/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-min-max-dec.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:14:29,083 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:14:29,147 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 16:14:29,192 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:14:29,193 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:14:29,193 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:14:29,194 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:14:29,194 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:14:29,194 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:14:29,195 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:14:29,195 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:14:29,195 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:14:29,195 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:14:29,196 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:14:29,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:14:29,196 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:14:29,196 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:14:29,196 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:14:29,197 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:14:29,197 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:14:29,197 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:14:29,198 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:14:29,198 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:14:29,198 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:14:29,198 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:14:29,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:14:29,199 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:14:29,199 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:14:29,199 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:14:29,199 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:14:29,199 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:14:29,200 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:14:29,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:14:29,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:14:29,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:14:29,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:14:29,334 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:14:29,335 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:14:29,335 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c [2023-11-17 16:14:30,298 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:14:30,459 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:14:30,460 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c [2023-11-17 16:14:30,465 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/693fc7490/6db43bfd62e849d2a08e9e9f92270485/FLAGdb2de6e01 [2023-11-17 16:14:30,887 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/693fc7490/6db43bfd62e849d2a08e9e9f92270485 [2023-11-17 16:14:30,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:14:30,891 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:14:30,892 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:14:30,892 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:14:30,895 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:14:30,895 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:14:30" (1/1) ... [2023-11-17 16:14:30,896 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c579870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:30, skipping insertion in model container [2023-11-17 16:14:30,896 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:14:30" (1/1) ... [2023-11-17 16:14:30,928 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:14:31,087 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-min-max-dec.wvr.c[3071,3084] [2023-11-17 16:14:31,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:14:31,100 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:14:31,122 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-min-max-dec.wvr.c[3071,3084] [2023-11-17 16:14:31,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:14:31,129 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:14:31,129 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:14:31,140 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:14:31,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:31 WrapperNode [2023-11-17 16:14:31,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:14:31,142 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:14:31,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:14:31,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:14:31,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:31" (1/1) ... [2023-11-17 16:14:31,154 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:31" (1/1) ... [2023-11-17 16:14:31,178 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 141 [2023-11-17 16:14:31,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:14:31,179 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:14:31,179 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:14:31,180 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:14:31,186 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:31" (1/1) ... [2023-11-17 16:14:31,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:31" (1/1) ... [2023-11-17 16:14:31,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:31" (1/1) ... [2023-11-17 16:14:31,188 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:31" (1/1) ... [2023-11-17 16:14:31,193 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:31" (1/1) ... [2023-11-17 16:14:31,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:31" (1/1) ... [2023-11-17 16:14:31,197 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:31" (1/1) ... [2023-11-17 16:14:31,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:31" (1/1) ... [2023-11-17 16:14:31,200 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:14:31,201 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:14:31,201 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:14:31,201 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:14:31,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:31" (1/1) ... [2023-11-17 16:14:31,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:14:31,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:31,232 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 16:14:31,249 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 16:14:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:14:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:14:31,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:14:31,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:14:31,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:14:31,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:14:31,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:14:31,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:14:31,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 16:14:31,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 16:14:31,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 16:14:31,266 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 16:14:31,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:14:31,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:14:31,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:14:31,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 16:14:31,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:14:31,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:14:31,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:14:31,269 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 16:14:31,401 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:14:31,403 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:14:31,626 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:14:31,683 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:14:31,684 INFO L307 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-17 