/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:33:30,458 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:33:30,508 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 16:33:30,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:33:30,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:33:30,549 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:33:30,549 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:33:30,550 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:33:30,550 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:33:30,553 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:33:30,554 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:33:30,554 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:33:30,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:33:30,556 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:33:30,556 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:33:30,556 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:33:30,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:33:30,556 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:33:30,557 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:33:30,557 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:33:30,557 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:33:30,558 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:33:30,558 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:33:30,558 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:33:30,558 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:33:30,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:33:30,558 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:33:30,559 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:33:30,559 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:33:30,559 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:33:30,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:33:30,559 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:33:30,559 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:33:30,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:33:30,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:33:30,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:33:30,853 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:33:30,854 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:33:30,855 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2023-11-17 16:33:32,081 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:33:32,273 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:33:32,274 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2023-11-17 16:33:32,280 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30719bb56/4e1b30b03f8f484383fb15d6e40b620e/FLAGab7988f20 [2023-11-17 16:33:32,292 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30719bb56/4e1b30b03f8f484383fb15d6e40b620e [2023-11-17 16:33:32,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:33:32,296 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:33:32,296 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:33:32,297 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:33:32,300 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:33:32,301 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:33:32" (1/1) ... [2023-11-17 16:33:32,302 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@475c988b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:32, skipping insertion in model container [2023-11-17 16:33:32,302 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:33:32" (1/1) ... [2023-11-17 16:33:32,328 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:33:32,472 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-three-array-sum.wvr.c[2730,2743] [2023-11-17 16:33:32,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:33:32,487 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:33:32,510 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-three-array-sum.wvr.c[2730,2743] [2023-11-17 16:33:32,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:33:32,519 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:33:32,520 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:33:32,526 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:33:32,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:32 WrapperNode [2023-11-17 16:33:32,527 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:33:32,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:33:32,528 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:33:32,528 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:33:32,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:32" (1/1) ... [2023-11-17 16:33:32,540 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:32" (1/1) ... [2023-11-17 16:33:32,565 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 156 [2023-11-17 16:33:32,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:33:32,566 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:33:32,566 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:33:32,566 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:33:32,577 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:32" (1/1) ... [2023-11-17 16:33:32,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:32" (1/1) ... [2023-11-17 16:33:32,581 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:32" (1/1) ... [2023-11-17 16:33:32,581 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:32" (1/1) ... [2023-11-17 16:33:32,588 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:32" (1/1) ... [2023-11-17 16:33:32,592 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:32" (1/1) ... [2023-11-17 16:33:32,594 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:32" (1/1) ... [2023-11-17 16:33:32,595 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:32" (1/1) ... [2023-11-17 16:33:32,598 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:33:32,599 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:33:32,599 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:33:32,599 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:33:32,600 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:32" (1/1) ... [2023-11-17 16:33:32,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:33:32,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:33:32,646 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 16:33:32,672 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 16:33:32,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:33:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:33:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:33:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:33:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:33:32,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:33:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:33:32,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:33:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 16:33:32,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 16:33:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:33:32,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:33:32,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:33:32,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 16:33:32,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:33:32,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:33:32,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:33:32,685 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 16:33:32,799 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:33:32,801 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:33:33,071 