/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:21:13,240 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:21:13,311 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-SemanticLbe.epf [2023-11-17 12:21:13,334 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:21:13,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:21:13,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:21:13,335 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:21:13,336 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:21:13,336 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:21:13,336 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:21:13,336 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:21:13,337 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:21:13,337 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:21:13,337 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:21:13,337 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:21:13,337 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:21:13,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:21:13,338 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:21:13,338 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:21:13,338 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:21:13,339 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:21:13,342 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:21:13,343 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:21:13,343 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:21:13,346 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:21:13,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:21:13,346 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:21:13,346 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:21:13,346 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:21:13,347 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:21:13,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:21:13,347 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:21:13,348 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:21:13,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:21:13,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:21:13,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:21:13,579 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:21:13,579 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:21:13,580 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-11-17 12:21:14,723 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:21:14,917 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:21:14,918 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-11-17 12:21:14,927 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9d54004f/4e36e235f6cd453c9226f7f9b693d433/FLAGa7dbe426c [2023-11-17 12:21:14,943 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9d54004f/4e36e235f6cd453c9226f7f9b693d433 [2023-11-17 12:21:14,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:21:14,947 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:21:14,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:21:14,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:21:14,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:21:14,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:21:14" (1/1) ... [2023-11-17 12:21:14,955 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6202fb1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:14, skipping insertion in model container [2023-11-17 12:21:14,955 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:21:14" (1/1) ... [2023-11-17 12:21:14,986 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:21:15,166 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-more-buffer-series2.wvr.c[4284,4297] [2023-11-17 12:21:15,180 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:21:15,187 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:21:15,228 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-more-buffer-series2.wvr.c[4284,4297] [2023-11-17 12:21:15,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:21:15,239 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:21:15,240 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:21:15,245 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:21:15,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:15 WrapperNode [2023-11-17 12:21:15,246 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:21:15,247 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:21:15,247 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:21:15,247 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:21:15,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:15" (1/1) ... [2023-11-17 12:21:15,261 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:15" (1/1) ... [2023-11-17 12:21:15,286 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 360 [2023-11-17 12:21:15,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:21:15,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:21:15,288 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:21:15,288 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:21:15,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:15" (1/1) ... [2023-11-17 12:21:15,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:15" (1/1) ... [2023-11-17 12:21:15,299 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:15" (1/1) ... [2023-11-17 12:21:15,300 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:15" (1/1) ... [2023-11-17 12:21:15,307 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:15" (1/1) ... [2023-11-17 12:21:15,320 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:15" (1/1) ... [2023-11-17 12:21:15,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:15" (1/1) ... [2023-11-17 12:21:15,324 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:15" (1/1) ... [2023-11-17 12:21:15,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:21:15,328 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:21:15,328 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:21:15,328 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:21:15,347 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:15" (1/1) ... [2023-11-17 12:21:15,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:21:15,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:21:15,371 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) [2023-11-17 12:21:15,388 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 [2023-11-17 12:21:15,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:21:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:21:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:21:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:21:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:21:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:21:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:21:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:21:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:21:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:21:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 12:21:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 12:21:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:21:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:21:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:21:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 12:21:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:21:15,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:21:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:21:15,414 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 12:21:15,506 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:21:15,507 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:21:15,853 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:21:16,213 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:21:16,213 INFO L307 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-17 12:21:16,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:21:16 BoogieIcfgContainer [2023-11-17 12:21:16,214 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:21:16,216 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:21:16,216 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:21:16,218 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:21:16,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:21:14" (1/3) ... [2023-11-17 12:21:16,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8fc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:21:16, skipping insertion in model container [2023-11-17 12:21:16,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:15" (2/3) ... [2023-11-17 12:21:16,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8fc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:21:16, skipping insertion in model container [2023-11-17 12:21:16,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:21:16" (3/3) ... [2023-11-17 12:21:16,220 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2023-11-17 12:21:16,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:21:16,233 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:21:16,233 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:21:16,280 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 12:21:16,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 53 transitions, 134 flow [2023-11-17 12:21:16,342 INFO L124 PetriNetUnfolderBase]: 7/49 cut-off events. [2023-11-17 12:21:16,342 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 12:21:16,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 49 events. 7/49 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-17 12:21:16,346 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 53 transitions, 134 flow [2023-11-17 12:21:16,349 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 48 transitions, 120 flow [2023-11-17 12:21:16,352 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:21:16,360 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 48 transitions, 120 flow [2023-11-17 12:21:16,361 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 48 transitions, 120 flow [2023-11-17 12:21:16,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 48 transitions, 120 flow [2023-11-17 12:21:16,389 INFO L124 PetriNetUnfolderBase]: 7/48 cut-off events. [2023-11-17 12:21:16,389 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 12:21:16,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 48 events. 7/48 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-17 12:21:16,390 INFO L119 LiptonReduction]: Number of co-enabled transitions 768 [2023-11-17 12:21:17,226 INFO L134 LiptonReduction]: Checked pairs total: 973 [2023-11-17 12:21:17,227 INFO L136 LiptonReduction]: Total number of compositions: 11 [2023-11-17 12:21:17,242 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:21:17,247 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=LoopHeads, 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;@32e54cdd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:21:17,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 12:21:17,261 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:21:17,261 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2023-11-17 12:21:17,261 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 12:21:17,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:17,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:17,262 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 2 more)] === [2023-11-17 12:21:17,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:17,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1385185911, now seen corresponding path program 1 times [2023-11-17 12:21:17,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:17,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885509402] [2023-11-17 12:21:17,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:17,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:17,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:21:17,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:17,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885509402] [2023-11-17 12:21:17,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885509402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:17,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:17,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 12:21:17,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792038373] [2023-11-17 12:21:17,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:17,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:21:17,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:17,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:21:17,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:21:17,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 64 [2023-11-17 12:21:17,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:17,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:17,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 64 [2023-11-17 12:21:17,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:18,114 INFO L124 PetriNetUnfolderBase]: 1995/2772 cut-off events. [2023-11-17 12:21:18,115 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2023-11-17 12:21:18,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5548 conditions, 2772 events. 1995/2772 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10619 event pairs, 624 based on Foata normal form. 1/2026 useless extension candidates. Maximal degree in co-relation 4188. Up to 1445 conditions per place. [2023-11-17 12:21:18,136 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 53 selfloop transitions, 3 changer transitions 1/59 dead transitions. [2023-11-17 12:21:18,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 59 transitions, 271 flow [2023-11-17 12:21:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:21:18,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:21:18,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2023-11-17 12:21:18,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2023-11-17 12:21:18,146 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2023-11-17 12:21:18,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2023-11-17 12:21:18,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:18,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2023-11-17 12:21:18,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:18,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:18,156 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:18,157 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 98 flow. Second operand 3 states and 121 transitions. [2023-11-17 12:21:18,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 59 transitions, 271 flow [2023-11-17 12:21:18,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 59 transitions, 245 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-17 12:21:18,164 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 101 flow [2023-11-17 12:21:18,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2023-11-17 12:21:18,169 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2023-11-17 12:21:18,169 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 101 flow [2023-11-17 12:21:18,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:18,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:18,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:18,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:21:18,171 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 2 more)] === [2023-11-17 12:21:18,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:18,177 INFO L85 PathProgramCache]: Analyzing trace with hash 930225770, now seen corresponding path program 1 times [2023-11-17 12:21:18,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:18,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328540064] [2023-11-17 12:21:18,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:18,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:18,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:21:18,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:18,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328540064] [2023-11-17 12:21:18,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328540064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:18,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:18,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 12:21:18,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022281706] [2023-11-17 12:21:18,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:18,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:21:18,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:18,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:21:18,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:21:18,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 64 [2023-11-17 12:21:18,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:18,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:18,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 64 [2023-11-17 12:21:18,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:18,685 INFO L124 PetriNetUnfolderBase]: 3075/4119 cut-off events. [2023-11-17 12:21:18,685 INFO L125 PetriNetUnfolderBase]: For 581/581 co-relation queries the response was YES. [2023-11-17 12:21:18,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9065 conditions, 4119 events. 3075/4119 cut-off events. For 581/581 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16244 event pairs, 1168 based on Foata normal form. 134/3612 useless extension candidates. Maximal degree in co-relation 3824. Up to 2266 conditions per place. [2023-11-17 12:21:18,702 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 60 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-17 12:21:18,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 63 transitions, 286 flow [2023-11-17 12:21:18,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:21:18,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:21:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-17 12:21:18,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609375 [2023-11-17 12:21:18,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-17 12:21:18,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-17 12:21:18,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:18,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-17 12:21:18,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:18,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:18,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:18,709 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 101 flow. Second operand 3 states and 117 transitions. [2023-11-17 12:21:18,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 63 transitions, 286 flow [2023-11-17 12:21:18,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 63 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:21:18,712 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 112 flow [2023-11-17 12:21:18,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-11-17 12:21:18,712 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-11-17 12:21:18,713 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 112 flow [2023-11-17 12:21:18,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:18,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:18,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:18,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:21:18,720 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 2 more)] === [2023-11-17 12:21:18,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:18,721 INFO L85 PathProgramCache]: Analyzing trace with hash -494196866, now seen corresponding path program 1 times [2023-11-17 12:21:18,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:18,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624055734] [2023-11-17 12:21:18,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:18,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:21:18,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:18,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624055734] [2023-11-17 12:21:18,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624055734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:18,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:18,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 12:21:18,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161139155] [2023-11-17 12:21:18,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:18,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:21:18,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:18,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:21:18,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:21:18,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 64 [2023-11-17 12:21:18,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:18,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:18,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 64 [2023-11-17 12:21:18,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:19,241 INFO L124 PetriNetUnfolderBase]: 4211/5765 cut-off events. [2023-11-17 12:21:19,242 INFO L125 PetriNetUnfolderBase]: For 1579/1579 co-relation queries the response was YES. [2023-11-17 12:21:19,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13142 conditions, 5765 events. 4211/5765 cut-off events. For 1579/1579 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 24532 event pairs, 1600 based on Foata normal form. 198/5520 useless extension candidates. Maximal degree in co-relation 7132. Up to 3501 conditions per place. [2023-11-17 12:21:19,263 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 64 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-17 12:21:19,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 67 transitions, 320 flow [2023-11-17 12:21:19,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:21:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:21:19,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-11-17 12:21:19,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2023-11-17 12:21:19,266 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-11-17 12:21:19,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-11-17 12:21:19,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:19,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-11-17 12:21:19,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:19,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:19,269 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:19,269 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 112 flow. Second operand 3 states and 119 transitions. [2023-11-17 12:21:19,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 67 transitions, 320 flow [2023-11-17 12:21:19,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 67 transitions, 317 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:21:19,270 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 124 flow [2023-11-17 12:21:19,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-11-17 12:21:19,271 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-11-17 12:21:19,271 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 124 flow [2023-11-17 12:21:19,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:19,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:19,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:19,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 12:21:19,272 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 2 more)] === [2023-11-17 12:21:19,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:19,272 INFO L85 PathProgramCache]: Analyzing trace with hash 444902791, now seen corresponding path program 1 times [2023-11-17 12:21:19,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:19,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460709731] [2023-11-17 12:21:19,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:19,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:19,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:21:19,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:19,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460709731] [2023-11-17 12:21:19,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460709731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:19,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:19,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:21:19,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119901725] [2023-11-17 12:21:19,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:19,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:21:19,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:19,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:21:19,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:21:19,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 64 [2023-11-17 12:21:19,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:19,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:19,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 64 [2023-11-17 12:21:19,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:19,998 INFO L124 PetriNetUnfolderBase]: 5431/7645 cut-off events. [2023-11-17 12:21:19,998 INFO L125 PetriNetUnfolderBase]: For 2833/2833 co-relation queries the response was YES. [2023-11-17 12:21:20,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17807 conditions, 7645 events. 5431/7645 cut-off events. For 2833/2833 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 35404 event pairs, 4378 based on Foata normal form. 156/7743 useless extension candidates. Maximal degree in co-relation 11114. Up to 5250 conditions per place. [2023-11-17 12:21:20,028 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 70 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-11-17 12:21:20,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 75 transitions, 360 flow [2023-11-17 12:21:20,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:21:20,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:21:20,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2023-11-17 12:21:20,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2023-11-17 12:21:20,029 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 152 transitions. [2023-11-17 12:21:20,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 152 transitions. [2023-11-17 12:21:20,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:20,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 152 transitions. [2023-11-17 12:21:20,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:20,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:20,031 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:20,031 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 124 flow. Second operand 4 states and 152 transitions. [2023-11-17 12:21:20,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 75 transitions, 360 flow [2023-11-17 12:21:20,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 75 transitions, 358 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:21:20,034 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 142 flow [2023-11-17 12:21:20,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-11-17 12:21:20,034 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2023-11-17 12:21:20,034 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 142 flow [2023-11-17 12:21:20,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:20,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:20,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:20,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 12:21:20,035 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 2 more)] === [2023-11-17 12:21:20,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:20,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1360816458, now seen corresponding path program 1 times [2023-11-17 12:21:20,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:20,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073591836] [2023-11-17 12:21:20,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:20,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:20,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:21:20,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:20,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073591836] [2023-11-17 12:21:20,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073591836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:20,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:20,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:21:20,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174091409] [2023-11-17 12:21:20,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:20,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:21:20,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:20,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:21:20,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:21:20,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 64 [2023-11-17 12:21:20,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:20,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:20,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 64 [2023-11-17 12:21:20,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:20,826 INFO L124 PetriNetUnfolderBase]: 7695/11006 cut-off events. [2023-11-17 12:21:20,826 INFO L125 PetriNetUnfolderBase]: For 4080/4080 co-relation queries the response was YES. [2023-11-17 12:21:20,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25141 conditions, 11006 events. 7695/11006 cut-off events. For 4080/4080 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 55825 event pairs, 6450 based on Foata normal form. 306/11269 useless extension candidates. Maximal degree in co-relation 18194. Up to 7422 conditions per place. [2023-11-17 12:21:20,867 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 69 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2023-11-17 12:21:20,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 77 transitions, 384 flow [2023-11-17 12:21:20,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:21:20,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:21:20,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2023-11-17 12:21:20,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540625 [2023-11-17 12:21:20,868 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 173 transitions. [2023-11-17 12:21:20,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 173 transitions. [2023-11-17 12:21:20,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:20,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 173 transitions. [2023-11-17 12:21:20,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:20,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 64.0) internal successors, (384), 6 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:20,870 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 64.0) internal successors, (384), 6 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:20,870 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 142 flow. Second operand 5 states and 173 transitions. [2023-11-17 12:21:20,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 77 transitions, 384 flow [2023-11-17 12:21:20,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 77 transitions, 380 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 12:21:20,877 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 177 flow [2023-11-17 12:21:20,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-11-17 12:21:20,879 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2023-11-17 12:21:20,879 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 177 flow [2023-11-17 12:21:20,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:20,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:20,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:20,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 12:21:20,880 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 2 more)] === [2023-11-17 12:21:20,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:20,880 INFO L85 PathProgramCache]: Analyzing trace with hash -390916434, now seen corresponding path program 1 times [2023-11-17 12:21:20,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:20,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179400007] [2023-11-17 12:21:20,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:20,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:21:21,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:21,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179400007] [2023-11-17 12:21:21,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179400007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:21,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:21,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:21:21,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475290964] [2023-11-17 12:21:21,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:21,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:21:21,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:21,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:21:21,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:21:21,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 64 [2023-11-17 12:21:21,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:21,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:21,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 64 [2023-11-17 12:21:21,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:22,450 INFO L124 PetriNetUnfolderBase]: 13213/18670 cut-off events. [2023-11-17 12:21:22,450 INFO L125 PetriNetUnfolderBase]: For 5633/5633 co-relation queries the response was YES. [2023-11-17 12:21:22,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42644 conditions, 18670 events. 13213/18670 cut-off events. For 5633/5633 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 100922 event pairs, 5320 based on Foata normal form. 248/18908 useless extension candidates. Maximal degree in co-relation 29642. Up to 6719 conditions per place. [2023-11-17 12:21:22,504 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 114 selfloop transitions, 8 changer transitions 1/123 dead transitions. [2023-11-17 12:21:22,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 123 transitions, 643 flow [2023-11-17 12:21:22,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:21:22,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:21:22,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2023-11-17 12:21:22,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713541666666667 [2023-11-17 12:21:22,505 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 181 transitions. [2023-11-17 12:21:22,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 181 transitions. [2023-11-17 12:21:22,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:22,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 181 transitions. [2023-11-17 12:21:22,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:22,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:22,507 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:22,507 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 177 flow. Second operand 6 states and 181 transitions. [2023-11-17 12:21:22,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 123 transitions, 643 flow [2023-11-17 12:21:22,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 123 transitions, 636 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 12:21:22,512 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 203 flow [2023-11-17 12:21:22,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-11-17 12:21:22,513 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2023-11-17 12:21:22,513 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 203 flow [2023-11-17 12:21:22,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:22,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:22,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:22,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 12:21:22,513 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 2 more)] === [2023-11-17 12:21:22,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:22,514 INFO L85 PathProgramCache]: Analyzing trace with hash -946375619, now seen corresponding path program 1 times [2023-11-17 12:21:22,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:22,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866332674] [2023-11-17 12:21:22,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:22,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:22,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:21:22,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:22,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866332674] [2023-11-17 12:21:22,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866332674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:22,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:22,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:21:22,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954269927] [2023-11-17 12:21:22,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:22,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:21:22,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:22,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:21:22,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:21:22,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 64 [2023-11-17 12:21:22,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 203 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:22,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:22,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 64 [2023-11-17 12:21:22,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:23,628 INFO L124 PetriNetUnfolderBase]: 9813/13856 cut-off events. [2023-11-17 12:21:23,628 INFO L125 PetriNetUnfolderBase]: For 5798/5798 co-relation queries the response was YES. [2023-11-17 12:21:23,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32799 conditions, 13856 events. 9813/13856 cut-off events. For 5798/5798 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 70191 event pairs, 7432 based on Foata normal form. 192/14044 useless extension candidates. Maximal degree in co-relation 22999. Up to 11964 conditions per place. [2023-11-17 12:21:23,667 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 42 selfloop transitions, 5 changer transitions 37/84 dead transitions. [2023-11-17 12:21:23,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 84 transitions, 455 flow [2023-11-17 12:21:23,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:21:23,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:21:23,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2023-11-17 12:21:23,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2023-11-17 12:21:23,668 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 148 transitions. [2023-11-17 12:21:23,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 148 transitions. [2023-11-17 12:21:23,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:23,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 148 transitions. [2023-11-17 12:21:23,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:23,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:23,669 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:23,669 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 203 flow. Second operand 6 states and 148 transitions. [2023-11-17 12:21:23,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 84 transitions, 455 flow [2023-11-17 12:21:23,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 84 transitions, 445 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 12:21:23,674 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 194 flow [2023-11-17 12:21:23,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2023-11-17 12:21:23,675 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2023-11-17 12:21:23,675 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 194 flow [2023-11-17 12:21:23,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:23,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:23,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:23,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 12:21:23,675 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 2 more)] === [2023-11-17 12:21:23,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:23,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1076020664, now seen corresponding path program 1 times [2023-11-17 12:21:23,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:23,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542338963] [2023-11-17 12:21:23,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:23,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:23,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:21:23,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:23,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542338963] [2023-11-17 12:21:23,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542338963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:23,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:23,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:21:23,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413470737] [2023-11-17 12:21:23,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:23,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:21:23,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:23,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:21:23,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:21:23,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 64 [2023-11-17 12:21:23,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:23,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:23,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 64 [2023-11-17 12:21:23,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:24,611 INFO L124 PetriNetUnfolderBase]: 6113/8458 cut-off events. [2023-11-17 12:21:24,611 INFO L125 PetriNetUnfolderBase]: For 4479/4479 co-relation queries the response was YES. [2023-11-17 12:21:24,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21407 conditions, 8458 events. 6113/8458 cut-off events. For 4479/4479 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 38755 event pairs, 1120 based on Foata normal form. 496/8950 useless extension candidates. Maximal degree in co-relation 17382. Up to 5246 conditions per place. [2023-11-17 12:21:24,644 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 75 selfloop transitions, 7 changer transitions 1/83 dead transitions. [2023-11-17 12:21:24,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 83 transitions, 474 flow [2023-11-17 12:21:24,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:21:24,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:21:24,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2023-11-17 12:21:24,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2023-11-17 12:21:24,646 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 144 transitions. [2023-11-17 12:21:24,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 144 transitions. [2023-11-17 12:21:24,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:24,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 144 transitions. [2023-11-17 12:21:24,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:24,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:24,647 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:24,647 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 194 flow. Second operand 6 states and 144 transitions. [2023-11-17 12:21:24,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 83 transitions, 474 flow [2023-11-17 12:21:24,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 450 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-11-17 12:21:24,652 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 188 flow [2023-11-17 12:21:24,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2023-11-17 12:21:24,653 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2023-11-17 12:21:24,653 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 188 flow [2023-11-17 12:21:24,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:24,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:24,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:24,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 12:21:24,653 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 2 more)] === [2023-11-17 12:21:24,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:24,654 INFO L85 PathProgramCache]: Analyzing trace with hash 185333445, now seen corresponding path program 1 times [2023-11-17 12:21:24,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:24,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174944759] [2023-11-17 12:21:24,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:24,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:24,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:21:24,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:24,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174944759] [2023-11-17 12:21:24,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174944759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:24,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:24,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:21:24,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52961030] [2023-11-17 12:21:24,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:24,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:21:24,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:24,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:21:24,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:21:24,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 64 [2023-11-17 12:21:24,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:24,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:24,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 64 [2023-11-17 12:21:24,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:25,542 INFO L124 PetriNetUnfolderBase]: 4654/6363 cut-off events. [2023-11-17 12:21:25,542 INFO L125 PetriNetUnfolderBase]: For 4928/4928 co-relation queries the response was YES. [2023-11-17 12:21:25,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16801 conditions, 6363 events. 4654/6363 cut-off events. For 4928/4928 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 26486 event pairs, 1274 based on Foata normal form. 432/6793 useless extension candidates. Maximal degree in co-relation 16772. Up to 2526 conditions per place. [2023-11-17 12:21:25,562 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 89 selfloop transitions, 7 changer transitions 12/108 dead transitions. [2023-11-17 12:21:25,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 108 transitions, 619 flow [2023-11-17 12:21:25,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:21:25,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:21:25,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2023-11-17 12:21:25,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2023-11-17 12:21:25,564 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 180 transitions. [2023-11-17 12:21:25,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 180 transitions. [2023-11-17 12:21:25,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:25,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 180 transitions. [2023-11-17 12:21:25,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:25,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 64.0) internal successors, (512), 8 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:25,565 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 64.0) internal successors, (512), 8 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:25,565 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 188 flow. Second operand 7 states and 180 transitions. [2023-11-17 12:21:25,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 108 transitions, 619 flow [2023-11-17 12:21:25,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 108 transitions, 576 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-17 12:21:25,568 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 191 flow [2023-11-17 12:21:25,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=191, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2023-11-17 12:21:25,569 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2023-11-17 12:21:25,569 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 191 flow [2023-11-17 12:21:25,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:25,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:25,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:25,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 12:21:25,570 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 2 more)] === [2023-11-17 12:21:25,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:25,570 INFO L85 PathProgramCache]: Analyzing trace with hash -580264646, now seen corresponding path program 1 times [2023-11-17 12:21:25,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:25,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290170267] [2023-11-17 12:21:25,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:25,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:21:25,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:25,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290170267] [2023-11-17 12:21:25,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290170267] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:21:25,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407107466] [2023-11-17 12:21:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:25,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:21:25,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:21:25,747 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) [2023-11-17 12:21:25,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 12:21:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:25,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 12:21:25,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:21:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 12:21:25,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:21:26,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 12:21:26,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407107466] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:21:26,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:21:26,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 9 [2023-11-17 12:21:26,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829918002] [2023-11-17 12:21:26,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:26,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:21:26,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:26,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:21:26,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-17 12:21:26,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 64 [2023-11-17 12:21:26,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:26,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:26,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 64 [2023-11-17 12:21:26,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:26,555 INFO L124 PetriNetUnfolderBase]: 4640/6229 cut-off events. [2023-11-17 12:21:26,555 INFO L125 PetriNetUnfolderBase]: For 4888/4888 co-relation queries the response was YES. [2023-11-17 12:21:26,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17535 conditions, 6229 events. 4640/6229 cut-off events. For 4888/4888 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 25171 event pairs, 1227 based on Foata normal form. 150/6378 useless extension candidates. Maximal degree in co-relation 17505. Up to 2227 conditions per place. [2023-11-17 12:21:26,578 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 99 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2023-11-17 12:21:26,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 112 transitions, 627 flow [2023-11-17 12:21:26,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:21:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:21:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2023-11-17 12:21:26,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869791666666667 [2023-11-17 12:21:26,579 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2023-11-17 12:21:26,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2023-11-17 12:21:26,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:26,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2023-11-17 12:21:26,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:26,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:26,581 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:26,581 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 191 flow. Second operand 6 states and 187 transitions. [2023-11-17 12:21:26,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 112 transitions, 627 flow [2023-11-17 12:21:26,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 112 transitions, 606 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-17 12:21:26,592 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 262 flow [2023-11-17 12:21:26,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-11-17 12:21:26,593 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2023-11-17 12:21:26,593 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 262 flow [2023-11-17 12:21:26,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:26,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:26,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:26,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 12:21:26,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-17 12:21:26,799 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 2 more)] === [2023-11-17 12:21:26,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:26,800 INFO L85 PathProgramCache]: Analyzing trace with hash 800726354, now seen corresponding path program 1 times [2023-11-17 12:21:26,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:26,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824098570] [2023-11-17 12:21:26,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:26,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:26,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:21:26,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:26,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824098570] [2023-11-17 12:21:26,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824098570] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:21:26,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763145342] [2023-11-17 12:21:26,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:26,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:21:26,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:21:26,937 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) [2023-11-17 12:21:26,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 12:21:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:27,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 12:21:27,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:21:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:21:27,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 12:21:27,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763145342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:27,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 12:21:27,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-17 12:21:27,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444622943] [2023-11-17 12:21:27,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:27,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:21:27,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:27,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:21:27,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:21:27,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 64 [2023-11-17 12:21:27,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 262 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:27,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:27,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 64 [2023-11-17 12:21:27,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:27,904 INFO L124 PetriNetUnfolderBase]: 8134/11039 cut-off events. [2023-11-17 12:21:27,904 INFO L125 PetriNetUnfolderBase]: For 18492/18666 co-relation queries the response was YES. [2023-11-17 12:21:27,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35297 conditions, 11039 events. 8134/11039 cut-off events. For 18492/18666 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 52291 event pairs, 1629 based on Foata normal form. 328/11336 useless extension candidates. Maximal degree in co-relation 35267. Up to 4017 conditions per place. [2023-11-17 12:21:27,950 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 125 selfloop transitions, 11 changer transitions 0/140 dead transitions. [2023-11-17 12:21:27,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 140 transitions, 980 flow [2023-11-17 12:21:27,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:21:27,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:21:27,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 205 transitions. [2023-11-17 12:21:27,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2023-11-17 12:21:27,952 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 205 transitions. [2023-11-17 12:21:27,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 205 transitions. [2023-11-17 12:21:27,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:27,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 205 transitions. [2023-11-17 12:21:27,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:27,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:27,953 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:27,953 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 262 flow. Second operand 6 states and 205 transitions. [2023-11-17 12:21:27,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 140 transitions, 980 flow [2023-11-17 12:21:27,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 140 transitions, 954 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-17 12:21:27,984 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 343 flow [2023-11-17 12:21:27,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=343, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2023-11-17 12:21:27,985 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2023-11-17 12:21:27,985 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 343 flow [2023-11-17 12:21:27,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:27,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:27,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:27,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 12:21:28,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-17 12:21:28,191 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 12:21:28,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:28,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1630089342, now seen corresponding path program 2 times [2023-11-17 12:21:28,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:28,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799447037] [2023-11-17 12:21:28,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:28,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:28,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:21:28,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:28,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799447037] [2023-11-17 12:21:28,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799447037] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:21:28,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667513706] [2023-11-17 12:21:28,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:21:28,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:21:28,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:21:28,391 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) [2023-11-17 12:21:28,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 12:21:28,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:21:28,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:21:28,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 12:21:28,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:21:28,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:21:28,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:21:28,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:21:28,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667513706] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:21:28,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:21:28,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 12 [2023-11-17 12:21:28,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187175693] [2023-11-17 12:21:28,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:28,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:21:28,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:28,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:21:28,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-17 12:21:28,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 64 [2023-11-17 12:21:28,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:28,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:28,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 64 [2023-11-17 12:21:28,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:29,607 INFO L124 PetriNetUnfolderBase]: 8496/11375 cut-off events. [2023-11-17 12:21:29,607 INFO L125 PetriNetUnfolderBase]: For 27522/27522 co-relation queries the response was YES. [2023-11-17 12:21:29,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42467 conditions, 11375 events. 8496/11375 cut-off events. For 27522/27522 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 50304 event pairs, 1389 based on Foata normal form. 368/11742 useless extension candidates. Maximal degree in co-relation 42433. Up to 6027 conditions per place. [2023-11-17 12:21:29,652 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 129 selfloop transitions, 13 changer transitions 0/142 dead transitions. [2023-11-17 12:21:29,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 142 transitions, 1117 flow [2023-11-17 12:21:29,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:21:29,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:21:29,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2023-11-17 12:21:29,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37723214285714285 [2023-11-17 12:21:29,654 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 169 transitions. [2023-11-17 12:21:29,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 169 transitions. [2023-11-17 12:21:29,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:29,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 169 transitions. [2023-11-17 12:21:29,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:29,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 64.0) internal successors, (512), 8 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:29,655 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 64.0) internal successors, (512), 8 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:29,655 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 343 flow. Second operand 7 states and 169 transitions. [2023-11-17 12:21:29,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 142 transitions, 1117 flow [2023-11-17 12:21:29,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 142 transitions, 1114 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 12:21:29,680 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 408 flow [2023-11-17 12:21:29,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=408, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2023-11-17 12:21:29,681 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2023-11-17 12:21:29,681 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 408 flow [2023-11-17 12:21:29,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:29,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:29,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:29,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 12:21:29,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:21:29,888 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 12:21:29,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:29,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2090961147, now seen corresponding path program 1 times [2023-11-17 12:21:29,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:29,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793345985] [2023-11-17 12:21:29,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:29,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:32,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:21:32,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:32,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793345985] [2023-11-17 12:21:32,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793345985] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:21:32,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545322132] [2023-11-17 12:21:32,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:32,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:21:32,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:21:32,581 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) [2023-11-17 12:21:32,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 12:21:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:32,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-17 12:21:32,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:21:32,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-17 12:21:33,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-17 12:21:33,120 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-17 12:21:33,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-17 12:21:33,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:21:33,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:21:33,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:21:33,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:21:33,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:21:33,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:21:33,958 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 12:21:33,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2023-11-17 12:21:34,319 INFO L349 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2023-11-17 12:21:34,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 38 [2023-11-17 12:21:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:21:34,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:21:35,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:21:35,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 217 treesize of output 157 [2023-11-17 12:21:36,143 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:21:36,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1045484002 treesize of output 1026608078 [2023-11-17 12:21:42,517 WARN L293 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 6206 DAG size of output: 1109 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-17 12:21:42,709 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:21:42,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 59010 treesize of output 52298 [2023-11-17 12:21:43,841 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:21:43,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 52098 treesize of output 51434 [2023-11-17 12:21:45,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:21:45,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 51234 treesize of output 49706 [2023-11-17 12:21:46,364 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:21:46,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 49506 treesize of output 46250 [2023-11-17 12:21:47,747 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:21:47,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41964 treesize of output 30782 [2023-11-17 12:28:58,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2023-11-17 12:28:58,871 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-17 12:28:58,872 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-17 12:28:58,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 12:28:59,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:28:59,078 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:268) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:410) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:394) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 69 more [2023-11-17 12:28:59,085 INFO L158 Benchmark]: Toolchain (without parser) took 464138.60ms. Allocated memory was 269.5MB in the beginning and 2.5GB in the end (delta: 2.2GB). Free memory was 215.6MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-11-17 12:28:59,086 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 224.4MB. Free memory was 174.8MB in the beginning and 174.6MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:28:59,086 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.45ms. Allocated memory is still 269.5MB. Free memory was 215.4MB in the beginning and 202.4MB in the end (delta: 13.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-17 12:28:59,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.29ms. Allocated memory is still 269.5MB. Free memory was 202.2MB in the beginning and 199.3MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 12:28:59,086 INFO L158 Benchmark]: Boogie Preprocessor took 39.65ms. Allocated memory is still 269.5MB. Free memory was 199.3MB in the beginning and 197.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:28:59,086 INFO L158 Benchmark]: RCFGBuilder took 886.73ms. Allocated memory is still 269.5MB. Free memory was 196.8MB in the beginning and 217.3MB in the end (delta: -20.5MB). Peak memory consumption was 43.1MB. Max. memory is 8.0GB. [2023-11-17 12:28:59,086 INFO L158 Benchmark]: TraceAbstraction took 462868.89ms. Allocated memory was 269.5MB in the beginning and 2.5GB in the end (delta: 2.2GB). Free memory was 216.2MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-11-17 12:28:59,087 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 224.4MB. Free memory was 174.8MB in the beginning and 174.6MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 295.45ms. Allocated memory is still 269.5MB. Free memory was 215.4MB in the beginning and 202.4MB in the end (delta: 13.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.29ms. Allocated memory is still 269.5MB. Free memory was 202.2MB in the beginning and 199.3MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.65ms. Allocated memory is still 269.5MB. Free memory was 199.3MB in the beginning and 197.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 886.73ms. Allocated memory is still 269.5MB. Free memory was 196.8MB in the beginning and 217.3MB in the end (delta: -20.5MB). Peak memory consumption was 43.1MB. Max. memory is 8.0GB. * TraceAbstraction took 462868.89ms. Allocated memory was 269.5MB in the beginning and 2.5GB in the end (delta: 2.2GB). Free memory was 216.2MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9s, 54 PlacesBefore, 43 PlacesAfterwards, 48 TransitionsBefore, 37 TransitionsAfterwards, 768 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 973 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 816, independent: 797, independent conditional: 0, independent unconditional: 797, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 463, independent: 446, independent conditional: 0, independent unconditional: 446, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 463, independent: 445, independent conditional: 0, independent unconditional: 445, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 84, independent: 37, independent conditional: 0, independent unconditional: 37, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 816, independent: 351, independent conditional: 0, independent unconditional: 351, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 463, unknown conditional: 0, unknown unconditional: 463] , Statistics on independence cache: Total cache size (in pairs): 161, Positive cache size: 154, Positive conditional cache size: 0, Positive unconditional cache size: 154, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...