16:14:31,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:14:31 BoogieIcfgContainer [2023-11-17 16:14:31,685 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:14:31,687 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:14:31,687 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:14:31,689 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:14:31,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:14:30" (1/3) ... [2023-11-17 16:14:31,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff92df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:14:31, skipping insertion in model container [2023-11-17 16:14:31,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:31" (2/3) ... [2023-11-17 16:14:31,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff92df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:14:31, skipping insertion in model container [2023-11-17 16:14:31,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:14:31" (3/3) ... [2023-11-17 16:14:31,691 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2023-11-17 16:14:31,705 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:14:31,705 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:14:31,705 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:14:31,800 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 16:14:31,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 178 transitions, 384 flow [2023-11-17 16:14:31,922 INFO L124 PetriNetUnfolderBase]: 12/174 cut-off events. [2023-11-17 16:14:31,922 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 16:14:31,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 174 events. 12/174 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 144 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2023-11-17 16:14:31,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 178 transitions, 384 flow [2023-11-17 16:14:31,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 161 transitions, 346 flow [2023-11-17 16:14:31,941 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:14:31,955 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 161 transitions, 346 flow [2023-11-17 16:14:31,958 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 161 transitions, 346 flow [2023-11-17 16:14:31,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 161 transitions, 346 flow [2023-11-17 16:14:32,005 INFO L124 PetriNetUnfolderBase]: 12/161 cut-off events. [2023-11-17 16:14:32,005 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 16:14:32,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 161 events. 12/161 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 143 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2023-11-17 16:14:32,009 INFO L119 LiptonReduction]: Number of co-enabled transitions 2932 [2023-11-17 16:14:36,823 INFO L134 LiptonReduction]: Checked pairs total: 3990 [2023-11-17 16:14:36,823 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-11-17 16:14:36,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:14:36,842 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;@2092952f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:14:36,842 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 16:14:36,847 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:14:36,847 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2023-11-17 16:14:36,848 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 16:14:36,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:36,848 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 16:14:36,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:14:36,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:36,852 INFO L85 PathProgramCache]: Analyzing trace with hash -2126012816, now seen corresponding path program 1 times [2023-11-17 16:14:36,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:36,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973640517] [2023-11-17 16:14:36,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:36,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:37,208 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 16:14:37,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:37,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973640517] [2023-11-17 16:14:37,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973640517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:14:37,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:14:37,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:14:37,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640667179] [2023-11-17 16:14:37,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:14:37,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:14:37,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:37,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:14:37,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:14:37,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 328 [2023-11-17 16:14:37,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 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 16:14:37,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:37,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 328 [2023-11-17 16:14:37,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:37,458 INFO L124 PetriNetUnfolderBase]: 1312/1790 cut-off events. [2023-11-17 16:14:37,458 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-11-17 16:14:37,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3791 conditions, 1790 events. 1312/1790 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5905 event pairs, 787 based on Foata normal form. 0/1455 useless extension candidates. Maximal degree in co-relation 3330. Up to 1474 conditions per place. [2023-11-17 16:14:37,470 INFO L140 encePairwiseOnDemand]: 324/328 looper letters, 44 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-11-17 16:14:37,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 221 flow [2023-11-17 16:14:37,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:14:37,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:14:37,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 616 transitions. [2023-11-17 16:14:37,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4695121951219512 [2023-11-17 16:14:37,484 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 616 transitions. [2023-11-17 16:14:37,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 616 transitions. [2023-11-17 16:14:37,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:37,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 616 transitions. [2023-11-17 16:14:37,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 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 16:14:37,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 16:14:37,497 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 16:14:37,498 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 86 flow. Second operand 4 states and 616 transitions. [2023-11-17 16:14:37,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 221 flow [2023-11-17 16:14:37,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 47 transitions, 199 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-17 16:14:37,505 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 84 flow [2023-11-17 16:14:37,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2023-11-17 16:14:37,511 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2023-11-17 16:14:37,511 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 84 flow [2023-11-17 16:14:37,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 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 16:14:37,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:37,512 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 16:14:37,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:14:37,512 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:14:37,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:37,520 INFO L85 PathProgramCache]: Analyzing trace with hash 234024453, now seen corresponding path program 1 times [2023-11-17 16:14:37,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:37,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448915887] [2023-11-17 16:14:37,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:37,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:37,633 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 16:14:37,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:37,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448915887] [2023-11-17 16:14:37,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448915887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:14:37,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:14:37,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:14:37,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444424244] [2023-11-17 16:14:37,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:14:37,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:14:37,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:37,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:14:37,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:14:37,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 328 [2023-11-17 16:14:37,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 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 16:14:37,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:37,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 328 [2023-11-17 16:14:37,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:37,833 INFO L124 PetriNetUnfolderBase]: 1632/2222 cut-off events. [2023-11-17 16:14:37,833 INFO L125 PetriNetUnfolderBase]: For 515/515 co-relation queries the response was YES. [2023-11-17 16:14:37,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5065 conditions, 2222 events. 1632/2222 cut-off events. For 515/515 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7613 event pairs, 977 based on Foata normal form. 0/1833 useless extension candidates. Maximal degree in co-relation 1796. Up to 1790 conditions per place. [2023-11-17 16:14:37,841 INFO L140 encePairwiseOnDemand]: 324/328 looper letters, 46 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-11-17 16:14:37,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 49 transitions, 229 flow [2023-11-17 16:14:37,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:14:37,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:14:37,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 616 transitions. [2023-11-17 16:14:37,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4695121951219512 [2023-11-17 16:14:37,844 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 616 transitions. [2023-11-17 16:14:37,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 616 transitions. [2023-11-17 16:14:37,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:37,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 616 transitions. [2023-11-17 16:14:37,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 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 16:14:37,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 16:14:37,849 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 16:14:37,850 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 84 flow. Second operand 4 states and 616 transitions. [2023-11-17 16:14:37,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 49 transitions, 229 flow [2023-11-17 16:14:37,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 49 transitions, 219 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 16:14:37,852 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 92 flow [2023-11-17 16:14:37,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-11-17 16:14:37,853 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2023-11-17 16:14:37,853 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 92 flow [2023-11-17 16:14:37,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 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 16:14:37,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:37,857 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] [2023-11-17 16:14:37,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:14:37,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:14:37,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:37,862 INFO L85 PathProgramCache]: Analyzing trace with hash 2104391719, now seen corresponding path program 1 times [2023-11-17 16:14:37,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:37,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295438653] [2023-11-17 16:14:37,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:37,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:14:37,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:37,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295438653] [2023-11-17 16:14:37,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295438653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:14:37,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:14:37,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:14:37,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765267252] [2023-11-17 16:14:37,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:14:37,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:14:37,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:37,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:14:37,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:14:37,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 328 [2023-11-17 16:14:37,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 149.25) internal successors, (597), 4 states have internal predecessors, (597), 0 states have call successors, (0), 0 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 16:14:37,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:37,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 328 [2023-11-17 16:14:37,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:38,219 INFO L124 PetriNetUnfolderBase]: 2138/2902 cut-off events. [2023-11-17 16:14:38,219 INFO L125 PetriNetUnfolderBase]: For 984/984 co-relation queries the response was YES. [2023-11-17 16:14:38,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7067 conditions, 2902 events. 2138/2902 cut-off events. For 984/984 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10518 event pairs, 1243 based on Foata normal form. 0/2449 useless extension candidates. Maximal degree in co-relation 2239. Up to 2222 conditions per place. [2023-11-17 16:14:38,231 INFO L140 encePairwiseOnDemand]: 324/328 looper letters, 49 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-11-17 16:14:38,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 253 flow [2023-11-17 16:14:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:14:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:14:38,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 617 transitions. [2023-11-17 16:14:38,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47027439024390244 [2023-11-17 16:14:38,233 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 617 transitions. [2023-11-17 16:14:38,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 617 transitions. [2023-11-17 16:14:38,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:38,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 617 transitions. [2023-11-17 16:14:38,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 0 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 16:14:38,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 16:14:38,236 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 16:14:38,237 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 92 flow. Second operand 4 states and 617 transitions. [2023-11-17 16:14:38,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 253 flow [2023-11-17 16:14:38,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 243 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 16:14:38,239 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 100 flow [2023-11-17 16:14:38,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-11-17 16:14:38,239 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-11-17 16:14:38,239 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 100 flow [2023-11-17 16:14:38,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.25) internal successors, (597), 4 states have internal predecessors, (597), 0 states have call successors, (0), 0 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 16:14:38,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:38,240 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 16:14:38,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 16:14:38,240 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:14:38,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:38,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1009909101, now seen corresponding path program 1 times [2023-11-17 16:14:38,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:38,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751624923] [2023-11-17 16:14:38,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:38,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:38,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:14:38,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:38,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751624923] [2023-11-17 16:14:38,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751624923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:14:38,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:14:38,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 16:14:38,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026244599] [2023-11-17 16:14:38,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:14:38,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:14:38,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:38,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:14:38,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:14:38,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 328 [2023-11-17 16:14:38,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 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 16:14:38,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:38,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 328 [2023-11-17 16:14:38,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:38,517 INFO L124 PetriNetUnfolderBase]: 2138/2903 cut-off events. [2023-11-17 16:14:38,518 INFO L125 PetriNetUnfolderBase]: For 1286/1286 co-relation queries the response was YES. [2023-11-17 16:14:38,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7648 conditions, 2903 events. 2138/2903 cut-off events. For 1286/1286 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10165 event pairs, 1685 based on Foata normal form. 0/2450 useless extension candidates. Maximal degree in co-relation 2581. Up to 2903 conditions per place. [2023-11-17 16:14:38,530 INFO L140 encePairwiseOnDemand]: 325/328 looper letters, 33 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-11-17 16:14:38,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 172 flow [2023-11-17 16:14:38,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:14:38,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:14:38,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-11-17 16:14:38,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2023-11-17 16:14:38,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-11-17 16:14:38,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-11-17 16:14:38,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:38,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-11-17 16:14:38,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 16:14:38,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 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 16:14:38,535 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 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 16:14:38,535 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 100 flow. Second operand 3 states and 432 transitions. [2023-11-17 16:14:38,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 172 flow [2023-11-17 16:14:38,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 166 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 16:14:38,537 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 106 flow [2023-11-17 16:14:38,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-11-17 16:14:38,538 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-11-17 16:14:38,538 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 106 flow [2023-11-17 16:14:38,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 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 16:14:38,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:38,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:38,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 16:14:38,539 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:14:38,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:38,539 INFO L85 PathProgramCache]: Analyzing trace with hash -302998196, now seen corresponding path program 1 times [2023-11-17 16:14:38,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:38,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883377895] [2023-11-17 16:14:38,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:38,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:14:38,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:38,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883377895] [2023-11-17 16:14:38,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883377895] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:38,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673833731] [2023-11-17 16:14:38,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:38,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:38,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:38,943 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 16:14:38,973 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 16:14:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:39,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-17 16:14:39,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:39,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:14:39,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-17 16:14:39,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-17 16:14:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:14:39,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:39,919 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse9 (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset)) (.cse3 (+ (* c_thread1Thread1of1ForFork3_~i~0 4) c_~A~0.offset)) (.cse6 (+ c_~min~0 1))) (and (forall ((v_ArrVal_119 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_119) c_~A~0.base))) (let ((.cse0 (select .cse2 c_~A~0.offset)) (.cse1 (select .cse2 .cse3))) (or (< 2147483646 .cse0) (< .cse1 (+ 2 .cse0)) (< c_~min~0 .cse1))))) (forall ((v_ArrVal_119 (Array Int Int))) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_119) c_~A~0.base))) (let ((.cse4 (select .cse5 c_~A~0.offset))) (or (< 2147483646 .cse4) (< c_~min~0 (+ 2 .cse4)) (< (select .cse5 .cse3) .cse6))))) (forall ((v_ArrVal_119 (Array Int Int))) (let ((.cse10 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_119) c_~A~0.base))) (let ((.cse7 (select .cse10 .cse3)) (.cse8 (select .cse10 c_~A~0.offset))) (or (< .cse7 (+ 3 .cse8)) (< .cse9 (+ .cse8 1)) (< c_~min~0 .cse7) (< 2147483645 .cse8))))) (forall ((v_ArrVal_119 (Array Int Int))) (let ((.cse12 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_119) c_~A~0.base))) (let ((.cse11 (select .cse12 c_~A~0.offset))) (or (< c_~min~0 (+ 3 .cse11)) (< .cse9 (+ .cse11 1)) (< 2147483645 .cse11) (< (select .cse12 .cse3) .cse6))))))) is different from false [2023-11-17 16:14:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:14:39,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673833731] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:39,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:39,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 8] total 21 [2023-11-17 16:14:39,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231770986] [2023-11-17 16:14:39,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:39,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 16:14:39,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:39,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 16:14:39,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=339, Unknown=2, NotChecked=38, Total=462 [2023-11-17 16:14:39,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 328 [2023-11-17 16:14:39,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 106 flow. Second operand has 22 states, 22 states have (on average 121.0) internal successors, (2662), 22 states have internal predecessors, (2662), 0 states have call successors, (0), 0 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 16:14:39,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:39,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 328 [2023-11-17 16:14:39,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:45,784 INFO L124 PetriNetUnfolderBase]: 19763/27132 cut-off events. [2023-11-17 16:14:45,784 INFO L125 PetriNetUnfolderBase]: For 7425/7425 co-relation queries the response was YES. [2023-11-17 16:14:45,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69811 conditions, 27132 events. 19763/27132 cut-off events. For 7425/7425 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 150003 event pairs, 982 based on Foata normal form. 14/21619 useless extension candidates. Maximal degree in co-relation 69797. Up to 5712 conditions per place. [2023-11-17 16:14:45,872 INFO L140 encePairwiseOnDemand]: 307/328 looper letters, 375 selfloop transitions, 150 changer transitions 560/1085 dead transitions. [2023-11-17 16:14:45,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 1085 transitions, 5441 flow [2023-11-17 16:14:45,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-11-17 16:14:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2023-11-17 16:14:45,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 10024 transitions. [2023-11-17 16:14:45,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968957871396896 [2023-11-17 16:14:45,966 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 10024 transitions. [2023-11-17 16:14:45,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 10024 transitions. [2023-11-17 16:14:45,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:45,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 10024 transitions. [2023-11-17 16:14:45,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 130.1818181818182) internal successors, (10024), 77 states have internal predecessors, (10024), 0 states have call successors, (0), 0 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 16:14:46,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 328.0) internal successors, (25584), 78 states have internal predecessors, (25584), 0 states have call successors, (0), 0 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 16:14:46,016 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 328.0) internal successors, (25584), 78 states have internal predecessors, (25584), 0 states have call successors, (0), 0 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 16:14:46,016 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 106 flow. Second operand 77 states and 10024 transitions. [2023-11-17 16:14:46,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 1085 transitions, 5441 flow [2023-11-17 16:14:46,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 1085 transitions, 5437 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 16:14:46,102 INFO L231 Difference]: Finished difference. Result has 165 places, 212 transitions, 1394 flow [2023-11-17 16:14:46,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=1394, PETRI_PLACES=165, PETRI_TRANSITIONS=212} [2023-11-17 16:14:46,103 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 125 predicate places. [2023-11-17 16:14:46,105 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 212 transitions, 1394 flow [2023-11-17 16:14:46,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 121.0) internal successors, (2662), 22 states have internal predecessors, (2662), 0 states have call successors, (0), 0 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 16:14:46,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:46,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:46,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 16:14:46,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:46,313 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:14:46,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:46,313 INFO L85 PathProgramCache]: Analyzing trace with hash -869397580, now seen corresponding path program 2 times [2023-11-17 16:14:46,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:46,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238582393] [2023-11-17 16:14:46,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:46,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:14:46,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:46,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238582393] [2023-11-17 16:14:46,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238582393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:14:46,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:14:46,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 16:14:46,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843688108] [2023-11-17 16:14:46,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:14:46,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:14:46,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:46,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:14:46,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:14:46,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 328 [2023-11-17 16:14:46,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 212 transitions, 1394 flow. Second operand has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 16:14:46,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:46,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 328 [2023-11-17 16:14:46,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:49,093 INFO L124 PetriNetUnfolderBase]: 15303/21371 cut-off events. [2023-11-17 16:14:49,093 INFO L125 PetriNetUnfolderBase]: For 588982/588982 co-relation queries the response was YES. [2023-11-17 16:14:49,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162968 conditions, 21371 events. 15303/21371 cut-off events. For 588982/588982 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 117880 event pairs, 1782 based on Foata normal form. 13/21314 useless extension candidates. Maximal degree in co-relation 162899. Up to 12649 conditions per place. [2023-11-17 16:14:49,252 INFO L140 encePairwiseOnDemand]: 324/328 looper letters, 229 selfloop transitions, 9 changer transitions 291/529 dead transitions. [2023-11-17 16:14:49,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 529 transitions, 4585 flow [2023-11-17 16:14:49,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:14:49,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:14:49,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 831 transitions. [2023-11-17 16:14:49,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067073170731707 [2023-11-17 16:14:49,254 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 831 transitions. [2023-11-17 16:14:49,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 831 transitions. [2023-11-17 16:14:49,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:49,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 831 transitions. [2023-11-17 16:14:49,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.2) internal successors, (831), 5 states have internal predecessors, (831), 0 states have call successors, (0), 0 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 16:14:49,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 16:14:49,258 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 16:14:49,258 INFO L175 Difference]: Start difference. First operand has 165 places, 212 transitions, 1394 flow. Second operand 5 states and 831 transitions. [2023-11-17 16:14:49,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 529 transitions, 4585 flow [2023-11-17 16:14:51,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 529 transitions, 4278 flow, removed 152 selfloop flow, removed 27 redundant places. [2023-11-17 16:14:51,492 INFO L231 Difference]: Finished difference. Result has 105 places, 175 transitions, 1052 flow [2023-11-17 16:14:51,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=1261, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1052, PETRI_PLACES=105, PETRI_TRANSITIONS=175} [2023-11-17 16:14:51,493 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 65 predicate places. [2023-11-17 16:14:51,493 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 175 transitions, 1052 flow [2023-11-17 16:14:51,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 16:14:51,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:51,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:51,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 16:14:51,494 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:14:51,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:51,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1671521644, now seen corresponding path program 3 times [2023-11-17 16:14:51,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:51,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850043688] [2023-11-17 16:14:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:51,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:14:51,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:51,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850043688] [2023-11-17 16:14:51,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850043688] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:51,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965483654] [2023-11-17 16:14:51,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:14:51,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:51,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:51,849 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 16:14:51,904 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 16:14:52,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 16:14:52,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:52,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 16:14:52,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:52,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 16:14:52,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:14:52,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 16:14:52,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-17 16:14:52,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:14:52,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:15:04,723 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:15:04,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 45 [2023-11-17 16:15:04,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 90 [2023-11-17 16:15:04,732 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:15:04,733 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2023-11-17 16:15:04,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-11-17 16:15:04,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2023-11-17 16:15:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:15:04,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965483654] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:15:04,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:15:04,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 11] total 27 [2023-11-17 16:15:04,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341482251] [2023-11-17 16:15:04,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:15:04,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-17 16:15:04,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:15:04,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-17 16:15:04,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=649, Unknown=16, NotChecked=0, Total=812 [2023-11-17 16:15:04,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 328 [2023-11-17 16:15:04,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 175 transitions, 1052 flow. Second operand has 29 states, 29 states have (on average 114.0) internal successors, (3306), 29 states have internal predecessors, (3306), 0 states have call successors, (0), 0 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 16:15:04,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:15:04,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 328 [2023-11-17 16:15:04,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:15:14,475 INFO L124 PetriNetUnfolderBase]: 42141/58571 cut-off events. [2023-11-17 16:15:14,475 INFO L125 PetriNetUnfolderBase]: For 827428/827428 co-relation queries the response was YES. [2023-11-17 16:15:14,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308430 conditions, 58571 events. 42141/58571 cut-off events. For 827428/827428 co-relation queries the response was YES. Maximal size of possible extension queue 2000. Compared 366077 event pairs, 3981 based on Foata normal form. 43/58202 useless extension candidates. Maximal degree in co-relation 308384. Up to 29288 conditions per place. [2023-11-17 16:15:14,872 INFO L140 encePairwiseOnDemand]: 314/328 looper letters, 664 selfloop transitions, 307 changer transitions 1266/2237 dead transitions. [2023-11-17 16:15:14,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 2237 transitions, 19234 flow [2023-11-17 16:15:14,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-11-17 16:15:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2023-11-17 16:15:14,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 10996 transitions. [2023-11-17 16:15:14,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37667854206631957 [2023-11-17 16:15:14,890 INFO L72 ComplementDD]: Start complementDD. Operand 89 states and 10996 transitions. [2023-11-17 16:15:14,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 10996 transitions. [2023-11-17 16:15:14,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:15:14,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 89 states and 10996 transitions. [2023-11-17 16:15:14,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 90 states, 89 states have (on average 123.5505617977528) internal successors, (10996), 89 states have internal predecessors, (10996), 0 states have call successors, (0), 0 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 16:15:14,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 90 states, 90 states have (on average 328.0) internal successors, (29520), 90 states have internal predecessors, (29520), 0 states have call successors, (0), 0 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 16:15:14,974 INFO L81 ComplementDD]: Finished complementDD. Result has 90 states, 90 states have (on average 328.0) internal successors, (29520), 90 states have internal predecessors, (29520), 0 states have call successors, (0), 0 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 16:15:14,975 INFO L175 Difference]: Start difference. First operand has 105 places, 175 transitions, 1052 flow. Second operand 89 states and 10996 transitions. [2023-11-17 16:15:14,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 2237 transitions, 19234 flow [2023-11-17 16:15:17,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 2237 transitions, 18048 flow, removed 516 selfloop flow, removed 9 redundant places. [2023-11-17 16:15:17,397 INFO L231 Difference]: Finished difference. Result has 251 places, 465 transitions, 4729 flow [2023-11-17 16:15:17,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=89, PETRI_FLOW=4729, PETRI_PLACES=251, PETRI_TRANSITIONS=465} [2023-11-17 16:15:17,398 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 211 predicate places. [2023-11-17 16:15:17,398 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 465 transitions, 4729 flow [2023-11-17 16:15:17,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 114.0) internal successors, (3306), 29 states have internal predecessors, (3306), 0 states have call successors, (0), 0 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 16:15:17,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:15:17,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:15:17,406 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 16:15:17,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-17 16:15:17,604 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:15:17,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:15:17,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1088189178, now seen corresponding path program 4 times [2023-11-17 16:15:17,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:15:17,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050100555] [2023-11-17 16:15:17,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:15:17,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:15:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:15:17,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:15:17,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:15:17,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050100555] [2023-11-17 16:15:17,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050100555] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:15:17,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917256876] [2023-11-17 16:15:17,989 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:15:17,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:15:17,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:15:18,005 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 16:15:18,044 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 16:15:18,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:15:18,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:15:18,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-17 16:15:18,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:15:18,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:15:18,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 242 [2023-11-17 16:15:18,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 16:15:18,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:15:18,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 16:15:18,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-17 16:15:18,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:15:18,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:15:18,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 97 [2023-11-17 16:15:18,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2023-11-17 16:15:18,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-11-17 16:15:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 1 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:15:18,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917256876] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:15:18,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:15:18,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 11] total 27 [2023-11-17 16:15:18,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679645565] [2023-11-17 16:15:18,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:15:18,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-17 16:15:18,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:15:18,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-17 16:15:18,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=639, Unknown=23, NotChecked=0, Total=812 [2023-11-17 16:15:18,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 328 [2023-11-17 16:15:18,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 465 transitions, 4729 flow. Second operand has 29 states, 29 states have (on average 117.0) internal successors, (3393), 29 states have internal predecessors, (3393), 0 states have call successors, (0), 0 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 16:15:18,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:15:18,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 328 [2023-11-17 16:15:18,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:15:35,472 INFO L124 PetriNetUnfolderBase]: 49474/69124 cut-off events. [2023-11-17 16:15:35,472 INFO L125 PetriNetUnfolderBase]: For 5651222/5651222 co-relation queries the response was YES. [2023-11-17 16:15:36,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666226 conditions, 69124 events. 49474/69124 cut-off events. For 5651222/5651222 co-relation queries the response was YES. Maximal size of possible extension queue 2546. Compared 447755 event pairs, 6211 based on Foata normal form. 26/69150 useless extension candidates. Maximal degree in co-relation 666111. Up to 34617 conditions per place. [2023-11-17 16:15:36,946 INFO L140 encePairwiseOnDemand]: 316/328 looper letters, 518 selfloop transitions, 435 changer transitions 908/1861 dead transitions. [2023-11-17 16:15:36,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 1861 transitions, 28495 flow [2023-11-17 16:15:36,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-17 16:15:36,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-11-17 16:15:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 6487 transitions. [2023-11-17 16:15:36,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38779292204686755 [2023-11-17 16:15:36,965 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 6487 transitions. [2023-11-17 16:15:36,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 6487 transitions. [2023-11-17 16:15:36,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:15:36,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 6487 transitions. [2023-11-17 16:15:36,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 127.19607843137256) internal successors, (6487), 51 states have internal predecessors, (6487), 0 states have call successors, (0), 0 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 16:15:36,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 328.0) internal successors, (17056), 52 states have internal predecessors, (17056), 0 states have call successors, (0), 0 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 16:15:36,982 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 328.0) internal successors, (17056), 52 states have internal predecessors, (17056), 0 states have call successors, (0), 0 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 16:15:36,982 INFO L175 Difference]: Start difference. First operand has 251 places, 465 transitions, 4729 flow. Second operand 51 states and 6487 transitions. [2023-11-17 16:15:36,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 1861 transitions, 28495 flow [2023-11-17 16:16:21,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1861 transitions, 22247 flow, removed 2998 selfloop flow, removed 43 redundant places. [2023-11-17 16:16:21,702 INFO L231 Difference]: Finished difference. Result has 245 places, 639 transitions, 8210 flow [2023-11-17 16:16:21,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=4283, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8210, PETRI_PLACES=245, PETRI_TRANSITIONS=639} [2023-11-17 16:16:21,702 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 205 predicate places. [2023-11-17 16:16:21,702 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 639 transitions, 8210 flow [2023-11-17 16:16:21,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 117.0) internal successors, (3393), 29 states have internal predecessors, (3393), 0 states have call successors, (0), 0 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 16:16:21,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:16:21,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:16:21,709 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 16:16:21,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:16:21,909 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:16:21,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:16:21,909 INFO L85 PathProgramCache]: Analyzing trace with hash -564324598, now seen corresponding path program 5 times [2023-11-17 16:16:21,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:16:21,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971989453] [2023-11-17 16:16:21,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:16:21,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:16:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:16:22,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:16:22,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:16:22,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971989453] [2023-11-17 16:16:22,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971989453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:16:22,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:16:22,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 16:16:22,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43172804] [2023-11-17 16:16:22,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:16:22,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:16:22,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:16:22,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:16:22,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:16:22,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 328 [2023-11-17 16:16:22,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 639 transitions, 8210 flow. Second operand has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 16:16:22,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:16:22,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 328 [2023-11-17 16:16:22,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:16:34,170 INFO L124 PetriNetUnfolderBase]: 41027/57984 cut-off events. [2023-11-17 16:16:34,170 INFO L125 PetriNetUnfolderBase]: For 4305882/4305882 co-relation queries the response was YES. [2023-11-17 16:16:35,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538626 conditions, 57984 events. 41027/57984 cut-off events. For 4305882/4305882 co-relation queries the response was YES. Maximal size of possible extension queue 2094. Compared 372202 event pairs, 12454 based on Foata normal form. 38/58022 useless extension candidates. Maximal degree in co-relation 538509. Up to 46501 conditions per place. [2023-11-17 16:16:35,291 INFO L140 encePairwiseOnDemand]: 324/328 looper letters, 627 selfloop transitions, 28 changer transitions 453/1108 dead transitions. [2023-11-17 16:16:35,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 1108 transitions, 16627 flow [2023-11-17 16:16:35,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:16:35,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:16:35,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 825 transitions. [2023-11-17 16:16:35,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030487804878049 [2023-11-17 16:16:35,292 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 825 transitions. [2023-11-17 16:16:35,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 825 transitions. [2023-11-17 16:16:35,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:16:35,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 825 transitions. [2023-11-17 16:16:35,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 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 16:16:35,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 16:16:35,295 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 16:16:35,295 INFO L175 Difference]: Start difference. First operand has 245 places, 639 transitions, 8210 flow. Second operand 5 states and 825 transitions. [2023-11-17 16:16:35,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 1108 transitions, 16627 flow [2023-11-17 16:17:04,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 1108 transitions, 15794 flow, removed 345 selfloop flow, removed 36 redundant places. [2023-11-17 16:17:04,330 INFO L231 Difference]: Finished difference. Result has 184 places, 590 transitions, 7196 flow [2023-11-17 16:17:04,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=7755, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7196, PETRI_PLACES=184, PETRI_TRANSITIONS=590} [2023-11-17 16:17:04,331 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 144 predicate places. [2023-11-17 16:17:04,331 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 590 transitions, 7196 flow [2023-11-17 16:17:04,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 16:17:04,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:17:04,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:17:04,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 16:17:04,332 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:17:04,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:17:04,332 INFO L85 PathProgramCache]: Analyzing trace with hash 590628784, now seen corresponding path program 6 times [2023-11-17 16:17:04,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:17:04,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812618078] [2023-11-17 16:17:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:17:04,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:17:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:17:04,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:17:04,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:17:04,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812618078] [2023-11-17 16:17:04,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812618078] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:17:04,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587552095] [2023-11-17 16:17:04,575 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:17:04,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:17:04,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:17:04,589 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 16:17:04,624 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 16:17:04,751 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:17:04,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:17:04,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 16:17:04,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:17:04,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-17 16:17:04,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:17:04,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:17:05,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:17:05,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587552095] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:17:05,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:17:05,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 7] total 20 [2023-11-17 16:17:05,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328471944] [2023-11-17 16:17:05,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:17:05,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 16:17:05,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:17:05,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 16:17:05,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2023-11-17 16:17:05,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 328 [2023-11-17 16:17:05,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 590 transitions, 7196 flow. Second operand has 21 states, 21 states have (on average 125.85714285714286) internal successors, (2643), 21 states have internal predecessors, (2643), 0 states have call successors, (0), 0 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 16:17:05,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:17:05,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 328 [2023-11-17 16:17:05,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand