/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-prod-cons.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 09:50:15,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 09:50:15,140 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-NoLbe.epf [2023-11-30 09:50:15,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 09:50:15,164 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 09:50:15,164 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 09:50:15,165 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 09:50:15,165 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 09:50:15,165 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 09:50:15,169 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 09:50:15,169 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 09:50:15,169 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 09:50:15,169 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 09:50:15,171 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 09:50:15,171 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 09:50:15,171 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 09:50:15,171 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 09:50:15,171 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 09:50:15,172 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 09:50:15,172 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 09:50:15,172 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 09:50:15,173 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 09:50:15,173 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 09:50:15,173 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 09:50:15,173 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 09:50:15,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 09:50:15,174 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 09:50:15,174 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 09:50:15,174 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 09:50:15,174 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 09:50:15,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 09:50:15,175 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 09:50:15,176 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 09:50:15,176 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-11-30 09:50:15,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 09:50:15,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 09:50:15,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 09:50:15,347 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 09:50:15,350 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 09:50:15,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons.wvr.c [2023-11-30 09:50:16,316 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 09:50:16,487 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 09:50:16,488 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons.wvr.c [2023-11-30 09:50:16,494 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0644f04e5/c7d1e3dff192459daf6717e7f9e60e0e/FLAG2f1cb2330 [2023-11-30 09:50:16,900 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0644f04e5/c7d1e3dff192459daf6717e7f9e60e0e [2023-11-30 09:50:16,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 09:50:16,903 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 09:50:16,905 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 09:50:16,905 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 09:50:16,909 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 09:50:16,909 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 09:50:16" (1/1) ... [2023-11-30 09:50:16,910 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f058e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:50:16, skipping insertion in model container [2023-11-30 09:50:16,910 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 09:50:16" (1/1) ... [2023-11-30 09:50:16,932 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 09:50:17,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 09:50:17,074 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 09:50:17,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 09:50:17,116 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 09:50:17,117 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 09:50:17,121 INFO L206 MainTranslator]: Completed translation [2023-11-30 09:50:17,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:50:17 WrapperNode [2023-11-30 09:50:17,121 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 09:50:17,122 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 09:50:17,122 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 09:50:17,122 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 09:50:17,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:50:17" (1/1) ... [2023-11-30 09:50:17,131 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:50:17" (1/1) ... [2023-11-30 09:50:17,146 INFO L138 Inliner]: procedures = 25, calls = 51, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 185 [2023-11-30 09:50:17,146 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 09:50:17,147 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 09:50:17,147 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 09:50:17,147 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 09:50:17,152 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:50:17" (1/1) ... [2023-11-30 09:50:17,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:50:17" (1/1) ... [2023-11-30 09:50:17,155 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:50:17" (1/1) ... [2023-11-30 09:50:17,155 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:50:17" (1/1) ... [2023-11-30 09:50:17,160 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:50:17" (1/1) ... [2023-11-30 09:50:17,162 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:50:17" (1/1) ... [2023-11-30 09:50:17,163 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:50:17" (1/1) ... [2023-11-30 09:50:17,164 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:50:17" (1/1) ... [2023-11-30 09:50:17,166 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 09:50:17,166 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 09:50:17,167 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 09:50:17,167 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 09:50:17,167 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:50:17" (1/1) ... [2023-11-30 09:50:17,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 09:50:17,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:50:17,194 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) [2023-11-30 09:50:17,203 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 [2023-11-30 09:50:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 09:50:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 09:50:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 09:50:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 09:50:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-30 09:50:17,219 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-30 09:50:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-30 09:50:17,219 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-30 09:50:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-30 09:50:17,219 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-30 09:50:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 09:50:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 09:50:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 09:50:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-30 09:50:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 09:50:17,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 09:50:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 09:50:17,220 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 09:50:17,297 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 09:50:17,299 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 09:50:17,515 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 09:50:17,592 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 09:50:17,593 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-30 09:50:17,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 09:50:17 BoogieIcfgContainer [2023-11-30 09:50:17,594 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 09:50:17,595 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 09:50:17,595 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 09:50:17,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 09:50:17,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 09:50:16" (1/3) ... [2023-11-30 09:50:17,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76071287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 09:50:17, skipping insertion in model container [2023-11-30 09:50:17,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:50:17" (2/3) ... [2023-11-30 09:50:17,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76071287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 09:50:17, skipping insertion in model container [2023-11-30 09:50:17,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 09:50:17" (3/3) ... [2023-11-30 09:50:17,599 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons.wvr.c [2023-11-30 09:50:17,610 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 09:50:17,610 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-30 09:50:17,610 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 09:50:17,657 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-30 09:50:17,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 177 transitions, 375 flow [2023-11-30 09:50:17,734 INFO L124 PetriNetUnfolderBase]: 11/174 cut-off events. [2023-11-30 09:50:17,734 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-30 09:50:17,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 174 events. 11/174 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 167 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2023-11-30 09:50:17,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 177 transitions, 375 flow [2023-11-30 09:50:17,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 147 transitions, 306 flow [2023-11-30 09:50:17,747 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 09:50:17,751 INFO L362 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=true, 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;@1f2f1ac0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 09:50:17,751 INFO L363 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-30 09:50:17,761 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 09:50:17,761 INFO L124 PetriNetUnfolderBase]: 3/70 cut-off events. [2023-11-30 09:50:17,761 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 09:50:17,761 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:50:17,761 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:50:17,762 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:50:17,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:50:17,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1654918116, now seen corresponding path program 1 times [2023-11-30 09:50:17,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:50:17,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376055638] [2023-11-30 09:50:17,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:17,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:50:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:50:18,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:50:18,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376055638] [2023-11-30 09:50:18,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376055638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:50:18,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:50:18,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 09:50:18,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950323250] [2023-11-30 09:50:18,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:50:18,033 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 09:50:18,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:50:18,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 09:50:18,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 09:50:18,058 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 177 [2023-11-30 09:50:18,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 147 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:18,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:50:18,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 177 [2023-11-30 09:50:18,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:50:18,201 INFO L124 PetriNetUnfolderBase]: 95/361 cut-off events. [2023-11-30 09:50:18,201 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-11-30 09:50:18,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 361 events. 95/361 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1348 event pairs, 44 based on Foata normal form. 36/298 useless extension candidates. Maximal degree in co-relation 420. Up to 147 conditions per place. [2023-11-30 09:50:18,208 INFO L140 encePairwiseOnDemand]: 162/177 looper letters, 29 selfloop transitions, 5 changer transitions 3/148 dead transitions. [2023-11-30 09:50:18,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 148 transitions, 376 flow [2023-11-30 09:50:18,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 09:50:18,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 09:50:18,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 745 transitions. [2023-11-30 09:50:18,219 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8418079096045198 [2023-11-30 09:50:18,219 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 745 transitions. [2023-11-30 09:50:18,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 745 transitions. [2023-11-30 09:50:18,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:50:18,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 745 transitions. [2023-11-30 09:50:18,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:18,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:18,230 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:18,232 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 2 predicate places. [2023-11-30 09:50:18,233 INFO L500 AbstractCegarLoop]: Abstraction has has 149 places, 148 transitions, 376 flow [2023-11-30 09:50:18,233 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:18,233 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:50:18,233 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:50:18,233 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 09:50:18,234 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:50:18,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:50:18,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1142330336, now seen corresponding path program 1 times [2023-11-30 09:50:18,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:50:18,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275410497] [2023-11-30 09:50:18,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:18,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:50:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:50:18,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:50:18,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275410497] [2023-11-30 09:50:18,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275410497] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:50:18,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700626855] [2023-11-30 09:50:18,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:18,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:50:18,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:50:18,378 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) [2023-11-30 09:50:18,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-30 09:50:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:18,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 09:50:18,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:50:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:50:18,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 09:50:18,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700626855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:50:18,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 09:50:18,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-30 09:50:18,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848880708] [2023-11-30 09:50:18,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:50:18,557 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 09:50:18,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:50:18,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 09:50:18,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-30 09:50:18,560 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 177 [2023-11-30 09:50:18,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 148 transitions, 376 flow. Second operand has 6 states, 6 states have (on average 142.16666666666666) internal successors, (853), 6 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:18,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:50:18,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 177 [2023-11-30 09:50:18,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:50:18,685 INFO L124 PetriNetUnfolderBase]: 95/360 cut-off events. [2023-11-30 09:50:18,685 INFO L125 PetriNetUnfolderBase]: For 112/184 co-relation queries the response was YES. [2023-11-30 09:50:18,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 360 events. 95/360 cut-off events. For 112/184 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1328 event pairs, 44 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 545. Up to 146 conditions per place. [2023-11-30 09:50:18,689 INFO L140 encePairwiseOnDemand]: 171/177 looper letters, 25 selfloop transitions, 8 changer transitions 3/147 dead transitions. [2023-11-30 09:50:18,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 147 transitions, 438 flow [2023-11-30 09:50:18,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 09:50:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 09:50:18,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1014 transitions. [2023-11-30 09:50:18,692 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8184019370460048 [2023-11-30 09:50:18,692 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1014 transitions. [2023-11-30 09:50:18,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1014 transitions. [2023-11-30 09:50:18,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:50:18,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1014 transitions. [2023-11-30 09:50:18,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 144.85714285714286) internal successors, (1014), 7 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:18,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:18,699 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:18,700 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 7 predicate places. [2023-11-30 09:50:18,700 INFO L500 AbstractCegarLoop]: Abstraction has has 154 places, 147 transitions, 438 flow [2023-11-30 09:50:18,701 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.16666666666666) internal successors, (853), 6 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:18,701 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:50:18,701 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:50:18,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-30 09:50:18,906 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:50:18,906 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:50:18,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:50:18,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1052501653, now seen corresponding path program 1 times [2023-11-30 09:50:18,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:50:18,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076217054] [2023-11-30 09:50:18,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:18,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:50:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:50:19,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:50:19,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076217054] [2023-11-30 09:50:19,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076217054] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:50:19,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281278526] [2023-11-30 09:50:19,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:19,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:50:19,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:50:19,044 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) [2023-11-30 09:50:19,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-30 09:50:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:19,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 09:50:19,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:50:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:50:19,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:50:19,214 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:50:19,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281278526] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:50:19,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:50:19,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-30 09:50:19,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528619568] [2023-11-30 09:50:19,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:50:19,216 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-30 09:50:19,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:50:19,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-30 09:50:19,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-30 09:50:19,219 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 177 [2023-11-30 09:50:19,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 147 transitions, 438 flow. Second operand has 12 states, 12 states have (on average 142.83333333333334) internal successors, (1714), 12 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:19,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:50:19,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 177 [2023-11-30 09:50:19,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:50:19,390 INFO L124 PetriNetUnfolderBase]: 98/395 cut-off events. [2023-11-30 09:50:19,390 INFO L125 PetriNetUnfolderBase]: For 221/365 co-relation queries the response was YES. [2023-11-30 09:50:19,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 995 conditions, 395 events. 98/395 cut-off events. For 221/365 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1559 event pairs, 44 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 670. Up to 172 conditions per place. [2023-11-30 09:50:19,394 INFO L140 encePairwiseOnDemand]: 170/177 looper letters, 41 selfloop transitions, 18 changer transitions 3/173 dead transitions. [2023-11-30 09:50:19,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 173 transitions, 712 flow [2023-11-30 09:50:19,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-30 09:50:19,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-30 09:50:19,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2022 transitions. [2023-11-30 09:50:19,398 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8159806295399515 [2023-11-30 09:50:19,398 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2022 transitions. [2023-11-30 09:50:19,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2022 transitions. [2023-11-30 09:50:19,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:50:19,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2022 transitions. [2023-11-30 09:50:19,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 144.42857142857142) internal successors, (2022), 14 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:19,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 177.0) internal successors, (2655), 15 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:19,406 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 177.0) internal successors, (2655), 15 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:19,407 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 20 predicate places. [2023-11-30 09:50:19,407 INFO L500 AbstractCegarLoop]: Abstraction has has 167 places, 173 transitions, 712 flow [2023-11-30 09:50:19,408 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 142.83333333333334) internal successors, (1714), 12 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:19,408 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:50:19,408 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:50:19,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-30 09:50:19,613 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-30 09:50:19,613 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:50:19,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:50:19,614 INFO L85 PathProgramCache]: Analyzing trace with hash -897068039, now seen corresponding path program 1 times [2023-11-30 09:50:19,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:50:19,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781257755] [2023-11-30 09:50:19,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:19,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:50:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:50:19,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:50:19,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781257755] [2023-11-30 09:50:19,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781257755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:50:19,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:50:19,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 09:50:19,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815514501] [2023-11-30 09:50:19,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:50:19,696 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 09:50:19,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:50:19,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 09:50:19,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-30 09:50:19,698 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 177 [2023-11-30 09:50:19,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 173 transitions, 712 flow. Second operand has 6 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:19,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:50:19,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 177 [2023-11-30 09:50:19,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:50:19,818 INFO L124 PetriNetUnfolderBase]: 98/451 cut-off events. [2023-11-30 09:50:19,819 INFO L125 PetriNetUnfolderBase]: For 430/646 co-relation queries the response was YES. [2023-11-30 09:50:19,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 451 events. 98/451 cut-off events. For 430/646 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1811 event pairs, 44 based on Foata normal form. 6/352 useless extension candidates. Maximal degree in co-relation 795. Up to 177 conditions per place. [2023-11-30 09:50:19,822 INFO L140 encePairwiseOnDemand]: 163/177 looper letters, 42 selfloop transitions, 8 changer transitions 11/179 dead transitions. [2023-11-30 09:50:19,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 179 transitions, 882 flow [2023-11-30 09:50:19,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-30 09:50:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-30 09:50:19,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1277 transitions. [2023-11-30 09:50:19,824 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8016321406151915 [2023-11-30 09:50:19,824 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1277 transitions. [2023-11-30 09:50:19,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1277 transitions. [2023-11-30 09:50:19,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:50:19,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1277 transitions. [2023-11-30 09:50:19,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.88888888888889) internal successors, (1277), 9 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:19,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 177.0) internal successors, (1770), 10 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:19,829 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 177.0) internal successors, (1770), 10 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:19,831 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 28 predicate places. [2023-11-30 09:50:19,831 INFO L500 AbstractCegarLoop]: Abstraction has has 175 places, 179 transitions, 882 flow [2023-11-30 09:50:19,831 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:19,831 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:50:19,832 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:50:19,832 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 09:50:19,832 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:50:19,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:50:19,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1256158013, now seen corresponding path program 1 times [2023-11-30 09:50:19,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:50:19,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600804859] [2023-11-30 09:50:19,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:19,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:50:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:19,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:50:19,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:50:19,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600804859] [2023-11-30 09:50:19,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600804859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:50:19,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172659814] [2023-11-30 09:50:19,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:19,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:50:19,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:50:19,997 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) [2023-11-30 09:50:20,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-30 09:50:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:20,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 09:50:20,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:50:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 09:50:20,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 09:50:20,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172659814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:50:20,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 09:50:20,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-30 09:50:20,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820815897] [2023-11-30 09:50:20,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:50:20,166 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 09:50:20,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:50:20,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 09:50:20,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-30 09:50:20,172 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 177 [2023-11-30 09:50:20,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 179 transitions, 882 flow. Second operand has 4 states, 4 states have (on average 148.25) internal successors, (593), 4 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:50:20,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 177 [2023-11-30 09:50:20,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:50:20,229 INFO L124 PetriNetUnfolderBase]: 52/363 cut-off events. [2023-11-30 09:50:20,230 INFO L125 PetriNetUnfolderBase]: For 505/713 co-relation queries the response was YES. [2023-11-30 09:50:20,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 363 events. 52/363 cut-off events. For 505/713 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1266 event pairs, 22 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 600. Up to 114 conditions per place. [2023-11-30 09:50:20,232 INFO L140 encePairwiseOnDemand]: 172/177 looper letters, 13 selfloop transitions, 3 changer transitions 11/177 dead transitions. [2023-11-30 09:50:20,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 177 transitions, 902 flow [2023-11-30 09:50:20,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 09:50:20,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 09:50:20,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 602 transitions. [2023-11-30 09:50:20,233 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8502824858757062 [2023-11-30 09:50:20,234 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 602 transitions. [2023-11-30 09:50:20,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 602 transitions. [2023-11-30 09:50:20,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:50:20,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 602 transitions. [2023-11-30 09:50:20,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.5) internal successors, (602), 4 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,236 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,238 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 29 predicate places. [2023-11-30 09:50:20,238 INFO L500 AbstractCegarLoop]: Abstraction has has 176 places, 177 transitions, 902 flow [2023-11-30 09:50:20,238 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.25) internal successors, (593), 4 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,238 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:50:20,238 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:50:20,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-30 09:50:20,443 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:50:20,443 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:50:20,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:50:20,444 INFO L85 PathProgramCache]: Analyzing trace with hash 282057695, now seen corresponding path program 1 times [2023-11-30 09:50:20,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:50:20,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268349130] [2023-11-30 09:50:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:20,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:50:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 09:50:20,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:50:20,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268349130] [2023-11-30 09:50:20,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268349130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:50:20,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:50:20,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 09:50:20,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354664236] [2023-11-30 09:50:20,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:50:20,493 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 09:50:20,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:50:20,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 09:50:20,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 09:50:20,494 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 177 [2023-11-30 09:50:20,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 177 transitions, 902 flow. Second operand has 4 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:50:20,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 177 [2023-11-30 09:50:20,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:50:20,582 INFO L124 PetriNetUnfolderBase]: 208/642 cut-off events. [2023-11-30 09:50:20,582 INFO L125 PetriNetUnfolderBase]: For 2387/2387 co-relation queries the response was YES. [2023-11-30 09:50:20,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2401 conditions, 642 events. 208/642 cut-off events. For 2387/2387 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3327 event pairs, 56 based on Foata normal form. 0/522 useless extension candidates. Maximal degree in co-relation 1778. Up to 251 conditions per place. [2023-11-30 09:50:20,587 INFO L140 encePairwiseOnDemand]: 171/177 looper letters, 33 selfloop transitions, 5 changer transitions 13/197 dead transitions. [2023-11-30 09:50:20,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 197 transitions, 1254 flow [2023-11-30 09:50:20,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 09:50:20,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 09:50:20,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 754 transitions. [2023-11-30 09:50:20,589 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8519774011299435 [2023-11-30 09:50:20,589 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 754 transitions. [2023-11-30 09:50:20,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 754 transitions. [2023-11-30 09:50:20,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:50:20,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 754 transitions. [2023-11-30 09:50:20,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,592 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,594 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 32 predicate places. [2023-11-30 09:50:20,594 INFO L500 AbstractCegarLoop]: Abstraction has has 179 places, 197 transitions, 1254 flow [2023-11-30 09:50:20,594 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,594 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:50:20,594 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:50:20,594 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 09:50:20,595 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:50:20,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:50:20,595 INFO L85 PathProgramCache]: Analyzing trace with hash 153854500, now seen corresponding path program 1 times [2023-11-30 09:50:20,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:50:20,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49796282] [2023-11-30 09:50:20,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:20,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:50:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 09:50:20,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:50:20,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49796282] [2023-11-30 09:50:20,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49796282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:50:20,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:50:20,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 09:50:20,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273025149] [2023-11-30 09:50:20,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:50:20,666 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 09:50:20,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:50:20,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 09:50:20,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-30 09:50:20,668 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 177 [2023-11-30 09:50:20,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 197 transitions, 1254 flow. Second operand has 6 states, 6 states have (on average 136.33333333333334) internal successors, (818), 6 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:50:20,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 177 [2023-11-30 09:50:20,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:50:20,800 INFO L124 PetriNetUnfolderBase]: 313/902 cut-off events. [2023-11-30 09:50:20,800 INFO L125 PetriNetUnfolderBase]: For 2555/2678 co-relation queries the response was YES. [2023-11-30 09:50:20,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3494 conditions, 902 events. 313/902 cut-off events. For 2555/2678 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4927 event pairs, 100 based on Foata normal form. 7/766 useless extension candidates. Maximal degree in co-relation 2660. Up to 299 conditions per place. [2023-11-30 09:50:20,806 INFO L140 encePairwiseOnDemand]: 169/177 looper letters, 45 selfloop transitions, 8 changer transitions 15/206 dead transitions. [2023-11-30 09:50:20,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 206 transitions, 1500 flow [2023-11-30 09:50:20,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-30 09:50:20,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-30 09:50:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 845 transitions. [2023-11-30 09:50:20,808 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.795668549905838 [2023-11-30 09:50:20,808 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 845 transitions. [2023-11-30 09:50:20,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 845 transitions. [2023-11-30 09:50:20,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:50:20,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 845 transitions. [2023-11-30 09:50:20,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 140.83333333333334) internal successors, (845), 6 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,812 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,813 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 36 predicate places. [2023-11-30 09:50:20,813 INFO L500 AbstractCegarLoop]: Abstraction has has 183 places, 206 transitions, 1500 flow [2023-11-30 09:50:20,813 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.33333333333334) internal successors, (818), 6 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,814 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:50:20,815 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:50:20,815 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 09:50:20,815 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:50:20,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:50:20,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1859131126, now seen corresponding path program 1 times [2023-11-30 09:50:20,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:50:20,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836916924] [2023-11-30 09:50:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:20,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:50:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:20,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 09:50:20,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:50:20,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836916924] [2023-11-30 09:50:20,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836916924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:50:20,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:50:20,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 09:50:20,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527927529] [2023-11-30 09:50:20,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:50:20,864 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 09:50:20,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:50:20,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 09:50:20,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 09:50:20,865 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 177 [2023-11-30 09:50:20,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 206 transitions, 1500 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:50:20,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 177 [2023-11-30 09:50:20,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:50:20,963 INFO L124 PetriNetUnfolderBase]: 307/878 cut-off events. [2023-11-30 09:50:20,963 INFO L125 PetriNetUnfolderBase]: For 5248/5458 co-relation queries the response was YES. [2023-11-30 09:50:20,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3735 conditions, 878 events. 307/878 cut-off events. For 5248/5458 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4628 event pairs, 33 based on Foata normal form. 18/768 useless extension candidates. Maximal degree in co-relation 2844. Up to 297 conditions per place. [2023-11-30 09:50:20,970 INFO L140 encePairwiseOnDemand]: 174/177 looper letters, 42 selfloop transitions, 2 changer transitions 16/214 dead transitions. [2023-11-30 09:50:20,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 214 transitions, 1755 flow [2023-11-30 09:50:20,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 09:50:20,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 09:50:20,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2023-11-30 09:50:20,971 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8813559322033898 [2023-11-30 09:50:20,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 468 transitions. [2023-11-30 09:50:20,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 468 transitions. [2023-11-30 09:50:20,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:50:20,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 468 transitions. [2023-11-30 09:50:20,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,974 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,975 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 38 predicate places. [2023-11-30 09:50:20,976 INFO L500 AbstractCegarLoop]: Abstraction has has 185 places, 214 transitions, 1755 flow [2023-11-30 09:50:20,976 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:20,976 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:50:20,976 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:50:20,976 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-30 09:50:20,976 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:50:20,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:50:20,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2111760742, now seen corresponding path program 1 times [2023-11-30 09:50:20,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:50:20,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44617640] [2023-11-30 09:50:20,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:20,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:50:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:50:21,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:50:21,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44617640] [2023-11-30 09:50:21,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44617640] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:50:21,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886687709] [2023-11-30 09:50:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:21,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:50:21,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:50:21,603 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) [2023-11-30 09:50:21,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-30 09:50:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:21,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-30 09:50:21,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:50:22,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-30 09:50:22,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-30 09:50:22,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-30 09:50:22,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:50:22,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:50:23,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:50:23,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 51 [2023-11-30 09:50:23,381 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:50:23,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 144 [2023-11-30 09:50:23,394 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:50:23,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 120 [2023-11-30 09:50:23,404 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:50:23,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 81 [2023-11-30 09:50:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:50:23,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886687709] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:50:23,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:50:23,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 17] total 51 [2023-11-30 09:50:23,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236617935] [2023-11-30 09:50:23,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:50:23,974 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-30 09:50:23,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:50:23,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-30 09:50:23,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=2218, Unknown=20, NotChecked=0, Total=2652 [2023-11-30 09:50:23,978 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 177 [2023-11-30 09:50:23,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 214 transitions, 1755 flow. Second operand has 52 states, 52 states have (on average 101.53846153846153) internal successors, (5280), 52 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:23,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:50:23,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 177 [2023-11-30 09:50:23,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:50:28,960 INFO L124 PetriNetUnfolderBase]: 5436/10930 cut-off events. [2023-11-30 09:50:28,961 INFO L125 PetriNetUnfolderBase]: For 81512/82625 co-relation queries the response was YES. [2023-11-30 09:50:29,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56937 conditions, 10930 events. 5436/10930 cut-off events. For 81512/82625 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 91724 event pairs, 487 based on Foata normal form. 27/8940 useless extension candidates. Maximal degree in co-relation 42956. Up to 4058 conditions per place. [2023-11-30 09:50:29,133 INFO L140 encePairwiseOnDemand]: 146/177 looper letters, 533 selfloop transitions, 204 changer transitions 19/831 dead transitions. [2023-11-30 09:50:29,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 831 transitions, 12182 flow [2023-11-30 09:50:29,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-30 09:50:29,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2023-11-30 09:50:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 5693 transitions. [2023-11-30 09:50:29,142 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5956267001464741 [2023-11-30 09:50:29,142 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 5693 transitions. [2023-11-30 09:50:29,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 5693 transitions. [2023-11-30 09:50:29,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:50:29,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 5693 transitions. [2023-11-30 09:50:29,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 105.42592592592592) internal successors, (5693), 54 states have internal predecessors, (5693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:29,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 177.0) internal successors, (9735), 55 states have internal predecessors, (9735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:29,164 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 177.0) internal successors, (9735), 55 states have internal predecessors, (9735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:29,164 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 91 predicate places. [2023-11-30 09:50:29,164 INFO L500 AbstractCegarLoop]: Abstraction has has 238 places, 831 transitions, 12182 flow [2023-11-30 09:50:29,166 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 101.53846153846153) internal successors, (5280), 52 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:29,166 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:50:29,166 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:50:29,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-30 09:50:29,370 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:50:29,371 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:50:29,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:50:29,371 INFO L85 PathProgramCache]: Analyzing trace with hash -437953442, now seen corresponding path program 2 times [2023-11-30 09:50:29,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:50:29,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772087027] [2023-11-30 09:50:29,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:29,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:50:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:50:30,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:50:30,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772087027] [2023-11-30 09:50:30,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772087027] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:50:30,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400419964] [2023-11-30 09:50:30,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 09:50:30,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:50:30,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:50:30,037 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:50:30,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-30 09:50:30,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 09:50:30,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 09:50:30,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-30 09:50:30,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:50:30,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 09:50:30,562 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 20 treesize of output 15 [2023-11-30 09:50:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 09:50:30,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 09:50:30,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400419964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:50:30,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 09:50:30,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 29 [2023-11-30 09:50:30,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035209682] [2023-11-30 09:50:30,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:50:30,613 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-30 09:50:30,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:50:30,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-30 09:50:30,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2023-11-30 09:50:30,615 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 177 [2023-11-30 09:50:30,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 831 transitions, 12182 flow. Second operand has 13 states, 13 states have (on average 121.46153846153847) internal successors, (1579), 13 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:30,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:50:30,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 177 [2023-11-30 09:50:30,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:50:33,036 INFO L124 PetriNetUnfolderBase]: 8987/17698 cut-off events. [2023-11-30 09:50:33,036 INFO L125 PetriNetUnfolderBase]: For 166668/169693 co-relation queries the response was YES. [2023-11-30 09:50:33,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103414 conditions, 17698 events. 8987/17698 cut-off events. For 166668/169693 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 157196 event pairs, 639 based on Foata normal form. 132/14537 useless extension candidates. Maximal degree in co-relation 82278. Up to 6723 conditions per place. [2023-11-30 09:50:33,196 INFO L140 encePairwiseOnDemand]: 161/177 looper letters, 1122 selfloop transitions, 167 changer transitions 19/1430 dead transitions. [2023-11-30 09:50:33,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 1430 transitions, 24814 flow [2023-11-30 09:50:33,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-30 09:50:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-30 09:50:33,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1866 transitions. [2023-11-30 09:50:33,198 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7028248587570621 [2023-11-30 09:50:33,198 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1866 transitions. [2023-11-30 09:50:33,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1866 transitions. [2023-11-30 09:50:33,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:50:33,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1866 transitions. [2023-11-30 09:50:33,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:33,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 177.0) internal successors, (2832), 16 states have internal predecessors, (2832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:33,204 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 177.0) internal successors, (2832), 16 states have internal predecessors, (2832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:33,205 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 105 predicate places. [2023-11-30 09:50:33,205 INFO L500 AbstractCegarLoop]: Abstraction has has 252 places, 1430 transitions, 24814 flow [2023-11-30 09:50:33,205 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 121.46153846153847) internal successors, (1579), 13 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:33,205 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:50:33,205 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:50:33,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-30 09:50:33,410 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-30 09:50:33,411 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:50:33,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:50:33,411 INFO L85 PathProgramCache]: Analyzing trace with hash -437953441, now seen corresponding path program 1 times [2023-11-30 09:50:33,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:50:33,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845690930] [2023-11-30 09:50:33,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:33,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:50:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:34,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:50:34,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:50:34,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845690930] [2023-11-30 09:50:34,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845690930] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:50:34,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368628927] [2023-11-30 09:50:34,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:34,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:50:34,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:50:34,336 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:50:34,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-30 09:50:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:34,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-30 09:50:34,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:50:34,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-30 09:50:35,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 09:50:35,335 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 20 treesize of output 15 [2023-11-30 09:50:35,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 09:50:35,540 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 20 treesize of output 15 [2023-11-30 09:50:35,638 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 [2023-11-30 09:50:35,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:50:35,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:50:36,442 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:50:36,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-11-30 09:50:36,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:50:36,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 80 [2023-11-30 09:50:36,463 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 68 treesize of output 56 [2023-11-30 09:50:36,467 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 30 treesize of output 24 [2023-11-30 09:50:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:50:37,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368628927] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:50:37,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:50:37,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 63 [2023-11-30 09:50:37,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245637385] [2023-11-30 09:50:37,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:50:37,683 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-11-30 09:50:37,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:50:37,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-11-30 09:50:37,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=3700, Unknown=2, NotChecked=0, Total=4032 [2023-11-30 09:50:37,687 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 177 [2023-11-30 09:50:37,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 1430 transitions, 24814 flow. Second operand has 64 states, 64 states have (on average 98.15625) internal successors, (6282), 64 states have internal predecessors, (6282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:37,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:50:37,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 177 [2023-11-30 09:50:37,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:50:46,353 INFO L124 PetriNetUnfolderBase]: 9340/18301 cut-off events. [2023-11-30 09:50:46,353 INFO L125 PetriNetUnfolderBase]: For 217086/221261 co-relation queries the response was YES. [2023-11-30 09:50:46,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117613 conditions, 18301 events. 9340/18301 cut-off events. For 217086/221261 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 161791 event pairs, 594 based on Foata normal form. 276/15333 useless extension candidates. Maximal degree in co-relation 92751. Up to 7023 conditions per place. [2023-11-30 09:50:46,590 INFO L140 encePairwiseOnDemand]: 141/177 looper letters, 1225 selfloop transitions, 417 changer transitions 27/1741 dead transitions. [2023-11-30 09:50:46,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 1741 transitions, 33560 flow [2023-11-30 09:50:46,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-30 09:50:46,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-11-30 09:50:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 4685 transitions. [2023-11-30 09:50:46,597 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5631686500781344 [2023-11-30 09:50:46,597 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 4685 transitions. [2023-11-30 09:50:46,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 4685 transitions. [2023-11-30 09:50:46,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:50:46,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 4685 transitions. [2023-11-30 09:50:46,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 99.68085106382979) internal successors, (4685), 47 states have internal predecessors, (4685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:46,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 177.0) internal successors, (8496), 48 states have internal predecessors, (8496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:46,617 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 177.0) internal successors, (8496), 48 states have internal predecessors, (8496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:46,617 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 151 predicate places. [2023-11-30 09:50:46,617 INFO L500 AbstractCegarLoop]: Abstraction has has 298 places, 1741 transitions, 33560 flow [2023-11-30 09:50:46,619 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 98.15625) internal successors, (6282), 64 states have internal predecessors, (6282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:46,619 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:50:46,619 INFO L232 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:50:46,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-30 09:50:46,824 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:50:46,824 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:50:46,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:50:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash -921603785, now seen corresponding path program 2 times [2023-11-30 09:50:46,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:50:46,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832614606] [2023-11-30 09:50:46,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:46,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:50:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:47,164 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:50:47,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:50:47,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832614606] [2023-11-30 09:50:47,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832614606] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:50:47,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630670050] [2023-11-30 09:50:47,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 09:50:47,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:50:47,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:50:47,166 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:50:47,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-30 09:50:47,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 09:50:47,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 09:50:47,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-30 09:50:47,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:50:47,342 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-30 09:50:47,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:50:47,440 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-30 09:50:47,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630670050] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:50:47,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:50:47,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2023-11-30 09:50:47,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145073300] [2023-11-30 09:50:47,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:50:47,442 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-30 09:50:47,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:50:47,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-30 09:50:47,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-11-30 09:50:47,444 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 177 [2023-11-30 09:50:47,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 1741 transitions, 33560 flow. Second operand has 18 states, 18 states have (on average 130.77777777777777) internal successors, (2354), 18 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:47,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:50:47,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 177 [2023-11-30 09:50:47,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:50:50,886 INFO L124 PetriNetUnfolderBase]: 9312/18244 cut-off events. [2023-11-30 09:50:50,886 INFO L125 PetriNetUnfolderBase]: For 263944/269341 co-relation queries the response was YES. [2023-11-30 09:50:50,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124408 conditions, 18244 events. 9312/18244 cut-off events. For 263944/269341 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 161377 event pairs, 572 based on Foata normal form. 91/15055 useless extension candidates. Maximal degree in co-relation 98274. Up to 7018 conditions per place. [2023-11-30 09:50:51,057 INFO L140 encePairwiseOnDemand]: 163/177 looper letters, 1141 selfloop transitions, 34 changer transitions 27/1753 dead transitions. [2023-11-30 09:50:51,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 1753 transitions, 36102 flow [2023-11-30 09:50:51,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-30 09:50:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-30 09:50:51,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3131 transitions. [2023-11-30 09:50:51,060 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7370527306967984 [2023-11-30 09:50:51,060 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3131 transitions. [2023-11-30 09:50:51,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3131 transitions. [2023-11-30 09:50:51,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:50:51,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3131 transitions. [2023-11-30 09:50:51,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 130.45833333333334) internal successors, (3131), 24 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:51,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 177.0) internal successors, (4425), 25 states have internal predecessors, (4425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:51,068 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 177.0) internal successors, (4425), 25 states have internal predecessors, (4425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:51,068 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 173 predicate places. [2023-11-30 09:50:51,068 INFO L500 AbstractCegarLoop]: Abstraction has has 320 places, 1753 transitions, 36102 flow [2023-11-30 09:50:51,068 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 130.77777777777777) internal successors, (2354), 18 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:51,068 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:50:51,069 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:50:51,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-30 09:50:51,273 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:50:51,273 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:50:51,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:50:51,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2028567721, now seen corresponding path program 1 times [2023-11-30 09:50:51,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:50:51,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151633503] [2023-11-30 09:50:51,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:51,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:50:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:50:51,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:50:51,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151633503] [2023-11-30 09:50:51,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151633503] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:50:51,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804774977] [2023-11-30 09:50:51,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:51,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:50:51,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:50:51,379 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:50:51,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-30 09:50:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:51,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-30 09:50:51,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:50:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 09:50:51,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 09:50:51,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804774977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:50:51,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 09:50:51,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-30 09:50:51,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208495437] [2023-11-30 09:50:51,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:50:51,514 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 09:50:51,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:50:51,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 09:50:51,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-30 09:50:51,516 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 177 [2023-11-30 09:50:51,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 1753 transitions, 36102 flow. Second operand has 4 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:51,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:50:51,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 177 [2023-11-30 09:50:51,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:50:58,303 INFO L124 PetriNetUnfolderBase]: 18987/37085 cut-off events. [2023-11-30 09:50:58,303 INFO L125 PetriNetUnfolderBase]: For 643403/652438 co-relation queries the response was YES. [2023-11-30 09:50:58,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266984 conditions, 37085 events. 18987/37085 cut-off events. For 643403/652438 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 367712 event pairs, 1178 based on Foata normal form. 627/30769 useless extension candidates. Maximal degree in co-relation 196640. Up to 14217 conditions per place. [2023-11-30 09:50:58,905 INFO L140 encePairwiseOnDemand]: 174/177 looper letters, 2037 selfloop transitions, 231 changer transitions 46/2933 dead transitions. [2023-11-30 09:50:58,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 2933 transitions, 73002 flow [2023-11-30 09:50:58,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 09:50:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 09:50:58,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 629 transitions. [2023-11-30 09:50:58,906 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8884180790960452 [2023-11-30 09:50:58,906 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 629 transitions. [2023-11-30 09:50:58,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 629 transitions. [2023-11-30 09:50:58,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:50:58,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 629 transitions. [2023-11-30 09:50:58,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:58,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:58,908 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:58,908 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 176 predicate places. [2023-11-30 09:50:58,908 INFO L500 AbstractCegarLoop]: Abstraction has has 323 places, 2933 transitions, 73002 flow [2023-11-30 09:50:58,909 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:50:58,909 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:50:58,909 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-11-30 09:50:58,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-30 09:50:59,113 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-30 09:50:59,113 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:50:59,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:50:59,114 INFO L85 PathProgramCache]: Analyzing trace with hash 779095836, now seen corresponding path program 1 times [2023-11-30 09:50:59,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:50:59,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345702407] [2023-11-30 09:50:59,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:59,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:50:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:50:59,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:50:59,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345702407] [2023-11-30 09:50:59,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345702407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:50:59,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333658457] [2023-11-30 09:50:59,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:50:59,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:50:59,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:50:59,681 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:50:59,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-30 09:50:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:50:59,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-30 09:50:59,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:50:59,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-30 09:51:00,099 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-30 09:51:00,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-30 09:51:00,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-30 09:51:01,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 09:51:01,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-30 09:51:01,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 09:51:01,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-30 09:51:01,357 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 22 treesize of output 17 [2023-11-30 09:51:01,433 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 17 treesize of output 9 [2023-11-30 09:51:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:51:01,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:51:02,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:51:02,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2023-11-30 09:51:02,410 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:51:02,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 358 treesize of output 342 [2023-11-30 09:51:02,423 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 77 treesize of output 65 [2023-11-30 09:51:02,429 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 65 treesize of output 59 [2023-11-30 09:51:02,474 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 78 treesize of output 54 [2023-11-30 09:51:04,232 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 10 treesize of output 8 [2023-11-30 09:51:04,236 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 10 treesize of output 8 [2023-11-30 09:51:04,240 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 10 treesize of output 8 [2023-11-30 09:51:04,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:51:04,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333658457] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:51:04,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:51:04,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24, 24] total 63 [2023-11-30 09:51:04,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213969086] [2023-11-30 09:51:04,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:51:04,327 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-11-30 09:51:04,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:51:04,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-11-30 09:51:04,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=3740, Unknown=5, NotChecked=0, Total=4032 [2023-11-30 09:51:04,331 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 177 [2023-11-30 09:51:04,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 2933 transitions, 73002 flow. Second operand has 64 states, 64 states have (on average 93.25) internal successors, (5968), 64 states have internal predecessors, (5968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:51:04,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:51:04,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 177 [2023-11-30 09:51:04,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:51:15,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-30 09:51:17,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-30 09:51:19,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-30 09:51:21,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-30 09:51:22,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-30 09:51:24,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-30 09:51:26,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-30 09:51:30,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-30 09:51:49,700 INFO L124 PetriNetUnfolderBase]: 25544/50138 cut-off events. [2023-11-30 09:51:49,700 INFO L125 PetriNetUnfolderBase]: For 997482/1014701 co-relation queries the response was YES. [2023-11-30 09:51:49,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386709 conditions, 50138 events. 25544/50138 cut-off events. For 997482/1014701 co-relation queries the response was YES. Maximal size of possible extension queue 1857. Compared 522193 event pairs, 1901 based on Foata normal form. 1005/42171 useless extension candidates. Maximal degree in co-relation 282192. Up to 19135 conditions per place. [2023-11-30 09:51:50,361 INFO L140 encePairwiseOnDemand]: 140/177 looper letters, 2547 selfloop transitions, 1193 changer transitions 60/3869 dead transitions. [2023-11-30 09:51:50,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 3869 transitions, 103892 flow [2023-11-30 09:51:50,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-30 09:51:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-11-30 09:51:50,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 5362 transitions. [2023-11-30 09:51:50,367 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5409604519774012 [2023-11-30 09:51:50,367 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 5362 transitions. [2023-11-30 09:51:50,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 5362 transitions. [2023-11-30 09:51:50,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:51:50,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 5362 transitions. [2023-11-30 09:51:50,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 95.75) internal successors, (5362), 56 states have internal predecessors, (5362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:51:50,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 177.0) internal successors, (10089), 57 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:51:50,383 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 177.0) internal successors, (10089), 57 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:51:50,384 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 229 predicate places. [2023-11-30 09:51:50,384 INFO L500 AbstractCegarLoop]: Abstraction has has 376 places, 3869 transitions, 103892 flow [2023-11-30 09:51:50,385 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 93.25) internal successors, (5968), 64 states have internal predecessors, (5968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:51:50,385 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:51:50,385 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:51:50,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-30 09:51:50,592 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-30 09:51:50,592 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:51:50,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:51:50,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1841975837, now seen corresponding path program 2 times [2023-11-30 09:51:50,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:51:50,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320908723] [2023-11-30 09:51:50,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:51:50,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:51:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:51:51,629 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:51:51,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:51:51,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320908723] [2023-11-30 09:51:51,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320908723] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:51:51,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094553872] [2023-11-30 09:51:51,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 09:51:51,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:51:51,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:51:51,630 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:51:51,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-30 09:51:51,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 09:51:51,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 09:51:51,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-30 09:51:51,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:51:52,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 09:51:52,330 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 20 treesize of output 15 [2023-11-30 09:51:52,391 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 09:51:52,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 09:51:52,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094553872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:51:52,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 09:51:52,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [20] total 31 [2023-11-30 09:51:52,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913662894] [2023-11-30 09:51:52,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:51:52,392 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-30 09:51:52,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:51:52,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-30 09:51:52,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2023-11-30 09:51:52,393 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 177 [2023-11-30 09:51:52,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 3869 transitions, 103892 flow. Second operand has 13 states, 13 states have (on average 121.46153846153847) internal successors, (1579), 13 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:51:52,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:51:52,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 177 [2023-11-30 09:51:52,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:52:10,490 INFO L124 PetriNetUnfolderBase]: 25035/49151 cut-off events. [2023-11-30 09:52:10,490 INFO L125 PetriNetUnfolderBase]: For 1152584/1171018 co-relation queries the response was YES. [2023-11-30 09:52:10,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405855 conditions, 49151 events. 25035/49151 cut-off events. For 1152584/1171018 co-relation queries the response was YES. Maximal size of possible extension queue 1825. Compared 511032 event pairs, 1870 based on Foata normal form. 666/41124 useless extension candidates. Maximal degree in co-relation 301991. Up to 22823 conditions per place. [2023-11-30 09:52:11,188 INFO L140 encePairwiseOnDemand]: 161/177 looper letters, 3345 selfloop transitions, 265 changer transitions 63/3812 dead transitions. [2023-11-30 09:52:11,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 3812 transitions, 109576 flow [2023-11-30 09:52:11,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-30 09:52:11,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-30 09:52:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1863 transitions. [2023-11-30 09:52:11,190 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7016949152542373 [2023-11-30 09:52:11,190 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1863 transitions. [2023-11-30 09:52:11,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1863 transitions. [2023-11-30 09:52:11,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:52:11,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1863 transitions. [2023-11-30 09:52:11,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 124.2) internal successors, (1863), 15 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:11,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 177.0) internal successors, (2832), 16 states have internal predecessors, (2832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:11,194 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 177.0) internal successors, (2832), 16 states have internal predecessors, (2832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:11,195 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 243 predicate places. [2023-11-30 09:52:11,195 INFO L500 AbstractCegarLoop]: Abstraction has has 390 places, 3812 transitions, 109576 flow [2023-11-30 09:52:11,195 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 121.46153846153847) internal successors, (1579), 13 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:11,195 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:52:11,195 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-11-30 09:52:11,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-30 09:52:11,399 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-30 09:52:11,400 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:52:11,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:52:11,400 INFO L85 PathProgramCache]: Analyzing trace with hash 347835459, now seen corresponding path program 1 times [2023-11-30 09:52:11,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:52:11,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430183776] [2023-11-30 09:52:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:52:11,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:52:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:52:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:52:11,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:52:11,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430183776] [2023-11-30 09:52:11,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430183776] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:52:11,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121874797] [2023-11-30 09:52:11,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:52:11,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:52:11,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:52:11,706 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:52:11,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-30 09:52:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:52:11,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-30 09:52:11,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:52:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:52:11,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:52:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:52:12,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121874797] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:52:12,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:52:12,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-30 09:52:12,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815839331] [2023-11-30 09:52:12,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:52:12,144 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-30 09:52:12,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:52:12,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-30 09:52:12,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-30 09:52:12,145 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 177 [2023-11-30 09:52:12,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 3812 transitions, 109576 flow. Second operand has 19 states, 19 states have (on average 133.26315789473685) internal successors, (2532), 19 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:12,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:52:12,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 177 [2023-11-30 09:52:12,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:52:16,707 INFO L124 PetriNetUnfolderBase]: 5887/12755 cut-off events. [2023-11-30 09:52:16,707 INFO L125 PetriNetUnfolderBase]: For 305305/311063 co-relation queries the response was YES. [2023-11-30 09:52:16,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99725 conditions, 12755 events. 5887/12755 cut-off events. For 305305/311063 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 110895 event pairs, 579 based on Foata normal form. 128/10771 useless extension candidates. Maximal degree in co-relation 74653. Up to 4147 conditions per place. [2023-11-30 09:52:16,832 INFO L140 encePairwiseOnDemand]: 163/177 looper letters, 607 selfloop transitions, 20 changer transitions 265/1090 dead transitions. [2023-11-30 09:52:16,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 1090 transitions, 30002 flow [2023-11-30 09:52:16,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-30 09:52:16,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-30 09:52:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2407 transitions. [2023-11-30 09:52:16,834 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7554927809165097 [2023-11-30 09:52:16,834 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2407 transitions. [2023-11-30 09:52:16,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2407 transitions. [2023-11-30 09:52:16,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:52:16,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2407 transitions. [2023-11-30 09:52:16,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.72222222222223) internal successors, (2407), 18 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:16,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 177.0) internal successors, (3363), 19 states have internal predecessors, (3363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:16,839 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 177.0) internal successors, (3363), 19 states have internal predecessors, (3363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:16,839 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 241 predicate places. [2023-11-30 09:52:16,839 INFO L500 AbstractCegarLoop]: Abstraction has has 388 places, 1090 transitions, 30002 flow [2023-11-30 09:52:16,840 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 133.26315789473685) internal successors, (2532), 19 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:16,840 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:52:16,840 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:52:16,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-30 09:52:17,044 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-30 09:52:17,045 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:52:17,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:52:17,045 INFO L85 PathProgramCache]: Analyzing trace with hash -656679717, now seen corresponding path program 1 times [2023-11-30 09:52:17,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:52:17,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258562071] [2023-11-30 09:52:17,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:52:17,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:52:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:52:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:52:18,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:52:18,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258562071] [2023-11-30 09:52:18,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258562071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:52:18,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676341491] [2023-11-30 09:52:18,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:52:18,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:52:18,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:52:18,157 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:52:18,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-30 09:52:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:52:18,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-30 09:52:18,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:52:18,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-30 09:52:18,425 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-30 09:52:18,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-30 09:52:19,185 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 20 treesize of output 15 [2023-11-30 09:52:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:52:19,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:52:19,393 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:52:19,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 38 [2023-11-30 09:52:19,397 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 11 treesize of output 5 [2023-11-30 09:52:21,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:52:21,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676341491] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:52:21,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:52:21,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 58 [2023-11-30 09:52:21,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347914669] [2023-11-30 09:52:21,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:52:21,053 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-11-30 09:52:21,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:52:21,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-11-30 09:52:21,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=3067, Unknown=0, NotChecked=0, Total=3422 [2023-11-30 09:52:21,056 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 177 [2023-11-30 09:52:21,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 1090 transitions, 30002 flow. Second operand has 59 states, 59 states have (on average 99.67796610169492) internal successors, (5881), 59 states have internal predecessors, (5881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:21,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:52:21,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 177 [2023-11-30 09:52:21,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:52:29,654 INFO L124 PetriNetUnfolderBase]: 12980/26950 cut-off events. [2023-11-30 09:52:29,655 INFO L125 PetriNetUnfolderBase]: For 774187/785052 co-relation queries the response was YES. [2023-11-30 09:52:29,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233442 conditions, 26950 events. 12980/26950 cut-off events. For 774187/785052 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 258132 event pairs, 961 based on Foata normal form. 322/22777 useless extension candidates. Maximal degree in co-relation 164797. Up to 9348 conditions per place. [2023-11-30 09:52:29,944 INFO L140 encePairwiseOnDemand]: 147/177 looper letters, 1380 selfloop transitions, 486 changer transitions 319/2264 dead transitions. [2023-11-30 09:52:29,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 2264 transitions, 69862 flow [2023-11-30 09:52:29,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-30 09:52:29,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-11-30 09:52:29,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 6117 transitions. [2023-11-30 09:52:29,948 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5759887005649718 [2023-11-30 09:52:29,948 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 6117 transitions. [2023-11-30 09:52:29,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 6117 transitions. [2023-11-30 09:52:29,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:52:29,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 6117 transitions. [2023-11-30 09:52:29,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 101.95) internal successors, (6117), 60 states have internal predecessors, (6117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:29,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 177.0) internal successors, (10797), 61 states have internal predecessors, (10797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:29,961 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 177.0) internal successors, (10797), 61 states have internal predecessors, (10797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:29,961 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 300 predicate places. [2023-11-30 09:52:29,961 INFO L500 AbstractCegarLoop]: Abstraction has has 447 places, 2264 transitions, 69862 flow [2023-11-30 09:52:29,962 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 99.67796610169492) internal successors, (5881), 59 states have internal predecessors, (5881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:29,962 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:52:29,962 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:52:29,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-30 09:52:30,166 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-30 09:52:30,169 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:52:30,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:52:30,169 INFO L85 PathProgramCache]: Analyzing trace with hash 293151515, now seen corresponding path program 2 times [2023-11-30 09:52:30,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:52:30,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80467610] [2023-11-30 09:52:30,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:52:30,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:52:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:52:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:52:31,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:52:31,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80467610] [2023-11-30 09:52:31,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80467610] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:52:31,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987463152] [2023-11-30 09:52:31,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 09:52:31,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:52:31,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:52:31,074 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:52:31,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-30 09:52:31,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 09:52:31,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 09:52:31,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-30 09:52:31,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:52:31,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 09:52:31,846 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 20 treesize of output 15 [2023-11-30 09:52:31,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 09:52:31,907 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 20 treesize of output 15 [2023-11-30 09:52:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 09:52:31,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 09:52:31,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987463152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:52:31,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 09:52:31,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [22] total 35 [2023-11-30 09:52:31,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105098337] [2023-11-30 09:52:31,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:52:31,954 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-30 09:52:31,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:52:31,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-30 09:52:31,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1101, Unknown=0, NotChecked=0, Total=1260 [2023-11-30 09:52:31,955 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 177 [2023-11-30 09:52:31,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 2264 transitions, 69862 flow. Second operand has 15 states, 15 states have (on average 119.2) internal successors, (1788), 15 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:31,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:52:31,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 177 [2023-11-30 09:52:31,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:52:39,049 INFO L124 PetriNetUnfolderBase]: 12674/26415 cut-off events. [2023-11-30 09:52:39,050 INFO L125 PetriNetUnfolderBase]: For 855486/866356 co-relation queries the response was YES. [2023-11-30 09:52:39,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240888 conditions, 26415 events. 12674/26415 cut-off events. For 855486/866356 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 252370 event pairs, 932 based on Foata normal form. 221/22391 useless extension candidates. Maximal degree in co-relation 169675. Up to 9163 conditions per place. [2023-11-30 09:52:39,380 INFO L140 encePairwiseOnDemand]: 161/177 looper letters, 1569 selfloop transitions, 195 changer transitions 324/2225 dead transitions. [2023-11-30 09:52:39,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 2225 transitions, 72684 flow [2023-11-30 09:52:39,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-30 09:52:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-30 09:52:39,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1940 transitions. [2023-11-30 09:52:39,382 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6850282485875706 [2023-11-30 09:52:39,382 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1940 transitions. [2023-11-30 09:52:39,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1940 transitions. [2023-11-30 09:52:39,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:52:39,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1940 transitions. [2023-11-30 09:52:39,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 121.25) internal successors, (1940), 16 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:39,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 177.0) internal successors, (3009), 17 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:39,386 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 177.0) internal successors, (3009), 17 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:39,386 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 313 predicate places. [2023-11-30 09:52:39,386 INFO L500 AbstractCegarLoop]: Abstraction has has 460 places, 2225 transitions, 72684 flow [2023-11-30 09:52:39,386 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 119.2) internal successors, (1788), 15 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:39,386 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:52:39,386 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:52:39,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-30 09:52:39,591 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-30 09:52:39,591 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:52:39,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:52:39,592 INFO L85 PathProgramCache]: Analyzing trace with hash 293151514, now seen corresponding path program 2 times [2023-11-30 09:52:39,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:52:39,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72624401] [2023-11-30 09:52:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:52:39,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:52:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:52:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:52:41,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:52:41,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72624401] [2023-11-30 09:52:41,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72624401] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:52:41,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211558019] [2023-11-30 09:52:41,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 09:52:41,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:52:41,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:52:41,296 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:52:41,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-30 09:52:41,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 09:52:41,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 09:52:41,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-30 09:52:41,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:52:42,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 09:52:42,025 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 20 treesize of output 15 [2023-11-30 09:52:42,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 09:52:42,090 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 20 treesize of output 15 [2023-11-30 09:52:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 09:52:42,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 09:52:42,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211558019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:52:42,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 09:52:42,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [27] total 40 [2023-11-30 09:52:42,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18579910] [2023-11-30 09:52:42,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:52:42,149 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-30 09:52:42,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:52:42,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-30 09:52:42,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1461, Unknown=0, NotChecked=0, Total=1640 [2023-11-30 09:52:42,151 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 177 [2023-11-30 09:52:42,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 2225 transitions, 72684 flow. Second operand has 15 states, 15 states have (on average 119.2) internal successors, (1788), 15 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:42,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:52:42,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 177 [2023-11-30 09:52:42,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:52:49,827 INFO L124 PetriNetUnfolderBase]: 13276/27766 cut-off events. [2023-11-30 09:52:49,828 INFO L125 PetriNetUnfolderBase]: For 1037937/1053465 co-relation queries the response was YES. [2023-11-30 09:52:49,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266980 conditions, 27766 events. 13276/27766 cut-off events. For 1037937/1053465 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 268077 event pairs, 970 based on Foata normal form. 291/23811 useless extension candidates. Maximal degree in co-relation 193883. Up to 10376 conditions per place. [2023-11-30 09:52:50,290 INFO L140 encePairwiseOnDemand]: 161/177 looper letters, 1592 selfloop transitions, 284 changer transitions 322/2335 dead transitions. [2023-11-30 09:52:50,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 2335 transitions, 81110 flow [2023-11-30 09:52:50,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-30 09:52:50,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-30 09:52:50,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1950 transitions. [2023-11-30 09:52:50,292 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6885593220338984 [2023-11-30 09:52:50,292 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1950 transitions. [2023-11-30 09:52:50,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1950 transitions. [2023-11-30 09:52:50,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:52:50,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1950 transitions. [2023-11-30 09:52:50,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 121.875) internal successors, (1950), 16 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:50,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 177.0) internal successors, (3009), 17 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:50,296 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 177.0) internal successors, (3009), 17 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:50,296 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 325 predicate places. [2023-11-30 09:52:50,296 INFO L500 AbstractCegarLoop]: Abstraction has has 472 places, 2335 transitions, 81110 flow [2023-11-30 09:52:50,296 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 119.2) internal successors, (1788), 15 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:50,296 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:52:50,296 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:52:50,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-30 09:52:50,501 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:52:50,501 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:52:50,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:52:50,501 INFO L85 PathProgramCache]: Analyzing trace with hash -773507018, now seen corresponding path program 1 times [2023-11-30 09:52:50,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:52:50,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133510325] [2023-11-30 09:52:50,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:52:50,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:52:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:52:51,038 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:52:51,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:52:51,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133510325] [2023-11-30 09:52:51,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133510325] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:52:51,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097714074] [2023-11-30 09:52:51,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:52:51,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:52:51,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:52:51,040 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:52:51,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-30 09:52:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:52:51,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-30 09:52:51,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:52:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:52:51,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:52:51,757 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:52:51,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2023-11-30 09:52:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:52:52,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097714074] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:52:52,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:52:52,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 14] total 47 [2023-11-30 09:52:52,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669858493] [2023-11-30 09:52:52,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:52:52,570 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-30 09:52:52,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:52:52,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-30 09:52:52,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1861, Unknown=0, NotChecked=0, Total=2256 [2023-11-30 09:52:52,573 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 177 [2023-11-30 09:52:52,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 2335 transitions, 81110 flow. Second operand has 48 states, 48 states have (on average 109.95833333333333) internal successors, (5278), 48 states have internal predecessors, (5278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:52:52,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:52:52,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 177 [2023-11-30 09:52:52,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:53:11,428 INFO L124 PetriNetUnfolderBase]: 28425/57017 cut-off events. [2023-11-30 09:53:11,429 INFO L125 PetriNetUnfolderBase]: For 2485433/2525879 co-relation queries the response was YES. [2023-11-30 09:53:11,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600089 conditions, 57017 events. 28425/57017 cut-off events. For 2485433/2525879 co-relation queries the response was YES. Maximal size of possible extension queue 1867. Compared 595363 event pairs, 2098 based on Foata normal form. 1772/48784 useless extension candidates. Maximal degree in co-relation 362801. Up to 25727 conditions per place. [2023-11-30 09:53:12,532 INFO L140 encePairwiseOnDemand]: 150/177 looper letters, 3693 selfloop transitions, 832 changer transitions 366/4976 dead transitions. [2023-11-30 09:53:12,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 4976 transitions, 182948 flow [2023-11-30 09:53:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-30 09:53:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-11-30 09:53:12,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 6777 transitions. [2023-11-30 09:53:12,537 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.638135593220339 [2023-11-30 09:53:12,537 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 6777 transitions. [2023-11-30 09:53:12,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 6777 transitions. [2023-11-30 09:53:12,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:53:12,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 6777 transitions. [2023-11-30 09:53:12,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 112.95) internal successors, (6777), 60 states have internal predecessors, (6777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:53:12,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 177.0) internal successors, (10797), 61 states have internal predecessors, (10797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:53:12,549 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 177.0) internal successors, (10797), 61 states have internal predecessors, (10797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:53:12,549 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 384 predicate places. [2023-11-30 09:53:12,549 INFO L500 AbstractCegarLoop]: Abstraction has has 531 places, 4976 transitions, 182948 flow [2023-11-30 09:53:12,550 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 109.95833333333333) internal successors, (5278), 48 states have internal predecessors, (5278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:53:12,550 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:53:12,550 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:53:12,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-30 09:53:12,754 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:53:12,755 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:53:12,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:53:12,755 INFO L85 PathProgramCache]: Analyzing trace with hash 736075758, now seen corresponding path program 2 times [2023-11-30 09:53:12,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:53:12,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106257863] [2023-11-30 09:53:12,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:53:12,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:53:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:53:13,277 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:53:13,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:53:13,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106257863] [2023-11-30 09:53:13,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106257863] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:53:13,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117665070] [2023-11-30 09:53:13,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 09:53:13,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:53:13,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:53:13,280 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:53:13,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-30 09:53:13,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-30 09:53:13,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 09:53:13,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-30 09:53:13,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:53:13,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-30 09:53:14,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-30 09:53:14,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-30 09:53:14,534 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:53:14,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:53:16,012 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:53:16,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 52 [2023-11-30 09:53:16,023 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-30 09:53:16,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 156 treesize of output 141 [2023-11-30 09:53:16,039 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-30 09:53:16,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 102 [2023-11-30 09:53:16,049 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-30 09:53:16,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 67 [2023-11-30 09:53:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:53:16,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117665070] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:53:16,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:53:16,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 21] total 63 [2023-11-30 09:53:16,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937710750] [2023-11-30 09:53:16,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:53:16,777 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-11-30 09:53:16,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:53:16,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-11-30 09:53:16,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=3455, Unknown=21, NotChecked=0, Total=4032 [2023-11-30 09:53:16,781 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 177 [2023-11-30 09:53:16,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 4976 transitions, 182948 flow. Second operand has 64 states, 64 states have (on average 101.359375) internal successors, (6487), 64 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) [2023-11-30 09:53:16,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:53:16,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 177 [2023-11-30 09:53:16,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:54:11,560 INFO L124 PetriNetUnfolderBase]: 41469/84350 cut-off events. [2023-11-30 09:54:11,561 INFO L125 PetriNetUnfolderBase]: For 3883724/3938894 co-relation queries the response was YES. [2023-11-30 09:54:12,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 924801 conditions, 84350 events. 41469/84350 cut-off events. For 3883724/3938894 co-relation queries the response was YES. Maximal size of possible extension queue 2671. Compared 939362 event pairs, 3021 based on Foata normal form. 1819/71746 useless extension candidates. Maximal degree in co-relation 580628. Up to 38911 conditions per place. [2023-11-30 09:54:13,291 INFO L140 encePairwiseOnDemand]: 145/177 looper letters, 5255 selfloop transitions, 1460 changer transitions 438/7234 dead transitions. [2023-11-30 09:54:13,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 7234 transitions, 282983 flow [2023-11-30 09:54:13,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-11-30 09:54:13,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-11-30 09:54:13,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 7349 transitions. [2023-11-30 09:54:13,296 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5931396287328491 [2023-11-30 09:54:13,296 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 7349 transitions. [2023-11-30 09:54:13,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 7349 transitions. [2023-11-30 09:54:13,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:54:13,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 7349 transitions. [2023-11-30 09:54:13,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 104.98571428571428) internal successors, (7349), 70 states have internal predecessors, (7349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:54:13,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 177.0) internal successors, (12567), 71 states have internal predecessors, (12567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:54:13,309 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 177.0) internal successors, (12567), 71 states have internal predecessors, (12567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:54:13,309 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 453 predicate places. [2023-11-30 09:54:13,309 INFO L500 AbstractCegarLoop]: Abstraction has has 600 places, 7234 transitions, 282983 flow [2023-11-30 09:54:13,310 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 101.359375) internal successors, (6487), 64 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) [2023-11-30 09:54:13,310 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:54:13,310 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:54:13,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-30 09:54:13,514 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:54:13,514 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:54:13,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:54:13,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1242151609, now seen corresponding path program 2 times [2023-11-30 09:54:13,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:54:13,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101311310] [2023-11-30 09:54:13,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:54:13,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:54:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:54:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:54:14,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:54:14,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101311310] [2023-11-30 09:54:14,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101311310] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:54:14,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201003285] [2023-11-30 09:54:14,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 09:54:14,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:54:14,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:54:14,146 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:54:14,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-30 09:54:14,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-30 09:54:14,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 09:54:14,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-30 09:54:14,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:54:14,902 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:54:14,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:54:15,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:54:15,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 51 [2023-11-30 09:54:16,123 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:54:16,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201003285] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:54:16,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:54:16,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 16] total 51 [2023-11-30 09:54:16,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208142834] [2023-11-30 09:54:16,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:54:16,124 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-30 09:54:16,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:54:16,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-30 09:54:16,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=2313, Unknown=0, NotChecked=0, Total=2652 [2023-11-30 09:54:16,127 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 177 [2023-11-30 09:54:16,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 7234 transitions, 282983 flow. Second operand has 52 states, 52 states have (on average 109.92307692307692) internal successors, (5716), 52 states have internal predecessors, (5716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:54:16,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:54:16,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 177 [2023-11-30 09:54:16,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:55:48,549 INFO L124 PetriNetUnfolderBase]: 56707/112696 cut-off events. [2023-11-30 09:55:48,550 INFO L125 PetriNetUnfolderBase]: For 5987245/6061629 co-relation queries the response was YES. [2023-11-30 09:55:49,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1320805 conditions, 112696 events. 56707/112696 cut-off events. For 5987245/6061629 co-relation queries the response was YES. Maximal size of possible extension queue 3622. Compared 1290094 event pairs, 3825 based on Foata normal form. 2343/95347 useless extension candidates. Maximal degree in co-relation 910220. Up to 54353 conditions per place. [2023-11-30 09:55:51,034 INFO L140 encePairwiseOnDemand]: 149/177 looper letters, 7273 selfloop transitions, 2339 changer transitions 485/10182 dead transitions. [2023-11-30 09:55:51,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 10182 transitions, 417196 flow [2023-11-30 09:55:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-11-30 09:55:51,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-11-30 09:55:51,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 8157 transitions. [2023-11-30 09:55:51,040 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6400659133709982 [2023-11-30 09:55:51,040 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 8157 transitions. [2023-11-30 09:55:51,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 8157 transitions. [2023-11-30 09:55:51,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:55:51,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 8157 transitions. [2023-11-30 09:55:51,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 113.29166666666667) internal successors, (8157), 72 states have internal predecessors, (8157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:55:51,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 177.0) internal successors, (12921), 73 states have internal predecessors, (12921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:55:51,053 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 177.0) internal successors, (12921), 73 states have internal predecessors, (12921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:55:51,053 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 524 predicate places. [2023-11-30 09:55:51,053 INFO L500 AbstractCegarLoop]: Abstraction has has 671 places, 10182 transitions, 417196 flow [2023-11-30 09:55:51,054 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 109.92307692307692) internal successors, (5716), 52 states have internal predecessors, (5716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:55:51,054 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:55:51,054 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:55:51,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-30 09:55:51,258 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:55:51,258 INFO L425 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:55:51,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:55:51,259 INFO L85 PathProgramCache]: Analyzing trace with hash -247973794, now seen corresponding path program 3 times [2023-11-30 09:55:51,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:55:51,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276822222] [2023-11-30 09:55:51,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:55:51,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:55:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:55:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:55:51,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:55:51,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276822222] [2023-11-30 09:55:51,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276822222] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:55:51,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377388834] [2023-11-30 09:55:51,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-30 09:55:51,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:55:51,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:55:51,721 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:55:51,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-30 09:55:51,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-30 09:55:51,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 09:55:51,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-30 09:55:51,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:55:52,081 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 09:55:52,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:55:52,173 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-30 09:55:52,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2023-11-30 09:55:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 09:55:52,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377388834] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:55:52,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:55:52,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 7, 7] total 30 [2023-11-30 09:55:52,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014404248] [2023-11-30 09:55:52,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:55:52,250 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-30 09:55:52,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:55:52,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-30 09:55:52,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2023-11-30 09:55:52,252 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 177 [2023-11-30 09:55:52,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 10182 transitions, 417196 flow. Second operand has 31 states, 31 states have (on average 110.09677419354838) internal successors, (3413), 31 states have internal predecessors, (3413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:55:52,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:55:52,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 177 [2023-11-30 09:55:52,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:59:18,864 INFO L124 PetriNetUnfolderBase]: 84153/167377 cut-off events. [2023-11-30 09:59:18,864 INFO L125 PetriNetUnfolderBase]: For 9744152/9850346 co-relation queries the response was YES. [2023-11-30 09:59:20,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050999 conditions, 167377 events. 84153/167377 cut-off events. For 9744152/9850346 co-relation queries the response was YES. Maximal size of possible extension queue 4636. Compared 1976060 event pairs, 5507 based on Foata normal form. 3128/141057 useless extension candidates. Maximal degree in co-relation 1236732. Up to 81859 conditions per place. [2023-11-30 09:59:22,732 INFO L140 encePairwiseOnDemand]: 152/177 looper letters, 12145 selfloop transitions, 2753 changer transitions 534/15517 dead transitions. [2023-11-30 09:59:22,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 738 places, 15517 transitions, 661923 flow [2023-11-30 09:59:22,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-30 09:59:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2023-11-30 09:59:22,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 8120 transitions. [2023-11-30 09:59:22,800 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6461367072491446 [2023-11-30 09:59:22,800 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 8120 transitions. [2023-11-30 09:59:22,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 8120 transitions. [2023-11-30 09:59:22,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:59:22,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 8120 transitions. [2023-11-30 09:59:22,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 114.36619718309859) internal successors, (8120), 71 states have internal predecessors, (8120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:59:22,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 177.0) internal successors, (12744), 72 states have internal predecessors, (12744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:59:22,814 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 177.0) internal successors, (12744), 72 states have internal predecessors, (12744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:59:22,814 INFO L307 CegarLoopForPetriNet]: 147 programPoint places, 591 predicate places. [2023-11-30 09:59:22,814 INFO L500 AbstractCegarLoop]: Abstraction has has 738 places, 15517 transitions, 661923 flow [2023-11-30 09:59:22,815 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 110.09677419354838) internal successors, (3413), 31 states have internal predecessors, (3413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:59:22,815 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:59:22,815 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:59:22,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-30 09:59:23,020 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:59:23,020 INFO L425 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 09:59:23,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:59:23,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1660346857, now seen corresponding path program 3 times [2023-11-30 09:59:23,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:59:23,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801750152] [2023-11-30 09:59:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:59:23,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:59:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:59:23,839 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:59:23,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:59:23,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801750152] [2023-11-30 09:59:23,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801750152] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:59:23,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987173089] [2023-11-30 09:59:23,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-30 09:59:23,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:59:23,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:59:23,840 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:59:23,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-30 09:59:24,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-30 09:59:24,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 09:59:24,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-30 09:59:24,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:59:24,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 09:59:24,464 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 20 treesize of output 15 [2023-11-30 09:59:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 09:59:24,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:59:24,814 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_662 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_662) c_~queue~0.base))) (or (< (let ((.cse1 (* c_~front~0 4))) (+ c_~d~0 (select .cse0 (+ c_~queue~0.offset .cse1 4)) (select .cse0 (+ c_~queue~0.offset .cse1)))) 2147483648) (not (= (select .cse0 (+ c_~queue~0.offset (* c_~back~0 4))) 1))))) is different from false [2023-11-30 09:59:24,861 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:59:24,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 100 [2023-11-30 09:59:24,879 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:59:24,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 47 [2023-11-30 09:59:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 09:59:25,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987173089] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:59:25,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:59:25,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15, 15] total 51 [2023-11-30 09:59:25,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335924068] [2023-11-30 09:59:25,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:59:25,472 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-30 09:59:25,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:59:25,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-30 09:59:25,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=2312, Unknown=1, NotChecked=98, Total=2652 [2023-11-30 09:59:25,475 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 177 [2023-11-30 09:59:25,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 738 places, 15517 transitions, 661923 flow. Second operand has 52 states, 52 states have (on average 103.84615384615384) internal successors, (5400), 52 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:59:25,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:59:25,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 177 [2023-11-30 09:59:25,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-30 10:03:03,990 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-30 10:03:03,990 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-30 10:03:04,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-11-30 10:03:04,713 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 21 remaining) [2023-11-30 10:03:04,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-30 10:03:04,914 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:03:04,914 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (52states, 101/177 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1256022 conditions, 98688 events (49225/98687 cut-off events. For 6690873/6770579 co-relation queries the response was YES. Maximal size of possible extension queue 4929. Compared 1208682 event pairs, 4018 based on Foata normal form. 2223/89589 useless extension candidates. Maximal degree in co-relation 910595. Up to 45050 conditions per place.). [2023-11-30 10:03:04,916 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-30 10:03:04,916 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-30 10:03:04,916 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-30 10:03:04,916 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-30 10:03:04,916 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-30 10:03:04,916 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-30 10:03:04,916 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-30 10:03:04,916 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-30 10:03:04,916 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-30 10:03:04,916 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-30 10:03:04,916 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 21 remaining) [2023-11-30 10:03:04,916 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 21 remaining) [2023-11-30 10:03:04,916 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 21 remaining) [2023-11-30 10:03:04,916 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-11-30 10:03:04,917 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-30 10:03:04,917 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-30 10:03:04,917 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-30 10:03:04,917 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-30 10:03:04,917 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-30 10:03:04,917 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-30 10:03:04,917 INFO L457 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:03:04,921 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 10:03:04,921 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 10:03:04,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 10:03:04 BasicIcfg [2023-11-30 10:03:04,923 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 10:03:04,924 INFO L158 Benchmark]: Toolchain (without parser) took 768020.41ms. Allocated memory was 543.2MB in the beginning and 10.8GB in the end (delta: 10.3GB). Free memory was 500.7MB in the beginning and 5.7GB in the end (delta: -5.2GB). Peak memory consumption was 5.6GB. Max. memory is 16.0GB. [2023-11-30 10:03:04,924 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 358.6MB. Free memory is still 307.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 10:03:04,924 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.28ms. Allocated memory is still 543.2MB. Free memory was 500.3MB in the beginning and 488.5MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-30 10:03:04,924 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.56ms. Allocated memory is still 543.2MB. Free memory was 488.5MB in the beginning and 486.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 10:03:04,924 INFO L158 Benchmark]: Boogie Preprocessor took 19.07ms. Allocated memory is still 543.2MB. Free memory was 486.5MB in the beginning and 484.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 10:03:04,924 INFO L158 Benchmark]: RCFGBuilder took 427.27ms. Allocated memory is still 543.2MB. Free memory was 484.7MB in the beginning and 457.1MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-11-30 10:03:04,925 INFO L158 Benchmark]: TraceAbstraction took 767328.18ms. Allocated memory was 543.2MB in the beginning and 10.8GB in the end (delta: 10.3GB). Free memory was 456.7MB in the beginning and 5.7GB in the end (delta: -5.2GB). Peak memory consumption was 5.5GB. Max. memory is 16.0GB. [2023-11-30 10:03:04,925 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 358.6MB. Free memory is still 307.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 216.28ms. Allocated memory is still 543.2MB. Free memory was 500.3MB in the beginning and 488.5MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 24.56ms. Allocated memory is still 543.2MB. Free memory was 488.5MB in the beginning and 486.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.07ms. Allocated memory is still 543.2MB. Free memory was 486.5MB in the beginning and 484.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 427.27ms. Allocated memory is still 543.2MB. Free memory was 484.7MB in the beginning and 457.1MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * TraceAbstraction took 767328.18ms. Allocated memory was 543.2MB in the beginning and 10.8GB in the end (delta: 10.3GB). Free memory was 456.7MB in the beginning and 5.7GB in the end (delta: -5.2GB). Peak memory consumption was 5.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (52states, 101/177 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1256022 conditions, 98688 events (49225/98687 cut-off events. For 6690873/6770579 co-relation queries the response was YES. Maximal size of possible extension queue 4929. Compared 1208682 event pairs, 4018 based on Foata normal form. 2223/89589 useless extension candidates. Maximal degree in co-relation 910595. Up to 45050 conditions per place.). - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (52states, 101/177 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1256022 conditions, 98688 events (49225/98687 cut-off events. For 6690873/6770579 co-relation queries the response was YES. Maximal size of possible extension queue 4929. Compared 1208682 event pairs, 4018 based on Foata normal form. 2223/89589 useless extension candidates. Maximal degree in co-relation 910595. Up to 45050 conditions per place.). - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (52states, 101/177 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1256022 conditions, 98688 events (49225/98687 cut-off events. For 6690873/6770579 co-relation queries the response was YES. Maximal size of possible extension queue 4929. Compared 1208682 event pairs, 4018 based on Foata normal form. 2223/89589 useless extension candidates. Maximal degree in co-relation 910595. Up to 45050 conditions per place.). - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (52states, 101/177 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1256022 conditions, 98688 events (49225/98687 cut-off events. For 6690873/6770579 co-relation queries the response was YES. Maximal size of possible extension queue 4929. Compared 1208682 event pairs, 4018 based on Foata normal form. 2223/89589 useless extension candidates. Maximal degree in co-relation 910595. Up to 45050 conditions per place.). - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (52states, 101/177 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1256022 conditions, 98688 events (49225/98687 cut-off events. For 6690873/6770579 co-relation queries the response was YES. Maximal size of possible extension queue 4929. Compared 1208682 event pairs, 4018 based on Foata normal form. 2223/89589 useless extension candidates. Maximal degree in co-relation 910595. Up to 45050 conditions per place.). - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (52states, 101/177 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1256022 conditions, 98688 events (49225/98687 cut-off events. For 6690873/6770579 co-relation queries the response was YES. Maximal size of possible extension queue 4929. Compared 1208682 event pairs, 4018 based on Foata normal form. 2223/89589 useless extension candidates. Maximal degree in co-relation 910595. Up to 45050 conditions per place.). - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (52states, 101/177 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1256022 conditions, 98688 events (49225/98687 cut-off events. For 6690873/6770579 co-relation queries the response was YES. Maximal size of possible extension queue 4929. Compared 1208682 event pairs, 4018 based on Foata normal form. 2223/89589 useless extension candidates. Maximal degree in co-relation 910595. Up to 45050 conditions per place.). - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (52states, 101/177 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1256022 conditions, 98688 events (49225/98687 cut-off events. For 6690873/6770579 co-relation queries the response was YES. Maximal size of possible extension queue 4929. Compared 1208682 event pairs, 4018 based on Foata normal form. 2223/89589 useless extension candidates. Maximal degree in co-relation 910595. Up to 45050 conditions per place.). - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (52states, 101/177 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1256022 conditions, 98688 events (49225/98687 cut-off events. For 6690873/6770579 co-relation queries the response was YES. Maximal size of possible extension queue 4929. Compared 1208682 event pairs, 4018 based on Foata normal form. 2223/89589 useless extension candidates. Maximal degree in co-relation 910595. Up to 45050 conditions per place.). - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (52states, 101/177 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1256022 conditions, 98688 events (49225/98687 cut-off events. For 6690873/6770579 co-relation queries the response was YES. Maximal size of possible extension queue 4929. Compared 1208682 event pairs, 4018 based on Foata normal form. 2223/89589 useless extension candidates. Maximal degree in co-relation 910595. Up to 45050 conditions per place.). - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (52states, 101/177 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1256022 conditions, 98688 events (49225/98687 cut-off events. For 6690873/6770579 co-relation queries the response was YES. Maximal size of possible extension queue 4929. Compared 1208682 event pairs, 4018 based on Foata normal form. 2223/89589 useless extension candidates. Maximal degree in co-relation 910595. Up to 45050 conditions per place.). - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (52states, 101/177 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1256022 conditions, 98688 events (49225/98687 cut-off events. For 6690873/6770579 co-relation queries the response was YES. Maximal size of possible extension queue 4929. Compared 1208682 event pairs, 4018 based on Foata normal form. 2223/89589 useless extension candidates. Maximal degree in co-relation 910595. Up to 45050 conditions per place.). - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (52states, 101/177 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1256022 conditions, 98688 events (49225/98687 cut-off events. For 6690873/6770579 co-relation queries the response was YES. Maximal size of possible extension queue 4929. Compared 1208682 event pairs, 4018 based on Foata normal form. 2223/89589 useless extension candidates. Maximal degree in co-relation 910595. Up to 45050 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 208 locations, 21 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 767.2s, OverallIterations: 24, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 724.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 175 mSolverCounterUnknown, 10589 SdHoareTripleChecker+Valid, 33.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10589 mSDsluCounter, 6420 SdHoareTripleChecker+Invalid, 31.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 390 IncrementalHoareTripleChecker+Unchecked, 5928 mSDsCounter, 1252 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26594 IncrementalHoareTripleChecker+Invalid, 28411 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1252 mSolverCounterUnsat, 492 mSDtfsCounter, 26594 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4199 GetRequests, 2904 SyntacticMatches, 12 SemanticMatches, 1283 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 34520 ImplicationChecksByTransitivity, 45.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=661923occurred in iteration=23, InterpolantAutomatonStates: 651, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 36.6s InterpolantComputationTime, 4378 NumberOfCodeBlocks, 4248 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 5621 ConstructedInterpolants, 294 QuantifiedInterpolants, 74861 SizeOfPredicates, 255 NumberOfNonLiveVariables, 4571 ConjunctsInSsa, 381 ConjunctsInUnsatCore, 55 InterpolantComputations, 12 PerfectInterpolantSequences, 253/755 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown