache]: Analyzing trace with hash -807744710, now seen corresponding path program 1 times [2023-08-24 03:43:30,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:43:30,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160530593] [2023-08-24 03:43:30,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:43:30,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:43:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:43:31,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:43:31,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:43:31,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160530593] [2023-08-24 03:43:31,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160530593] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 03:43:31,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 03:43:31,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 03:43:31,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127534081] [2023-08-24 03:43:31,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:43:31,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 03:43:31,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:43:31,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 03:43:31,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 03:43:31,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 195 [2023-08-24 03:43:31,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:31,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:43:31,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 195 [2023-08-24 03:43:31,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:43:31,360 INFO L124 PetriNetUnfolderBase]: 767/1086 cut-off events. [2023-08-24 03:43:31,360 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-08-24 03:43:31,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2257 conditions, 1086 events. 767/1086 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3950 event pairs, 109 based on Foata normal form. 0/841 useless extension candidates. Maximal degree in co-relation 2171. Up to 681 conditions per place. [2023-08-24 03:43:31,374 INFO L140 encePairwiseOnDemand]: 189/195 looper letters, 50 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2023-08-24 03:43:31,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 58 transitions, 260 flow [2023-08-24 03:43:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 03:43:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 03:43:31,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 474 transitions. [2023-08-24 03:43:31,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48615384615384616 [2023-08-24 03:43:31,388 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 474 transitions. [2023-08-24 03:43:31,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 474 transitions. [2023-08-24 03:43:31,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:43:31,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 474 transitions. [2023-08-24 03:43:31,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:31,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:31,400 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:31,401 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 68 flow. Second operand 5 states and 474 transitions. [2023-08-24 03:43:31,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 58 transitions, 260 flow [2023-08-24 03:43:31,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 58 transitions, 240 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 03:43:31,406 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 108 flow [2023-08-24 03:43:31,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-08-24 03:43:31,410 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2023-08-24 03:43:31,410 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 108 flow [2023-08-24 03:43:31,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:31,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:43:31,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:43:31,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 03:43:31,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:43:31,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:43:31,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1820244098, now seen corresponding path program 1 times [2023-08-24 03:43:31,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:43:31,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893305599] [2023-08-24 03:43:31,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:43:31,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:43:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:43:31,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:43:31,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:43:31,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893305599] [2023-08-24 03:43:31,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893305599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 03:43:31,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 03:43:31,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 03:43:31,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357206904] [2023-08-24 03:43:31,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:43:31,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 03:43:31,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:43:31,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 03:43:31,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 03:43:31,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 195 [2023-08-24 03:43:31,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:31,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:43:31,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 195 [2023-08-24 03:43:31,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:43:31,918 INFO L124 PetriNetUnfolderBase]: 997/1420 cut-off events. [2023-08-24 03:43:31,918 INFO L125 PetriNetUnfolderBase]: For 684/684 co-relation queries the response was YES. [2023-08-24 03:43:31,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3697 conditions, 1420 events. 997/1420 cut-off events. For 684/684 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5321 event pairs, 149 based on Foata normal form. 48/1468 useless extension candidates. Maximal degree in co-relation 1963. Up to 672 conditions per place. [2023-08-24 03:43:31,927 INFO L140 encePairwiseOnDemand]: 189/195 looper letters, 59 selfloop transitions, 10 changer transitions 2/71 dead transitions. [2023-08-24 03:43:31,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 71 transitions, 373 flow [2023-08-24 03:43:31,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 03:43:31,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 03:43:31,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 564 transitions. [2023-08-24 03:43:31,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48205128205128206 [2023-08-24 03:43:31,934 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 564 transitions. [2023-08-24 03:43:31,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 564 transitions. [2023-08-24 03:43:31,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:43:31,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 564 transitions. [2023-08-24 03:43:31,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:31,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:31,940 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:31,940 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 108 flow. Second operand 6 states and 564 transitions. [2023-08-24 03:43:31,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 71 transitions, 373 flow [2023-08-24 03:43:31,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 71 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 03:43:31,946 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 189 flow [2023-08-24 03:43:31,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-08-24 03:43:31,948 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2023-08-24 03:43:31,948 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 189 flow [2023-08-24 03:43:31,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:31,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:43:31,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:43:31,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 03:43:31,949 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:43:31,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:43:31,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1826456622, now seen corresponding path program 2 times [2023-08-24 03:43:31,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:43:31,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304566819] [2023-08-24 03:43:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:43:31,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:43:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:43:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:43:32,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:43:32,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304566819] [2023-08-24 03:43:32,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304566819] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 03:43:32,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 03:43:32,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 03:43:32,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250564461] [2023-08-24 03:43:32,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:43:32,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 03:43:32,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:43:32,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 03:43:32,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 03:43:32,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 195 [2023-08-24 03:43:32,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:32,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:43:32,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 195 [2023-08-24 03:43:32,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:43:32,544 INFO L124 PetriNetUnfolderBase]: 1327/1918 cut-off events. [2023-08-24 03:43:32,545 INFO L125 PetriNetUnfolderBase]: For 3235/3235 co-relation queries the response was YES. [2023-08-24 03:43:32,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6078 conditions, 1918 events. 1327/1918 cut-off events. For 3235/3235 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7964 event pairs, 281 based on Foata normal form. 16/1934 useless extension candidates. Maximal degree in co-relation 3318. Up to 1027 conditions per place. [2023-08-24 03:43:32,556 INFO L140 encePairwiseOnDemand]: 188/195 looper letters, 80 selfloop transitions, 22 changer transitions 10/112 dead transitions. [2023-08-24 03:43:32,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 112 transitions, 819 flow [2023-08-24 03:43:32,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 03:43:32,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 03:43:32,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 559 transitions. [2023-08-24 03:43:32,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2023-08-24 03:43:32,558 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 559 transitions. [2023-08-24 03:43:32,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 559 transitions. [2023-08-24 03:43:32,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:43:32,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 559 transitions. [2023-08-24 03:43:32,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.16666666666667) internal successors, (559), 6 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:32,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:32,563 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:32,563 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 189 flow. Second operand 6 states and 559 transitions. [2023-08-24 03:43:32,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 112 transitions, 819 flow [2023-08-24 03:43:32,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 112 transitions, 818 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 03:43:32,573 INFO L231 Difference]: Finished difference. Result has 47 places, 56 transitions, 397 flow [2023-08-24 03:43:32,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=397, PETRI_PLACES=47, PETRI_TRANSITIONS=56} [2023-08-24 03:43:32,574 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2023-08-24 03:43:32,574 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 56 transitions, 397 flow [2023-08-24 03:43:32,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:32,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:43:32,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:43:32,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 03:43:32,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:43:32,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:43:32,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1205848806, now seen corresponding path program 3 times [2023-08-24 03:43:32,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:43:32,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061535093] [2023-08-24 03:43:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:43:32,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:43:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:43:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:43:32,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:43:32,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061535093] [2023-08-24 03:43:32,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061535093] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:43:32,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531331747] [2023-08-24 03:43:32,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 03:43:32,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:43:32,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:43:32,865 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:43:32,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 03:43:32,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-24 03:43:32,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:43:32,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 03:43:32,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:43:33,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:43:33,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 03:43:33,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531331747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 03:43:33,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 03:43:33,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-08-24 03:43:33,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293807739] [2023-08-24 03:43:33,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:43:33,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 03:43:33,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:43:33,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 03:43:33,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 03:43:33,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 195 [2023-08-24 03:43:33,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 56 transitions, 397 flow. Second operand has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:33,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:43:33,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 195 [2023-08-24 03:43:33,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:43:33,406 INFO L124 PetriNetUnfolderBase]: 1893/2749 cut-off events. [2023-08-24 03:43:33,406 INFO L125 PetriNetUnfolderBase]: For 7782/8005 co-relation queries the response was YES. [2023-08-24 03:43:33,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10958 conditions, 2749 events. 1893/2749 cut-off events. For 7782/8005 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 13309 event pairs, 177 based on Foata normal form. 257/2968 useless extension candidates. Maximal degree in co-relation 6508. Up to 1507 conditions per place. [2023-08-24 03:43:33,430 INFO L140 encePairwiseOnDemand]: 189/195 looper letters, 122 selfloop transitions, 16 changer transitions 0/141 dead transitions. [2023-08-24 03:43:33,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 141 transitions, 1320 flow [2023-08-24 03:43:33,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 03:43:33,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 03:43:33,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 503 transitions. [2023-08-24 03:43:33,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158974358974359 [2023-08-24 03:43:33,433 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 503 transitions. [2023-08-24 03:43:33,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 503 transitions. [2023-08-24 03:43:33,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:43:33,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 503 transitions. [2023-08-24 03:43:33,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:33,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:33,438 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:33,438 INFO L175 Difference]: Start difference. First operand has 47 places, 56 transitions, 397 flow. Second operand 5 states and 503 transitions. [2023-08-24 03:43:33,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 141 transitions, 1320 flow [2023-08-24 03:43:33,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 141 transitions, 1320 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 03:43:33,452 INFO L231 Difference]: Finished difference. Result has 53 places, 69 transitions, 579 flow [2023-08-24 03:43:33,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=579, PETRI_PLACES=53, PETRI_TRANSITIONS=69} [2023-08-24 03:43:33,453 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2023-08-24 03:43:33,453 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 69 transitions, 579 flow [2023-08-24 03:43:33,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:33,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:43:33,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:43:33,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 03:43:33,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:43:33,665 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:43:33,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:43:33,666 INFO L85 PathProgramCache]: Analyzing trace with hash 582364476, now seen corresponding path program 1 times [2023-08-24 03:43:33,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:43:33,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128744414] [2023-08-24 03:43:33,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:43:33,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:43:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:43:35,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:43:35,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:43:35,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128744414] [2023-08-24 03:43:35,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128744414] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:43:35,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430872227] [2023-08-24 03:43:35,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:43:35,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:43:35,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:43:35,013 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:43:35,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 03:43:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:43:35,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-24 03:43:35,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:43:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:43:35,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:43:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:43:37,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430872227] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:43:37,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:43:37,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-24 03:43:37,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899668744] [2023-08-24 03:43:37,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:43:37,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-24 03:43:37,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:43:37,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-24 03:43:37,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2023-08-24 03:43:37,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 195 [2023-08-24 03:43:37,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 69 transitions, 579 flow. Second operand has 22 states, 22 states have (on average 74.86363636363636) internal successors, (1647), 22 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:37,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:43:37,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 195 [2023-08-24 03:43:37,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:43:50,466 INFO L124 PetriNetUnfolderBase]: 9961/14297 cut-off events. [2023-08-24 03:43:50,466 INFO L125 PetriNetUnfolderBase]: For 48654/48654 co-relation queries the response was YES. [2023-08-24 03:43:50,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62631 conditions, 14297 events. 9961/14297 cut-off events. For 48654/48654 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 80101 event pairs, 358 based on Foata normal form. 17/14314 useless extension candidates. Maximal degree in co-relation 29726. Up to 3559 conditions per place. [2023-08-24 03:43:50,551 INFO L140 encePairwiseOnDemand]: 186/195 looper letters, 357 selfloop transitions, 428 changer transitions 218/1003 dead transitions. [2023-08-24 03:43:50,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 1003 transitions, 9772 flow [2023-08-24 03:43:50,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-08-24 03:43:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-08-24 03:43:50,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 4542 transitions. [2023-08-24 03:43:50,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4234965034965035 [2023-08-24 03:43:50,564 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 4542 transitions. [2023-08-24 03:43:50,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 4542 transitions. [2023-08-24 03:43:50,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:43:50,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 4542 transitions. [2023-08-24 03:43:50,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 82.58181818181818) internal successors, (4542), 55 states have internal predecessors, (4542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:50,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 195.0) internal successors, (10920), 56 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:50,596 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 195.0) internal successors, (10920), 56 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:50,597 INFO L175 Difference]: Start difference. First operand has 53 places, 69 transitions, 579 flow. Second operand 55 states and 4542 transitions. [2023-08-24 03:43:50,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 1003 transitions, 9772 flow [2023-08-24 03:43:50,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 1003 transitions, 9730 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 03:43:50,670 INFO L231 Difference]: Finished difference. Result has 120 places, 516 transitions, 6333 flow [2023-08-24 03:43:50,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=6333, PETRI_PLACES=120, PETRI_TRANSITIONS=516} [2023-08-24 03:43:50,672 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 88 predicate places. [2023-08-24 03:43:50,674 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 516 transitions, 6333 flow [2023-08-24 03:43:50,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 74.86363636363636) internal successors, (1647), 22 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:50,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:43:50,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:43:50,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 03:43:50,881 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 [2023-08-24 03:43:50,881 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:43:50,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:43:50,882 INFO L85 PathProgramCache]: Analyzing trace with hash -508209307, now seen corresponding path program 1 times [2023-08-24 03:43:50,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:43:50,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108787468] [2023-08-24 03:43:50,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:43:50,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:43:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:43:51,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:43:51,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:43:51,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108787468] [2023-08-24 03:43:51,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108787468] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:43:51,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038484808] [2023-08-24 03:43:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:43:51,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:43:51,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:43:51,346 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:43:51,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 03:43:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:43:51,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-24 03:43:51,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:43:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:43:51,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:43:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:43:51,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038484808] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:43:51,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:43:51,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 5] total 14 [2023-08-24 03:43:51,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698813969] [2023-08-24 03:43:51,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:43:51,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 03:43:51,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:43:51,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 03:43:51,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-08-24 03:43:51,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 195 [2023-08-24 03:43:51,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 516 transitions, 6333 flow. Second operand has 14 states, 14 states have (on average 80.64285714285714) internal successors, (1129), 14 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:51,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:43:51,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 195 [2023-08-24 03:43:51,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:43:53,622 INFO L124 PetriNetUnfolderBase]: 9010/12765 cut-off events. [2023-08-24 03:43:53,622 INFO L125 PetriNetUnfolderBase]: For 63887/63887 co-relation queries the response was YES. [2023-08-24 03:43:53,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61827 conditions, 12765 events. 9010/12765 cut-off events. For 63887/63887 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 69410 event pairs, 105 based on Foata normal form. 914/13679 useless extension candidates. Maximal degree in co-relation 61701. Up to 4649 conditions per place. [2023-08-24 03:43:53,705 INFO L140 encePairwiseOnDemand]: 186/195 looper letters, 683 selfloop transitions, 304 changer transitions 0/987 dead transitions. [2023-08-24 03:43:53,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 987 transitions, 13183 flow [2023-08-24 03:43:53,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 03:43:53,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 03:43:53,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1131 transitions. [2023-08-24 03:43:53,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2023-08-24 03:43:53,709 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1131 transitions. [2023-08-24 03:43:53,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1131 transitions. [2023-08-24 03:43:53,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:43:53,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1131 transitions. [2023-08-24 03:43:53,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.0) internal successors, (1131), 13 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:53,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:53,716 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:53,717 INFO L175 Difference]: Start difference. First operand has 120 places, 516 transitions, 6333 flow. Second operand 13 states and 1131 transitions. [2023-08-24 03:43:53,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 987 transitions, 13183 flow [2023-08-24 03:43:53,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 987 transitions, 11004 flow, removed 1085 selfloop flow, removed 11 redundant places. [2023-08-24 03:43:53,933 INFO L231 Difference]: Finished difference. Result has 115 places, 543 transitions, 6488 flow [2023-08-24 03:43:53,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=3834, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6488, PETRI_PLACES=115, PETRI_TRANSITIONS=543} [2023-08-24 03:43:53,934 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 83 predicate places. [2023-08-24 03:43:53,935 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 543 transitions, 6488 flow [2023-08-24 03:43:53,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 80.64285714285714) internal successors, (1129), 14 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:53,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:43:53,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:43:53,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 03:43:54,150 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 [2023-08-24 03:43:54,151 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:43:54,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:43:54,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1579273131, now seen corresponding path program 2 times [2023-08-24 03:43:54,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:43:54,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531229581] [2023-08-24 03:43:54,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:43:54,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:43:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:43:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:43:54,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:43:54,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531229581] [2023-08-24 03:43:54,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531229581] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:43:54,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031331103] [2023-08-24 03:43:54,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 03:43:54,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:43:54,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:43:54,389 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:43:54,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 03:43:54,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 03:43:54,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:43:54,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-24 03:43:54,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:43:54,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:43:54,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:43:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:43:54,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031331103] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 03:43:54,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 03:43:54,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 12 [2023-08-24 03:43:54,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247128262] [2023-08-24 03:43:54,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:43:54,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 03:43:54,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:43:54,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 03:43:54,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-08-24 03:43:54,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 195 [2023-08-24 03:43:54,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 543 transitions, 6488 flow. Second operand has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:54,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:43:54,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 195 [2023-08-24 03:43:54,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:43:56,473 INFO L124 PetriNetUnfolderBase]: 11204/16037 cut-off events. [2023-08-24 03:43:56,473 INFO L125 PetriNetUnfolderBase]: For 80035/80035 co-relation queries the response was YES. [2023-08-24 03:43:56,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85237 conditions, 16037 events. 11204/16037 cut-off events. For 80035/80035 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 92771 event pairs, 793 based on Foata normal form. 382/16419 useless extension candidates. Maximal degree in co-relation 76365. Up to 5546 conditions per place. [2023-08-24 03:43:56,582 INFO L140 encePairwiseOnDemand]: 187/195 looper letters, 820 selfloop transitions, 321 changer transitions 0/1141 dead transitions. [2023-08-24 03:43:56,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 1141 transitions, 14891 flow [2023-08-24 03:43:56,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 03:43:56,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 03:43:56,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 583 transitions. [2023-08-24 03:43:56,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4982905982905983 [2023-08-24 03:43:56,585 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 583 transitions. [2023-08-24 03:43:56,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 583 transitions. [2023-08-24 03:43:56,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:43:56,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 583 transitions. [2023-08-24 03:43:56,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.16666666666667) internal successors, (583), 6 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:56,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:56,589 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:56,589 INFO L175 Difference]: Start difference. First operand has 115 places, 543 transitions, 6488 flow. Second operand 6 states and 583 transitions. [2023-08-24 03:43:56,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 1141 transitions, 14891 flow [2023-08-24 03:43:57,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 1141 transitions, 14549 flow, removed 169 selfloop flow, removed 2 redundant places. [2023-08-24 03:43:57,112 INFO L231 Difference]: Finished difference. Result has 122 places, 749 transitions, 10016 flow [2023-08-24 03:43:57,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=6303, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10016, PETRI_PLACES=122, PETRI_TRANSITIONS=749} [2023-08-24 03:43:57,113 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 90 predicate places. [2023-08-24 03:43:57,113 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 749 transitions, 10016 flow [2023-08-24 03:43:57,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:57,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:43:57,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:43:57,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-24 03:43:57,314 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 [2023-08-24 03:43:57,314 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:43:57,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:43:57,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1321199193, now seen corresponding path program 3 times [2023-08-24 03:43:57,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:43:57,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178695586] [2023-08-24 03:43:57,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:43:57,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:43:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:43:57,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:43:57,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:43:57,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178695586] [2023-08-24 03:43:57,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178695586] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:43:57,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844677624] [2023-08-24 03:43:57,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 03:43:57,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:43:57,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:43:57,699 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:43:57,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 03:43:57,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 03:43:57,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:43:57,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-24 03:43:57,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:43:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:43:57,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:43:57,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:43:57,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844677624] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:43:57,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:43:57,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-24 03:43:57,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435925133] [2023-08-24 03:43:57,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:43:57,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 03:43:57,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:43:57,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 03:43:57,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-24 03:43:57,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 195 [2023-08-24 03:43:57,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 749 transitions, 10016 flow. Second operand has 11 states, 11 states have (on average 85.63636363636364) internal successors, (942), 11 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:43:57,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:43:57,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 195 [2023-08-24 03:43:57,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:44:05,201 INFO L124 PetriNetUnfolderBase]: 30041/43061 cut-off events. [2023-08-24 03:44:05,201 INFO L125 PetriNetUnfolderBase]: For 308392/308413 co-relation queries the response was YES. [2023-08-24 03:44:05,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259551 conditions, 43061 events. 30041/43061 cut-off events. For 308392/308413 co-relation queries the response was YES. Maximal size of possible extension queue 2100. Compared 282442 event pairs, 1506 based on Foata normal form. 2002/45051 useless extension candidates. Maximal degree in co-relation 219571. Up to 9707 conditions per place. [2023-08-24 03:44:05,604 INFO L140 encePairwiseOnDemand]: 186/195 looper letters, 1854 selfloop transitions, 1817 changer transitions 4/3678 dead transitions. [2023-08-24 03:44:05,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 3678 transitions, 54751 flow [2023-08-24 03:44:05,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-24 03:44:05,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-24 03:44:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3208 transitions. [2023-08-24 03:44:05,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47003663003663004 [2023-08-24 03:44:05,613 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3208 transitions. [2023-08-24 03:44:05,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3208 transitions. [2023-08-24 03:44:05,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:44:05,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3208 transitions. [2023-08-24 03:44:05,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 91.65714285714286) internal successors, (3208), 35 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:44:05,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 195.0) internal successors, (7020), 36 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:44:05,634 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 195.0) internal successors, (7020), 36 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:44:05,634 INFO L175 Difference]: Start difference. First operand has 122 places, 749 transitions, 10016 flow. Second operand 35 states and 3208 transitions. [2023-08-24 03:44:05,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 3678 transitions, 54751 flow [2023-08-24 03:44:07,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 3678 transitions, 54197 flow, removed 277 selfloop flow, removed 0 redundant places. [2023-08-24 03:44:07,894 INFO L231 Difference]: Finished difference. Result has 180 places, 2322 transitions, 38001 flow [2023-08-24 03:44:07,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=9934, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=400, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=38001, PETRI_PLACES=180, PETRI_TRANSITIONS=2322} [2023-08-24 03:44:07,895 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 148 predicate places. [2023-08-24 03:44:07,895 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 2322 transitions, 38001 flow [2023-08-24 03:44:07,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 85.63636363636364) internal successors, (942), 11 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:44:07,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:44:07,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:44:07,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 03:44:08,103 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 [2023-08-24 03:44:08,104 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:44:08,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:44:08,104 INFO L85 PathProgramCache]: Analyzing trace with hash 587723179, now seen corresponding path program 4 times [2023-08-24 03:44:08,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:44:08,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586994122] [2023-08-24 03:44:08,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:44:08,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:44:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:44:08,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:44:08,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:44:08,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586994122] [2023-08-24 03:44:08,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586994122] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:44:08,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536018441] [2023-08-24 03:44:08,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 03:44:08,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:44:08,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:44:08,446 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:44:08,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 03:44:08,525 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 03:44:08,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:44:08,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-24 03:44:08,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:44:08,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:44:08,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:44:09,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:44:09,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536018441] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:44:09,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:44:09,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 9] total 19 [2023-08-24 03:44:09,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671797861] [2023-08-24 03:44:09,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:44:09,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-24 03:44:09,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:44:09,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-24 03:44:09,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2023-08-24 03:44:09,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 195 [2023-08-24 03:44:09,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 2322 transitions, 38001 flow. Second operand has 20 states, 20 states have (on average 73.85) internal successors, (1477), 20 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:44:09,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:44:09,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 195 [2023-08-24 03:44:09,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:44:46,422 INFO L124 PetriNetUnfolderBase]: 58565/85538 cut-off events. [2023-08-24 03:44:46,422 INFO L125 PetriNetUnfolderBase]: For 1634340/1634340 co-relation queries the response was YES. [2023-08-24 03:44:47,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 649136 conditions, 85538 events. 58565/85538 cut-off events. For 1634340/1634340 co-relation queries the response was YES. Maximal size of possible extension queue 4373. Compared 637032 event pairs, 307 based on Foata normal form. 1440/86978 useless extension candidates. Maximal degree in co-relation 578261. Up to 18905 conditions per place. [2023-08-24 03:44:47,655 INFO L140 encePairwiseOnDemand]: 181/195 looper letters, 2940 selfloop transitions, 5332 changer transitions 51/8323 dead transitions. [2023-08-24 03:44:47,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 8323 transitions, 149772 flow [2023-08-24 03:44:47,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-08-24 03:44:47,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2023-08-24 03:44:47,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 9390 transitions. [2023-08-24 03:44:47,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012820512820513 [2023-08-24 03:44:47,668 INFO L72 ComplementDD]: Start complementDD. Operand 120 states and 9390 transitions. [2023-08-24 03:44:47,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 9390 transitions. [2023-08-24 03:44:47,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:44:47,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 120 states and 9390 transitions. [2023-08-24 03:44:47,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 121 states, 120 states have (on average 78.25) internal successors, (9390), 120 states have internal predecessors, (9390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:44:47,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 121 states, 121 states have (on average 195.0) internal successors, (23595), 121 states have internal predecessors, (23595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:44:47,718 INFO L81 ComplementDD]: Finished complementDD. Result has 121 states, 121 states have (on average 195.0) internal successors, (23595), 121 states have internal predecessors, (23595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:44:47,718 INFO L175 Difference]: Start difference. First operand has 180 places, 2322 transitions, 38001 flow. Second operand 120 states and 9390 transitions. [2023-08-24 03:44:47,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 8323 transitions, 149772 flow [2023-08-24 03:45:09,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 8323 transitions, 144313 flow, removed 2706 selfloop flow, removed 2 redundant places. [2023-08-24 03:45:09,633 INFO L231 Difference]: Finished difference. Result has 375 places, 7036 transitions, 131192 flow [2023-08-24 03:45:09,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=36431, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=120, PETRI_FLOW=131192, PETRI_PLACES=375, PETRI_TRANSITIONS=7036} [2023-08-24 03:45:09,636 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 343 predicate places. [2023-08-24 03:45:09,636 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 7036 transitions, 131192 flow [2023-08-24 03:45:09,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 73.85) internal successors, (1477), 20 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:45:09,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:45:09,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:45:09,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 03:45:09,845 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 [2023-08-24 03:45:09,845 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:45:09,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:45:09,846 INFO L85 PathProgramCache]: Analyzing trace with hash 243404620, now seen corresponding path program 2 times [2023-08-24 03:45:09,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:45:09,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001998858] [2023-08-24 03:45:09,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:45:09,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:45:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:45:11,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:45:11,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:45:11,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001998858] [2023-08-24 03:45:11,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001998858] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:45:11,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111716092] [2023-08-24 03:45:11,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 03:45:11,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:45:11,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:45:11,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:45:11,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 03:45:11,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 03:45:11,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:45:11,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-24 03:45:11,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:45:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:45:12,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:45:13,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:45:13,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111716092] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:45:13,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:45:13,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 25 [2023-08-24 03:45:13,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275210322] [2023-08-24 03:45:13,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:45:13,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-24 03:45:13,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:45:13,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-24 03:45:13,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2023-08-24 03:45:13,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 195 [2023-08-24 03:45:13,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 7036 transitions, 131192 flow. Second operand has 27 states, 27 states have (on average 72.55555555555556) internal successors, (1959), 27 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:45:13,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:45:13,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 195 [2023-08-24 03:45:13,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:48:41,983 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 [] [2023-08-24 03:48:47,744 INFO L124 PetriNetUnfolderBase]: 96931/142700 cut-off events. [2023-08-24 03:48:47,744 INFO L125 PetriNetUnfolderBase]: For 4896647/4896647 co-relation queries the response was YES. [2023-08-24 03:48:50,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1332375 conditions, 142700 events. 96931/142700 cut-off events. For 4896647/4896647 co-relation queries the response was YES. Maximal size of possible extension queue 7203. Compared 1147816 event pairs, 511 based on Foata normal form. 224/142924 useless extension candidates. Maximal degree in co-relation 1330552. Up to 37194 conditions per place. [2023-08-24 03:48:51,210 INFO L140 encePairwiseOnDemand]: 182/195 looper letters, 4962 selfloop transitions, 9580 changer transitions 1420/15962 dead transitions. [2023-08-24 03:48:51,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 15962 transitions, 328894 flow [2023-08-24 03:48:51,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2023-08-24 03:48:51,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2023-08-24 03:48:51,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 11112 transitions. [2023-08-24 03:48:51,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40130010834236185 [2023-08-24 03:48:51,224 INFO L72 ComplementDD]: Start complementDD. Operand 142 states and 11112 transitions. [2023-08-24 03:48:51,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 142 states and 11112 transitions. [2023-08-24 03:48:51,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:48:51,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 142 states and 11112 transitions. [2023-08-24 03:48:51,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 143 states, 142 states have (on average 78.25352112676056) internal successors, (11112), 142 states have internal predecessors, (11112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:48:51,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 143 states, 143 states have (on average 195.0) internal successors, (27885), 143 states have internal predecessors, (27885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:48:51,269 INFO L81 ComplementDD]: Finished complementDD. Result has 143 states, 143 states have (on average 195.0) internal successors, (27885), 143 states have internal predecessors, (27885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:48:51,269 INFO L175 Difference]: Start difference. First operand has 375 places, 7036 transitions, 131192 flow. Second operand 142 states and 11112 transitions. [2023-08-24 03:48:51,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 15962 transitions, 328894 flow [2023-08-24 03:56:22,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 15962 transitions, 313521 flow, removed 7650 selfloop flow, removed 6 redundant places. [2023-08-24 03:56:22,537 INFO L231 Difference]: Finished difference. Result has 593 places, 12545 transitions, 262274 flow [2023-08-24 03:56:22,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=124367, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7036, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4550, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=142, PETRI_FLOW=262274, PETRI_PLACES=593, PETRI_TRANSITIONS=12545} [2023-08-24 03:56:22,544 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 561 predicate places. [2023-08-24 03:56:22,545 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 12545 transitions, 262274 flow [2023-08-24 03:56:22,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 72.55555555555556) internal successors, (1959), 27 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:56:22,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:56:22,546 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:56:22,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 03:56:22,756 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 [2023-08-24 03:56:22,757 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:56:22,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:56:22,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1754784722, now seen corresponding path program 3 times [2023-08-24 03:56:22,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:56:22,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008649942] [2023-08-24 03:56:22,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:56:22,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:56:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:56:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:56:27,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:56:27,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008649942] [2023-08-24 03:56:27,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008649942] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:56:27,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828732260] [2023-08-24 03:56:27,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 03:56:27,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:56:27,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:56:27,208 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:56:27,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 03:56:27,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-24 03:56:27,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:56:27,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-24 03:56:27,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:56:28,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:56:28,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:56:34,564 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:56:34,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828732260] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:56:34,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:56:34,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 26 [2023-08-24 03:56:34,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658582125] [2023-08-24 03:56:34,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:56:34,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-24 03:56:34,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:56:34,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-24 03:56:34,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2023-08-24 03:56:34,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 195 [2023-08-24 03:56:34,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 12545 transitions, 262274 flow. Second operand has 28 states, 28 states have (on average 72.67857142857143) internal successors, (2035), 28 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:56:34,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:56:34,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 195 [2023-08-24 03:56:34,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-24 03:57:03,763 WARN L266 SmtUtils]: Removed 10 from assertion stack [2023-08-24 03:57:03,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-24 03:57:03,764 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 03:57:03,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-24 03:57:03,779 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 03:57:03,779 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 03:57:03,964 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 [2023-08-24 03:57:03,965 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 131 for 639ms.. [2023-08-24 03:57:03,966 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 03:57:03,966 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 03:57:03,966 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 03:57:03,967 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 1] [2023-08-24 03:57:03,969 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 03:57:03,969 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 03:57:03,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 03:57:03 BasicIcfg [2023-08-24 03:57:03,971 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 03:57:03,971 INFO L158 Benchmark]: Toolchain (without parser) took 817694.13ms. Allocated memory was 354.4MB in the beginning and 10.3GB in the end (delta: 10.0GB). Free memory was 330.2MB in the beginning and 4.2GB in the end (delta: -3.9GB). Peak memory consumption was 6.1GB. Max. memory is 16.0GB. [2023-08-24 03:57:03,971 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 354.4MB. Free memory was 331.1MB in the beginning and 331.1MB in the end (delta: 77.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 03:57:03,972 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.97ms. Allocated memory is still 354.4MB. Free memory was 330.2MB in the beginning and 318.6MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 03:57:03,972 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.05ms. Allocated memory is still 354.4MB. Free memory was 318.6MB in the beginning and 316.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 03:57:03,972 INFO L158 Benchmark]: Boogie Preprocessor took 31.86ms. Allocated memory is still 354.4MB. Free memory was 316.9MB in the beginning and 315.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 03:57:03,972 INFO L158 Benchmark]: RCFGBuilder took 438.76ms. Allocated memory is still 354.4MB. Free memory was 315.5MB in the beginning and 296.7MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 03:57:03,973 INFO L158 Benchmark]: TraceAbstraction took 816898.17ms. Allocated memory was 354.4MB in the beginning and 10.3GB in the end (delta: 10.0GB). Free memory was 295.9MB in the beginning and 4.2GB in the end (delta: -3.9GB). Peak memory consumption was 6.1GB. Max. memory is 16.0GB. [2023-08-24 03:57:03,974 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 354.4MB. Free memory was 331.1MB in the beginning and 331.1MB in the end (delta: 77.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 272.97ms. Allocated memory is still 354.4MB. Free memory was 330.2MB in the beginning and 318.6MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.05ms. Allocated memory is still 354.4MB. Free memory was 318.6MB in the beginning and 316.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.86ms. Allocated memory is still 354.4MB. Free memory was 316.9MB in the beginning and 315.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 438.76ms. Allocated memory is still 354.4MB. Free memory was 315.5MB in the beginning and 296.7MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 816898.17ms. Allocated memory was 354.4MB in the beginning and 10.3GB in the end (delta: 10.0GB). Free memory was 295.9MB in the beginning and 4.2GB in the end (delta: -3.9GB). Peak memory consumption was 6.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 100 PlacesBefore, 32 PlacesAfterwards, 98 TransitionsBefore, 25 TransitionsAfterwards, 1010 CoEnabledTransitionPairs, 6 FixpointIterations, 48 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 84 TotalNumberOfCompositions, 1725 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1440, independent: 1399, independent conditional: 0, independent unconditional: 1399, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 531, independent: 522, independent conditional: 0, independent unconditional: 522, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1440, independent: 877, independent conditional: 0, independent unconditional: 877, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 531, unknown conditional: 0, unknown unconditional: 531] , Statistics on independence cache: Total cache size (in pairs): 84, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 131 for 639ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 131 for 639ms.. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 131 for 639ms.. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 131 for 639ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 129 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 816.8s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 787.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 2452 SdHoareTripleChecker+Valid, 20.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2452 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 19.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 352 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10257 IncrementalHoareTripleChecker+Invalid, 10610 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 352 mSolverCounterUnsat, 21 mSDtfsCounter, 10257 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 766 GetRequests, 297 SyntacticMatches, 4 SemanticMatches, 464 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17012 ImplicationChecksByTransitivity, 92.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262274occurred in iteration=10, InterpolantAutomatonStates: 393, 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, 1.0s SatisfiabilityAnalysisTime, 22.8s InterpolantComputationTime, 429 NumberOfCodeBlocks, 427 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 566 ConstructedInterpolants, 0 QuantifiedInterpolants, 19285 SizeOfPredicates, 73 NumberOfNonLiveVariables, 1409 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 26 InterpolantComputations, 5 PerfectInterpolantSequences, 12/55 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