/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/unroll-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 08:56:01,906 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 08:56:01,994 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 08:56:01,999 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 08:56:01,999 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 08:56:02,032 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 08:56:02,033 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 08:56:02,033 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 08:56:02,034 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 08:56:02,034 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 08:56:02,035 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 08:56:02,035 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 08:56:02,035 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 08:56:02,036 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 08:56:02,036 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 08:56:02,036 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 08:56:02,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 08:56:02,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 08:56:02,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 08:56:02,037 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 08:56:02,038 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 08:56:02,040 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 08:56:02,040 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 08:56:02,041 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 08:56:02,041 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 08:56:02,041 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 08:56:02,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 08:56:02,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 08:56:02,042 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 08:56:02,042 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 08:56:02,043 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 08:56:02,043 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 08:56:02,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 08:56:02,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 08:56:02,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 08:56:02,044 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 08:56:02,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 08:56:02,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 08:56:02,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 08:56:02,372 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 08:56:02,373 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 08:56:02,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-5.wvr.c [2023-08-27 08:56:03,495 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 08:56:03,726 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 08:56:03,727 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-5.wvr.c [2023-08-27 08:56:03,733 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ca23b152/a305461438df46a8ada85e33d6ec068e/FLAG38560cc77 [2023-08-27 08:56:03,749 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ca23b152/a305461438df46a8ada85e33d6ec068e [2023-08-27 08:56:03,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 08:56:03,755 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 08:56:03,756 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 08:56:03,757 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 08:56:03,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 08:56:03,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 08:56:03" (1/1) ... [2023-08-27 08:56:03,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aae02ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:56:03, skipping insertion in model container [2023-08-27 08:56:03,761 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 08:56:03" (1/1) ... [2023-08-27 08:56:03,786 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 08:56:03,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 08:56:03,998 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 08:56:04,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 08:56:04,045 INFO L206 MainTranslator]: Completed translation [2023-08-27 08:56:04,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:56:04 WrapperNode [2023-08-27 08:56:04,046 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 08:56:04,047 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 08:56:04,048 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 08:56:04,048 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 08:56:04,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:56:04" (1/1) ... [2023-08-27 08:56:04,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:56:04" (1/1) ... [2023-08-27 08:56:04,104 INFO L138 Inliner]: procedures = 24, calls = 39, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 172 [2023-08-27 08:56:04,105 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 08:56:04,106 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 08:56:04,106 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 08:56:04,106 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 08:56:04,113 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:56:04" (1/1) ... [2023-08-27 08:56:04,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:56:04" (1/1) ... [2023-08-27 08:56:04,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:56:04" (1/1) ... [2023-08-27 08:56:04,126 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:56:04" (1/1) ... [2023-08-27 08:56:04,134 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:56:04" (1/1) ... [2023-08-27 08:56:04,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:56:04" (1/1) ... [2023-08-27 08:56:04,138 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:56:04" (1/1) ... [2023-08-27 08:56:04,139 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:56:04" (1/1) ... [2023-08-27 08:56:04,153 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 08:56:04,154 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 08:56:04,154 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 08:56:04,154 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 08:56:04,154 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:56:04" (1/1) ... [2023-08-27 08:56:04,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 08:56:04,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:56:04,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 08:56:04,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 08:56:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 08:56:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 08:56:04,220 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 08:56:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 08:56:04,220 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 08:56:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 08:56:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 08:56:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 08:56:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 08:56:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 08:56:04,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 08:56:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 08:56:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 08:56:04,223 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 08:56:04,337 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 08:56:04,338 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 08:56:04,561 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 08:56:04,570 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 08:56:04,570 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-27 08:56:04,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 08:56:04 BoogieIcfgContainer [2023-08-27 08:56:04,572 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 08:56:04,574 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 08:56:04,574 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 08:56:04,577 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 08:56:04,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 08:56:03" (1/3) ... [2023-08-27 08:56:04,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63305378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 08:56:04, skipping insertion in model container [2023-08-27 08:56:04,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:56:04" (2/3) ... [2023-08-27 08:56:04,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63305378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 08:56:04, skipping insertion in model container [2023-08-27 08:56:04,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 08:56:04" (3/3) ... [2023-08-27 08:56:04,580 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-5.wvr.c [2023-08-27 08:56:04,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 08:56:04,596 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-27 08:56:04,596 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 08:56:04,680 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 08:56:04,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 202 transitions, 420 flow [2023-08-27 08:56:04,824 INFO L124 PetriNetUnfolderBase]: 17/200 cut-off events. [2023-08-27 08:56:04,825 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 08:56:04,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 200 events. 17/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 180 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-08-27 08:56:04,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 202 transitions, 420 flow [2023-08-27 08:56:04,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 191 transitions, 394 flow [2023-08-27 08:56:04,838 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 08:56:04,853 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 191 transitions, 394 flow [2023-08-27 08:56:04,860 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 191 transitions, 394 flow [2023-08-27 08:56:04,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 191 transitions, 394 flow [2023-08-27 08:56:04,895 INFO L124 PetriNetUnfolderBase]: 17/191 cut-off events. [2023-08-27 08:56:04,895 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 08:56:04,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 191 events. 17/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 159 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-08-27 08:56:04,899 INFO L119 LiptonReduction]: Number of co-enabled transitions 3892 [2023-08-27 08:56:10,509 INFO L134 LiptonReduction]: Checked pairs total: 3818 [2023-08-27 08:56:10,509 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-08-27 08:56:10,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 08:56:10,526 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ee26653, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 08:56:10,526 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-27 08:56:10,528 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 08:56:10,528 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 08:56:10,529 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 08:56:10,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:56:10,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 08:56:10,530 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 08:56:10,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:56:10,534 INFO L85 PathProgramCache]: Analyzing trace with hash 26497, now seen corresponding path program 1 times [2023-08-27 08:56:10,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:56:10,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649948358] [2023-08-27 08:56:10,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:56:10,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:56:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:56:10,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:56:10,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:56:10,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649948358] [2023-08-27 08:56:10,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649948358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:56:10,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:56:10,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 08:56:10,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168698104] [2023-08-27 08:56:10,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:56:10,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:56:10,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:56:10,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:56:10,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:56:10,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 432 [2023-08-27 08:56:10,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:10,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:56:10,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 432 [2023-08-27 08:56:10,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:56:10,871 INFO L124 PetriNetUnfolderBase]: 46/83 cut-off events. [2023-08-27 08:56:10,871 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 08:56:10,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 83 events. 46/83 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 178 event pairs, 18 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 120. Up to 79 conditions per place. [2023-08-27 08:56:10,873 INFO L140 encePairwiseOnDemand]: 427/432 looper letters, 16 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2023-08-27 08:56:10,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 92 flow [2023-08-27 08:56:10,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:56:10,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:56:10,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2023-08-27 08:56:10,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212962962962963 [2023-08-27 08:56:10,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2023-08-27 08:56:10,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2023-08-27 08:56:10,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:56:10,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2023-08-27 08:56:10,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:10,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:10,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:10,903 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 50 flow. Second operand 3 states and 546 transitions. [2023-08-27 08:56:10,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 92 flow [2023-08-27 08:56:10,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 84 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 08:56:10,907 INFO L231 Difference]: Finished difference. Result has 22 places, 21 transitions, 63 flow [2023-08-27 08:56:10,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=22, PETRI_TRANSITIONS=21} [2023-08-27 08:56:10,911 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -1 predicate places. [2023-08-27 08:56:10,911 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 21 transitions, 63 flow [2023-08-27 08:56:10,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:10,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:56:10,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 08:56:10,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 08:56:10,912 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 08:56:10,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:56:10,913 INFO L85 PathProgramCache]: Analyzing trace with hash 822639, now seen corresponding path program 1 times [2023-08-27 08:56:10,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:56:10,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886601857] [2023-08-27 08:56:10,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:56:10,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:56:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:56:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:56:11,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:56:11,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886601857] [2023-08-27 08:56:11,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886601857] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:56:11,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213951560] [2023-08-27 08:56:11,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:56:11,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:56:11,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:56:11,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:56:11,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 08:56:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:56:11,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 08:56:11,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:56:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:56:11,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:56:11,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:56:11,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213951560] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:56:11,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:56:11,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 08:56:11,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86832963] [2023-08-27 08:56:11,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:56:11,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 08:56:11,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:56:11,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 08:56:11,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:56:11,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 432 [2023-08-27 08:56:11,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 21 transitions, 63 flow. Second operand has 7 states, 7 states have (on average 176.14285714285714) internal successors, (1233), 7 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:11,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:56:11,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 432 [2023-08-27 08:56:11,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:56:11,304 INFO L124 PetriNetUnfolderBase]: 52/92 cut-off events. [2023-08-27 08:56:11,304 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 08:56:11,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 92 events. 52/92 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 216 event pairs, 18 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 152. Up to 81 conditions per place. [2023-08-27 08:56:11,306 INFO L140 encePairwiseOnDemand]: 427/432 looper letters, 15 selfloop transitions, 13 changer transitions 0/30 dead transitions. [2023-08-27 08:56:11,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 30 transitions, 155 flow [2023-08-27 08:56:11,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 08:56:11,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 08:56:11,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1256 transitions. [2023-08-27 08:56:11,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2023-08-27 08:56:11,311 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1256 transitions. [2023-08-27 08:56:11,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1256 transitions. [2023-08-27 08:56:11,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:56:11,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1256 transitions. [2023-08-27 08:56:11,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.42857142857142) internal successors, (1256), 7 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:11,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 432.0) internal successors, (3456), 8 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:11,323 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 432.0) internal successors, (3456), 8 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:11,323 INFO L175 Difference]: Start difference. First operand has 22 places, 21 transitions, 63 flow. Second operand 7 states and 1256 transitions. [2023-08-27 08:56:11,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 30 transitions, 155 flow [2023-08-27 08:56:11,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 150 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 08:56:11,324 INFO L231 Difference]: Finished difference. Result has 30 places, 30 transitions, 142 flow [2023-08-27 08:56:11,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=142, PETRI_PLACES=30, PETRI_TRANSITIONS=30} [2023-08-27 08:56:11,325 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 7 predicate places. [2023-08-27 08:56:11,325 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 30 transitions, 142 flow [2023-08-27 08:56:11,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 176.14285714285714) internal successors, (1233), 7 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:11,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:56:11,327 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-27 08:56:11,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 08:56:11,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:56:11,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 08:56:11,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:56:11,533 INFO L85 PathProgramCache]: Analyzing trace with hash 25503042, now seen corresponding path program 1 times [2023-08-27 08:56:11,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:56:11,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652171576] [2023-08-27 08:56:11,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:56:11,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:56:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:56:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:56:11,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:56:11,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652171576] [2023-08-27 08:56:11,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652171576] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:56:11,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769731316] [2023-08-27 08:56:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:56:11,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:56:11,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:56:11,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:56:11,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 08:56:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:56:11,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 08:56:11,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:56:11,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:56:11,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 08:56:11,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769731316] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:56:11,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 08:56:11,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 08:56:11,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58449938] [2023-08-27 08:56:11,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:56:11,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:56:11,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:56:11,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:56:11,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 08:56:11,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 432 [2023-08-27 08:56:11,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 30 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 175.8) internal successors, (879), 5 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:11,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:56:11,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 432 [2023-08-27 08:56:11,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:56:11,812 INFO L124 PetriNetUnfolderBase]: 49/88 cut-off events. [2023-08-27 08:56:11,813 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 08:56:11,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 88 events. 49/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 208 event pairs, 18 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 178. Up to 78 conditions per place. [2023-08-27 08:56:11,814 INFO L140 encePairwiseOnDemand]: 428/432 looper letters, 16 selfloop transitions, 8 changer transitions 0/26 dead transitions. [2023-08-27 08:56:11,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 163 flow [2023-08-27 08:56:11,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 08:56:11,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 08:56:11,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 897 transitions. [2023-08-27 08:56:11,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152777777777778 [2023-08-27 08:56:11,818 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 897 transitions. [2023-08-27 08:56:11,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 897 transitions. [2023-08-27 08:56:11,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:56:11,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 897 transitions. [2023-08-27 08:56:11,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.4) internal successors, (897), 5 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:11,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 432.0) internal successors, (2592), 6 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:11,825 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 432.0) internal successors, (2592), 6 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:11,826 INFO L175 Difference]: Start difference. First operand has 30 places, 30 transitions, 142 flow. Second operand 5 states and 897 transitions. [2023-08-27 08:56:11,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 163 flow [2023-08-27 08:56:11,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 142 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 08:56:11,830 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 110 flow [2023-08-27 08:56:11,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-08-27 08:56:11,831 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 8 predicate places. [2023-08-27 08:56:11,831 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 110 flow [2023-08-27 08:56:11,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.8) internal successors, (879), 5 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:11,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:56:11,832 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 08:56:11,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 08:56:12,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-27 08:56:12,038 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 08:56:12,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:56:12,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1261341951, now seen corresponding path program 2 times [2023-08-27 08:56:12,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:56:12,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494550173] [2023-08-27 08:56:12,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:56:12,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:56:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:56:12,206 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:56:12,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:56:12,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494550173] [2023-08-27 08:56:12,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494550173] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:56:12,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895671651] [2023-08-27 08:56:12,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 08:56:12,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:56:12,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:56:12,209 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:56:12,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 08:56:12,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 08:56:12,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:56:12,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 08:56:12,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:56:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 08:56:12,310 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 08:56:12,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895671651] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:56:12,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 08:56:12,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 08:56:12,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138969072] [2023-08-27 08:56:12,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:56:12,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:56:12,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:56:12,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:56:12,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 08:56:12,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 432 [2023-08-27 08:56:12,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:12,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:56:12,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 432 [2023-08-27 08:56:12,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:56:12,382 INFO L124 PetriNetUnfolderBase]: 49/87 cut-off events. [2023-08-27 08:56:12,382 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 08:56:12,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 87 events. 49/87 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 185 event pairs, 18 based on Foata normal form. 1/59 useless extension candidates. Maximal degree in co-relation 179. Up to 83 conditions per place. [2023-08-27 08:56:12,383 INFO L140 encePairwiseOnDemand]: 430/432 looper letters, 22 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-08-27 08:56:12,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 146 flow [2023-08-27 08:56:12,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:56:12,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:56:12,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2023-08-27 08:56:12,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2023-08-27 08:56:12,385 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2023-08-27 08:56:12,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2023-08-27 08:56:12,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:56:12,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2023-08-27 08:56:12,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:12,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:12,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:12,395 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 110 flow. Second operand 3 states and 544 transitions. [2023-08-27 08:56:12,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 146 flow [2023-08-27 08:56:12,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 118 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-27 08:56:12,399 INFO L231 Difference]: Finished difference. Result has 25 places, 25 transitions, 74 flow [2023-08-27 08:56:12,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=25} [2023-08-27 08:56:12,400 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2023-08-27 08:56:12,400 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 25 transitions, 74 flow [2023-08-27 08:56:12,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:12,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:56:12,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:56:12,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 08:56:12,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:56:12,607 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 08:56:12,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:56:12,608 INFO L85 PathProgramCache]: Analyzing trace with hash -2052101733, now seen corresponding path program 1 times [2023-08-27 08:56:12,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:56:12,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632822201] [2023-08-27 08:56:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:56:12,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:56:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:56:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:56:12,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:56:12,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632822201] [2023-08-27 08:56:12,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632822201] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:56:12,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:56:12,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 08:56:12,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104065621] [2023-08-27 08:56:12,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:56:12,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:56:12,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:56:12,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:56:12,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:56:12,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 432 [2023-08-27 08:56:12,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 25 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:12,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:56:12,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 432 [2023-08-27 08:56:12,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:56:12,770 INFO L124 PetriNetUnfolderBase]: 48/86 cut-off events. [2023-08-27 08:56:12,771 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 08:56:12,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 86 events. 48/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 188 event pairs, 18 based on Foata normal form. 1/58 useless extension candidates. Maximal degree in co-relation 176. Up to 82 conditions per place. [2023-08-27 08:56:12,773 INFO L140 encePairwiseOnDemand]: 429/432 looper letters, 20 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-08-27 08:56:12,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 114 flow [2023-08-27 08:56:12,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:56:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:56:12,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2023-08-27 08:56:12,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089506172839506 [2023-08-27 08:56:12,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2023-08-27 08:56:12,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2023-08-27 08:56:12,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:56:12,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2023-08-27 08:56:12,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:12,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:12,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:12,780 INFO L175 Difference]: Start difference. First operand has 25 places, 25 transitions, 74 flow. Second operand 3 states and 530 transitions. [2023-08-27 08:56:12,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 114 flow [2023-08-27 08:56:12,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 24 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 08:56:12,781 INFO L231 Difference]: Finished difference. Result has 26 places, 24 transitions, 73 flow [2023-08-27 08:56:12,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=26, PETRI_TRANSITIONS=24} [2023-08-27 08:56:12,782 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-08-27 08:56:12,782 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 73 flow [2023-08-27 08:56:12,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:12,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:56:12,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:56:12,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 08:56:12,783 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 08:56:12,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:56:12,783 INFO L85 PathProgramCache]: Analyzing trace with hash -2122573175, now seen corresponding path program 1 times [2023-08-27 08:56:12,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:56:12,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168360774] [2023-08-27 08:56:12,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:56:12,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:56:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:56:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:56:12,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:56:12,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168360774] [2023-08-27 08:56:12,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168360774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:56:12,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:56:12,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 08:56:12,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285832311] [2023-08-27 08:56:12,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:56:12,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:56:12,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:56:12,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:56:12,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:56:12,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 432 [2023-08-27 08:56:12,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:12,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:56:12,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 432 [2023-08-27 08:56:12,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:56:13,018 INFO L124 PetriNetUnfolderBase]: 69/123 cut-off events. [2023-08-27 08:56:13,018 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 08:56:13,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 123 events. 69/123 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 326 event pairs, 9 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 253. Up to 85 conditions per place. [2023-08-27 08:56:13,019 INFO L140 encePairwiseOnDemand]: 428/432 looper letters, 28 selfloop transitions, 3 changer transitions 1/34 dead transitions. [2023-08-27 08:56:13,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 34 transitions, 160 flow [2023-08-27 08:56:13,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:56:13,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:56:13,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-08-27 08:56:13,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3950617283950617 [2023-08-27 08:56:13,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-08-27 08:56:13,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-08-27 08:56:13,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:56:13,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-08-27 08:56:13,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:13,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:13,025 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:13,025 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 73 flow. Second operand 3 states and 512 transitions. [2023-08-27 08:56:13,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 34 transitions, 160 flow [2023-08-27 08:56:13,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 34 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 08:56:13,026 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 88 flow [2023-08-27 08:56:13,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2023-08-27 08:56:13,027 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 4 predicate places. [2023-08-27 08:56:13,027 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 88 flow [2023-08-27 08:56:13,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:13,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:56:13,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:56:13,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 08:56:13,028 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 08:56:13,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:56:13,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2094009394, now seen corresponding path program 1 times [2023-08-27 08:56:13,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:56:13,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980254807] [2023-08-27 08:56:13,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:56:13,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:56:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:56:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:56:13,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:56:13,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980254807] [2023-08-27 08:56:13,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980254807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:56:13,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:56:13,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 08:56:13,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540101001] [2023-08-27 08:56:13,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:56:13,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 08:56:13,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:56:13,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 08:56:13,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 08:56:13,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 432 [2023-08-27 08:56:13,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:13,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:56:13,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 432 [2023-08-27 08:56:13,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:56:13,184 INFO L124 PetriNetUnfolderBase]: 83/155 cut-off events. [2023-08-27 08:56:13,184 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-27 08:56:13,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 155 events. 83/155 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 471 event pairs, 23 based on Foata normal form. 4/159 useless extension candidates. Maximal degree in co-relation 372. Up to 100 conditions per place. [2023-08-27 08:56:13,185 INFO L140 encePairwiseOnDemand]: 428/432 looper letters, 35 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-08-27 08:56:13,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 40 transitions, 206 flow [2023-08-27 08:56:13,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 08:56:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 08:56:13,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 690 transitions. [2023-08-27 08:56:13,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2023-08-27 08:56:13,187 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 690 transitions. [2023-08-27 08:56:13,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 690 transitions. [2023-08-27 08:56:13,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:56:13,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 690 transitions. [2023-08-27 08:56:13,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:13,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:13,192 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:13,192 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 88 flow. Second operand 4 states and 690 transitions. [2023-08-27 08:56:13,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 40 transitions, 206 flow [2023-08-27 08:56:13,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 08:56:13,194 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 112 flow [2023-08-27 08:56:13,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2023-08-27 08:56:13,194 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 8 predicate places. [2023-08-27 08:56:13,195 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 112 flow [2023-08-27 08:56:13,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:13,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:56:13,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:56:13,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 08:56:13,195 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 08:56:13,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:56:13,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1568265104, now seen corresponding path program 2 times [2023-08-27 08:56:13,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:56:13,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438304010] [2023-08-27 08:56:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:56:13,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:56:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:56:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:56:13,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:56:13,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438304010] [2023-08-27 08:56:13,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438304010] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:56:13,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24378266] [2023-08-27 08:56:13,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 08:56:13,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:56:13,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:56:13,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:56:13,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 08:56:13,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 08:56:13,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:56:13,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 08:56:13,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:56:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:56:13,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 08:56:13,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24378266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:56:13,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 08:56:13,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-08-27 08:56:13,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852425785] [2023-08-27 08:56:13,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:56:13,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 08:56:13,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:56:13,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 08:56:13,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:56:13,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 432 [2023-08-27 08:56:13,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:13,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:56:13,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 432 [2023-08-27 08:56:13,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:56:13,506 INFO L124 PetriNetUnfolderBase]: 91/169 cut-off events. [2023-08-27 08:56:13,506 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-08-27 08:56:13,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 169 events. 91/169 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 526 event pairs, 19 based on Foata normal form. 6/175 useless extension candidates. Maximal degree in co-relation 506. Up to 106 conditions per place. [2023-08-27 08:56:13,507 INFO L140 encePairwiseOnDemand]: 428/432 looper letters, 36 selfloop transitions, 4 changer transitions 2/43 dead transitions. [2023-08-27 08:56:13,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 43 transitions, 246 flow [2023-08-27 08:56:13,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 08:56:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 08:56:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 694 transitions. [2023-08-27 08:56:13,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40162037037037035 [2023-08-27 08:56:13,510 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 694 transitions. [2023-08-27 08:56:13,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 694 transitions. [2023-08-27 08:56:13,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:56:13,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 694 transitions. [2023-08-27 08:56:13,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:13,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:13,515 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:13,515 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 112 flow. Second operand 4 states and 694 transitions. [2023-08-27 08:56:13,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 43 transitions, 246 flow [2023-08-27 08:56:13,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 43 transitions, 235 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 08:56:13,517 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 133 flow [2023-08-27 08:56:13,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-08-27 08:56:13,517 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 12 predicate places. [2023-08-27 08:56:13,518 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 133 flow [2023-08-27 08:56:13,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:13,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:56:13,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:56:13,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-27 08:56:13,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:56:13,724 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 08:56:13,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:56:13,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1639581326, now seen corresponding path program 3 times [2023-08-27 08:56:13,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:56:13,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760953559] [2023-08-27 08:56:13,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:56:13,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:56:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:56:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:56:13,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:56:13,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760953559] [2023-08-27 08:56:13,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760953559] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:56:13,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044478999] [2023-08-27 08:56:13,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 08:56:13,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:56:13,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:56:13,835 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:56:13,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 08:56:13,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 08:56:13,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:56:13,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 08:56:13,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:56:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:56:13,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 08:56:13,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044478999] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:56:13,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 08:56:13,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-08-27 08:56:13,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766006522] [2023-08-27 08:56:13,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:56:13,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 08:56:13,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:56:13,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 08:56:13,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:56:13,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 432 [2023-08-27 08:56:13,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:13,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:56:13,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 432 [2023-08-27 08:56:13,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:56:14,018 INFO L124 PetriNetUnfolderBase]: 93/169 cut-off events. [2023-08-27 08:56:14,018 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2023-08-27 08:56:14,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 169 events. 93/169 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 521 event pairs, 23 based on Foata normal form. 6/175 useless extension candidates. Maximal degree in co-relation 533. Up to 112 conditions per place. [2023-08-27 08:56:14,019 INFO L140 encePairwiseOnDemand]: 428/432 looper letters, 32 selfloop transitions, 8 changer transitions 2/43 dead transitions. [2023-08-27 08:56:14,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 267 flow [2023-08-27 08:56:14,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 08:56:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 08:56:14,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 691 transitions. [2023-08-27 08:56:14,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39988425925925924 [2023-08-27 08:56:14,023 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 691 transitions. [2023-08-27 08:56:14,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 691 transitions. [2023-08-27 08:56:14,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:56:14,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 691 transitions. [2023-08-27 08:56:14,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:14,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:14,028 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:14,028 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 133 flow. Second operand 4 states and 691 transitions. [2023-08-27 08:56:14,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 267 flow [2023-08-27 08:56:14,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 258 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 08:56:14,032 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 167 flow [2023-08-27 08:56:14,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-08-27 08:56:14,033 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 15 predicate places. [2023-08-27 08:56:14,033 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 167 flow [2023-08-27 08:56:14,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:14,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:56:14,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:56:14,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 08:56:14,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:56:14,240 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 08:56:14,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:56:14,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1180717303, now seen corresponding path program 1 times [2023-08-27 08:56:14,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:56:14,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233950328] [2023-08-27 08:56:14,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:56:14,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:56:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:56:14,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:56:14,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:56:14,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233950328] [2023-08-27 08:56:14,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233950328] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:56:14,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:56:14,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 08:56:14,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563502905] [2023-08-27 08:56:14,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:56:14,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 08:56:14,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:56:14,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 08:56:14,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 08:56:14,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 432 [2023-08-27 08:56:14,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:14,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:56:14,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 432 [2023-08-27 08:56:14,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:56:14,450 INFO L124 PetriNetUnfolderBase]: 84/160 cut-off events. [2023-08-27 08:56:14,450 INFO L125 PetriNetUnfolderBase]: For 311/333 co-relation queries the response was YES. [2023-08-27 08:56:14,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 160 events. 84/160 cut-off events. For 311/333 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 492 event pairs, 24 based on Foata normal form. 21/178 useless extension candidates. Maximal degree in co-relation 523. Up to 115 conditions per place. [2023-08-27 08:56:14,451 INFO L140 encePairwiseOnDemand]: 428/432 looper letters, 39 selfloop transitions, 5 changer transitions 2/48 dead transitions. [2023-08-27 08:56:14,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 48 transitions, 316 flow [2023-08-27 08:56:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 08:56:14,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 08:56:14,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 724 transitions. [2023-08-27 08:56:14,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41898148148148145 [2023-08-27 08:56:14,455 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 724 transitions. [2023-08-27 08:56:14,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 724 transitions. [2023-08-27 08:56:14,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:56:14,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 724 transitions. [2023-08-27 08:56:14,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:14,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:14,461 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:14,461 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 167 flow. Second operand 4 states and 724 transitions. [2023-08-27 08:56:14,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 48 transitions, 316 flow [2023-08-27 08:56:14,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 48 transitions, 294 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-27 08:56:14,465 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 181 flow [2023-08-27 08:56:14,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-08-27 08:56:14,466 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 16 predicate places. [2023-08-27 08:56:14,466 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 181 flow [2023-08-27 08:56:14,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:14,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:56:14,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:56:14,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 08:56:14,467 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 08:56:14,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:56:14,468 INFO L85 PathProgramCache]: Analyzing trace with hash 970700151, now seen corresponding path program 2 times [2023-08-27 08:56:14,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:56:14,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782492725] [2023-08-27 08:56:14,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:56:14,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:56:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:56:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:56:14,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:56:14,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782492725] [2023-08-27 08:56:14,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782492725] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:56:14,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860627252] [2023-08-27 08:56:14,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 08:56:14,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:56:14,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:56:14,606 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:56:14,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 08:56:14,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 08:56:14,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:56:14,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 08:56:14,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:56:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:56:14,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:56:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:56:14,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860627252] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 08:56:14,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 08:56:14,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2023-08-27 08:56:14,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19016881] [2023-08-27 08:56:14,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:56:14,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 08:56:14,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:56:14,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 08:56:14,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 08:56:14,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 432 [2023-08-27 08:56:14,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:14,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:56:14,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 432 [2023-08-27 08:56:14,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:56:14,886 INFO L124 PetriNetUnfolderBase]: 90/173 cut-off events. [2023-08-27 08:56:14,887 INFO L125 PetriNetUnfolderBase]: For 270/278 co-relation queries the response was YES. [2023-08-27 08:56:14,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 173 events. 90/173 cut-off events. For 270/278 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 519 event pairs, 18 based on Foata normal form. 10/178 useless extension candidates. Maximal degree in co-relation 627. Up to 128 conditions per place. [2023-08-27 08:56:14,888 INFO L140 encePairwiseOnDemand]: 428/432 looper letters, 35 selfloop transitions, 5 changer transitions 3/45 dead transitions. [2023-08-27 08:56:14,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 313 flow [2023-08-27 08:56:14,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 08:56:14,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 08:56:14,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 722 transitions. [2023-08-27 08:56:14,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41782407407407407 [2023-08-27 08:56:14,891 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 722 transitions. [2023-08-27 08:56:14,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 722 transitions. [2023-08-27 08:56:14,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:56:14,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 722 transitions. [2023-08-27 08:56:14,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 180.5) internal successors, (722), 4 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:14,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:14,898 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 432.0) internal successors, (2160), 5 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:14,898 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 181 flow. Second operand 4 states and 722 transitions. [2023-08-27 08:56:14,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 313 flow [2023-08-27 08:56:14,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 299 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-27 08:56:14,900 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 204 flow [2023-08-27 08:56:14,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-08-27 08:56:14,901 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 20 predicate places. [2023-08-27 08:56:14,901 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 204 flow [2023-08-27 08:56:14,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:14,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:56:14,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:56:14,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 08:56:15,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:56:15,107 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 08:56:15,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:56:15,108 INFO L85 PathProgramCache]: Analyzing trace with hash -140098009, now seen corresponding path program 3 times [2023-08-27 08:56:15,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:56:15,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966173993] [2023-08-27 08:56:15,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:56:15,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:56:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:56:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:56:15,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:56:15,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966173993] [2023-08-27 08:56:15,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966173993] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:56:15,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135381344] [2023-08-27 08:56:15,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 08:56:15,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:56:15,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:56:15,214 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:56:15,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 08:56:15,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 08:56:15,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:56:15,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 08:56:15,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:56:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:56:15,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:56:15,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:56:15,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135381344] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:56:15,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:56:15,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-08-27 08:56:15,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902253162] [2023-08-27 08:56:15,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:56:15,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 08:56:15,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:56:15,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 08:56:15,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 08:56:15,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 432 [2023-08-27 08:56:15,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 204 flow. Second operand has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:15,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:56:15,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 432 [2023-08-27 08:56:15,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:56:15,504 INFO L124 PetriNetUnfolderBase]: 109/201 cut-off events. [2023-08-27 08:56:15,504 INFO L125 PetriNetUnfolderBase]: For 444/444 co-relation queries the response was YES. [2023-08-27 08:56:15,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 201 events. 109/201 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 622 event pairs, 31 based on Foata normal form. 4/205 useless extension candidates. Maximal degree in co-relation 770. Up to 140 conditions per place. [2023-08-27 08:56:15,506 INFO L140 encePairwiseOnDemand]: 427/432 looper letters, 37 selfloop transitions, 12 changer transitions 6/55 dead transitions. [2023-08-27 08:56:15,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 420 flow [2023-08-27 08:56:15,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 08:56:15,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 08:56:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 848 transitions. [2023-08-27 08:56:15,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925925925925926 [2023-08-27 08:56:15,509 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 848 transitions. [2023-08-27 08:56:15,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 848 transitions. [2023-08-27 08:56:15,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:56:15,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 848 transitions. [2023-08-27 08:56:15,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 169.6) internal successors, (848), 5 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:15,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 432.0) internal successors, (2592), 6 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:15,515 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 432.0) internal successors, (2592), 6 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:15,515 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 204 flow. Second operand 5 states and 848 transitions. [2023-08-27 08:56:15,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 420 flow [2023-08-27 08:56:15,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 404 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-27 08:56:15,518 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 281 flow [2023-08-27 08:56:15,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-08-27 08:56:15,518 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 24 predicate places. [2023-08-27 08:56:15,518 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 281 flow [2023-08-27 08:56:15,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:15,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:56:15,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:56:15,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 08:56:15,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:56:15,727 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 08:56:15,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:56:15,728 INFO L85 PathProgramCache]: Analyzing trace with hash -24114542, now seen corresponding path program 1 times [2023-08-27 08:56:15,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:56:15,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98242555] [2023-08-27 08:56:15,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:56:15,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:56:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:56:18,006 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (* 5 c_~n~0)) (.cse0 (div c_~n~0 4294967296))) (and (<= (+ |c_thread1Thread1of1ForFork1_~i~0#1| (* 21474836480 .cse0)) (+ .cse1 1)) (< c_~n~0 (+ (* 4294967296 .cse0) 858993459)) (<= (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) (* (div .cse1 4294967296) 17179869185) 1) (+ (* c_~n~0 20) (* 17179869185 (div |c_thread1Thread1of1ForFork1_~i~0#1| 4294967296)) (* 5 .cse0))))) is different from false [2023-08-27 08:56:18,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2023-08-27 08:56:18,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:56:18,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98242555] [2023-08-27 08:56:18,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98242555] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:56:18,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904644269] [2023-08-27 08:56:18,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:56:18,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:56:18,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:56:18,013 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:56:18,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 08:56:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:56:18,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 08:56:18,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:56:18,159 INFO L351 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 11 treesize of output 7 [2023-08-27 08:56:18,203 INFO L351 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 6 treesize of output 5 [2023-08-27 08:56:18,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 08:56:18,259 INFO L351 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 14 treesize of output 16 [2023-08-27 08:56:18,423 INFO L322 Elim1Store]: treesize reduction 37, result has 71.3 percent of original size [2023-08-27 08:56:18,424 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 95 treesize of output 124 [2023-08-27 08:56:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:56:18,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:56:19,100 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_317 (Array Int Int)) (~x2~0 Int)) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_317) c_~f~0.base))) (let ((.cse0 (select .cse1 (+ c_~f~0.offset (* 4 (select .cse1 (+ c_~f~0.offset (* 4 (select .cse1 (+ (* (select .cse1 (+ c_~f~0.offset (* ~x2~0 4))) 4) c_~f~0.offset)))))))))) (or (<= c_~size~0 .cse0) (< .cse0 0) (= c_~x1~0 (select .cse1 (+ (* .cse0 4) c_~f~0.offset))))))) is different from false [2023-08-27 08:56:20,705 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 08:56:20,705 INFO L351 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 371 treesize of output 215 [2023-08-27 08:56:20,805 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 08:56:20,806 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 700 treesize of output 708 [2023-08-27 08:56:20,908 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 08:56:20,909 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 370 treesize of output 342 [2023-08-27 08:56:21,067 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 08:56:21,067 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 151 treesize of output 245 [2023-08-27 08:56:25,948 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-27 08:56:25,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:56:25,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904644269] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:56:25,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:56:25,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 16 [2023-08-27 08:56:25,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623500217] [2023-08-27 08:56:25,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:56:25,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 08:56:25,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:56:25,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 08:56:25,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=146, Unknown=5, NotChecked=50, Total=240 [2023-08-27 08:56:25,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 432 [2023-08-27 08:56:25,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 281 flow. Second operand has 16 states, 16 states have (on average 121.6875) internal successors, (1947), 16 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:25,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:56:25,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 432 [2023-08-27 08:56:25,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:56:27,537 INFO L124 PetriNetUnfolderBase]: 236/420 cut-off events. [2023-08-27 08:56:27,537 INFO L125 PetriNetUnfolderBase]: For 977/1001 co-relation queries the response was YES. [2023-08-27 08:56:27,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 420 events. 236/420 cut-off events. For 977/1001 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1616 event pairs, 8 based on Foata normal form. 43/458 useless extension candidates. Maximal degree in co-relation 1753. Up to 202 conditions per place. [2023-08-27 08:56:27,540 INFO L140 encePairwiseOnDemand]: 422/432 looper letters, 31 selfloop transitions, 24 changer transitions 68/126 dead transitions. [2023-08-27 08:56:27,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 126 transitions, 995 flow [2023-08-27 08:56:27,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 08:56:27,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 08:56:27,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2359 transitions. [2023-08-27 08:56:27,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28740253411306044 [2023-08-27 08:56:27,547 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2359 transitions. [2023-08-27 08:56:27,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2359 transitions. [2023-08-27 08:56:27,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:56:27,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2359 transitions. [2023-08-27 08:56:27,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 124.15789473684211) internal successors, (2359), 19 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:27,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 432.0) internal successors, (8640), 20 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:27,564 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 432.0) internal successors, (8640), 20 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:27,564 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 281 flow. Second operand 19 states and 2359 transitions. [2023-08-27 08:56:27,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 126 transitions, 995 flow [2023-08-27 08:56:27,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 126 transitions, 963 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-27 08:56:27,568 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 422 flow [2023-08-27 08:56:27,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=422, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2023-08-27 08:56:27,569 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 46 predicate places. [2023-08-27 08:56:27,569 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 422 flow [2023-08-27 08:56:27,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 121.6875) internal successors, (1947), 16 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:27,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:56:27,570 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:56:27,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 08:56:27,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-27 08:56:27,776 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 08:56:27,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:56:27,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1658336628, now seen corresponding path program 2 times [2023-08-27 08:56:27,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:56:27,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437688101] [2023-08-27 08:56:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:56:27,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:56:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:56:27,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 08:56:27,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:56:27,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437688101] [2023-08-27 08:56:27,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437688101] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:56:27,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238882457] [2023-08-27 08:56:27,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 08:56:27,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:56:27,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:56:27,984 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) [2023-08-27 08:56:28,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 08:56:28,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 08:56:28,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:56:28,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-27 08:56:28,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:56:28,161 INFO L351 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 11 treesize of output 7 [2023-08-27 08:56:28,206 INFO L351 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 6 treesize of output 5 [2023-08-27 08:56:28,240 INFO L351 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 6 treesize of output 5 [2023-08-27 08:56:28,367 INFO L322 Elim1Store]: treesize reduction 63, result has 22.2 percent of original size [2023-08-27 08:56:28,368 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 167 treesize of output 68 [2023-08-27 08:56:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:56:28,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:56:28,918 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 08:56:28,918 INFO L351 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 704 treesize of output 404 [2023-08-27 08:56:29,005 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 08:56:29,006 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 2190 treesize of output 1958 [2023-08-27 08:56:29,294 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 08:56:29,295 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 346 treesize of output 374 [2023-08-27 08:56:41,738 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 08:56:41,738 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 493 treesize of output 365 [2023-08-27 08:56:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:56:44,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238882457] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:56:44,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:56:44,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 19 [2023-08-27 08:56:44,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486930224] [2023-08-27 08:56:44,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:56:44,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 08:56:44,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:56:44,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 08:56:44,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=270, Unknown=3, NotChecked=0, Total=342 [2023-08-27 08:56:44,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 432 [2023-08-27 08:56:44,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 422 flow. Second operand has 19 states, 19 states have (on average 121.63157894736842) internal successors, (2311), 19 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:44,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:56:44,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 432 [2023-08-27 08:56:44,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:56:57,317 WARN L234 SmtUtils]: Spent 12.38s on a formula simplification. DAG size of input: 114 DAG size of output: 102 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 08:56:57,929 INFO L124 PetriNetUnfolderBase]: 244/438 cut-off events. [2023-08-27 08:56:57,929 INFO L125 PetriNetUnfolderBase]: For 2487/2529 co-relation queries the response was YES. [2023-08-27 08:56:57,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 438 events. 244/438 cut-off events. For 2487/2529 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1709 event pairs, 1 based on Foata normal form. 36/469 useless extension candidates. Maximal degree in co-relation 2672. Up to 277 conditions per place. [2023-08-27 08:56:57,934 INFO L140 encePairwiseOnDemand]: 423/432 looper letters, 70 selfloop transitions, 56 changer transitions 1/130 dead transitions. [2023-08-27 08:56:57,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 130 transitions, 1407 flow [2023-08-27 08:56:57,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 08:56:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 08:56:57,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2356 transitions. [2023-08-27 08:56:57,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28703703703703703 [2023-08-27 08:56:57,942 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2356 transitions. [2023-08-27 08:56:57,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2356 transitions. [2023-08-27 08:56:57,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:56:57,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2356 transitions. [2023-08-27 08:56:57,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:57,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 432.0) internal successors, (8640), 20 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:57,958 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 432.0) internal successors, (8640), 20 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:57,958 INFO L175 Difference]: Start difference. First operand has 69 places, 47 transitions, 422 flow. Second operand 19 states and 2356 transitions. [2023-08-27 08:56:57,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 130 transitions, 1407 flow [2023-08-27 08:56:57,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 130 transitions, 1069 flow, removed 133 selfloop flow, removed 15 redundant places. [2023-08-27 08:56:57,967 INFO L231 Difference]: Finished difference. Result has 69 places, 84 transitions, 838 flow [2023-08-27 08:56:57,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=838, PETRI_PLACES=69, PETRI_TRANSITIONS=84} [2023-08-27 08:56:57,967 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 46 predicate places. [2023-08-27 08:56:57,967 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 84 transitions, 838 flow [2023-08-27 08:56:57,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 121.63157894736842) internal successors, (2311), 19 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:57,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:56:57,968 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:56:57,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 08:56:58,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 08:56:58,174 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 08:56:58,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:56:58,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1250722725, now seen corresponding path program 3 times [2023-08-27 08:56:58,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:56:58,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337177854] [2023-08-27 08:56:58,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:56:58,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:56:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:56:58,578 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 08:56:58,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:56:58,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337177854] [2023-08-27 08:56:58,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337177854] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:56:58,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87508351] [2023-08-27 08:56:58,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 08:56:58,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:56:58,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:56:58,581 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) [2023-08-27 08:56:58,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 08:56:58,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 08:56:58,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:56:58,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 08:56:58,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:56:58,882 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 08:56:58,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:56:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 08:56:59,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87508351] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:56:59,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:56:59,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 08:56:59,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214521521] [2023-08-27 08:56:59,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:56:59,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 08:56:59,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:56:59,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 08:56:59,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-08-27 08:56:59,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 432 [2023-08-27 08:56:59,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 84 transitions, 838 flow. Second operand has 12 states, 12 states have (on average 175.41666666666666) internal successors, (2105), 12 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:56:59,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:56:59,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 432 [2023-08-27 08:56:59,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:57:01,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 08:57:01,770 INFO L124 PetriNetUnfolderBase]: 253/443 cut-off events. [2023-08-27 08:57:01,770 INFO L125 PetriNetUnfolderBase]: For 2452/2476 co-relation queries the response was YES. [2023-08-27 08:57:01,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2619 conditions, 443 events. 253/443 cut-off events. For 2452/2476 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1645 event pairs, 9 based on Foata normal form. 76/511 useless extension candidates. Maximal degree in co-relation 2595. Up to 302 conditions per place. [2023-08-27 08:57:01,774 INFO L140 encePairwiseOnDemand]: 427/432 looper letters, 91 selfloop transitions, 43 changer transitions 0/137 dead transitions. [2023-08-27 08:57:01,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 137 transitions, 1578 flow [2023-08-27 08:57:01,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 08:57:01,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 08:57:01,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1788 transitions. [2023-08-27 08:57:01,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2023-08-27 08:57:01,779 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1788 transitions. [2023-08-27 08:57:01,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1788 transitions. [2023-08-27 08:57:01,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:57:01,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1788 transitions. [2023-08-27 08:57:01,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 178.8) internal successors, (1788), 10 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) [2023-08-27 08:57:01,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 432.0) internal successors, (4752), 11 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:57:01,788 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 432.0) internal successors, (4752), 11 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:57:01,788 INFO L175 Difference]: Start difference. First operand has 69 places, 84 transitions, 838 flow. Second operand 10 states and 1788 transitions. [2023-08-27 08:57:01,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 137 transitions, 1578 flow [2023-08-27 08:57:01,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 137 transitions, 1422 flow, removed 52 selfloop flow, removed 9 redundant places. [2023-08-27 08:57:01,797 INFO L231 Difference]: Finished difference. Result has 69 places, 92 transitions, 871 flow [2023-08-27 08:57:01,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=871, PETRI_PLACES=69, PETRI_TRANSITIONS=92} [2023-08-27 08:57:01,798 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 46 predicate places. [2023-08-27 08:57:01,798 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 92 transitions, 871 flow [2023-08-27 08:57:01,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 175.41666666666666) internal successors, (2105), 12 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:57:01,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:57:01,799 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:57:01,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 08:57:02,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 08:57:02,005 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 08:57:02,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:57:02,005 INFO L85 PathProgramCache]: Analyzing trace with hash -884384832, now seen corresponding path program 4 times [2023-08-27 08:57:02,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:57:02,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807811483] [2023-08-27 08:57:02,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:57:02,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:57:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:57:06,543 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:57:06,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:57:06,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807811483] [2023-08-27 08:57:06,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807811483] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:57:06,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228921285] [2023-08-27 08:57:06,544 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 08:57:06,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:57:06,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:57:06,553 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) [2023-08-27 08:57:06,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 08:57:06,645 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 08:57:06,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:57:06,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 08:57:06,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:57:06,899 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 08:57:06,899 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 107 [2023-08-27 08:57:06,990 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:57:06,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:57:07,914 INFO L322 Elim1Store]: treesize reduction 25, result has 94.1 percent of original size [2023-08-27 08:57:07,914 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 83 treesize of output 467 [2023-08-27 08:57:10,212 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 08:57:10,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228921285] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:57:10,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:57:10,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 6] total 24 [2023-08-27 08:57:10,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18531493] [2023-08-27 08:57:10,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:57:10,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 08:57:10,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:57:10,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 08:57:10,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2023-08-27 08:57:10,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 432 [2023-08-27 08:57:10,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 92 transitions, 871 flow. Second operand has 26 states, 26 states have (on average 130.73076923076923) internal successors, (3399), 26 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:57:10,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:57:10,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 432 [2023-08-27 08:57:10,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:57:12,476 INFO L124 PetriNetUnfolderBase]: 761/1336 cut-off events. [2023-08-27 08:57:12,476 INFO L125 PetriNetUnfolderBase]: For 6279/6356 co-relation queries the response was YES. [2023-08-27 08:57:12,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7906 conditions, 1336 events. 761/1336 cut-off events. For 6279/6356 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6504 event pairs, 28 based on Foata normal form. 51/1368 useless extension candidates. Maximal degree in co-relation 7883. Up to 1060 conditions per place. [2023-08-27 08:57:12,487 INFO L140 encePairwiseOnDemand]: 425/432 looper letters, 155 selfloop transitions, 160 changer transitions 2/323 dead transitions. [2023-08-27 08:57:12,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 323 transitions, 3495 flow [2023-08-27 08:57:12,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-27 08:57:12,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-27 08:57:12,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4196 transitions. [2023-08-27 08:57:12,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31332138590203107 [2023-08-27 08:57:12,500 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4196 transitions. [2023-08-27 08:57:12,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4196 transitions. [2023-08-27 08:57:12,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:57:12,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4196 transitions. [2023-08-27 08:57:12,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 135.3548387096774) internal successors, (4196), 31 states have internal predecessors, (4196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:57:12,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 432.0) internal successors, (13824), 32 states have internal predecessors, (13824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:57:12,531 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 432.0) internal successors, (13824), 32 states have internal predecessors, (13824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:57:12,532 INFO L175 Difference]: Start difference. First operand has 69 places, 92 transitions, 871 flow. Second operand 31 states and 4196 transitions. [2023-08-27 08:57:12,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 323 transitions, 3495 flow [2023-08-27 08:57:12,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 323 transitions, 3142 flow, removed 121 selfloop flow, removed 6 redundant places. [2023-08-27 08:57:12,555 INFO L231 Difference]: Finished difference. Result has 99 places, 207 transitions, 2479 flow [2023-08-27 08:57:12,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2479, PETRI_PLACES=99, PETRI_TRANSITIONS=207} [2023-08-27 08:57:12,556 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 76 predicate places. [2023-08-27 08:57:12,556 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 207 transitions, 2479 flow [2023-08-27 08:57:12,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 130.73076923076923) internal successors, (3399), 26 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:57:12,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:57:12,557 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:57:12,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 08:57:12,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 08:57:12,763 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 08:57:12,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:57:12,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1101200904, now seen corresponding path program 5 times [2023-08-27 08:57:12,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:57:12,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027215309] [2023-08-27 08:57:12,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:57:12,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:57:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:57:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:57:15,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:57:15,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027215309] [2023-08-27 08:57:15,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027215309] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:57:15,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321280489] [2023-08-27 08:57:15,578 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 08:57:15,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:57:15,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:57:15,579 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) [2023-08-27 08:57:15,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 08:57:15,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-27 08:57:15,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:57:15,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 08:57:15,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:57:15,981 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 08:57:16,181 INFO L322 Elim1Store]: treesize reduction 272, result has 26.9 percent of original size [2023-08-27 08:57:16,181 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 65 treesize of output 146 [2023-08-27 08:57:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:57:16,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:57:17,327 INFO L322 Elim1Store]: treesize reduction 25, result has 94.1 percent of original size [2023-08-27 08:57:17,327 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 83 treesize of output 467 [2023-08-27 08:57:19,849 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 08:57:19,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321280489] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:57:19,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:57:19,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 24 [2023-08-27 08:57:19,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846726612] [2023-08-27 08:57:19,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:57:19,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 08:57:19,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:57:19,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 08:57:19,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2023-08-27 08:57:19,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 432 [2023-08-27 08:57:19,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 207 transitions, 2479 flow. Second operand has 26 states, 26 states have (on average 138.03846153846155) internal successors, (3589), 26 states have internal predecessors, (3589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:57:19,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:57:19,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 432 [2023-08-27 08:57:19,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:57:22,168 INFO L124 PetriNetUnfolderBase]: 1297/2301 cut-off events. [2023-08-27 08:57:22,168 INFO L125 PetriNetUnfolderBase]: For 10626/10707 co-relation queries the response was YES. [2023-08-27 08:57:22,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13731 conditions, 2301 events. 1297/2301 cut-off events. For 10626/10707 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12716 event pairs, 92 based on Foata normal form. 54/2343 useless extension candidates. Maximal degree in co-relation 13703. Up to 1872 conditions per place. [2023-08-27 08:57:22,188 INFO L140 encePairwiseOnDemand]: 425/432 looper letters, 172 selfloop transitions, 218 changer transitions 2/398 dead transitions. [2023-08-27 08:57:22,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 398 transitions, 4894 flow [2023-08-27 08:57:22,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-27 08:57:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-27 08:57:22,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4136 transitions. [2023-08-27 08:57:22,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3301404853128991 [2023-08-27 08:57:22,194 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4136 transitions. [2023-08-27 08:57:22,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4136 transitions. [2023-08-27 08:57:22,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:57:22,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4136 transitions. [2023-08-27 08:57:22,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 142.6206896551724) internal successors, (4136), 29 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:57:22,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 432.0) internal successors, (12960), 30 states have internal predecessors, (12960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:57:22,211 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 432.0) internal successors, (12960), 30 states have internal predecessors, (12960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:57:22,212 INFO L175 Difference]: Start difference. First operand has 99 places, 207 transitions, 2479 flow. Second operand 29 states and 4136 transitions. [2023-08-27 08:57:22,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 398 transitions, 4894 flow [2023-08-27 08:57:22,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 398 transitions, 4107 flow, removed 374 selfloop flow, removed 6 redundant places. [2023-08-27 08:57:22,259 INFO L231 Difference]: Finished difference. Result has 127 places, 285 transitions, 3490 flow [2023-08-27 08:57:22,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=1910, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3490, PETRI_PLACES=127, PETRI_TRANSITIONS=285} [2023-08-27 08:57:22,260 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 104 predicate places. [2023-08-27 08:57:22,260 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 285 transitions, 3490 flow [2023-08-27 08:57:22,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 138.03846153846155) internal successors, (3589), 26 states have internal predecessors, (3589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:57:22,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:57:22,261 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:57:22,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 08:57:22,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 08:57:22,467 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 08:57:22,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:57:22,468 INFO L85 PathProgramCache]: Analyzing trace with hash 110358712, now seen corresponding path program 6 times [2023-08-27 08:57:22,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:57:22,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013858825] [2023-08-27 08:57:22,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:57:22,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:57:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:57:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:57:26,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:57:26,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013858825] [2023-08-27 08:57:26,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013858825] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:57:26,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573262611] [2023-08-27 08:57:26,249 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 08:57:26,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:57:26,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:57:26,250 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) [2023-08-27 08:57:26,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 08:57:26,407 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-27 08:57:26,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:57:26,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-27 08:57:26,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:57:26,492 INFO L351 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 11 treesize of output 7 [2023-08-27 08:57:26,539 INFO L351 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 6 treesize of output 5 [2023-08-27 08:57:26,579 INFO L351 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 6 treesize of output 5 [2023-08-27 08:57:26,927 INFO L322 Elim1Store]: treesize reduction 63, result has 22.2 percent of original size [2023-08-27 08:57:26,927 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 153 treesize of output 62 [2023-08-27 08:57:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:57:26,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:57:27,932 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 08:57:27,933 INFO L351 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 808 treesize of output 460 [2023-08-27 08:57:28,826 INFO L322 Elim1Store]: treesize reduction 5, result has 98.8 percent of original size [2023-08-27 08:57:28,827 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 2398 treesize of output 2401 [2023-08-27 08:57:29,734 INFO L322 Elim1Store]: treesize reduction 8, result has 98.1 percent of original size [2023-08-27 08:57:29,735 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 541 treesize of output 661 [2023-08-27 08:57:44,742 INFO L322 Elim1Store]: treesize reduction 8, result has 98.1 percent of original size [2023-08-27 08:57:44,743 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 370 treesize of output 670 [2023-08-27 08:59:43,396 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 08:59:55,075 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 09:00:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:00:05,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573262611] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:00:05,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:00:05,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 32 [2023-08-27 09:00:05,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396819256] [2023-08-27 09:00:05,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:00:05,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-27 09:00:05,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:00:05,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-27 09:00:05,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=953, Unknown=2, NotChecked=0, Total=1122 [2023-08-27 09:00:05,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 432 [2023-08-27 09:00:05,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 285 transitions, 3490 flow. Second operand has 34 states, 34 states have (on average 130.61764705882354) internal successors, (4441), 34 states have internal predecessors, (4441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:00:05,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:00:05,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 432 [2023-08-27 09:00:05,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:00:09,659 INFO L124 PetriNetUnfolderBase]: 2327/4164 cut-off events. [2023-08-27 09:00:09,660 INFO L125 PetriNetUnfolderBase]: For 16840/16914 co-relation queries the response was YES. [2023-08-27 09:00:09,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23887 conditions, 4164 events. 2327/4164 cut-off events. For 16840/16914 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 26759 event pairs, 273 based on Foata normal form. 56/4209 useless extension candidates. Maximal degree in co-relation 23853. Up to 3458 conditions per place. [2023-08-27 09:00:09,691 INFO L140 encePairwiseOnDemand]: 425/432 looper letters, 274 selfloop transitions, 263 changer transitions 5/548 dead transitions. [2023-08-27 09:00:09,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 548 transitions, 7268 flow [2023-08-27 09:00:09,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-27 09:00:09,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-27 09:00:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3545 transitions. [2023-08-27 09:00:09,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3156160968660969 [2023-08-27 09:00:09,696 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3545 transitions. [2023-08-27 09:00:09,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3545 transitions. [2023-08-27 09:00:09,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:00:09,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3545 transitions. [2023-08-27 09:00:09,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 136.34615384615384) internal successors, (3545), 26 states have internal predecessors, (3545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:00:09,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 432.0) internal successors, (11664), 27 states have internal predecessors, (11664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:00:09,710 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 432.0) internal successors, (11664), 27 states have internal predecessors, (11664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:00:09,710 INFO L175 Difference]: Start difference. First operand has 127 places, 285 transitions, 3490 flow. Second operand 26 states and 3545 transitions. [2023-08-27 09:00:09,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 548 transitions, 7268 flow [2023-08-27 09:00:09,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 548 transitions, 6697 flow, removed 224 selfloop flow, removed 15 redundant places. [2023-08-27 09:00:09,806 INFO L231 Difference]: Finished difference. Result has 146 places, 426 transitions, 5993 flow [2023-08-27 09:00:09,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=3129, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5993, PETRI_PLACES=146, PETRI_TRANSITIONS=426} [2023-08-27 09:00:09,807 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 123 predicate places. [2023-08-27 09:00:09,807 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 426 transitions, 5993 flow [2023-08-27 09:00:09,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 130.61764705882354) internal successors, (4441), 34 states have internal predecessors, (4441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:00:09,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:00:09,808 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:00:09,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 09:00:10,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 09:00:10,015 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 09:00:10,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:00:10,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1804651580, now seen corresponding path program 7 times [2023-08-27 09:00:10,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:00:10,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082406158] [2023-08-27 09:00:10,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:00:10,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:00:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:00:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:00:12,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:00:12,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082406158] [2023-08-27 09:00:12,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082406158] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:00:12,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337496732] [2023-08-27 09:00:12,543 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 09:00:12,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:00:12,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:00:12,545 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) [2023-08-27 09:00:12,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 09:00:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:00:12,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-27 09:00:12,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:00:12,726 INFO L351 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 11 treesize of output 7 [2023-08-27 09:00:12,777 INFO L351 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 6 treesize of output 5 [2023-08-27 09:00:12,811 INFO L351 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 6 treesize of output 5 [2023-08-27 09:00:13,113 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:00:13,113 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 101 treesize of output 113 [2023-08-27 09:00:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:00:13,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:00:13,866 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:00:13,866 INFO L351 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 588 treesize of output 336 [2023-08-27 09:00:14,799 INFO L322 Elim1Store]: treesize reduction 5, result has 98.8 percent of original size [2023-08-27 09:00:14,800 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 1610 treesize of output 1741 [2023-08-27 09:00:15,832 INFO L322 Elim1Store]: treesize reduction 8, result has 98.1 percent of original size [2023-08-27 09:00:15,832 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 238 treesize of output 586 [2023-08-27 09:01:50,283 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 09:01:51,671 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 09:04:13,837 INFO L322 Elim1Store]: treesize reduction 8, result has 98.1 percent of original size [2023-08-27 09:04:13,838 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 365 treesize of output 581 [2023-08-27 09:04:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:04:21,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337496732] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:04:21,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:04:21,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-27 09:04:21,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868684047] [2023-08-27 09:04:21,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:04:21,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-27 09:04:21,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:04:21,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-27 09:04:21,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=893, Unknown=3, NotChecked=0, Total=1056 [2023-08-27 09:04:21,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 432 [2023-08-27 09:04:21,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 426 transitions, 5993 flow. Second operand has 33 states, 33 states have (on average 130.5151515151515) internal successors, (4307), 33 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:04:21,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:04:21,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 432 [2023-08-27 09:04:21,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:04:23,966 INFO L124 PetriNetUnfolderBase]: 3854/6923 cut-off events. [2023-08-27 09:04:23,967 INFO L125 PetriNetUnfolderBase]: For 30763/30846 co-relation queries the response was YES. [2023-08-27 09:04:23,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41104 conditions, 6923 events. 3854/6923 cut-off events. For 30763/30846 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 49423 event pairs, 703 based on Foata normal form. 68/6980 useless extension candidates. Maximal degree in co-relation 41060. Up to 5794 conditions per place. [2023-08-27 09:04:24,018 INFO L140 encePairwiseOnDemand]: 426/432 looper letters, 462 selfloop transitions, 286 changer transitions 4/758 dead transitions. [2023-08-27 09:04:24,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 758 transitions, 11531 flow [2023-08-27 09:04:24,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 09:04:24,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 09:04:24,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3261 transitions. [2023-08-27 09:04:24,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31452546296296297 [2023-08-27 09:04:24,023 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3261 transitions. [2023-08-27 09:04:24,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3261 transitions. [2023-08-27 09:04:24,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:04:24,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3261 transitions. [2023-08-27 09:04:24,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 135.875) internal successors, (3261), 24 states have internal predecessors, (3261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:04:24,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 432.0) internal successors, (10800), 25 states have internal predecessors, (10800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:04:24,036 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 432.0) internal successors, (10800), 25 states have internal predecessors, (10800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:04:24,036 INFO L175 Difference]: Start difference. First operand has 146 places, 426 transitions, 5993 flow. Second operand 24 states and 3261 transitions. [2023-08-27 09:04:24,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 758 transitions, 11531 flow [2023-08-27 09:04:24,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 758 transitions, 11248 flow, removed 99 selfloop flow, removed 10 redundant places. [2023-08-27 09:04:24,234 INFO L231 Difference]: Finished difference. Result has 172 places, 649 transitions, 10483 flow [2023-08-27 09:04:24,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=5782, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=10483, PETRI_PLACES=172, PETRI_TRANSITIONS=649} [2023-08-27 09:04:24,235 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 149 predicate places. [2023-08-27 09:04:24,235 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 649 transitions, 10483 flow [2023-08-27 09:04:24,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 130.5151515151515) internal successors, (4307), 33 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:04:24,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:04:24,236 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:04:24,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 09:04:24,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:04:24,448 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 09:04:24,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:04:24,448 INFO L85 PathProgramCache]: Analyzing trace with hash -824673432, now seen corresponding path program 8 times [2023-08-27 09:04:24,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:04:24,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841464475] [2023-08-27 09:04:24,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:04:24,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:04:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:04:26,866 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:04:26,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:04:26,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841464475] [2023-08-27 09:04:26,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841464475] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:04:26,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536698908] [2023-08-27 09:04:26,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 09:04:26,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:04:26,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:04:26,868 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) [2023-08-27 09:04:26,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 09:04:26,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 09:04:26,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:04:26,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 09:04:26,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:04:27,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:04:27,105 INFO L351 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 14 treesize of output 16 [2023-08-27 09:04:27,302 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:04:27,302 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 107 [2023-08-27 09:04:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:04:27,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:04:27,548 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_568 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_568) c_~f~0.base))) (= (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ (* (select .cse0 (+ (* (select .cse0 (+ (* c_~x1~0 4) c_~f~0.offset)) 4) c_~f~0.offset)) 4) c_~f~0.offset)) 4))) (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ (* (select .cse0 (+ c_~f~0.offset (* 4 (select .cse0 (+ (* c_~x2~0 4) c_~f~0.offset))))) 4) c_~f~0.offset)) 4))) 4)))))) is different from false [2023-08-27 09:04:27,955 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:04:27,955 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 158 treesize of output 558 [2023-08-27 09:04:28,288 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:04:28,289 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 61 treesize of output 408 [2023-08-27 09:04:42,089 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 09:04:42,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536698908] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:04:42,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:04:42,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 28 [2023-08-27 09:04:42,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351579150] [2023-08-27 09:04:42,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:04:42,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 09:04:42,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:04:42,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 09:04:42,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=731, Unknown=1, NotChecked=54, Total=870 [2023-08-27 09:04:42,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 432 [2023-08-27 09:04:42,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 649 transitions, 10483 flow. Second operand has 30 states, 30 states have (on average 130.63333333333333) internal successors, (3919), 30 states have internal predecessors, (3919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:04:42,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:04:42,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 432 [2023-08-27 09:04:42,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:04:46,067 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] [2023-08-27 09:04:48,673 INFO L124 PetriNetUnfolderBase]: 6252/11270 cut-off events. [2023-08-27 09:04:48,673 INFO L125 PetriNetUnfolderBase]: For 70127/70217 co-relation queries the response was YES. [2023-08-27 09:04:48,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72272 conditions, 11270 events. 6252/11270 cut-off events. For 70127/70217 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 87702 event pairs, 1053 based on Foata normal form. 75/11334 useless extension candidates. Maximal degree in co-relation 72214. Up to 9467 conditions per place. [2023-08-27 09:04:48,760 INFO L140 encePairwiseOnDemand]: 423/432 looper letters, 553 selfloop transitions, 563 changer transitions 2/1124 dead transitions. [2023-08-27 09:04:48,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 1124 transitions, 19881 flow [2023-08-27 09:04:48,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-27 09:04:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-27 09:04:48,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4312 transitions. [2023-08-27 09:04:48,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3119212962962963 [2023-08-27 09:04:48,766 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4312 transitions. [2023-08-27 09:04:48,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4312 transitions. [2023-08-27 09:04:48,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:04:48,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4312 transitions. [2023-08-27 09:04:48,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 134.75) internal successors, (4312), 32 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:04:48,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 432.0) internal successors, (14256), 33 states have internal predecessors, (14256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:04:48,782 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 432.0) internal successors, (14256), 33 states have internal predecessors, (14256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:04:48,782 INFO L175 Difference]: Start difference. First operand has 172 places, 649 transitions, 10483 flow. Second operand 32 states and 4312 transitions. [2023-08-27 09:04:48,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 1124 transitions, 19881 flow [2023-08-27 09:04:49,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 1124 transitions, 18958 flow, removed 451 selfloop flow, removed 5 redundant places. [2023-08-27 09:04:49,259 INFO L231 Difference]: Finished difference. Result has 209 places, 1019 transitions, 18464 flow [2023-08-27 09:04:49,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=9966, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=18464, PETRI_PLACES=209, PETRI_TRANSITIONS=1019} [2023-08-27 09:04:49,260 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 186 predicate places. [2023-08-27 09:04:49,260 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 1019 transitions, 18464 flow [2023-08-27 09:04:49,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 130.63333333333333) internal successors, (3919), 30 states have internal predecessors, (3919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:04:49,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:04:49,261 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:04:49,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 09:04:49,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:04:49,467 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 09:04:49,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:04:49,467 INFO L85 PathProgramCache]: Analyzing trace with hash -532487618, now seen corresponding path program 9 times [2023-08-27 09:04:49,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:04:49,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665754634] [2023-08-27 09:04:49,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:04:49,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:04:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:04:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:04:52,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:04:52,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665754634] [2023-08-27 09:04:52,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665754634] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:04:52,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812279628] [2023-08-27 09:04:52,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 09:04:52,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:04:52,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:04:52,287 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) [2023-08-27 09:04:52,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 09:04:52,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 09:04:52,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:04:52,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-27 09:04:52,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:04:52,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:04:52,752 INFO L351 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 20 [2023-08-27 09:04:52,948 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:04:52,948 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 107 [2023-08-27 09:04:53,045 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:04:53,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:04:55,839 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:04:55,839 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 160 treesize of output 552 [2023-08-27 09:04:56,136 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:04:56,137 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 55 treesize of output 328 [2023-08-27 09:05:10,934 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 09:05:10,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812279628] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:05:10,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:05:10,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 28 [2023-08-27 09:05:10,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870927690] [2023-08-27 09:05:10,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:05:10,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 09:05:10,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:05:10,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 09:05:10,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=787, Unknown=7, NotChecked=0, Total=870 [2023-08-27 09:05:10,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 432 [2023-08-27 09:05:10,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 1019 transitions, 18464 flow. Second operand has 30 states, 30 states have (on average 130.63333333333333) internal successors, (3919), 30 states have internal predecessors, (3919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:05:10,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:05:10,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 432 [2023-08-27 09:05:10,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:05:11,693 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| c_~f~0.base))) (let ((.cse8 (select .cse0 4))) (let ((.cse1 (+ c_~f~0.offset (* (select .cse0 (+ (* c_~x1~0 4) c_~f~0.offset)) 4))) (.cse3 (= c_~x1~0 1)) (.cse6 (= .cse8 c_~x2~0)) (.cse7 (select .cse0 0)) (.cse4 (= c_~x1~0 0))) (and (= (select .cse0 (+ c_~f~0.offset (* (select .cse0 .cse1) 4))) c_~x2~0) (= c_~f~0.offset 0) (forall ((v_ArrVal_603 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_603) c_~f~0.base))) (= (select .cse2 (+ (* (select .cse2 (+ c_~f~0.offset (* (select .cse2 (+ (* (select .cse2 (+ c_~f~0.offset (* 4 (select .cse2 (+ (* c_~x2~0 4) c_~f~0.offset))))) 4) c_~f~0.offset)) 4))) 4) c_~f~0.offset)) (select .cse2 (+ (* 4 (select .cse2 (+ (* 4 (select .cse2 .cse1)) c_~f~0.offset))) c_~f~0.offset))))) (let ((.cse5 (= .cse7 1))) (or (and (not .cse3) (or (not .cse4) (not .cse5)) (or (and .cse5 .cse6) (and (= .cse7 0) (= c_~x2~0 0)))) (let ((.cse9 (= c_~x2~0 1))) (and (or (= .cse8 1) (and .cse9 (= .cse8 0))) (or (and .cse9 .cse4) .cse6) .cse5)) (<= (+ c_~x1~0 1) 0))) (or (and .cse3 .cse6) (and (= .cse7 c_~x2~0) .cse4)) (<= c_~size~0 2))))) is different from false [2023-08-27 09:05:12,220 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| c_~f~0.base))) (let ((.cse8 (select .cse1 0))) (let ((.cse9 (select .cse1 4)) (.cse3 (select .cse1 (* .cse8 4)))) (let ((.cse2 (select .cse1 (* (select .cse1 (* .cse3 4)) 4))) (.cse4 (= c_~x1~0 1)) (.cse7 (= .cse9 c_~x2~0)) (.cse5 (= c_~x1~0 0))) (and (= c_~f~0.offset 0) (forall ((v_ArrVal_603 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_603) c_~f~0.base))) (= (select .cse0 (+ (* (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ (* (select .cse0 (+ c_~f~0.offset (* 4 (select .cse0 (+ (* c_~x2~0 4) c_~f~0.offset))))) 4) c_~f~0.offset)) 4))) 4) c_~f~0.offset)) (select .cse0 (+ (* 4 (select .cse0 (+ (* 4 (select .cse0 (+ c_~f~0.offset (* (select .cse1 (+ (* c_~x1~0 4) c_~f~0.offset)) 4)))) c_~f~0.offset))) c_~f~0.offset))))) (= .cse2 c_~x1~0) (= c_~x2~0 (select .cse1 (* .cse2 4))) (= c_~x1~0 .cse3) (let ((.cse6 (= .cse8 1))) (or (and (not .cse4) (or (not .cse5) (not .cse6)) (or (and .cse6 .cse7) (and (= .cse8 0) (= c_~x2~0 0)))) (let ((.cse10 (= c_~x2~0 1))) (and (or (= .cse9 1) (and .cse10 (= .cse9 0))) (or (and .cse10 .cse5) .cse7) .cse6)) (<= (+ c_~x1~0 1) 0))) (or (and .cse4 .cse7) (and (= .cse8 c_~x2~0) .cse5)) (<= c_~size~0 2)))))) is different from false [2023-08-27 09:05:17,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 09:05:19,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 09:05:21,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 09:05:23,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 09:05:26,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 09:05:28,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 09:05:31,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 09:05:34,394 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] [2023-08-27 09:05:36,576 INFO L124 PetriNetUnfolderBase]: 8658/15882 cut-off events. [2023-08-27 09:05:36,576 INFO L125 PetriNetUnfolderBase]: For 150675/150779 co-relation queries the response was YES. [2023-08-27 09:05:36,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118750 conditions, 15882 events. 8658/15882 cut-off events. For 150675/150779 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 133806 event pairs, 1599 based on Foata normal form. 105/15978 useless extension candidates. Maximal degree in co-relation 118680. Up to 13169 conditions per place. [2023-08-27 09:05:36,702 INFO L140 encePairwiseOnDemand]: 421/432 looper letters, 925 selfloop transitions, 681 changer transitions 4/1616 dead transitions. [2023-08-27 09:05:36,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 1616 transitions, 32476 flow [2023-08-27 09:05:36,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-27 09:05:36,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-27 09:05:36,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4198 transitions. [2023-08-27 09:05:36,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31347072879330945 [2023-08-27 09:05:36,708 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4198 transitions. [2023-08-27 09:05:36,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4198 transitions. [2023-08-27 09:05:36,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:05:36,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4198 transitions. [2023-08-27 09:05:36,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 135.41935483870967) internal successors, (4198), 31 states have internal predecessors, (4198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:05:36,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 432.0) internal successors, (13824), 32 states have internal predecessors, (13824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:05:36,723 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 432.0) internal successors, (13824), 32 states have internal predecessors, (13824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:05:36,723 INFO L175 Difference]: Start difference. First operand has 209 places, 1019 transitions, 18464 flow. Second operand 31 states and 4198 transitions. [2023-08-27 09:05:36,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 1616 transitions, 32476 flow [2023-08-27 09:05:37,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 1616 transitions, 31393 flow, removed 531 selfloop flow, removed 5 redundant places. [2023-08-27 09:05:37,982 INFO L231 Difference]: Finished difference. Result has 252 places, 1505 transitions, 30535 flow [2023-08-27 09:05:37,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=17685, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1019, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=30535, PETRI_PLACES=252, PETRI_TRANSITIONS=1505} [2023-08-27 09:05:37,983 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 229 predicate places. [2023-08-27 09:05:37,983 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 1505 transitions, 30535 flow [2023-08-27 09:05:37,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 130.63333333333333) internal successors, (3919), 30 states have internal predecessors, (3919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:05:37,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:05:37,984 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:05:37,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-27 09:05:38,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:05:38,185 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 09:05:38,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:05:38,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1440297316, now seen corresponding path program 10 times [2023-08-27 09:05:38,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:05:38,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42685184] [2023-08-27 09:05:38,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:05:38,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:05:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:05:40,772 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:05:40,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:05:40,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42685184] [2023-08-27 09:05:40,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42685184] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:05:40,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075181227] [2023-08-27 09:05:40,773 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 09:05:40,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:05:40,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:05:40,774 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) [2023-08-27 09:05:40,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 09:05:40,868 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 09:05:40,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:05:40,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-27 09:05:40,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:05:41,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:05:41,099 INFO L351 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 26 treesize of output 24 [2023-08-27 09:05:41,279 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:05:41,279 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 107 [2023-08-27 09:05:41,390 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:05:41,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:05:41,559 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_638 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_638) c_~f~0.base))) (= (select .cse0 (+ (* (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ (* (select .cse0 (+ c_~f~0.offset (* 4 (select .cse0 (+ (* c_~x2~0 4) c_~f~0.offset))))) 4) c_~f~0.offset)) 4))) 4) c_~f~0.offset)) (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ (* c_~x1~0 4) c_~f~0.offset)) 4)))))) is different from false [2023-08-27 09:05:42,312 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:05:42,313 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 162 treesize of output 546 [2023-08-27 09:05:42,504 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:05:42,504 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 49 treesize of output 256 [2023-08-27 09:05:52,298 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 09:05:52,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075181227] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:05:52,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:05:52,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 28 [2023-08-27 09:05:52,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740029776] [2023-08-27 09:05:52,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:05:52,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 09:05:52,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:05:52,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 09:05:52,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=725, Unknown=10, NotChecked=54, Total=870 [2023-08-27 09:05:52,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 432 [2023-08-27 09:05:52,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 1505 transitions, 30535 flow. Second operand has 30 states, 30 states have (on average 130.63333333333333) internal successors, (3919), 30 states have internal predecessors, (3919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:05:52,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:05:52,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 432 [2023-08-27 09:05:52,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:06:01,657 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] [2023-08-27 09:06:03,702 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] [2023-08-27 09:06:10,145 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_int| c_~f~0.base))) (let ((.cse2 (select .cse3 (+ (* c_~x1~0 4) c_~f~0.offset))) (.cse1 (+ (* c_~x2~0 4) c_~f~0.offset))) (and (forall ((v_ArrVal_638 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_638) c_~f~0.base))) (= (select .cse0 (+ (* (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ (* (select .cse0 (+ c_~f~0.offset (* 4 (select .cse0 .cse1)))) 4) c_~f~0.offset)) 4))) 4) c_~f~0.offset)) (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ c_~f~0.offset (* .cse2 4))) 4)))))) (= .cse2 (select .cse3 (+ c_~f~0.offset (* 4 (select .cse3 (+ c_~f~0.offset (* (select .cse3 (+ c_~f~0.offset (* 4 (select .cse3 (+ (* (select .cse3 .cse1) 4) c_~f~0.offset))))) 4)))))))))) is different from false [2023-08-27 09:06:12,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 09:06:14,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 09:06:16,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 09:06:23,550 INFO L124 PetriNetUnfolderBase]: 9447/17359 cut-off events. [2023-08-27 09:06:23,550 INFO L125 PetriNetUnfolderBase]: For 235003/235102 co-relation queries the response was YES. [2023-08-27 09:06:23,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151984 conditions, 17359 events. 9447/17359 cut-off events. For 235003/235102 co-relation queries the response was YES. Maximal size of possible extension queue 1101. Compared 148617 event pairs, 2722 based on Foata normal form. 75/17425 useless extension candidates. Maximal degree in co-relation 151895. Up to 15467 conditions per place. [2023-08-27 09:06:23,745 INFO L140 encePairwiseOnDemand]: 422/432 looper letters, 1343 selfloop transitions, 460 changer transitions 2/1811 dead transitions. [2023-08-27 09:06:23,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 1811 transitions, 40207 flow [2023-08-27 09:06:23,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-27 09:06:23,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-27 09:06:23,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4159 transitions. [2023-08-27 09:06:23,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3105585424133811 [2023-08-27 09:06:23,756 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4159 transitions. [2023-08-27 09:06:23,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4159 transitions. [2023-08-27 09:06:23,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:06:23,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4159 transitions. [2023-08-27 09:06:23,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 134.16129032258064) internal successors, (4159), 31 states have internal predecessors, (4159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:06:23,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 432.0) internal successors, (13824), 32 states have internal predecessors, (13824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:06:23,771 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 432.0) internal successors, (13824), 32 states have internal predecessors, (13824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:06:23,771 INFO L175 Difference]: Start difference. First operand has 252 places, 1505 transitions, 30535 flow. Second operand 31 states and 4159 transitions. [2023-08-27 09:06:23,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 1811 transitions, 40207 flow [2023-08-27 09:06:26,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 1811 transitions, 39127 flow, removed 521 selfloop flow, removed 6 redundant places. [2023-08-27 09:06:26,065 INFO L231 Difference]: Finished difference. Result has 290 places, 1736 transitions, 36497 flow [2023-08-27 09:06:26,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=29723, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=36497, PETRI_PLACES=290, PETRI_TRANSITIONS=1736} [2023-08-27 09:06:26,067 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 267 predicate places. [2023-08-27 09:06:26,067 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 1736 transitions, 36497 flow [2023-08-27 09:06:26,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 130.63333333333333) internal successors, (3919), 30 states have internal predecessors, (3919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:06:26,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:06:26,068 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:06:26,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-08-27 09:06:26,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:06:26,268 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 09:06:26,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:06:26,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1104799498, now seen corresponding path program 11 times [2023-08-27 09:06:26,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:06:26,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577112176] [2023-08-27 09:06:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:06:26,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:06:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:06:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:06:29,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:06:29,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577112176] [2023-08-27 09:06:29,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577112176] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:06:29,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216055875] [2023-08-27 09:06:29,590 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 09:06:29,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:06:29,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:06:29,591 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) [2023-08-27 09:06:29,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 09:06:29,716 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-27 09:06:29,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:06:29,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 69 conjunts are in the unsatisfiable core [2023-08-27 09:06:29,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:06:29,842 INFO L351 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 11 treesize of output 7 [2023-08-27 09:06:29,903 INFO L351 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 6 treesize of output 5 [2023-08-27 09:06:30,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:06:30,249 INFO L351 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 96 treesize of output 72 [2023-08-27 09:06:30,779 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 09:06:30,971 INFO L322 Elim1Store]: treesize reduction 337, result has 9.4 percent of original size [2023-08-27 09:06:30,971 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 159 treesize of output 99 [2023-08-27 09:06:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:06:31,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:06:33,331 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:06:33,331 INFO L351 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 1228 treesize of output 664 [2023-08-27 09:06:34,259 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:06:34,259 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 19 new quantified variables, introduced 55 case distinctions, treesize of input 1820 treesize of output 2108 [2023-08-27 09:06:35,052 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:06:35,052 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 886 treesize of output 942 [2023-08-27 09:06:36,806 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:06:36,807 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 1023 treesize of output 839 Received shutdown request... [2023-08-27 09:09:26,077 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-27 09:09:26,078 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (4 of 5 remaining) [2023-08-27 09:09:26,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 09:09:26,092 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 09:09:26,092 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 09:09:26,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:09:26,283 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 9ms.. [2023-08-27 09:09:26,284 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2023-08-27 09:09:26,284 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2023-08-27 09:09:26,284 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-27 09:09:26,284 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-27 09:09:26,285 INFO L445 BasicCegarLoop]: Path program histogram: [11, 3, 3, 2, 1, 1, 1, 1] [2023-08-27 09:09:26,287 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 09:09:26,287 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 09:09:26,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:09:26 BasicIcfg [2023-08-27 09:09:26,289 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 09:09:26,290 INFO L158 Benchmark]: Toolchain (without parser) took 802534.73ms. Allocated memory was 362.8MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 339.2MB in the beginning and 1.3GB in the end (delta: -977.7MB). Peak memory consumption was 1.9GB. Max. memory is 16.0GB. [2023-08-27 09:09:26,290 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 362.8MB. Free memory is still 339.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:09:26,290 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.18ms. Allocated memory is still 362.8MB. Free memory was 338.7MB in the beginning and 327.5MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 09:09:26,290 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.35ms. Allocated memory is still 362.8MB. Free memory was 327.5MB in the beginning and 325.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:09:26,290 INFO L158 Benchmark]: Boogie Preprocessor took 47.39ms. Allocated memory is still 362.8MB. Free memory was 325.4MB in the beginning and 323.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:09:26,290 INFO L158 Benchmark]: RCFGBuilder took 418.47ms. Allocated memory is still 362.8MB. Free memory was 323.3MB in the beginning and 305.0MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 09:09:26,291 INFO L158 Benchmark]: TraceAbstraction took 801715.23ms. Allocated memory was 362.8MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 304.4MB in the beginning and 1.3GB in the end (delta: -1.0GB). Peak memory consumption was 1.9GB. Max. memory is 16.0GB. [2023-08-27 09:09:26,292 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 362.8MB. Free memory is still 339.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 290.18ms. Allocated memory is still 362.8MB. Free memory was 338.7MB in the beginning and 327.5MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.35ms. Allocated memory is still 362.8MB. Free memory was 327.5MB in the beginning and 325.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 47.39ms. Allocated memory is still 362.8MB. Free memory was 325.4MB in the beginning and 323.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 418.47ms. Allocated memory is still 362.8MB. Free memory was 323.3MB in the beginning and 305.0MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 801715.23ms. Allocated memory was 362.8MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 304.4MB in the beginning and 1.3GB in the end (delta: -1.0GB). Peak memory consumption was 1.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.6s, 181 PlacesBefore, 23 PlacesAfterwards, 191 TransitionsBefore, 19 TransitionsAfterwards, 3892 CoEnabledTransitionPairs, 8 FixpointIterations, 80 TrivialSequentialCompositions, 84 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 31 ConcurrentYvCompositions, 14 ChoiceCompositions, 230 TotalNumberOfCompositions, 3818 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3760, independent: 3749, independent conditional: 0, independent unconditional: 3749, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2305, independent: 2299, independent conditional: 0, independent unconditional: 2299, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3760, independent: 1450, independent conditional: 0, independent unconditional: 1450, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 2305, unknown conditional: 0, unknown unconditional: 2305] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 9ms.. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 9ms.. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 9ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 9ms.. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 9ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 270 locations, 5 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: 801.6s, OverallIterations: 23, TraceHistogramMax: 5, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 99.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.8s, HoareTripleCheckerStatistics: 124 mSolverCounterUnknown, 1637 SdHoareTripleChecker+Valid, 44.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1637 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 43.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1091 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 300 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9499 IncrementalHoareTripleChecker+Invalid, 11014 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 300 mSolverCounterUnsat, 14 mSDtfsCounter, 9499 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 788 GetRequests, 352 SyntacticMatches, 16 SemanticMatches, 420 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 2800 ImplicationChecksByTransitivity, 46.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36497occurred in iteration=22, InterpolantAutomatonStates: 301, 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: 0.2s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 509.5s InterpolantComputationTime, 633 NumberOfCodeBlocks, 629 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 824 ConstructedInterpolants, 25 QuantifiedInterpolants, 27886 SizeOfPredicates, 133 NumberOfNonLiveVariables, 3242 ConjunctsInSsa, 414 ConjunctsInUnsatCore, 52 InterpolantComputations, 10 PerfectInterpolantSequences, 73/498 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