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:33:33,107 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:33:33,107 INFO L307 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-17 16:33:33,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:33:33 BoogieIcfgContainer [2023-11-17 16:33:33,109 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:33:33,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:33:33,111 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:33:33,114 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:33:33,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:33:32" (1/3) ... [2023-11-17 16:33:33,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74569247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:33:33, skipping insertion in model container [2023-11-17 16:33:33,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:32" (2/3) ... [2023-11-17 16:33:33,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74569247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:33:33, skipping insertion in model container [2023-11-17 16:33:33,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:33:33" (3/3) ... [2023-11-17 16:33:33,117 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2023-11-17 16:33:33,163 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:33:33,163 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:33:33,164 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:33:33,251 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 16:33:33,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 237 transitions, 495 flow [2023-11-17 16:33:33,364 INFO L124 PetriNetUnfolderBase]: 20/234 cut-off events. [2023-11-17 16:33:33,365 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:33:33,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 234 events. 20/234 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 173 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 191. Up to 2 conditions per place. [2023-11-17 16:33:33,370 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 237 transitions, 495 flow [2023-11-17 16:33:33,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 223 transitions, 464 flow [2023-11-17 16:33:33,379 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:33:33,392 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 223 transitions, 464 flow [2023-11-17 16:33:33,395 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 223 transitions, 464 flow [2023-11-17 16:33:33,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 223 transitions, 464 flow [2023-11-17 16:33:33,437 INFO L124 PetriNetUnfolderBase]: 20/223 cut-off events. [2023-11-17 16:33:33,437 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:33:33,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 223 events. 20/223 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 174 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 191. Up to 2 conditions per place. [2023-11-17 16:33:33,440 INFO L119 LiptonReduction]: Number of co-enabled transitions 2346 [2023-11-17 16:33:39,486 INFO L134 LiptonReduction]: Checked pairs total: 2852 [2023-11-17 16:33:39,486 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-11-17 16:33:39,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:33:39,505 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;@131a135e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:33:39,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 16:33:39,511 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:33:39,512 INFO L124 PetriNetUnfolderBase]: 7/30 cut-off events. [2023-11-17 16:33:39,512 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:33:39,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:33:39,513 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] [2023-11-17 16:33:39,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:33:39,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:33:39,518 INFO L85 PathProgramCache]: Analyzing trace with hash 156768027, now seen corresponding path program 1 times [2023-11-17 16:33:39,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:33:39,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589013181] [2023-11-17 16:33:39,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:39,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:33:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:40,178 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 16:33:40,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:33:40,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589013181] [2023-11-17 16:33:40,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589013181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:33:40,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:33:40,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 16:33:40,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030469997] [2023-11-17 16:33:40,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:33:40,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:33:40,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:33:40,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:33:40,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:33:40,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 465 [2023-11-17 16:33:40,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 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 16:33:40,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:33:40,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 465 [2023-11-17 16:33:40,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:33:40,433 INFO L124 PetriNetUnfolderBase]: 743/1056 cut-off events. [2023-11-17 16:33:40,433 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-11-17 16:33:40,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2209 conditions, 1056 events. 743/1056 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3530 event pairs, 241 based on Foata normal form. 1/770 useless extension candidates. Maximal degree in co-relation 1762. Up to 568 conditions per place. [2023-11-17 16:33:40,444 INFO L140 encePairwiseOnDemand]: 461/465 looper letters, 49 selfloop transitions, 3 changer transitions 1/53 dead transitions. [2023-11-17 16:33:40,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 245 flow [2023-11-17 16:33:40,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:33:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:33:40,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2023-11-17 16:33:40,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4881720430107527 [2023-11-17 16:33:40,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2023-11-17 16:33:40,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2023-11-17 16:33:40,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:33:40,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2023-11-17 16:33:40,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 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 16:33:40,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 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 16:33:40,485 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 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 16:33:40,486 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 80 flow. Second operand 3 states and 681 transitions. [2023-11-17 16:33:40,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 245 flow [2023-11-17 16:33:40,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 53 transitions, 223 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 16:33:40,493 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 87 flow [2023-11-17 16:33:40,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2023-11-17 16:33:40,498 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-11-17 16:33:40,499 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 87 flow [2023-11-17 16:33:40,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 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 16:33:40,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:33:40,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:33:40,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:33:40,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:33:40,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:33:40,502 INFO L85 PathProgramCache]: Analyzing trace with hash -357804513, now seen corresponding path program 1 times [2023-11-17 16:33:40,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:33:40,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000287254] [2023-11-17 16:33:40,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:40,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:33:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:40,656 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 16:33:40,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:33:40,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000287254] [2023-11-17 16:33:40,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000287254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:33:40,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:33:40,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:33:40,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213545097] [2023-11-17 16:33:40,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:33:40,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:33:40,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:33:40,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:33:40,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:33:40,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 465 [2023-11-17 16:33:40,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 0 states have call successors, (0), 0 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 16:33:40,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:33:40,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 465 [2023-11-17 16:33:40,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:33:40,940 INFO L124 PetriNetUnfolderBase]: 1189/1743 cut-off events. [2023-11-17 16:33:40,940 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-11-17 16:33:40,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3821 conditions, 1743 events. 1189/1743 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6512 event pairs, 604 based on Foata normal form. 0/1329 useless extension candidates. Maximal degree in co-relation 1738. Up to 1057 conditions per place. [2023-11-17 16:33:40,949 INFO L140 encePairwiseOnDemand]: 455/465 looper letters, 68 selfloop transitions, 14 changer transitions 0/82 dead transitions. [2023-11-17 16:33:40,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 82 transitions, 369 flow [2023-11-17 16:33:40,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:33:40,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:33:40,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1046 transitions. [2023-11-17 16:33:40,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.374910394265233 [2023-11-17 16:33:40,952 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1046 transitions. [2023-11-17 16:33:40,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1046 transitions. [2023-11-17 16:33:40,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:33:40,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1046 transitions. [2023-11-17 16:33:40,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 174.33333333333334) internal successors, (1046), 6 states have internal predecessors, (1046), 0 states have call successors, (0), 0 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 16:33:40,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 0 states have call successors, (0), 0 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 16:33:40,961 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 0 states have call successors, (0), 0 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 16:33:40,961 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 87 flow. Second operand 6 states and 1046 transitions. [2023-11-17 16:33:40,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 82 transitions, 369 flow [2023-11-17 16:33:40,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 82 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:33:40,963 INFO L231 Difference]: Finished difference. Result has 39 places, 45 transitions, 180 flow [2023-11-17 16:33:40,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=39, PETRI_TRANSITIONS=45} [2023-11-17 16:33:40,964 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-11-17 16:33:40,964 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 45 transitions, 180 flow [2023-11-17 16:33:40,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 0 states have call successors, (0), 0 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 16:33:40,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:33:40,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:33:40,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:33:40,966 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:33:40,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:33:40,966 INFO L85 PathProgramCache]: Analyzing trace with hash -2143918962, now seen corresponding path program 1 times [2023-11-17 16:33:40,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:33:40,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097180731] [2023-11-17 16:33:40,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:40,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:33:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:41,067 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 16:33:41,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:33:41,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097180731] [2023-11-17 16:33:41,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097180731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:33:41,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:33:41,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:33:41,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062761029] [2023-11-17 16:33:41,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:33:41,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:33:41,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:33:41,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:33:41,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:33:41,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 465 [2023-11-17 16:33:41,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 45 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 163.8) internal successors, (819), 5 states have internal predecessors, (819), 0 states have call successors, (0), 0 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 16:33:41,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:33:41,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 465 [2023-11-17 16:33:41,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:33:41,318 INFO L124 PetriNetUnfolderBase]: 917/1341 cut-off events. [2023-11-17 16:33:41,318 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2023-11-17 16:33:41,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 1341 events. 917/1341 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4648 event pairs, 569 based on Foata normal form. 0/1088 useless extension candidates. Maximal degree in co-relation 2450. Up to 1057 conditions per place. [2023-11-17 16:33:41,325 INFO L140 encePairwiseOnDemand]: 455/465 looper letters, 30 selfloop transitions, 6 changer transitions 39/75 dead transitions. [2023-11-17 16:33:41,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 75 transitions, 414 flow [2023-11-17 16:33:41,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:33:41,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:33:41,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1028 transitions. [2023-11-17 16:33:41,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36845878136200716 [2023-11-17 16:33:41,328 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1028 transitions. [2023-11-17 16:33:41,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1028 transitions. [2023-11-17 16:33:41,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:33:41,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1028 transitions. [2023-11-17 16:33:41,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 171.33333333333334) internal successors, (1028), 6 states have internal predecessors, (1028), 0 states have call successors, (0), 0 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 16:33:41,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 0 states have call successors, (0), 0 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 16:33:41,337 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 0 states have call successors, (0), 0 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 16:33:41,337 INFO L175 Difference]: Start difference. First operand has 39 places, 45 transitions, 180 flow. Second operand 6 states and 1028 transitions. [2023-11-17 16:33:41,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 75 transitions, 414 flow [2023-11-17 16:33:41,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 75 transitions, 414 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 16:33:41,342 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 146 flow [2023-11-17 16:33:41,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2023-11-17 16:33:41,343 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-11-17 16:33:41,343 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 146 flow [2023-11-17 16:33:41,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 163.8) internal successors, (819), 5 states have internal predecessors, (819), 0 states have call successors, (0), 0 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 16:33:41,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:33:41,344 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] [2023-11-17 16:33:41,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 16:33:41,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:33:41,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:33:41,345 INFO L85 PathProgramCache]: Analyzing trace with hash -864538355, now seen corresponding path program 1 times [2023-11-17 16:33:41,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:33:41,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910268055] [2023-11-17 16:33:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:41,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:33:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:41,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:33:41,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:33:41,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910268055] [2023-11-17 16:33:41,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910268055] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:33:41,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313536519] [2023-11-17 16:33:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:41,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:41,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:33:41,452 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 16:33:41,457 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 16:33:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:41,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:33:41,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:33:41,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:33:41,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:33:41,715 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 16:33:41,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313536519] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:33:41,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:33:41,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-11-17 16:33:41,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504185246] [2023-11-17 16:33:41,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:33:41,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:33:41,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:33:41,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:33:41,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:33:41,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 465 [2023-11-17 16:33:41,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 166.4) internal successors, (832), 5 states have internal predecessors, (832), 0 states have call successors, (0), 0 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 16:33:41,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:33:41,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 465 [2023-11-17 16:33:41,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:33:41,923 INFO L124 PetriNetUnfolderBase]: 978/1386 cut-off events. [2023-11-17 16:33:41,923 INFO L125 PetriNetUnfolderBase]: For 384/384 co-relation queries the response was YES. [2023-11-17 16:33:41,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3489 conditions, 1386 events. 978/1386 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4835 event pairs, 476 based on Foata normal form. 0/1125 useless extension candidates. Maximal degree in co-relation 3443. Up to 1058 conditions per place. [2023-11-17 16:33:41,930 INFO L140 encePairwiseOnDemand]: 460/465 looper letters, 49 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2023-11-17 16:33:41,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 308 flow [2023-11-17 16:33:41,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:33:41,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:33:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 853 transitions. [2023-11-17 16:33:41,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3668817204301075 [2023-11-17 16:33:41,933 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 853 transitions. [2023-11-17 16:33:41,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 853 transitions. [2023-11-17 16:33:41,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:33:41,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 853 transitions. [2023-11-17 16:33:41,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 0 states have call successors, (0), 0 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 16:33:41,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 0 states have call successors, (0), 0 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 16:33:41,940 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 0 states have call successors, (0), 0 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 16:33:41,940 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 146 flow. Second operand 5 states and 853 transitions. [2023-11-17 16:33:41,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 308 flow [2023-11-17 16:33:41,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 53 transitions, 260 flow, removed 15 selfloop flow, removed 8 redundant places. [2023-11-17 16:33:41,945 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 126 flow [2023-11-17 16:33:41,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-11-17 16:33:41,946 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-11-17 16:33:41,946 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 126 flow [2023-11-17 16:33:41,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.4) internal successors, (832), 5 states have internal predecessors, (832), 0 states have call successors, (0), 0 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 16:33:41,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:33:41,947 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 16:33:41,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-17 16:33:42,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:42,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:33:42,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:33:42,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1899938680, now seen corresponding path program 1 times [2023-11-17 16:33:42,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:33:42,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698832642] [2023-11-17 16:33:42,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:42,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:33:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:33:42,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:33:42,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698832642] [2023-11-17 16:33:42,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698832642] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:33:42,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057423820] [2023-11-17 16:33:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:42,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:42,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:33:42,311 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 16:33:42,333 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 16:33:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:42,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:33:42,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:33:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:33:42,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:33:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:33:42,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057423820] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:33:42,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:33:42,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-11-17 16:33:42,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904461020] [2023-11-17 16:33:42,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:33:42,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:33:42,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:33:42,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:33:42,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:33:42,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 465 [2023-11-17 16:33:42,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 166.6) internal successors, (833), 5 states have internal predecessors, (833), 0 states have call successors, (0), 0 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 16:33:42,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:33:42,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 465 [2023-11-17 16:33:42,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:33:42,757 INFO L124 PetriNetUnfolderBase]: 1020/1427 cut-off events. [2023-11-17 16:33:42,757 INFO L125 PetriNetUnfolderBase]: For 530/530 co-relation queries the response was YES. [2023-11-17 16:33:42,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3538 conditions, 1427 events. 1020/1427 cut-off events. For 530/530 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4729 event pairs, 337 based on Foata normal form. 0/1080 useless extension candidates. Maximal degree in co-relation 3499. Up to 720 conditions per place. [2023-11-17 16:33:42,764 INFO L140 encePairwiseOnDemand]: 458/465 looper letters, 46 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2023-11-17 16:33:42,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 280 flow [2023-11-17 16:33:42,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:33:42,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:33:42,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 852 transitions. [2023-11-17 16:33:42,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664516129032258 [2023-11-17 16:33:42,768 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 852 transitions. [2023-11-17 16:33:42,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 852 transitions. [2023-11-17 16:33:42,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:33:42,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 852 transitions. [2023-11-17 16:33:42,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.4) internal successors, (852), 5 states have internal predecessors, (852), 0 states have call successors, (0), 0 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 16:33:42,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 0 states have call successors, (0), 0 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 16:33:42,775 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 0 states have call successors, (0), 0 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 16:33:42,775 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 126 flow. Second operand 5 states and 852 transitions. [2023-11-17 16:33:42,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 280 flow [2023-11-17 16:33:42,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 53 transitions, 266 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-17 16:33:42,778 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 151 flow [2023-11-17 16:33:42,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-11-17 16:33:42,780 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-11-17 16:33:42,780 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 151 flow [2023-11-17 16:33:42,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.6) internal successors, (833), 5 states have internal predecessors, (833), 0 states have call successors, (0), 0 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 16:33:42,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:33:42,781 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 16:33:42,792 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 16:33:42,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:42,987 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:33:42,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:33:42,987 INFO L85 PathProgramCache]: Analyzing trace with hash -288432215, now seen corresponding path program 1 times [2023-11-17 16:33:42,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:33:42,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847319862] [2023-11-17 16:33:42,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:42,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:33:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:33:43,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:33:43,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847319862] [2023-11-17 16:33:43,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847319862] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:33:43,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545962298] [2023-11-17 16:33:43,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:43,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:43,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:33:43,098 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 16:33:43,123 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 16:33:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:43,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:33:43,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:33:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:33:43,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:33:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:33:43,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545962298] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:33:43,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:33:43,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-11-17 16:33:43,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911239641] [2023-11-17 16:33:43,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:33:43,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:33:43,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:33:43,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:33:43,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:33:43,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 465 [2023-11-17 16:33:43,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 0 states have call successors, (0), 0 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 16:33:43,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:33:43,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 465 [2023-11-17 16:33:43,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:33:43,480 INFO L124 PetriNetUnfolderBase]: 966/1341 cut-off events. [2023-11-17 16:33:43,480 INFO L125 PetriNetUnfolderBase]: For 768/768 co-relation queries the response was YES. [2023-11-17 16:33:43,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3812 conditions, 1341 events. 966/1341 cut-off events. For 768/768 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4488 event pairs, 319 based on Foata normal form. 0/1078 useless extension candidates. Maximal degree in co-relation 3771. Up to 756 conditions per place. [2023-11-17 16:33:43,486 INFO L140 encePairwiseOnDemand]: 459/465 looper letters, 51 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-11-17 16:33:43,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 339 flow [2023-11-17 16:33:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:33:43,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:33:43,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 842 transitions. [2023-11-17 16:33:43,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3621505376344086 [2023-11-17 16:33:43,490 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 842 transitions. [2023-11-17 16:33:43,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 842 transitions. [2023-11-17 16:33:43,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:33:43,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 842 transitions. [2023-11-17 16:33:43,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.4) internal successors, (842), 5 states have internal predecessors, (842), 0 states have call successors, (0), 0 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 16:33:43,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 0 states have call successors, (0), 0 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 16:33:43,495 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 0 states have call successors, (0), 0 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 16:33:43,496 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 151 flow. Second operand 5 states and 842 transitions. [2023-11-17 16:33:43,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 339 flow [2023-11-17 16:33:43,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 326 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 16:33:43,499 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 170 flow [2023-11-17 16:33:43,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-11-17 16:33:43,501 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2023-11-17 16:33:43,501 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 170 flow [2023-11-17 16:33:43,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 0 states have call successors, (0), 0 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 16:33:43,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:33:43,502 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 16:33:43,510 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 16:33:43,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:43,708 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:33:43,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:33:43,708 INFO L85 PathProgramCache]: Analyzing trace with hash 232319838, now seen corresponding path program 1 times [2023-11-17 16:33:43,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:33:43,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407385546] [2023-11-17 16:33:43,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:43,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:33:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:45,263 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:33:45,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:33:45,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407385546] [2023-11-17 16:33:45,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407385546] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:33:45,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595428063] [2023-11-17 16:33:45,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:45,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:45,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:33:45,265 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 16:33:45,292 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 16:33:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:45,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-17 16:33:45,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:33:46,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:33:46,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:33:46,032 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 16:33:46,033 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 23 treesize of output 21 [2023-11-17 16:33:46,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:33:46,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:33:46,111 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 16:33:46,111 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 23 treesize of output 21 [2023-11-17 16:33:46,273 INFO L349 Elim1Store]: treesize reduction 36, result has 52.0 percent of original size [2023-11-17 16:33:46,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 54 [2023-11-17 16:33:47,189 INFO L349 Elim1Store]: treesize reduction 72, result has 71.1 percent of original size [2023-11-17 16:33:47,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 120 treesize of output 244 [2023-11-17 16:33:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:33:48,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:34:10,812 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_260 (Array Int Int))) (= (mod (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_260))) (+ (select (select .cse0 c_~A~0.base) c_~A~0.offset) c_~csum~0 (select (select .cse0 c_~B~0.base) c_~B~0.offset))) 4294967296) (mod (+ c_~asum~0 c_~bsum~0) 4294967296))) is different from false [2023-11-17 16:34:10,828 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_259 (Array Int Int)) (v_ArrVal_260 (Array Int Int))) (= (mod (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_259) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_260))) (+ (select (select .cse0 c_~B~0.base) c_~B~0.offset) (select (select .cse0 c_~A~0.base) c_~A~0.offset) c_~csum~0)) 4294967296) (mod (+ c_~asum~0 c_~bsum~0) 4294967296))) is different from false [2023-11-17 16:34:10,839 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_259 (Array Int Int)) (v_ArrVal_260 (Array Int Int))) (= (mod (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_259) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_260))) (+ (select (select .cse0 c_~B~0.base) c_~B~0.offset) (select (select .cse0 c_~A~0.base) c_~A~0.offset) c_~csum~0)) 4294967296) (mod (+ (select (select |c_#memory_int| c_~B~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~B~0.offset)) c_~asum~0 |c_thread1Thread1of1ForFork2_#t~mem2| c_~bsum~0) 4294967296))) is different from false [2023-11-17 16:34:10,938 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:34:10,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1430 treesize of output 922 [2023-11-17 16:34:10,973 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:34:10,973 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 422 treesize of output 414 [2023-11-17 16:34:10,997 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:34:10,998 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 406 treesize of output 382 [2023-11-17 16:39:19,697 WARN L293 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 3394 DAG size of output: 3406 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-11-17 16:42:30,680 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:42:30,694 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:42:30,800 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 16:42:30,812 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 16:42:31,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:42:31,007 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while QuantifierPusher was running 1 iterations on subformula. [2023-11-17 16:42:31,008 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 16:42:31,009 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 16:42:31,009 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 16:42:31,009 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:42:31,012 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:42:31,012 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:42:31,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:42:31 BasicIcfg [2023-11-17 16:42:31,015 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:42:31,015 INFO L158 Benchmark]: Toolchain (without parser) took 538719.84ms. Allocated memory was 187.7MB in the beginning and 574.6MB in the end (delta: 386.9MB). Free memory was 142.8MB in the beginning and 347.7MB in the end (delta: -204.9MB). Peak memory consumption was 343.2MB. Max. memory is 8.0GB. [2023-11-17 16:42:31,015 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 187.7MB. Free memory is still 145.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:42:31,016 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.48ms. Allocated memory is still 187.7MB. Free memory was 142.8MB in the beginning and 130.9MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 16:42:31,016 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.24ms. Allocated memory is still 187.7MB. Free memory was 130.9MB in the beginning and 128.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:42:31,016 INFO L158 Benchmark]: Boogie Preprocessor took 31.76ms. Allocated memory is still 187.7MB. Free memory was 128.8MB in the beginning and 126.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:42:31,016 INFO L158 Benchmark]: RCFGBuilder took 510.44ms. Allocated memory is still 187.7MB. Free memory was 126.8MB in the beginning and 104.0MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-11-17 16:42:31,017 INFO L158 Benchmark]: TraceAbstraction took 537903.99ms. Allocated memory was 187.7MB in the beginning and 574.6MB in the end (delta: 386.9MB). Free memory was 103.3MB in the beginning and 347.7MB in the end (delta: -244.4MB). Peak memory consumption was 303.3MB. Max. memory is 8.0GB. [2023-11-17 16:42:31,018 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 187.7MB. Free memory is still 145.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 230.48ms. Allocated memory is still 187.7MB. Free memory was 142.8MB in the beginning and 130.9MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.24ms. Allocated memory is still 187.7MB. Free memory was 130.9MB in the beginning and 128.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.76ms. Allocated memory is still 187.7MB. Free memory was 128.8MB in the beginning and 126.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 510.44ms. Allocated memory is still 187.7MB. Free memory was 126.8MB in the beginning and 104.0MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 537903.99ms. Allocated memory was 187.7MB in the beginning and 574.6MB in the end (delta: 386.9MB). Free memory was 103.3MB in the beginning and 347.7MB in the end (delta: -244.4MB). Peak memory consumption was 303.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.1s, 213 PlacesBefore, 34 PlacesAfterwards, 223 TransitionsBefore, 31 TransitionsAfterwards, 2346 CoEnabledTransitionPairs, 7 FixpointIterations, 137 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 32 TrivialYvCompositions, 8 ConcurrentYvCompositions, 13 ChoiceCompositions, 228 TotalNumberOfCompositions, 2852 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2457, independent: 2399, independent conditional: 0, independent unconditional: 2399, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1614, independent: 1588, independent conditional: 0, independent unconditional: 1588, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1614, independent: 1588, independent conditional: 0, independent unconditional: 1588, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 83, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2457, independent: 811, independent conditional: 0, independent unconditional: 811, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 1614, unknown conditional: 0, unknown unconditional: 1614] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 108, Positive conditional cache size: 0, Positive unconditional cache size: 108, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while QuantifierPusher was running 1 iterations on subformula. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while QuantifierPusher was running 1 iterations on subformula. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while QuantifierPusher was running 1 iterations on subformula. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while QuantifierPusher was running 1 iterations on subformula. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 261 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 537.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 184 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 184 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 559 IncrementalHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 0 mSDtfsCounter, 559 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 188 GetRequests, 152 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=180occurred in iteration=2, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 236 NumberOfCodeBlocks, 236 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 307 ConstructedInterpolants, 0 QuantifiedInterpolants, 924 SizeOfPredicates, 8 NumberOfNonLiveVariables, 875 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 38/44 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown