/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/popl20-bad-counter-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 07:12:38,166 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 07:12:38,224 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 07:12:38,231 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 07:12:38,232 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 07:12:38,254 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 07:12:38,255 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 07:12:38,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 07:12:38,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 07:12:38,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 07:12:38,259 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 07:12:38,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 07:12:38,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 07:12:38,260 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 07:12:38,261 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 07:12:38,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 07:12:38,261 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 07:12:38,261 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 07:12:38,261 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 07:12:38,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 07:12:38,261 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 07:12:38,262 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 07:12:38,262 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 07:12:38,263 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 07:12:38,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 07:12:38,263 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 07:12:38,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 07:12:38,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:12:38,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 07:12:38,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 07:12:38,264 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 07:12:38,264 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 07:12:38,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 07:12:38,265 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 07:12:38,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 07:12:38,265 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 07:12:38,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 07:12:38,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 07:12:38,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 07:12:38,538 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 07:12:38,538 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 07:12:38,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-counter-queue.wvr.c [2023-08-27 07:12:39,568 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 07:12:39,778 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 07:12:39,779 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-counter-queue.wvr.c [2023-08-27 07:12:39,783 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef92bb038/27bbbb676fe44230af5577c05d2720bd/FLAG5e6e529ae [2023-08-27 07:12:39,796 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef92bb038/27bbbb676fe44230af5577c05d2720bd [2023-08-27 07:12:39,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 07:12:39,798 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 07:12:39,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 07:12:39,799 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 07:12:39,802 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 07:12:39,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:39,803 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@491fb409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39, skipping insertion in model container [2023-08-27 07:12:39,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:39,834 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 07:12:39,953 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:12:39,959 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 07:12:39,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:12:39,977 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:12:39,978 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:12:39,982 INFO L206 MainTranslator]: Completed translation [2023-08-27 07:12:39,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39 WrapperNode [2023-08-27 07:12:39,982 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 07:12:39,983 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 07:12:39,983 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 07:12:39,983 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 07:12:39,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:39,992 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:40,008 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 185 [2023-08-27 07:12:40,008 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 07:12:40,009 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 07:12:40,009 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 07:12:40,009 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 07:12:40,018 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:40,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:40,026 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:40,027 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:40,036 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:40,038 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:40,039 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:40,039 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:40,041 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 07:12:40,041 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 07:12:40,041 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 07:12:40,042 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 07:12:40,042 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:40,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:12:40,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:12:40,078 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 07:12:40,110 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 07:12:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 07:12:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 07:12:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 07:12:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 07:12:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 07:12:40,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 07:12:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 07:12:40,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 07:12:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 07:12:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 07:12:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 07:12:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 07:12:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 07:12:40,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 07:12:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 07:12:40,127 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 07:12:40,216 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 07:12:40,222 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 07:12:40,463 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 07:12:40,656 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 07:12:40,656 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-27 07:12:40,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:12:40 BoogieIcfgContainer [2023-08-27 07:12:40,660 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 07:12:40,663 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 07:12:40,663 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 07:12:40,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 07:12:40,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:12:39" (1/3) ... [2023-08-27 07:12:40,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e5cd71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:12:40, skipping insertion in model container [2023-08-27 07:12:40,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (2/3) ... [2023-08-27 07:12:40,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e5cd71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:12:40, skipping insertion in model container [2023-08-27 07:12:40,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:12:40" (3/3) ... [2023-08-27 07:12:40,667 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2023-08-27 07:12:40,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 07:12:40,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-08-27 07:12:40,679 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 07:12:40,774 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 07:12:40,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 139 transitions, 294 flow [2023-08-27 07:12:40,880 INFO L124 PetriNetUnfolderBase]: 9/137 cut-off events. [2023-08-27 07:12:40,881 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 07:12:40,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 137 events. 9/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 194 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-27 07:12:40,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 139 transitions, 294 flow [2023-08-27 07:12:40,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 128 transitions, 268 flow [2023-08-27 07:12:40,893 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 07:12:40,898 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 128 transitions, 268 flow [2023-08-27 07:12:40,900 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 128 transitions, 268 flow [2023-08-27 07:12:40,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 128 transitions, 268 flow [2023-08-27 07:12:40,920 INFO L124 PetriNetUnfolderBase]: 9/128 cut-off events. [2023-08-27 07:12:40,920 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 07:12:40,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 128 events. 9/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 196 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-27 07:12:40,921 INFO L119 LiptonReduction]: Number of co-enabled transitions 1628 [2023-08-27 07:12:45,706 INFO L134 LiptonReduction]: Checked pairs total: 3190 [2023-08-27 07:12:45,707 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-08-27 07:12:45,716 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 07:12:45,720 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;@1db5b62, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 07:12:45,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-08-27 07:12:45,722 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 07:12:45,722 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 07:12:45,722 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 07:12:45,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:45,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 07:12:45,723 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:45,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:45,726 INFO L85 PathProgramCache]: Analyzing trace with hash 23692, now seen corresponding path program 1 times [2023-08-27 07:12:45,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:45,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693461262] [2023-08-27 07:12:45,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:45,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:45,880 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 07:12:45,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:45,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693461262] [2023-08-27 07:12:45,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693461262] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:12:45,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:12:45,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:12:45,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649836387] [2023-08-27 07:12:45,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:12:45,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:12:45,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:45,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:12:45,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:12:45,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 266 [2023-08-27 07:12:45,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:12:45,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:45,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 266 [2023-08-27 07:12:45,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:46,064 INFO L124 PetriNetUnfolderBase]: 505/750 cut-off events. [2023-08-27 07:12:46,064 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-27 07:12:46,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 750 events. 505/750 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 3454 event pairs, 280 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 1398. Up to 740 conditions per place. [2023-08-27 07:12:46,073 INFO L140 encePairwiseOnDemand]: 259/266 looper letters, 28 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-08-27 07:12:46,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 136 flow [2023-08-27 07:12:46,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:12:46,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:12:46,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2023-08-27 07:12:46,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423558897243108 [2023-08-27 07:12:46,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2023-08-27 07:12:46,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2023-08-27 07:12:46,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:46,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2023-08-27 07:12:46,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 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 07:12:46,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 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 07:12:46,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 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 07:12:46,104 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 86 flow. Second operand 3 states and 353 transitions. [2023-08-27 07:12:46,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 136 flow [2023-08-27 07:12:46,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 07:12:46,109 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 72 flow [2023-08-27 07:12:46,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-27 07:12:46,113 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -7 predicate places. [2023-08-27 07:12:46,113 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 72 flow [2023-08-27 07:12:46,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:12:46,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:46,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 07:12:46,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 07:12:46,114 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:46,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:46,115 INFO L85 PathProgramCache]: Analyzing trace with hash 23705, now seen corresponding path program 1 times [2023-08-27 07:12:46,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:46,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188327116] [2023-08-27 07:12:46,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:46,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:46,199 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 07:12:46,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:46,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188327116] [2023-08-27 07:12:46,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188327116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:12:46,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:12:46,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:12:46,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821636368] [2023-08-27 07:12:46,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:12:46,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:12:46,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:46,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:12:46,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:12:46,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 266 [2023-08-27 07:12:46,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:12:46,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:46,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 266 [2023-08-27 07:12:46,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:46,289 INFO L124 PetriNetUnfolderBase]: 506/752 cut-off events. [2023-08-27 07:12:46,290 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 07:12:46,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1513 conditions, 752 events. 506/752 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 3468 event pairs, 280 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 1495. Up to 744 conditions per place. [2023-08-27 07:12:46,293 INFO L140 encePairwiseOnDemand]: 262/266 looper letters, 29 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-08-27 07:12:46,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 142 flow [2023-08-27 07:12:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:12:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:12:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-08-27 07:12:46,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398496240601504 [2023-08-27 07:12:46,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-08-27 07:12:46,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-08-27 07:12:46,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:46,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-08-27 07:12:46,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 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 07:12:46,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 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 07:12:46,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 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 07:12:46,300 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 72 flow. Second operand 3 states and 351 transitions. [2023-08-27 07:12:46,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 142 flow [2023-08-27 07:12:46,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:12:46,301 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 87 flow [2023-08-27 07:12:46,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-08-27 07:12:46,302 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -6 predicate places. [2023-08-27 07:12:46,302 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 87 flow [2023-08-27 07:12:46,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:12:46,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:46,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 07:12:46,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 07:12:46,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:46,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:46,310 INFO L85 PathProgramCache]: Analyzing trace with hash 735589, now seen corresponding path program 1 times [2023-08-27 07:12:46,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:46,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99275004] [2023-08-27 07:12:46,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:46,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:46,389 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 07:12:46,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:46,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99275004] [2023-08-27 07:12:46,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99275004] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:12:46,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287526341] [2023-08-27 07:12:46,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:46,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:46,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:12:46,392 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 07:12:46,438 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 07:12:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:46,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:12:46,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:12:46,549 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 07:12:46,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:12:46,574 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 07:12:46,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287526341] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:12:46,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:12:46,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-27 07:12:46,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943129836] [2023-08-27 07:12:46,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:12:46,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 07:12:46,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:46,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 07:12:46,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 07:12:46,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 266 [2023-08-27 07:12:46,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 87 flow. Second operand has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 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 07:12:46,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:46,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 266 [2023-08-27 07:12:46,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:46,691 INFO L124 PetriNetUnfolderBase]: 509/758 cut-off events. [2023-08-27 07:12:46,691 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 07:12:46,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 758 events. 509/758 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 3512 event pairs, 280 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 1495. Up to 747 conditions per place. [2023-08-27 07:12:46,695 INFO L140 encePairwiseOnDemand]: 262/266 looper letters, 29 selfloop transitions, 9 changer transitions 0/40 dead transitions. [2023-08-27 07:12:46,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 40 transitions, 187 flow [2023-08-27 07:12:46,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 07:12:46,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 07:12:46,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 677 transitions. [2023-08-27 07:12:46,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4241854636591479 [2023-08-27 07:12:46,697 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 677 transitions. [2023-08-27 07:12:46,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 677 transitions. [2023-08-27 07:12:46,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:46,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 677 transitions. [2023-08-27 07:12:46,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.83333333333333) internal successors, (677), 6 states have internal predecessors, (677), 0 states have call successors, (0), 0 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 07:12:46,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 266.0) internal successors, (1862), 7 states have internal predecessors, (1862), 0 states have call successors, (0), 0 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 07:12:46,701 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 266.0) internal successors, (1862), 7 states have internal predecessors, (1862), 0 states have call successors, (0), 0 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 07:12:46,701 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 87 flow. Second operand 6 states and 677 transitions. [2023-08-27 07:12:46,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 40 transitions, 187 flow [2023-08-27 07:12:46,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 182 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 07:12:46,703 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 143 flow [2023-08-27 07:12:46,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=143, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2023-08-27 07:12:46,704 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-08-27 07:12:46,704 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 143 flow [2023-08-27 07:12:46,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 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 07:12:46,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:46,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 07:12:46,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 07:12:46,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:46,912 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:46,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:46,912 INFO L85 PathProgramCache]: Analyzing trace with hash 706712568, now seen corresponding path program 1 times [2023-08-27 07:12:46,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:46,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107931637] [2023-08-27 07:12:46,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:46,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:47,026 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 07:12:47,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:47,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107931637] [2023-08-27 07:12:47,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107931637] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:12:47,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:12:47,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 07:12:47,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289422480] [2023-08-27 07:12:47,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:12:47,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:12:47,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:47,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:12:47,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:12:47,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 07:12:47,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 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 07:12:47,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:47,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 07:12:47,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:47,213 INFO L124 PetriNetUnfolderBase]: 519/857 cut-off events. [2023-08-27 07:12:47,213 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 07:12:47,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1757 conditions, 857 events. 519/857 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 4329 event pairs, 305 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 1721. Up to 638 conditions per place. [2023-08-27 07:12:47,217 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 65 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2023-08-27 07:12:47,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 350 flow [2023-08-27 07:12:47,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:12:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:12:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 524 transitions. [2023-08-27 07:12:47,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39398496240601505 [2023-08-27 07:12:47,219 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 524 transitions. [2023-08-27 07:12:47,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 524 transitions. [2023-08-27 07:12:47,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:47,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 524 transitions. [2023-08-27 07:12:47,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 07:12:47,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 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 07:12:47,223 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 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 07:12:47,223 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 143 flow. Second operand 5 states and 524 transitions. [2023-08-27 07:12:47,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 350 flow [2023-08-27 07:12:47,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 329 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 07:12:47,232 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 155 flow [2023-08-27 07:12:47,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-08-27 07:12:47,233 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2023-08-27 07:12:47,233 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 155 flow [2023-08-27 07:12:47,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 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 07:12:47,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:47,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 07:12:47,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 07:12:47,234 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:47,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:47,234 INFO L85 PathProgramCache]: Analyzing trace with hash 439612329, now seen corresponding path program 1 times [2023-08-27 07:12:47,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:47,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898252017] [2023-08-27 07:12:47,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:47,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:47,404 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 07:12:47,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:47,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898252017] [2023-08-27 07:12:47,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898252017] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:12:47,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408720792] [2023-08-27 07:12:47,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:47,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:47,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:12:47,421 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 07:12:47,444 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 07:12:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:47,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 07:12:47,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:12:47,558 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 07:12:47,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:12:47,584 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 07:12:47,602 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 07:12:47,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:12:47,630 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_88 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_88) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296)) is different from false [2023-08-27 07:12:47,656 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:47,657 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 22 treesize of output 23 [2023-08-27 07:12:47,667 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:47,667 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-08-27 07:12:47,686 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-08-27 07:12:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 07:12:47,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408720792] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:12:47,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:12:47,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-27 07:12:47,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754045160] [2023-08-27 07:12:47,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:12:47,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 07:12:47,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:47,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 07:12:47,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=102, Unknown=1, NotChecked=20, Total=156 [2023-08-27 07:12:47,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 07:12:47,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 155 flow. Second operand has 13 states, 13 states have (on average 87.3076923076923) internal successors, (1135), 13 states have internal predecessors, (1135), 0 states have call successors, (0), 0 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 07:12:47,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:47,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 07:12:47,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:48,051 INFO L124 PetriNetUnfolderBase]: 713/1182 cut-off events. [2023-08-27 07:12:48,051 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2023-08-27 07:12:48,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2646 conditions, 1182 events. 713/1182 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 6823 event pairs, 243 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 2612. Up to 778 conditions per place. [2023-08-27 07:12:48,057 INFO L140 encePairwiseOnDemand]: 252/266 looper letters, 52 selfloop transitions, 23 changer transitions 0/76 dead transitions. [2023-08-27 07:12:48,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 76 transitions, 399 flow [2023-08-27 07:12:48,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 07:12:48,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 07:12:48,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 758 transitions. [2023-08-27 07:12:48,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35620300751879697 [2023-08-27 07:12:48,060 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 758 transitions. [2023-08-27 07:12:48,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 758 transitions. [2023-08-27 07:12:48,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:48,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 758 transitions. [2023-08-27 07:12:48,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 94.75) internal successors, (758), 8 states have internal predecessors, (758), 0 states have call successors, (0), 0 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 07:12:48,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 266.0) internal successors, (2394), 9 states have internal predecessors, (2394), 0 states have call successors, (0), 0 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 07:12:48,064 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 266.0) internal successors, (2394), 9 states have internal predecessors, (2394), 0 states have call successors, (0), 0 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 07:12:48,064 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 155 flow. Second operand 8 states and 758 transitions. [2023-08-27 07:12:48,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 76 transitions, 399 flow [2023-08-27 07:12:48,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 394 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:12:48,068 INFO L231 Difference]: Finished difference. Result has 54 places, 58 transitions, 287 flow [2023-08-27 07:12:48,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=287, PETRI_PLACES=54, PETRI_TRANSITIONS=58} [2023-08-27 07:12:48,070 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2023-08-27 07:12:48,070 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 58 transitions, 287 flow [2023-08-27 07:12:48,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 87.3076923076923) internal successors, (1135), 13 states have internal predecessors, (1135), 0 states have call successors, (0), 0 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 07:12:48,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:48,071 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 07:12:48,087 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 07:12:48,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:48,277 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:48,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:48,277 INFO L85 PathProgramCache]: Analyzing trace with hash 439824281, now seen corresponding path program 2 times [2023-08-27 07:12:48,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:48,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699429269] [2023-08-27 07:12:48,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:48,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:48,338 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 07:12:48,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:48,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699429269] [2023-08-27 07:12:48,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699429269] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:12:48,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247482838] [2023-08-27 07:12:48,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:12:48,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:48,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:12:48,341 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 07:12:48,343 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 07:12:48,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 07:12:48,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:12:48,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 07:12:48,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:12:48,415 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 07:12:48,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:12:48,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247482838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:12:48,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:12:48,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 07:12:48,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312318144] [2023-08-27 07:12:48,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:12:48,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:12:48,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:48,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:12:48,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 07:12:48,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 266 [2023-08-27 07:12:48,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 58 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 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 07:12:48,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:48,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 266 [2023-08-27 07:12:48,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:48,518 INFO L124 PetriNetUnfolderBase]: 745/1192 cut-off events. [2023-08-27 07:12:48,518 INFO L125 PetriNetUnfolderBase]: For 379/417 co-relation queries the response was YES. [2023-08-27 07:12:48,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3131 conditions, 1192 events. 745/1192 cut-off events. For 379/417 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 6701 event pairs, 394 based on Foata normal form. 39/592 useless extension candidates. Maximal degree in co-relation 3099. Up to 1176 conditions per place. [2023-08-27 07:12:48,524 INFO L140 encePairwiseOnDemand]: 264/266 looper letters, 52 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-08-27 07:12:48,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 383 flow [2023-08-27 07:12:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:12:48,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:12:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-08-27 07:12:48,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398496240601504 [2023-08-27 07:12:48,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-08-27 07:12:48,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-08-27 07:12:48,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:48,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-08-27 07:12:48,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 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 07:12:48,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 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 07:12:48,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 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 07:12:48,528 INFO L175 Difference]: Start difference. First operand has 54 places, 58 transitions, 287 flow. Second operand 3 states and 351 transitions. [2023-08-27 07:12:48,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 383 flow [2023-08-27 07:12:48,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 352 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-27 07:12:48,530 INFO L231 Difference]: Finished difference. Result has 50 places, 57 transitions, 248 flow [2023-08-27 07:12:48,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=50, PETRI_TRANSITIONS=57} [2023-08-27 07:12:48,531 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2023-08-27 07:12:48,531 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 57 transitions, 248 flow [2023-08-27 07:12:48,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 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 07:12:48,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:48,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 07:12:48,556 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 07:12:48,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:48,736 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:48,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:48,736 INFO L85 PathProgramCache]: Analyzing trace with hash 439612332, now seen corresponding path program 1 times [2023-08-27 07:12:48,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:48,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911995825] [2023-08-27 07:12:48,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:48,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:48,771 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 07:12:48,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:48,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911995825] [2023-08-27 07:12:48,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911995825] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:12:48,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:12:48,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:12:48,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236549844] [2023-08-27 07:12:48,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:12:48,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:12:48,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:48,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:12:48,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:12:48,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 266 [2023-08-27 07:12:48,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 57 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 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 07:12:48,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:48,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 266 [2023-08-27 07:12:48,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:48,910 INFO L124 PetriNetUnfolderBase]: 872/1446 cut-off events. [2023-08-27 07:12:48,911 INFO L125 PetriNetUnfolderBase]: For 383/439 co-relation queries the response was YES. [2023-08-27 07:12:48,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3576 conditions, 1446 events. 872/1446 cut-off events. For 383/439 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 8466 event pairs, 133 based on Foata normal form. 58/790 useless extension candidates. Maximal degree in co-relation 3563. Up to 1176 conditions per place. [2023-08-27 07:12:48,916 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 63 selfloop transitions, 9 changer transitions 1/77 dead transitions. [2023-08-27 07:12:48,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 464 flow [2023-08-27 07:12:48,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:12:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:12:48,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2023-08-27 07:12:48,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48120300751879697 [2023-08-27 07:12:48,917 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2023-08-27 07:12:48,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2023-08-27 07:12:48,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:48,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2023-08-27 07:12:48,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:12:48,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 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 07:12:48,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 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 07:12:48,920 INFO L175 Difference]: Start difference. First operand has 50 places, 57 transitions, 248 flow. Second operand 3 states and 384 transitions. [2023-08-27 07:12:48,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 464 flow [2023-08-27 07:12:48,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 77 transitions, 463 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:12:48,922 INFO L231 Difference]: Finished difference. Result has 52 places, 62 transitions, 312 flow [2023-08-27 07:12:48,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=52, PETRI_TRANSITIONS=62} [2023-08-27 07:12:48,923 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2023-08-27 07:12:48,923 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 62 transitions, 312 flow [2023-08-27 07:12:48,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 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 07:12:48,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:48,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 07:12:48,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 07:12:48,924 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:48,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:48,924 INFO L85 PathProgramCache]: Analyzing trace with hash 439612335, now seen corresponding path program 1 times [2023-08-27 07:12:48,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:48,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982468852] [2023-08-27 07:12:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:48,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:49,053 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 07:12:49,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:49,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982468852] [2023-08-27 07:12:49,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982468852] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:12:49,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625522090] [2023-08-27 07:12:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:49,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:49,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:12:49,070 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 07:12:49,072 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 07:12:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:49,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 07:12:49,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:12:49,160 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 07:12:49,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:12:49,185 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 16 treesize of output 18 [2023-08-27 07:12:49,194 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 07:12:49,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:12:49,236 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:49,237 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 24 treesize of output 25 [2023-08-27 07:12:49,243 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:49,243 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-08-27 07:12:49,246 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-08-27 07:12:49,263 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 07:12:49,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625522090] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:12:49,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:12:49,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-27 07:12:49,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511617859] [2023-08-27 07:12:49,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:12:49,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 07:12:49,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:49,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 07:12:49,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=100, Unknown=1, NotChecked=0, Total=132 [2023-08-27 07:12:49,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 07:12:49,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 62 transitions, 312 flow. Second operand has 12 states, 12 states have (on average 87.25) internal successors, (1047), 12 states have internal predecessors, (1047), 0 states have call successors, (0), 0 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 07:12:49,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:49,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 07:12:49,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:49,527 INFO L124 PetriNetUnfolderBase]: 945/1556 cut-off events. [2023-08-27 07:12:49,527 INFO L125 PetriNetUnfolderBase]: For 808/808 co-relation queries the response was YES. [2023-08-27 07:12:49,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4623 conditions, 1556 events. 945/1556 cut-off events. For 808/808 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 8989 event pairs, 314 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 4608. Up to 1069 conditions per place. [2023-08-27 07:12:49,534 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 59 selfloop transitions, 26 changer transitions 0/86 dead transitions. [2023-08-27 07:12:49,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 86 transitions, 588 flow [2023-08-27 07:12:49,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 07:12:49,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 07:12:49,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 752 transitions. [2023-08-27 07:12:49,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3533834586466165 [2023-08-27 07:12:49,537 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 752 transitions. [2023-08-27 07:12:49,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 752 transitions. [2023-08-27 07:12:49,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:49,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 752 transitions. [2023-08-27 07:12:49,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 94.0) internal successors, (752), 8 states have internal predecessors, (752), 0 states have call successors, (0), 0 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 07:12:49,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 266.0) internal successors, (2394), 9 states have internal predecessors, (2394), 0 states have call successors, (0), 0 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 07:12:49,543 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 266.0) internal successors, (2394), 9 states have internal predecessors, (2394), 0 states have call successors, (0), 0 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 07:12:49,543 INFO L175 Difference]: Start difference. First operand has 52 places, 62 transitions, 312 flow. Second operand 8 states and 752 transitions. [2023-08-27 07:12:49,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 86 transitions, 588 flow [2023-08-27 07:12:49,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 86 transitions, 574 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:12:49,548 INFO L231 Difference]: Finished difference. Result has 58 places, 64 transitions, 366 flow [2023-08-27 07:12:49,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=366, PETRI_PLACES=58, PETRI_TRANSITIONS=64} [2023-08-27 07:12:49,549 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2023-08-27 07:12:49,549 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 64 transitions, 366 flow [2023-08-27 07:12:49,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 87.25) internal successors, (1047), 12 states have internal predecessors, (1047), 0 states have call successors, (0), 0 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 07:12:49,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:49,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:12:49,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 07:12:49,755 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 07:12:49,755 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:49,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:49,756 INFO L85 PathProgramCache]: Analyzing trace with hash 550583461, now seen corresponding path program 1 times [2023-08-27 07:12:49,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:49,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93129218] [2023-08-27 07:12:49,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:49,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:49,812 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 07:12:49,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:49,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93129218] [2023-08-27 07:12:49,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93129218] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:12:49,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:12:49,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 07:12:49,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038101110] [2023-08-27 07:12:49,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:12:49,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:12:49,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:49,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:12:49,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:12:49,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 07:12:49,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 64 transitions, 366 flow. Second operand has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 0 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 07:12:49,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:49,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 07:12:49,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:49,973 INFO L124 PetriNetUnfolderBase]: 788/1300 cut-off events. [2023-08-27 07:12:49,973 INFO L125 PetriNetUnfolderBase]: For 1780/1804 co-relation queries the response was YES. [2023-08-27 07:12:49,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4245 conditions, 1300 events. 788/1300 cut-off events. For 1780/1804 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 6976 event pairs, 399 based on Foata normal form. 24/927 useless extension candidates. Maximal degree in co-relation 4229. Up to 1258 conditions per place. [2023-08-27 07:12:49,979 INFO L140 encePairwiseOnDemand]: 258/266 looper letters, 56 selfloop transitions, 2 changer transitions 16/76 dead transitions. [2023-08-27 07:12:49,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 545 flow [2023-08-27 07:12:49,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:12:49,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:12:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 504 transitions. [2023-08-27 07:12:49,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37894736842105264 [2023-08-27 07:12:49,981 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 504 transitions. [2023-08-27 07:12:49,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 504 transitions. [2023-08-27 07:12:49,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:49,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 504 transitions. [2023-08-27 07:12:49,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 0 states have call successors, (0), 0 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 07:12:49,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 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 07:12:49,985 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 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 07:12:49,985 INFO L175 Difference]: Start difference. First operand has 58 places, 64 transitions, 366 flow. Second operand 5 states and 504 transitions. [2023-08-27 07:12:49,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 545 flow [2023-08-27 07:12:49,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 533 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 07:12:49,989 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 344 flow [2023-08-27 07:12:49,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=344, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2023-08-27 07:12:49,990 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2023-08-27 07:12:49,991 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 344 flow [2023-08-27 07:12:49,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 0 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 07:12:49,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:49,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:12:49,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 07:12:49,991 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:49,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:49,992 INFO L85 PathProgramCache]: Analyzing trace with hash 743228662, now seen corresponding path program 1 times [2023-08-27 07:12:49,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:49,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767419060] [2023-08-27 07:12:49,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:49,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:50,168 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 07:12:50,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:50,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767419060] [2023-08-27 07:12:50,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767419060] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:12:50,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930399203] [2023-08-27 07:12:50,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:50,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:50,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:12:50,169 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 07:12:50,189 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 07:12:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:50,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 07:12:50,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:12:50,284 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 07:12:50,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:12:50,307 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 07:12:50,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:12:50,326 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 07:12:50,331 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 07:12:50,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:12:50,385 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:50,386 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 25 treesize of output 26 [2023-08-27 07:12:50,391 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:50,392 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 117 [2023-08-27 07:12:50,396 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-08-27 07:12:50,413 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-08-27 07:12:50,427 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 07:12:50,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930399203] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:12:50,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:12:50,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-27 07:12:50,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580332973] [2023-08-27 07:12:50,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:12:50,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 07:12:50,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:50,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 07:12:50,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=160, Unknown=6, NotChecked=0, Total=210 [2023-08-27 07:12:50,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 07:12:50,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 344 flow. Second operand has 15 states, 15 states have (on average 84.26666666666667) internal successors, (1264), 15 states have internal predecessors, (1264), 0 states have call successors, (0), 0 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 07:12:50,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:50,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 07:12:50,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:50,666 INFO L124 PetriNetUnfolderBase]: 904/1487 cut-off events. [2023-08-27 07:12:50,666 INFO L125 PetriNetUnfolderBase]: For 1384/1384 co-relation queries the response was YES. [2023-08-27 07:12:50,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4962 conditions, 1487 events. 904/1487 cut-off events. For 1384/1384 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 8804 event pairs, 202 based on Foata normal form. 87/1024 useless extension candidates. Maximal degree in co-relation 4943. Up to 624 conditions per place. [2023-08-27 07:12:50,673 INFO L140 encePairwiseOnDemand]: 253/266 looper letters, 63 selfloop transitions, 26 changer transitions 0/90 dead transitions. [2023-08-27 07:12:50,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 90 transitions, 658 flow [2023-08-27 07:12:50,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 07:12:50,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 07:12:50,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 645 transitions. [2023-08-27 07:12:50,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3464017185821697 [2023-08-27 07:12:50,675 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 645 transitions. [2023-08-27 07:12:50,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 645 transitions. [2023-08-27 07:12:50,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:50,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 645 transitions. [2023-08-27 07:12:50,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.14285714285714) internal successors, (645), 7 states have internal predecessors, (645), 0 states have call successors, (0), 0 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 07:12:50,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 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 07:12:50,679 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 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 07:12:50,679 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 344 flow. Second operand 7 states and 645 transitions. [2023-08-27 07:12:50,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 90 transitions, 658 flow [2023-08-27 07:12:50,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 90 transitions, 594 flow, removed 30 selfloop flow, removed 6 redundant places. [2023-08-27 07:12:50,684 INFO L231 Difference]: Finished difference. Result has 59 places, 65 transitions, 439 flow [2023-08-27 07:12:50,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=439, PETRI_PLACES=59, PETRI_TRANSITIONS=65} [2023-08-27 07:12:50,684 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2023-08-27 07:12:50,684 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 65 transitions, 439 flow [2023-08-27 07:12:50,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 84.26666666666667) internal successors, (1264), 15 states have internal predecessors, (1264), 0 states have call successors, (0), 0 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 07:12:50,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:50,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:12:50,691 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 07:12:50,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-27 07:12:50,890 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:50,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:50,890 INFO L85 PathProgramCache]: Analyzing trace with hash 743228668, now seen corresponding path program 1 times [2023-08-27 07:12:50,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:50,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659565373] [2023-08-27 07:12:50,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:50,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:51,084 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 07:12:51,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:51,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659565373] [2023-08-27 07:12:51,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659565373] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:12:51,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381185687] [2023-08-27 07:12:51,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:51,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:51,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:12:51,086 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 07:12:51,088 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 07:12:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:51,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 07:12:51,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:12:51,174 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 07:12:51,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:12:51,196 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 16 treesize of output 18 [2023-08-27 07:12:51,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:12:51,215 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 16 treesize of output 18 [2023-08-27 07:12:51,220 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 07:12:51,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:12:51,239 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_249 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_249) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2023-08-27 07:12:51,262 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:51,262 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 27 treesize of output 28 [2023-08-27 07:12:51,267 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:51,267 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 135 [2023-08-27 07:12:51,271 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-27 07:12:51,275 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-08-27 07:12:51,296 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 07:12:51,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381185687] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:12:51,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:12:51,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-27 07:12:51,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600790557] [2023-08-27 07:12:51,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:12:51,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 07:12:51,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:51,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 07:12:51,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=142, Unknown=2, NotChecked=24, Total=210 [2023-08-27 07:12:51,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 07:12:51,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 65 transitions, 439 flow. Second operand has 15 states, 15 states have (on average 84.26666666666667) internal successors, (1264), 15 states have internal predecessors, (1264), 0 states have call successors, (0), 0 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 07:12:51,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:51,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 07:12:51,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:51,545 INFO L124 PetriNetUnfolderBase]: 857/1411 cut-off events. [2023-08-27 07:12:51,545 INFO L125 PetriNetUnfolderBase]: For 2268/2268 co-relation queries the response was YES. [2023-08-27 07:12:51,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4763 conditions, 1411 events. 857/1411 cut-off events. For 2268/2268 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 8074 event pairs, 264 based on Foata normal form. 29/912 useless extension candidates. Maximal degree in co-relation 4746. Up to 624 conditions per place. [2023-08-27 07:12:51,551 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 62 selfloop transitions, 26 changer transitions 0/89 dead transitions. [2023-08-27 07:12:51,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 89 transitions, 687 flow [2023-08-27 07:12:51,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 07:12:51,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 07:12:51,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 642 transitions. [2023-08-27 07:12:51,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3447905477980666 [2023-08-27 07:12:51,553 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 642 transitions. [2023-08-27 07:12:51,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 642 transitions. [2023-08-27 07:12:51,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:51,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 642 transitions. [2023-08-27 07:12:51,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.71428571428571) internal successors, (642), 7 states have internal predecessors, (642), 0 states have call successors, (0), 0 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 07:12:51,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 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 07:12:51,556 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 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 07:12:51,556 INFO L175 Difference]: Start difference. First operand has 59 places, 65 transitions, 439 flow. Second operand 7 states and 642 transitions. [2023-08-27 07:12:51,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 89 transitions, 687 flow [2023-08-27 07:12:51,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 89 transitions, 679 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 07:12:51,560 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 477 flow [2023-08-27 07:12:51,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=477, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2023-08-27 07:12:51,560 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2023-08-27 07:12:51,560 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 477 flow [2023-08-27 07:12:51,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 84.26666666666667) internal successors, (1264), 15 states have internal predecessors, (1264), 0 states have call successors, (0), 0 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 07:12:51,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:51,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:12:51,567 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 07:12:51,765 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 07:12:51,765 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:51,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:51,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1565294425, now seen corresponding path program 1 times [2023-08-27 07:12:51,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:51,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301019886] [2023-08-27 07:12:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:51,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:51,906 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 07:12:51,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:51,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301019886] [2023-08-27 07:12:51,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301019886] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:12:51,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996081199] [2023-08-27 07:12:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:51,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:51,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:12:51,907 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 07:12:51,937 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 07:12:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:51,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 07:12:51,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:12:52,004 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 07:12:52,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:12:52,023 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 07:12:52,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:12:52,040 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 07:12:52,048 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 07:12:52,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:12:52,067 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_283 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_283) c_~A~0.base) c_~A~0.offset) 9223372039002259456)) is different from false [2023-08-27 07:12:52,128 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:52,129 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 25 treesize of output 26 [2023-08-27 07:12:52,135 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:52,136 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 59 [2023-08-27 07:12:52,140 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2023-08-27 07:12:52,142 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2023-08-27 07:12:52,181 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 07:12:52,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996081199] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:12:52,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:12:52,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-27 07:12:52,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318727668] [2023-08-27 07:12:52,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:12:52,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 07:12:52,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:52,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 07:12:52,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=142, Unknown=2, NotChecked=24, Total=210 [2023-08-27 07:12:52,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 07:12:52,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 477 flow. Second operand has 15 states, 15 states have (on average 84.4) internal successors, (1266), 15 states have internal predecessors, (1266), 0 states have call successors, (0), 0 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 07:12:52,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:52,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 07:12:52,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:52,495 INFO L124 PetriNetUnfolderBase]: 921/1614 cut-off events. [2023-08-27 07:12:52,495 INFO L125 PetriNetUnfolderBase]: For 4059/4189 co-relation queries the response was YES. [2023-08-27 07:12:52,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5834 conditions, 1614 events. 921/1614 cut-off events. For 4059/4189 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9487 event pairs, 170 based on Foata normal form. 130/1244 useless extension candidates. Maximal degree in co-relation 5817. Up to 679 conditions per place. [2023-08-27 07:12:52,507 INFO L140 encePairwiseOnDemand]: 253/266 looper letters, 87 selfloop transitions, 15 changer transitions 0/104 dead transitions. [2023-08-27 07:12:52,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 104 transitions, 1013 flow [2023-08-27 07:12:52,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 07:12:52,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 07:12:52,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 645 transitions. [2023-08-27 07:12:52,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3464017185821697 [2023-08-27 07:12:52,509 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 645 transitions. [2023-08-27 07:12:52,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 645 transitions. [2023-08-27 07:12:52,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:52,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 645 transitions. [2023-08-27 07:12:52,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.14285714285714) internal successors, (645), 7 states have internal predecessors, (645), 0 states have call successors, (0), 0 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 07:12:52,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 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 07:12:52,513 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 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 07:12:52,513 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 477 flow. Second operand 7 states and 645 transitions. [2023-08-27 07:12:52,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 104 transitions, 1013 flow [2023-08-27 07:12:52,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 104 transitions, 990 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 07:12:52,518 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 533 flow [2023-08-27 07:12:52,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=533, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2023-08-27 07:12:52,519 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2023-08-27 07:12:52,519 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 533 flow [2023-08-27 07:12:52,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 84.4) internal successors, (1266), 15 states have internal predecessors, (1266), 0 states have call successors, (0), 0 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 07:12:52,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:52,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:12:52,527 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 07:12:52,724 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 07:12:52,725 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:52,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:52,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1565294426, now seen corresponding path program 1 times [2023-08-27 07:12:52,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:52,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18583583] [2023-08-27 07:12:52,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:52,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:52,924 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 07:12:52,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:52,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18583583] [2023-08-27 07:12:52,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18583583] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:12:52,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930167419] [2023-08-27 07:12:52,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:52,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:52,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:12:52,937 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 07:12:52,993 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 07:12:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:53,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 07:12:53,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:12:53,097 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 07:12:53,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:12:53,121 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 16 treesize of output 18 [2023-08-27 07:12:53,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:12:53,142 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 16 treesize of output 18 [2023-08-27 07:12:53,150 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 07:12:53,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:12:53,215 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:53,215 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 27 treesize of output 28 [2023-08-27 07:12:53,221 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:53,221 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 135 [2023-08-27 07:12:53,224 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-27 07:12:53,233 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-08-27 07:12:53,257 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 07:12:53,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930167419] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:12:53,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:12:53,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-27 07:12:53,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991032028] [2023-08-27 07:12:53,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:12:53,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 07:12:53,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:53,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 07:12:53,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=162, Unknown=4, NotChecked=0, Total=210 [2023-08-27 07:12:53,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 07:12:53,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 533 flow. Second operand has 15 states, 15 states have (on average 84.4) internal successors, (1266), 15 states have internal predecessors, (1266), 0 states have call successors, (0), 0 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 07:12:53,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:53,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 07:12:53,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:53,571 INFO L124 PetriNetUnfolderBase]: 865/1514 cut-off events. [2023-08-27 07:12:53,571 INFO L125 PetriNetUnfolderBase]: For 3756/3878 co-relation queries the response was YES. [2023-08-27 07:12:53,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6456 conditions, 1514 events. 865/1514 cut-off events. For 3756/3878 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8852 event pairs, 172 based on Foata normal form. 122/1318 useless extension candidates. Maximal degree in co-relation 6437. Up to 659 conditions per place. [2023-08-27 07:12:53,577 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 86 selfloop transitions, 15 changer transitions 0/103 dead transitions. [2023-08-27 07:12:53,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 103 transitions, 1047 flow [2023-08-27 07:12:53,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 07:12:53,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 07:12:53,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 642 transitions. [2023-08-27 07:12:53,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3447905477980666 [2023-08-27 07:12:53,593 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 642 transitions. [2023-08-27 07:12:53,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 642 transitions. [2023-08-27 07:12:53,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:53,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 642 transitions. [2023-08-27 07:12:53,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.71428571428571) internal successors, (642), 7 states have internal predecessors, (642), 0 states have call successors, (0), 0 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 07:12:53,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 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 07:12:53,597 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 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 07:12:53,597 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 533 flow. Second operand 7 states and 642 transitions. [2023-08-27 07:12:53,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 103 transitions, 1047 flow [2023-08-27 07:12:53,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 103 transitions, 1039 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 07:12:53,602 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 551 flow [2023-08-27 07:12:53,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=551, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2023-08-27 07:12:53,602 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 28 predicate places. [2023-08-27 07:12:53,602 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 551 flow [2023-08-27 07:12:53,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 84.4) internal successors, (1266), 15 states have internal predecessors, (1266), 0 states have call successors, (0), 0 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 07:12:53,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:53,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:12:53,623 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 07:12:53,803 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 07:12:53,804 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:53,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:53,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1560679161, now seen corresponding path program 1 times [2023-08-27 07:12:53,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:53,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905785245] [2023-08-27 07:12:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:53,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:53,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:53,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905785245] [2023-08-27 07:12:53,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905785245] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:12:53,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635368398] [2023-08-27 07:12:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:53,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:53,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:12:53,884 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 07:12:53,887 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 07:12:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:53,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 07:12:53,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:12:54,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:54,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:12:54,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:54,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635368398] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:12:54,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:12:54,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 07:12:54,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380820372] [2023-08-27 07:12:54,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:12:54,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 07:12:54,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:54,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 07:12:54,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-27 07:12:54,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 07:12:54,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 551 flow. Second operand has 14 states, 14 states have (on average 92.5) internal successors, (1295), 14 states have internal predecessors, (1295), 0 states have call successors, (0), 0 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 07:12:54,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:54,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 07:12:54,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:54,393 INFO L124 PetriNetUnfolderBase]: 1172/2054 cut-off events. [2023-08-27 07:12:54,393 INFO L125 PetriNetUnfolderBase]: For 5952/6181 co-relation queries the response was YES. [2023-08-27 07:12:54,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9147 conditions, 2054 events. 1172/2054 cut-off events. For 5952/6181 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 12535 event pairs, 675 based on Foata normal form. 340/2106 useless extension candidates. Maximal degree in co-relation 9128. Up to 1473 conditions per place. [2023-08-27 07:12:54,404 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 121 selfloop transitions, 14 changer transitions 0/136 dead transitions. [2023-08-27 07:12:54,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 136 transitions, 1296 flow [2023-08-27 07:12:54,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 07:12:54,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 07:12:54,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 723 transitions. [2023-08-27 07:12:54,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3882921589688507 [2023-08-27 07:12:54,406 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 723 transitions. [2023-08-27 07:12:54,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 723 transitions. [2023-08-27 07:12:54,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:54,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 723 transitions. [2023-08-27 07:12:54,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.28571428571429) internal successors, (723), 7 states have internal predecessors, (723), 0 states have call successors, (0), 0 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 07:12:54,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 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 07:12:54,409 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 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 07:12:54,409 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 551 flow. Second operand 7 states and 723 transitions. [2023-08-27 07:12:54,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 136 transitions, 1296 flow [2023-08-27 07:12:54,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 136 transitions, 1277 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 07:12:54,417 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 738 flow [2023-08-27 07:12:54,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=738, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2023-08-27 07:12:54,417 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 33 predicate places. [2023-08-27 07:12:54,417 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 738 flow [2023-08-27 07:12:54,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.5) internal successors, (1295), 14 states have internal predecessors, (1295), 0 states have call successors, (0), 0 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 07:12:54,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:54,418 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:12:54,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-27 07:12:54,623 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 07:12:54,623 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:54,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:54,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1343019323, now seen corresponding path program 2 times [2023-08-27 07:12:54,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:54,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533123508] [2023-08-27 07:12:54,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:54,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:54,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:54,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533123508] [2023-08-27 07:12:54,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533123508] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:12:54,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824815923] [2023-08-27 07:12:54,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:12:54,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:54,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:12:54,833 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 07:12:54,873 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 07:12:54,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 07:12:54,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:12:54,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 07:12:54,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:12:54,963 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 07:12:54,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:12:54,985 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 16 treesize of output 18 [2023-08-27 07:12:55,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:55,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:12:55,076 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:55,077 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 26 treesize of output 27 [2023-08-27 07:12:55,109 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:55,109 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2023-08-27 07:12:55,121 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-08-27 07:12:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:55,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824815923] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:12:55,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:12:55,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-27 07:12:55,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22256738] [2023-08-27 07:12:55,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:12:55,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 07:12:55,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:55,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 07:12:55,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=253, Unknown=2, NotChecked=0, Total=306 [2023-08-27 07:12:55,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 07:12:55,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 738 flow. Second operand has 18 states, 18 states have (on average 87.33333333333333) internal successors, (1572), 18 states have internal predecessors, (1572), 0 states have call successors, (0), 0 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 07:12:55,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:55,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 07:12:55,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:55,607 INFO L124 PetriNetUnfolderBase]: 1178/2064 cut-off events. [2023-08-27 07:12:55,608 INFO L125 PetriNetUnfolderBase]: For 6439/6672 co-relation queries the response was YES. [2023-08-27 07:12:55,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9734 conditions, 2064 events. 1178/2064 cut-off events. For 6439/6672 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 12568 event pairs, 423 based on Foata normal form. 235/2007 useless extension candidates. Maximal degree in co-relation 9712. Up to 1304 conditions per place. [2023-08-27 07:12:55,618 INFO L140 encePairwiseOnDemand]: 252/266 looper letters, 71 selfloop transitions, 43 changer transitions 0/115 dead transitions. [2023-08-27 07:12:55,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 115 transitions, 1243 flow [2023-08-27 07:12:55,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 07:12:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 07:12:55,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1109 transitions. [2023-08-27 07:12:55,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3474310776942356 [2023-08-27 07:12:55,621 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1109 transitions. [2023-08-27 07:12:55,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1109 transitions. [2023-08-27 07:12:55,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:55,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1109 transitions. [2023-08-27 07:12:55,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 92.41666666666667) internal successors, (1109), 12 states have internal predecessors, (1109), 0 states have call successors, (0), 0 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 07:12:55,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 266.0) internal successors, (3458), 13 states have internal predecessors, (3458), 0 states have call successors, (0), 0 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 07:12:55,626 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 266.0) internal successors, (3458), 13 states have internal predecessors, (3458), 0 states have call successors, (0), 0 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 07:12:55,626 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 738 flow. Second operand 12 states and 1109 transitions. [2023-08-27 07:12:55,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 115 transitions, 1243 flow [2023-08-27 07:12:55,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 115 transitions, 1232 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 07:12:55,635 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 980 flow [2023-08-27 07:12:55,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=980, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2023-08-27 07:12:55,636 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 43 predicate places. [2023-08-27 07:12:55,636 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 980 flow [2023-08-27 07:12:55,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 87.33333333333333) internal successors, (1572), 18 states have internal predecessors, (1572), 0 states have call successors, (0), 0 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 07:12:55,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:55,636 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:12:55,643 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 07:12:55,841 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 07:12:55,841 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:55,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:55,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1343019329, now seen corresponding path program 1 times [2023-08-27 07:12:55,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:55,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614575468] [2023-08-27 07:12:55,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:55,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:56,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:56,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614575468] [2023-08-27 07:12:56,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614575468] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:12:56,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095542713] [2023-08-27 07:12:56,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:56,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:56,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:12:56,033 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 07:12:56,035 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 07:12:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:56,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 07:12:56,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:12:56,141 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 07:12:56,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:12:56,157 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 07:12:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:56,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:12:56,222 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:56,222 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 24 treesize of output 25 [2023-08-27 07:12:56,227 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:56,227 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2023-08-27 07:12:56,229 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-27 07:12:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:56,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095542713] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:12:56,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:12:56,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-27 07:12:56,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525752099] [2023-08-27 07:12:56,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:12:56,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 07:12:56,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:56,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 07:12:56,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-08-27 07:12:56,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 07:12:56,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 980 flow. Second operand has 17 states, 17 states have (on average 87.29411764705883) internal successors, (1484), 17 states have internal predecessors, (1484), 0 states have call successors, (0), 0 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 07:12:56,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:56,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 07:12:56,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:56,736 INFO L124 PetriNetUnfolderBase]: 1177/2063 cut-off events. [2023-08-27 07:12:56,736 INFO L125 PetriNetUnfolderBase]: For 7332/7561 co-relation queries the response was YES. [2023-08-27 07:12:56,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10177 conditions, 2063 events. 1177/2063 cut-off events. For 7332/7561 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 12565 event pairs, 401 based on Foata normal form. 230/2001 useless extension candidates. Maximal degree in co-relation 10153. Up to 1303 conditions per place. [2023-08-27 07:12:56,745 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 70 selfloop transitions, 42 changer transitions 0/113 dead transitions. [2023-08-27 07:12:56,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 113 transitions, 1342 flow [2023-08-27 07:12:56,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 07:12:56,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 07:12:56,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1019 transitions. [2023-08-27 07:12:56,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.348257006151743 [2023-08-27 07:12:56,748 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1019 transitions. [2023-08-27 07:12:56,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1019 transitions. [2023-08-27 07:12:56,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:56,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1019 transitions. [2023-08-27 07:12:56,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 92.63636363636364) internal successors, (1019), 11 states have internal predecessors, (1019), 0 states have call successors, (0), 0 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 07:12:56,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 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 07:12:56,753 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 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 07:12:56,753 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 980 flow. Second operand 11 states and 1019 transitions. [2023-08-27 07:12:56,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 113 transitions, 1342 flow [2023-08-27 07:12:56,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 113 transitions, 1320 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-27 07:12:56,767 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 1020 flow [2023-08-27 07:12:56,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1020, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2023-08-27 07:12:56,767 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2023-08-27 07:12:56,767 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 1020 flow [2023-08-27 07:12:56,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 87.29411764705883) internal successors, (1484), 17 states have internal predecessors, (1484), 0 states have call successors, (0), 0 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 07:12:56,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:56,768 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:12:56,774 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 07:12:56,972 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 07:12:56,973 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:56,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:56,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1343019326, now seen corresponding path program 1 times [2023-08-27 07:12:56,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:56,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272300788] [2023-08-27 07:12:56,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:56,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:12:57,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:57,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272300788] [2023-08-27 07:12:57,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272300788] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:12:57,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:12:57,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 07:12:57,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086238469] [2023-08-27 07:12:57,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:12:57,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:12:57,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:57,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:12:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 07:12:57,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 266 [2023-08-27 07:12:57,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 1020 flow. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 07:12:57,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:57,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 266 [2023-08-27 07:12:57,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:57,423 INFO L124 PetriNetUnfolderBase]: 1365/2469 cut-off events. [2023-08-27 07:12:57,424 INFO L125 PetriNetUnfolderBase]: For 9545/10004 co-relation queries the response was YES. [2023-08-27 07:12:57,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12140 conditions, 2469 events. 1365/2469 cut-off events. For 9545/10004 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 16317 event pairs, 174 based on Foata normal form. 459/2641 useless extension candidates. Maximal degree in co-relation 12115. Up to 1083 conditions per place. [2023-08-27 07:12:57,437 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 118 selfloop transitions, 26 changer transitions 1/150 dead transitions. [2023-08-27 07:12:57,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 150 transitions, 1759 flow [2023-08-27 07:12:57,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:12:57,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:12:57,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 639 transitions. [2023-08-27 07:12:57,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48045112781954885 [2023-08-27 07:12:57,439 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 639 transitions. [2023-08-27 07:12:57,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 639 transitions. [2023-08-27 07:12:57,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:57,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 639 transitions. [2023-08-27 07:12:57,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 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 07:12:57,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 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 07:12:57,442 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 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 07:12:57,442 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 1020 flow. Second operand 5 states and 639 transitions. [2023-08-27 07:12:57,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 150 transitions, 1759 flow [2023-08-27 07:12:57,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 150 transitions, 1738 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 07:12:57,461 INFO L231 Difference]: Finished difference. Result has 93 places, 107 transitions, 1336 flow [2023-08-27 07:12:57,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1336, PETRI_PLACES=93, PETRI_TRANSITIONS=107} [2023-08-27 07:12:57,461 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 52 predicate places. [2023-08-27 07:12:57,461 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 107 transitions, 1336 flow [2023-08-27 07:12:57,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 07:12:57,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:57,462 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:12:57,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 07:12:57,462 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:57,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:57,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1343019327, now seen corresponding path program 1 times [2023-08-27 07:12:57,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:57,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66122791] [2023-08-27 07:12:57,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:57,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:57,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:12:57,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:57,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66122791] [2023-08-27 07:12:57,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66122791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:12:57,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:12:57,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 07:12:57,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789253864] [2023-08-27 07:12:57,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:12:57,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:12:57,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:57,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:12:57,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 07:12:57,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 266 [2023-08-27 07:12:57,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 107 transitions, 1336 flow. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 07:12:57,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:57,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 266 [2023-08-27 07:12:57,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:57,803 INFO L124 PetriNetUnfolderBase]: 1285/2382 cut-off events. [2023-08-27 07:12:57,804 INFO L125 PetriNetUnfolderBase]: For 15206/15686 co-relation queries the response was YES. [2023-08-27 07:12:57,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13193 conditions, 2382 events. 1285/2382 cut-off events. For 15206/15686 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 15984 event pairs, 129 based on Foata normal form. 573/2782 useless extension candidates. Maximal degree in co-relation 13163. Up to 962 conditions per place. [2023-08-27 07:12:57,818 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 128 selfloop transitions, 39 changer transitions 1/173 dead transitions. [2023-08-27 07:12:57,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 173 transitions, 2299 flow [2023-08-27 07:12:57,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:12:57,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:12:57,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 639 transitions. [2023-08-27 07:12:57,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48045112781954885 [2023-08-27 07:12:57,819 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 639 transitions. [2023-08-27 07:12:57,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 639 transitions. [2023-08-27 07:12:57,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:57,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 639 transitions. [2023-08-27 07:12:57,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 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 07:12:57,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 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 07:12:57,822 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 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 07:12:57,822 INFO L175 Difference]: Start difference. First operand has 93 places, 107 transitions, 1336 flow. Second operand 5 states and 639 transitions. [2023-08-27 07:12:57,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 173 transitions, 2299 flow [2023-08-27 07:12:57,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 173 transitions, 2299 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 07:12:57,850 INFO L231 Difference]: Finished difference. Result has 101 places, 130 transitions, 1901 flow [2023-08-27 07:12:57,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1285, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1901, PETRI_PLACES=101, PETRI_TRANSITIONS=130} [2023-08-27 07:12:57,851 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2023-08-27 07:12:57,851 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 130 transitions, 1901 flow [2023-08-27 07:12:57,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 07:12:57,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:57,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:12:57,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 07:12:57,851 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:57,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:57,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1009415712, now seen corresponding path program 1 times [2023-08-27 07:12:57,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:57,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942557309] [2023-08-27 07:12:57,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:57,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:57,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:57,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942557309] [2023-08-27 07:12:57,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942557309] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:12:57,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860254453] [2023-08-27 07:12:57,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:57,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:57,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:12:57,921 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 07:12:57,929 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 07:12:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:58,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 07:12:58,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:12:58,024 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 07:12:58,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:12:58,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860254453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:12:58,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:12:58,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2023-08-27 07:12:58,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351113797] [2023-08-27 07:12:58,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:12:58,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:12:58,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:58,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:12:58,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-08-27 07:12:58,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 266 [2023-08-27 07:12:58,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 130 transitions, 1901 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 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 07:12:58,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:58,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 266 [2023-08-27 07:12:58,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:58,308 INFO L124 PetriNetUnfolderBase]: 1112/2061 cut-off events. [2023-08-27 07:12:58,308 INFO L125 PetriNetUnfolderBase]: For 19370/19787 co-relation queries the response was YES. [2023-08-27 07:12:58,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12441 conditions, 2061 events. 1112/2061 cut-off events. For 19370/19787 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 13356 event pairs, 116 based on Foata normal form. 517/2421 useless extension candidates. Maximal degree in co-relation 12405. Up to 1167 conditions per place. [2023-08-27 07:12:58,318 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 113 selfloop transitions, 33 changer transitions 1/152 dead transitions. [2023-08-27 07:12:58,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 152 transitions, 2171 flow [2023-08-27 07:12:58,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:12:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:12:58,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 623 transitions. [2023-08-27 07:12:58,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2023-08-27 07:12:58,320 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 623 transitions. [2023-08-27 07:12:58,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 623 transitions. [2023-08-27 07:12:58,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:58,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 623 transitions. [2023-08-27 07:12:58,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 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 07:12:58,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 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 07:12:58,322 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 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 07:12:58,322 INFO L175 Difference]: Start difference. First operand has 101 places, 130 transitions, 1901 flow. Second operand 5 states and 623 transitions. [2023-08-27 07:12:58,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 152 transitions, 2171 flow [2023-08-27 07:12:58,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 152 transitions, 2151 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-27 07:12:58,347 INFO L231 Difference]: Finished difference. Result has 101 places, 113 transitions, 1609 flow [2023-08-27 07:12:58,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1471, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1609, PETRI_PLACES=101, PETRI_TRANSITIONS=113} [2023-08-27 07:12:58,347 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2023-08-27 07:12:58,348 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 113 transitions, 1609 flow [2023-08-27 07:12:58,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 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 07:12:58,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:58,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:12:58,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-27 07:12:58,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:58,552 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:58,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:58,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1009415708, now seen corresponding path program 1 times [2023-08-27 07:12:58,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:58,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773560806] [2023-08-27 07:12:58,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:58,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:58,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:58,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773560806] [2023-08-27 07:12:58,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773560806] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:12:58,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61535646] [2023-08-27 07:12:58,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:58,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:58,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:12:58,629 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 07:12:58,689 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 07:12:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:58,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 07:12:58,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:12:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:58,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:12:58,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:58,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61535646] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:12:58,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:12:58,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 07:12:58,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786785382] [2023-08-27 07:12:58,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:12:58,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 07:12:58,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:58,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 07:12:58,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-27 07:12:58,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 07:12:58,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 113 transitions, 1609 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 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 07:12:58,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:58,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 07:12:58,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:59,122 INFO L124 PetriNetUnfolderBase]: 979/1811 cut-off events. [2023-08-27 07:12:59,122 INFO L125 PetriNetUnfolderBase]: For 15551/15722 co-relation queries the response was YES. [2023-08-27 07:12:59,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10970 conditions, 1811 events. 979/1811 cut-off events. For 15551/15722 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 11016 event pairs, 570 based on Foata normal form. 261/1939 useless extension candidates. Maximal degree in co-relation 10934. Up to 1548 conditions per place. [2023-08-27 07:12:59,133 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 132 selfloop transitions, 10 changer transitions 0/146 dead transitions. [2023-08-27 07:12:59,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 146 transitions, 2202 flow [2023-08-27 07:12:59,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 07:12:59,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 07:12:59,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 702 transitions. [2023-08-27 07:12:59,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3770139634801289 [2023-08-27 07:12:59,134 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 702 transitions. [2023-08-27 07:12:59,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 702 transitions. [2023-08-27 07:12:59,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:59,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 702 transitions. [2023-08-27 07:12:59,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.28571428571429) internal successors, (702), 7 states have internal predecessors, (702), 0 states have call successors, (0), 0 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 07:12:59,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 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 07:12:59,137 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 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 07:12:59,137 INFO L175 Difference]: Start difference. First operand has 101 places, 113 transitions, 1609 flow. Second operand 7 states and 702 transitions. [2023-08-27 07:12:59,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 146 transitions, 2202 flow [2023-08-27 07:12:59,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 146 transitions, 2202 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 07:12:59,163 INFO L231 Difference]: Finished difference. Result has 110 places, 117 transitions, 1683 flow [2023-08-27 07:12:59,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1683, PETRI_PLACES=110, PETRI_TRANSITIONS=117} [2023-08-27 07:12:59,164 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2023-08-27 07:12:59,164 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 117 transitions, 1683 flow [2023-08-27 07:12:59,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 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 07:12:59,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:59,164 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:12:59,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-27 07:12:59,369 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,SelfDestructingSolverStorable19 [2023-08-27 07:12:59,369 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:12:59,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:59,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1457859252, now seen corresponding path program 1 times [2023-08-27 07:12:59,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:59,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428608885] [2023-08-27 07:12:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:59,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:59,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:59,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:59,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428608885] [2023-08-27 07:12:59,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428608885] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:12:59,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524751969] [2023-08-27 07:12:59,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:59,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:59,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:12:59,586 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 07:12:59,612 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 07:12:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:59,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 07:12:59,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:12:59,727 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 07:12:59,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:12:59,753 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 07:12:59,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:12:59,774 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 07:12:59,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:59,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:12:59,883 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:59,883 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 27 treesize of output 28 [2023-08-27 07:12:59,888 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:12:59,889 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 129 [2023-08-27 07:12:59,892 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-08-27 07:12:59,895 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-08-27 07:12:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:59,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524751969] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:12:59,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:12:59,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 07:12:59,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713471005] [2023-08-27 07:12:59,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:12:59,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 07:12:59,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:59,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 07:12:59,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=316, Unknown=4, NotChecked=0, Total=380 [2023-08-27 07:12:59,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 07:12:59,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 117 transitions, 1683 flow. Second operand has 20 states, 20 states have (on average 84.3) internal successors, (1686), 20 states have internal predecessors, (1686), 0 states have call successors, (0), 0 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 07:12:59,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:59,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 07:12:59,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:00,505 INFO L124 PetriNetUnfolderBase]: 1233/2230 cut-off events. [2023-08-27 07:13:00,505 INFO L125 PetriNetUnfolderBase]: For 22814/22975 co-relation queries the response was YES. [2023-08-27 07:13:00,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14458 conditions, 2230 events. 1233/2230 cut-off events. For 22814/22975 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 13560 event pairs, 381 based on Foata normal form. 262/2325 useless extension candidates. Maximal degree in co-relation 14417. Up to 755 conditions per place. [2023-08-27 07:13:00,520 INFO L140 encePairwiseOnDemand]: 253/266 looper letters, 150 selfloop transitions, 57 changer transitions 0/209 dead transitions. [2023-08-27 07:13:00,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 209 transitions, 3121 flow [2023-08-27 07:13:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 07:13:00,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 07:13:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1023 transitions. [2023-08-27 07:13:00,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34962406015037595 [2023-08-27 07:13:00,522 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1023 transitions. [2023-08-27 07:13:00,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1023 transitions. [2023-08-27 07:13:00,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:00,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1023 transitions. [2023-08-27 07:13:00,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 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 07:13:00,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 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 07:13:00,526 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 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 07:13:00,526 INFO L175 Difference]: Start difference. First operand has 110 places, 117 transitions, 1683 flow. Second operand 11 states and 1023 transitions. [2023-08-27 07:13:00,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 209 transitions, 3121 flow [2023-08-27 07:13:00,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 209 transitions, 3110 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 07:13:00,561 INFO L231 Difference]: Finished difference. Result has 119 places, 131 transitions, 2129 flow [2023-08-27 07:13:00,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1674, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2129, PETRI_PLACES=119, PETRI_TRANSITIONS=131} [2023-08-27 07:13:00,561 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 78 predicate places. [2023-08-27 07:13:00,561 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 131 transitions, 2129 flow [2023-08-27 07:13:00,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 84.3) internal successors, (1686), 20 states have internal predecessors, (1686), 0 states have call successors, (0), 0 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 07:13:00,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:00,562 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:00,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-27 07:13:00,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:00,767 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:00,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:00,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1457859258, now seen corresponding path program 1 times [2023-08-27 07:13:00,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:00,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954327187] [2023-08-27 07:13:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:00,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:00,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:00,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954327187] [2023-08-27 07:13:00,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954327187] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:00,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156452999] [2023-08-27 07:13:00,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:00,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:00,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:01,013 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 07:13:01,048 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 07:13:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:01,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 07:13:01,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:01,163 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 07:13:01,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:01,187 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 16 treesize of output 18 [2023-08-27 07:13:01,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:01,207 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 16 treesize of output 18 [2023-08-27 07:13:01,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:01,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:01,283 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_575 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_575) c_~A~0.base) (+ c_~A~0.offset 4)) 9223372039002259456))) is different from false [2023-08-27 07:13:01,321 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:01,322 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 29 treesize of output 30 [2023-08-27 07:13:01,327 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:01,327 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-08-27 07:13:01,330 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-08-27 07:13:01,336 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-08-27 07:13:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:01,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156452999] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:01,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:01,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-27 07:13:01,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301145245] [2023-08-27 07:13:01,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:01,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 07:13:01,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:01,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 07:13:01,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=321, Unknown=1, NotChecked=36, Total=420 [2023-08-27 07:13:01,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 07:13:01,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 131 transitions, 2129 flow. Second operand has 21 states, 21 states have (on average 84.33333333333333) internal successors, (1771), 21 states have internal predecessors, (1771), 0 states have call successors, (0), 0 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 07:13:01,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:01,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 07:13:01,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:02,116 INFO L124 PetriNetUnfolderBase]: 1177/2137 cut-off events. [2023-08-27 07:13:02,117 INFO L125 PetriNetUnfolderBase]: For 26979/27124 co-relation queries the response was YES. [2023-08-27 07:13:02,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14797 conditions, 2137 events. 1177/2137 cut-off events. For 26979/27124 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 12895 event pairs, 404 based on Foata normal form. 184/2158 useless extension candidates. Maximal degree in co-relation 14754. Up to 739 conditions per place. [2023-08-27 07:13:02,129 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 173 selfloop transitions, 57 changer transitions 0/232 dead transitions. [2023-08-27 07:13:02,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 232 transitions, 3577 flow [2023-08-27 07:13:02,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 07:13:02,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 07:13:02,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1206 transitions. [2023-08-27 07:13:02,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34875650665124347 [2023-08-27 07:13:02,131 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1206 transitions. [2023-08-27 07:13:02,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1206 transitions. [2023-08-27 07:13:02,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:02,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1206 transitions. [2023-08-27 07:13:02,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 92.76923076923077) internal successors, (1206), 13 states have internal predecessors, (1206), 0 states have call successors, (0), 0 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 07:13:02,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 266.0) internal successors, (3724), 14 states have internal predecessors, (3724), 0 states have call successors, (0), 0 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 07:13:02,136 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 266.0) internal successors, (3724), 14 states have internal predecessors, (3724), 0 states have call successors, (0), 0 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 07:13:02,136 INFO L175 Difference]: Start difference. First operand has 119 places, 131 transitions, 2129 flow. Second operand 13 states and 1206 transitions. [2023-08-27 07:13:02,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 232 transitions, 3577 flow [2023-08-27 07:13:02,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 232 transitions, 3390 flow, removed 17 selfloop flow, removed 9 redundant places. [2023-08-27 07:13:02,169 INFO L231 Difference]: Finished difference. Result has 122 places, 130 transitions, 2043 flow [2023-08-27 07:13:02,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2043, PETRI_PLACES=122, PETRI_TRANSITIONS=130} [2023-08-27 07:13:02,170 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 81 predicate places. [2023-08-27 07:13:02,170 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 130 transitions, 2043 flow [2023-08-27 07:13:02,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 84.33333333333333) internal successors, (1771), 21 states have internal predecessors, (1771), 0 states have call successors, (0), 0 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 07:13:02,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:02,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:02,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-27 07:13:02,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:02,375 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:02,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:02,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1226967652, now seen corresponding path program 1 times [2023-08-27 07:13:02,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:02,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151474287] [2023-08-27 07:13:02,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:02,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:02,411 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 07:13:02,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:02,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151474287] [2023-08-27 07:13:02,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151474287] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:02,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:13:02,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 07:13:02,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228708338] [2023-08-27 07:13:02,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:02,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:13:02,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:02,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:13:02,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 07:13:02,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 266 [2023-08-27 07:13:02,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 130 transitions, 2043 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 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 07:13:02,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:02,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 266 [2023-08-27 07:13:02,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:02,625 INFO L124 PetriNetUnfolderBase]: 958/1721 cut-off events. [2023-08-27 07:13:02,625 INFO L125 PetriNetUnfolderBase]: For 22019/22324 co-relation queries the response was YES. [2023-08-27 07:13:02,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11531 conditions, 1721 events. 958/1721 cut-off events. For 22019/22324 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10078 event pairs, 86 based on Foata normal form. 393/1971 useless extension candidates. Maximal degree in co-relation 11490. Up to 793 conditions per place. [2023-08-27 07:13:02,634 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 118 selfloop transitions, 28 changer transitions 1/153 dead transitions. [2023-08-27 07:13:02,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 153 transitions, 2340 flow [2023-08-27 07:13:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:13:02,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:13:02,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 621 transitions. [2023-08-27 07:13:02,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46691729323308273 [2023-08-27 07:13:02,636 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 621 transitions. [2023-08-27 07:13:02,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 621 transitions. [2023-08-27 07:13:02,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:02,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 621 transitions. [2023-08-27 07:13:02,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.2) internal successors, (621), 5 states have internal predecessors, (621), 0 states have call successors, (0), 0 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 07:13:02,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 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 07:13:02,638 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 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 07:13:02,639 INFO L175 Difference]: Start difference. First operand has 122 places, 130 transitions, 2043 flow. Second operand 5 states and 621 transitions. [2023-08-27 07:13:02,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 153 transitions, 2340 flow [2023-08-27 07:13:02,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 153 transitions, 2138 flow, removed 18 selfloop flow, removed 15 redundant places. [2023-08-27 07:13:02,661 INFO L231 Difference]: Finished difference. Result has 108 places, 105 transitions, 1450 flow [2023-08-27 07:13:02,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1450, PETRI_PLACES=108, PETRI_TRANSITIONS=105} [2023-08-27 07:13:02,662 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 67 predicate places. [2023-08-27 07:13:02,662 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 105 transitions, 1450 flow [2023-08-27 07:13:02,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 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 07:13:02,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:02,662 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:02,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 07:13:02,662 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:02,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:02,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2011052311, now seen corresponding path program 1 times [2023-08-27 07:13:02,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:02,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688297891] [2023-08-27 07:13:02,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:02,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:02,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:02,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688297891] [2023-08-27 07:13:02,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688297891] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:02,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101608725] [2023-08-27 07:13:02,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:02,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:02,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:02,902 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 07:13:02,917 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 07:13:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:03,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 07:13:03,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:03,053 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 07:13:03,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:03,075 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 16 treesize of output 18 [2023-08-27 07:13:03,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:03,094 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 16 treesize of output 18 [2023-08-27 07:13:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:03,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:03,138 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_628 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_628) c_~A~0.base) (+ c_~A~0.offset 4)) 4294967296))) is different from false [2023-08-27 07:13:03,171 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:03,171 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 29 treesize of output 30 [2023-08-27 07:13:03,176 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:03,176 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-08-27 07:13:03,181 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-08-27 07:13:03,194 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-08-27 07:13:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:03,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101608725] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:03,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:03,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 07:13:03,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213533707] [2023-08-27 07:13:03,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:03,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 07:13:03,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:03,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 07:13:03,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=4, NotChecked=34, Total=380 [2023-08-27 07:13:03,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 07:13:03,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 1450 flow. Second operand has 20 states, 20 states have (on average 84.4) internal successors, (1688), 20 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 07:13:03,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:03,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 07:13:03,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:03,790 INFO L124 PetriNetUnfolderBase]: 1379/2386 cut-off events. [2023-08-27 07:13:03,790 INFO L125 PetriNetUnfolderBase]: For 23278/23435 co-relation queries the response was YES. [2023-08-27 07:13:03,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14938 conditions, 2386 events. 1379/2386 cut-off events. For 23278/23435 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 13324 event pairs, 326 based on Foata normal form. 289/2526 useless extension candidates. Maximal degree in co-relation 14903. Up to 842 conditions per place. [2023-08-27 07:13:03,801 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 177 selfloop transitions, 26 changer transitions 0/207 dead transitions. [2023-08-27 07:13:03,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 207 transitions, 3216 flow [2023-08-27 07:13:03,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 07:13:03,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 07:13:03,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1013 transitions. [2023-08-27 07:13:03,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3462064251537936 [2023-08-27 07:13:03,802 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1013 transitions. [2023-08-27 07:13:03,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1013 transitions. [2023-08-27 07:13:03,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:03,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1013 transitions. [2023-08-27 07:13:03,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 92.0909090909091) internal successors, (1013), 11 states have internal predecessors, (1013), 0 states have call successors, (0), 0 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 07:13:03,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 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 07:13:03,806 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 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 07:13:03,806 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 1450 flow. Second operand 11 states and 1013 transitions. [2023-08-27 07:13:03,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 207 transitions, 3216 flow [2023-08-27 07:13:03,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 207 transitions, 3118 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 07:13:03,827 INFO L231 Difference]: Finished difference. Result has 116 places, 112 transitions, 1542 flow [2023-08-27 07:13:03,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1542, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2023-08-27 07:13:03,827 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2023-08-27 07:13:03,827 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 1542 flow [2023-08-27 07:13:03,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 84.4) internal successors, (1688), 20 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 07:13:03,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:03,828 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:03,832 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 07:13:04,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-27 07:13:04,032 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:04,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:04,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2011052312, now seen corresponding path program 2 times [2023-08-27 07:13:04,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:04,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562403835] [2023-08-27 07:13:04,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:04,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:04,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:04,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562403835] [2023-08-27 07:13:04,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562403835] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:04,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328635988] [2023-08-27 07:13:04,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:13:04,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:04,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:04,287 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 07:13:04,289 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 07:13:04,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 07:13:04,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:04,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 07:13:04,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:04,418 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 13 treesize of output 9 [2023-08-27 07:13:04,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:04,439 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 16 treesize of output 18 [2023-08-27 07:13:04,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:04,459 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 16 treesize of output 18 [2023-08-27 07:13:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:04,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:04,548 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_666 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_666) c_~A~0.base) (+ c_~A~0.offset 4)) 9223372039002259456)) is different from false [2023-08-27 07:13:04,578 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:04,578 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 27 treesize of output 28 [2023-08-27 07:13:04,583 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:04,583 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-08-27 07:13:04,586 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-08-27 07:13:04,589 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-27 07:13:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:04,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328635988] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:04,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:04,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-08-27 07:13:04,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859045402] [2023-08-27 07:13:04,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:04,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 07:13:04,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:04,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 07:13:04,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=4, NotChecked=40, Total=506 [2023-08-27 07:13:04,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 07:13:04,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 1542 flow. Second operand has 23 states, 23 states have (on average 84.43478260869566) internal successors, (1942), 23 states have internal predecessors, (1942), 0 states have call successors, (0), 0 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 07:13:04,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:04,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 07:13:04,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:05,447 INFO L124 PetriNetUnfolderBase]: 1287/2228 cut-off events. [2023-08-27 07:13:05,447 INFO L125 PetriNetUnfolderBase]: For 21802/21949 co-relation queries the response was YES. [2023-08-27 07:13:05,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14740 conditions, 2228 events. 1287/2228 cut-off events. For 21802/21949 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12434 event pairs, 302 based on Foata normal form. 213/2298 useless extension candidates. Maximal degree in co-relation 14703. Up to 842 conditions per place. [2023-08-27 07:13:05,458 INFO L140 encePairwiseOnDemand]: 257/266 looper letters, 199 selfloop transitions, 26 changer transitions 0/229 dead transitions. [2023-08-27 07:13:05,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 229 transitions, 3601 flow [2023-08-27 07:13:05,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 07:13:05,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 07:13:05,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1103 transitions. [2023-08-27 07:13:05,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3455513784461153 [2023-08-27 07:13:05,461 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1103 transitions. [2023-08-27 07:13:05,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1103 transitions. [2023-08-27 07:13:05,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:05,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1103 transitions. [2023-08-27 07:13:05,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 91.91666666666667) internal successors, (1103), 12 states have internal predecessors, (1103), 0 states have call successors, (0), 0 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 07:13:05,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 266.0) internal successors, (3458), 13 states have internal predecessors, (3458), 0 states have call successors, (0), 0 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 07:13:05,464 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 266.0) internal successors, (3458), 13 states have internal predecessors, (3458), 0 states have call successors, (0), 0 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 07:13:05,464 INFO L175 Difference]: Start difference. First operand has 116 places, 112 transitions, 1542 flow. Second operand 12 states and 1103 transitions. [2023-08-27 07:13:05,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 229 transitions, 3601 flow [2023-08-27 07:13:05,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 229 transitions, 3557 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-27 07:13:05,487 INFO L231 Difference]: Finished difference. Result has 121 places, 111 transitions, 1540 flow [2023-08-27 07:13:05,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1540, PETRI_PLACES=121, PETRI_TRANSITIONS=111} [2023-08-27 07:13:05,488 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2023-08-27 07:13:05,488 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 111 transitions, 1540 flow [2023-08-27 07:13:05,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 84.43478260869566) internal successors, (1942), 23 states have internal predecessors, (1942), 0 states have call successors, (0), 0 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 07:13:05,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:05,489 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 07:13:05,493 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 07:13:05,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:05,693 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:05,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:05,693 INFO L85 PathProgramCache]: Analyzing trace with hash 2143606927, now seen corresponding path program 3 times [2023-08-27 07:13:05,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:05,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42408361] [2023-08-27 07:13:05,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:05,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:05,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:05,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42408361] [2023-08-27 07:13:05,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42408361] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:05,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001849652] [2023-08-27 07:13:05,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 07:13:05,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:05,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:05,756 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 07:13:05,758 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 07:13:05,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 07:13:05,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:05,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 07:13:05,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:05,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:05,996 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:05,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001849652] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:05,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:05,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 07:13:05,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234300689] [2023-08-27 07:13:05,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:05,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 07:13:05,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:05,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 07:13:05,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-08-27 07:13:05,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 07:13:06,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 111 transitions, 1540 flow. Second operand has 19 states, 19 states have (on average 92.47368421052632) internal successors, (1757), 19 states have internal predecessors, (1757), 0 states have call successors, (0), 0 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 07:13:06,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:06,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 07:13:06,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:06,501 INFO L124 PetriNetUnfolderBase]: 1847/3188 cut-off events. [2023-08-27 07:13:06,501 INFO L125 PetriNetUnfolderBase]: For 33109/33374 co-relation queries the response was YES. [2023-08-27 07:13:06,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21304 conditions, 3188 events. 1847/3188 cut-off events. For 33109/33374 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 18896 event pairs, 809 based on Foata normal form. 397/3400 useless extension candidates. Maximal degree in co-relation 21268. Up to 1935 conditions per place. [2023-08-27 07:13:06,516 INFO L140 encePairwiseOnDemand]: 257/266 looper letters, 191 selfloop transitions, 37 changer transitions 0/230 dead transitions. [2023-08-27 07:13:06,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 230 transitions, 3470 flow [2023-08-27 07:13:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 07:13:06,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 07:13:06,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 906 transitions. [2023-08-27 07:13:06,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37844611528822053 [2023-08-27 07:13:06,517 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 906 transitions. [2023-08-27 07:13:06,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 906 transitions. [2023-08-27 07:13:06,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:06,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 906 transitions. [2023-08-27 07:13:06,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 100.66666666666667) internal successors, (906), 9 states have internal predecessors, (906), 0 states have call successors, (0), 0 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 07:13:06,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 266.0) internal successors, (2660), 10 states have internal predecessors, (2660), 0 states have call successors, (0), 0 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 07:13:06,527 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 266.0) internal successors, (2660), 10 states have internal predecessors, (2660), 0 states have call successors, (0), 0 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 07:13:06,527 INFO L175 Difference]: Start difference. First operand has 121 places, 111 transitions, 1540 flow. Second operand 9 states and 906 transitions. [2023-08-27 07:13:06,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 230 transitions, 3470 flow [2023-08-27 07:13:06,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 230 transitions, 3370 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-27 07:13:06,555 INFO L231 Difference]: Finished difference. Result has 124 places, 130 transitions, 2027 flow [2023-08-27 07:13:06,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2027, PETRI_PLACES=124, PETRI_TRANSITIONS=130} [2023-08-27 07:13:06,556 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2023-08-27 07:13:06,556 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 130 transitions, 2027 flow [2023-08-27 07:13:06,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 92.47368421052632) internal successors, (1757), 19 states have internal predecessors, (1757), 0 states have call successors, (0), 0 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 07:13:06,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:06,556 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 07:13:06,577 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 07:13:06,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:06,777 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:06,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:06,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1296588477, now seen corresponding path program 4 times [2023-08-27 07:13:06,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:06,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746274567] [2023-08-27 07:13:06,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:06,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:06,992 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 07:13:06,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:06,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746274567] [2023-08-27 07:13:06,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746274567] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:06,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793406923] [2023-08-27 07:13:06,993 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 07:13:06,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:06,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:07,005 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:07,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 07:13:07,126 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 07:13:07,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:07,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 07:13:07,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:07,176 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 07:13:07,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:07,201 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 16 treesize of output 18 [2023-08-27 07:13:07,253 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 07:13:07,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:07,313 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_733 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_733) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2023-08-27 07:13:07,319 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:07,319 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 26 treesize of output 27 [2023-08-27 07:13:07,324 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:07,324 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2023-08-27 07:13:07,327 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-08-27 07:13:07,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-08-27 07:13:07,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793406923] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:07,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:07,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-08-27 07:13:07,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355251166] [2023-08-27 07:13:07,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:07,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 07:13:07,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:07,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 07:13:07,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=440, Unknown=1, NotChecked=42, Total=552 [2023-08-27 07:13:07,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 07:13:07,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 130 transitions, 2027 flow. Second operand has 24 states, 24 states have (on average 87.375) internal successors, (2097), 24 states have internal predecessors, (2097), 0 states have call successors, (0), 0 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 07:13:07,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:07,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 07:13:07,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:07,991 INFO L124 PetriNetUnfolderBase]: 1851/3196 cut-off events. [2023-08-27 07:13:07,991 INFO L125 PetriNetUnfolderBase]: For 34590/34799 co-relation queries the response was YES. [2023-08-27 07:13:08,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22022 conditions, 3196 events. 1851/3196 cut-off events. For 34590/34799 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 18672 event pairs, 656 based on Foata normal form. 211/3196 useless extension candidates. Maximal degree in co-relation 21982. Up to 2329 conditions per place. [2023-08-27 07:13:08,070 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 113 selfloop transitions, 62 changer transitions 0/177 dead transitions. [2023-08-27 07:13:08,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 177 transitions, 2950 flow [2023-08-27 07:13:08,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 07:13:08,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 07:13:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1364 transitions. [2023-08-27 07:13:08,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3418546365914787 [2023-08-27 07:13:08,072 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1364 transitions. [2023-08-27 07:13:08,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1364 transitions. [2023-08-27 07:13:08,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:08,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1364 transitions. [2023-08-27 07:13:08,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 90.93333333333334) internal successors, (1364), 15 states have internal predecessors, (1364), 0 states have call successors, (0), 0 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 07:13:08,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 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 07:13:08,077 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 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 07:13:08,077 INFO L175 Difference]: Start difference. First operand has 124 places, 130 transitions, 2027 flow. Second operand 15 states and 1364 transitions. [2023-08-27 07:13:08,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 177 transitions, 2950 flow [2023-08-27 07:13:08,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 177 transitions, 2930 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-27 07:13:08,122 INFO L231 Difference]: Finished difference. Result has 138 places, 144 transitions, 2353 flow [2023-08-27 07:13:08,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2353, PETRI_PLACES=138, PETRI_TRANSITIONS=144} [2023-08-27 07:13:08,122 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2023-08-27 07:13:08,122 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 144 transitions, 2353 flow [2023-08-27 07:13:08,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 87.375) internal successors, (2097), 24 states have internal predecessors, (2097), 0 states have call successors, (0), 0 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 07:13:08,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:08,123 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 07:13:08,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:08,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:08,328 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:08,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:08,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1296588483, now seen corresponding path program 2 times [2023-08-27 07:13:08,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:08,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487431762] [2023-08-27 07:13:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:08,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:08,652 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 07:13:08,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:08,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487431762] [2023-08-27 07:13:08,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487431762] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:08,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966106520] [2023-08-27 07:13:08,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:13:08,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:08,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:08,654 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:08,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 07:13:08,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 07:13:08,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:08,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-27 07:13:08,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:08,834 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 07:13:08,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:08,861 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 07:13:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:08,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:09,122 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:09,123 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 26 treesize of output 27 [2023-08-27 07:13:09,129 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:09,129 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2023-08-27 07:13:09,132 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-08-27 07:13:09,285 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:09,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966106520] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:09,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:09,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-08-27 07:13:09,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14717766] [2023-08-27 07:13:09,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:09,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 07:13:09,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:09,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 07:13:09,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2023-08-27 07:13:09,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 266 [2023-08-27 07:13:09,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 144 transitions, 2353 flow. Second operand has 26 states, 26 states have (on average 78.38461538461539) internal successors, (2038), 26 states have internal predecessors, (2038), 0 states have call successors, (0), 0 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 07:13:09,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:09,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 266 [2023-08-27 07:13:09,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:12,731 INFO L124 PetriNetUnfolderBase]: 2822/4762 cut-off events. [2023-08-27 07:13:12,731 INFO L125 PetriNetUnfolderBase]: For 55280/55669 co-relation queries the response was YES. [2023-08-27 07:13:12,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34150 conditions, 4762 events. 2822/4762 cut-off events. For 55280/55669 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 29137 event pairs, 782 based on Foata normal form. 437/4885 useless extension candidates. Maximal degree in co-relation 34106. Up to 1466 conditions per place. [2023-08-27 07:13:12,758 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 273 selfloop transitions, 141 changer transitions 0/416 dead transitions. [2023-08-27 07:13:12,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 416 transitions, 6799 flow [2023-08-27 07:13:12,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-27 07:13:12,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-27 07:13:12,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3624 transitions. [2023-08-27 07:13:12,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30963773069036227 [2023-08-27 07:13:12,762 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3624 transitions. [2023-08-27 07:13:12,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3624 transitions. [2023-08-27 07:13:12,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:12,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3624 transitions. [2023-08-27 07:13:12,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 82.36363636363636) internal successors, (3624), 44 states have internal predecessors, (3624), 0 states have call successors, (0), 0 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 07:13:12,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 266.0) internal successors, (11970), 45 states have internal predecessors, (11970), 0 states have call successors, (0), 0 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 07:13:12,772 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 266.0) internal successors, (11970), 45 states have internal predecessors, (11970), 0 states have call successors, (0), 0 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 07:13:12,772 INFO L175 Difference]: Start difference. First operand has 138 places, 144 transitions, 2353 flow. Second operand 44 states and 3624 transitions. [2023-08-27 07:13:12,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 416 transitions, 6799 flow [2023-08-27 07:13:12,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 416 transitions, 6712 flow, removed 36 selfloop flow, removed 5 redundant places. [2023-08-27 07:13:12,841 INFO L231 Difference]: Finished difference. Result has 186 places, 219 transitions, 3991 flow [2023-08-27 07:13:12,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=3991, PETRI_PLACES=186, PETRI_TRANSITIONS=219} [2023-08-27 07:13:12,841 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 145 predicate places. [2023-08-27 07:13:12,842 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 219 transitions, 3991 flow [2023-08-27 07:13:12,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.38461538461539) internal successors, (2038), 26 states have internal predecessors, (2038), 0 states have call successors, (0), 0 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 07:13:12,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:12,842 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:12,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:13,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-27 07:13:13,047 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:13,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:13,048 INFO L85 PathProgramCache]: Analyzing trace with hash 114038251, now seen corresponding path program 3 times [2023-08-27 07:13:13,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:13,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436939100] [2023-08-27 07:13:13,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:13,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:13,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:13,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436939100] [2023-08-27 07:13:13,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436939100] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:13,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557479319] [2023-08-27 07:13:13,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 07:13:13,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:13,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:13,173 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:13,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 07:13:13,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 07:13:13,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:13,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 07:13:13,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:13,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:13,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:13,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557479319] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:13,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:13,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 07:13:13,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870550038] [2023-08-27 07:13:13,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:13,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 07:13:13,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:13,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 07:13:13,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-08-27 07:13:13,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 07:13:13,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 219 transitions, 3991 flow. Second operand has 19 states, 19 states have (on average 92.57894736842105) internal successors, (1759), 19 states have internal predecessors, (1759), 0 states have call successors, (0), 0 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 07:13:13,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:13,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 07:13:13,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:13,995 INFO L124 PetriNetUnfolderBase]: 2634/4445 cut-off events. [2023-08-27 07:13:13,995 INFO L125 PetriNetUnfolderBase]: For 69637/69819 co-relation queries the response was YES. [2023-08-27 07:13:14,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33797 conditions, 4445 events. 2634/4445 cut-off events. For 69637/69819 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 26299 event pairs, 1278 based on Foata normal form. 278/4603 useless extension candidates. Maximal degree in co-relation 33742. Up to 3621 conditions per place. [2023-08-27 07:13:14,022 INFO L140 encePairwiseOnDemand]: 257/266 looper letters, 257 selfloop transitions, 21 changer transitions 0/286 dead transitions. [2023-08-27 07:13:14,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 286 transitions, 5540 flow [2023-08-27 07:13:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 07:13:14,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 07:13:14,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 890 transitions. [2023-08-27 07:13:14,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3717627401837928 [2023-08-27 07:13:14,024 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 890 transitions. [2023-08-27 07:13:14,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 890 transitions. [2023-08-27 07:13:14,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:14,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 890 transitions. [2023-08-27 07:13:14,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 98.88888888888889) internal successors, (890), 9 states have internal predecessors, (890), 0 states have call successors, (0), 0 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 07:13:14,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 266.0) internal successors, (2660), 10 states have internal predecessors, (2660), 0 states have call successors, (0), 0 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 07:13:14,027 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 266.0) internal successors, (2660), 10 states have internal predecessors, (2660), 0 states have call successors, (0), 0 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 07:13:14,027 INFO L175 Difference]: Start difference. First operand has 186 places, 219 transitions, 3991 flow. Second operand 9 states and 890 transitions. [2023-08-27 07:13:14,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 286 transitions, 5540 flow [2023-08-27 07:13:14,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 286 transitions, 5157 flow, removed 57 selfloop flow, removed 15 redundant places. [2023-08-27 07:13:14,120 INFO L231 Difference]: Finished difference. Result has 183 places, 228 transitions, 3827 flow [2023-08-27 07:13:14,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=3608, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3827, PETRI_PLACES=183, PETRI_TRANSITIONS=228} [2023-08-27 07:13:14,122 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 142 predicate places. [2023-08-27 07:13:14,122 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 228 transitions, 3827 flow [2023-08-27 07:13:14,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 92.57894736842105) internal successors, (1759), 19 states have internal predecessors, (1759), 0 states have call successors, (0), 0 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 07:13:14,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:14,123 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:14,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:14,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 07:13:14,328 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:14,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:14,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1571553546, now seen corresponding path program 2 times [2023-08-27 07:13:14,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:14,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119273876] [2023-08-27 07:13:14,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:14,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:14,738 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 07:13:14,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:14,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119273876] [2023-08-27 07:13:14,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119273876] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:14,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238619832] [2023-08-27 07:13:14,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:13:14,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:14,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:14,762 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:14,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 07:13:14,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 07:13:14,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:14,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 07:13:14,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:15,010 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 13 treesize of output 9 [2023-08-27 07:13:15,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:15,032 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 16 treesize of output 18 [2023-08-27 07:13:15,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:15,082 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 16 treesize of output 18 [2023-08-27 07:13:15,151 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 07:13:15,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:15,219 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_846 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_846) c_~A~0.base) (+ c_~A~0.offset 8)) 4294967296)) is different from false [2023-08-27 07:13:15,258 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:15,258 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 27 treesize of output 28 [2023-08-27 07:13:15,263 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:15,264 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-08-27 07:13:15,266 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-08-27 07:13:15,269 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-27 07:13:15,348 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 07:13:15,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238619832] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:15,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:15,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-08-27 07:13:15,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316505508] [2023-08-27 07:13:15,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:15,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 07:13:15,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:15,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 07:13:15,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=668, Unknown=5, NotChecked=52, Total=812 [2023-08-27 07:13:15,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 07:13:15,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 228 transitions, 3827 flow. Second operand has 29 states, 29 states have (on average 84.34482758620689) internal successors, (2446), 29 states have internal predecessors, (2446), 0 states have call successors, (0), 0 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 07:13:15,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:15,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 07:13:15,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:16,896 INFO L124 PetriNetUnfolderBase]: 3026/5075 cut-off events. [2023-08-27 07:13:16,896 INFO L125 PetriNetUnfolderBase]: For 94876/95326 co-relation queries the response was YES. [2023-08-27 07:13:16,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39889 conditions, 5075 events. 3026/5075 cut-off events. For 94876/95326 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 30893 event pairs, 799 based on Foata normal form. 808/5729 useless extension candidates. Maximal degree in co-relation 39832. Up to 1562 conditions per place. [2023-08-27 07:13:16,932 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 276 selfloop transitions, 113 changer transitions 0/392 dead transitions. [2023-08-27 07:13:16,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 392 transitions, 6684 flow [2023-08-27 07:13:16,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 07:13:16,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 07:13:16,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1381 transitions. [2023-08-27 07:13:16,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3461152882205514 [2023-08-27 07:13:16,940 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1381 transitions. [2023-08-27 07:13:16,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1381 transitions. [2023-08-27 07:13:16,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:16,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1381 transitions. [2023-08-27 07:13:16,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 92.06666666666666) internal successors, (1381), 15 states have internal predecessors, (1381), 0 states have call successors, (0), 0 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 07:13:16,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 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 07:13:16,949 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 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 07:13:16,949 INFO L175 Difference]: Start difference. First operand has 183 places, 228 transitions, 3827 flow. Second operand 15 states and 1381 transitions. [2023-08-27 07:13:16,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 392 transitions, 6684 flow [2023-08-27 07:13:17,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 392 transitions, 6662 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-27 07:13:17,075 INFO L231 Difference]: Finished difference. Result has 195 places, 242 transitions, 4464 flow [2023-08-27 07:13:17,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=3811, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4464, PETRI_PLACES=195, PETRI_TRANSITIONS=242} [2023-08-27 07:13:17,076 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 154 predicate places. [2023-08-27 07:13:17,079 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 242 transitions, 4464 flow [2023-08-27 07:13:17,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 84.34482758620689) internal successors, (2446), 29 states have internal predecessors, (2446), 0 states have call successors, (0), 0 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 07:13:17,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:17,081 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:17,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-08-27 07:13:17,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:17,286 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:17,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:17,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1571553552, now seen corresponding path program 2 times [2023-08-27 07:13:17,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:17,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152181982] [2023-08-27 07:13:17,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:17,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:17,634 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 07:13:17,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:17,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152181982] [2023-08-27 07:13:17,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152181982] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:17,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447260249] [2023-08-27 07:13:17,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:13:17,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:17,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:17,636 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:17,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-27 07:13:17,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 07:13:17,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:17,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-27 07:13:17,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:17,833 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 07:13:17,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:17,857 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 16 treesize of output 18 [2023-08-27 07:13:17,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:17,882 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 16 treesize of output 18 [2023-08-27 07:13:17,923 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 07:13:17,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:17,975 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_888 (Array Int Int))) (< 0 (+ 9223372039002259456 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_888) c_~A~0.base) (+ c_~A~0.offset 8))))) is different from false [2023-08-27 07:13:18,013 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:18,014 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 29 treesize of output 30 [2023-08-27 07:13:18,019 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:18,019 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 75 [2023-08-27 07:13:18,021 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-27 07:13:18,024 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-08-27 07:13:18,103 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 07:13:18,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447260249] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:18,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:18,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-08-27 07:13:18,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028898289] [2023-08-27 07:13:18,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:18,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 07:13:18,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:18,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 07:13:18,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=570, Unknown=2, NotChecked=48, Total=702 [2023-08-27 07:13:18,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 07:13:18,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 242 transitions, 4464 flow. Second operand has 27 states, 27 states have (on average 84.37037037037037) internal successors, (2278), 27 states have internal predecessors, (2278), 0 states have call successors, (0), 0 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 07:13:18,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:18,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 07:13:18,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:19,507 INFO L124 PetriNetUnfolderBase]: 2890/4856 cut-off events. [2023-08-27 07:13:19,507 INFO L125 PetriNetUnfolderBase]: For 98443/98864 co-relation queries the response was YES. [2023-08-27 07:13:19,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40251 conditions, 4856 events. 2890/4856 cut-off events. For 98443/98864 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 28843 event pairs, 757 based on Foata normal form. 507/5217 useless extension candidates. Maximal degree in co-relation 40192. Up to 1526 conditions per place. [2023-08-27 07:13:19,544 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 278 selfloop transitions, 109 changer transitions 0/390 dead transitions. [2023-08-27 07:13:19,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 390 transitions, 6959 flow [2023-08-27 07:13:19,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 07:13:19,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 07:13:19,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1378 transitions. [2023-08-27 07:13:19,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34536340852130326 [2023-08-27 07:13:19,546 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1378 transitions. [2023-08-27 07:13:19,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1378 transitions. [2023-08-27 07:13:19,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:19,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1378 transitions. [2023-08-27 07:13:19,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 91.86666666666666) internal successors, (1378), 15 states have internal predecessors, (1378), 0 states have call successors, (0), 0 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 07:13:19,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 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 07:13:19,550 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 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 07:13:19,550 INFO L175 Difference]: Start difference. First operand has 195 places, 242 transitions, 4464 flow. Second operand 15 states and 1378 transitions. [2023-08-27 07:13:19,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 390 transitions, 6959 flow [2023-08-27 07:13:19,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 390 transitions, 6801 flow, removed 19 selfloop flow, removed 8 redundant places. [2023-08-27 07:13:19,739 INFO L231 Difference]: Finished difference. Result has 201 places, 240 transitions, 4487 flow [2023-08-27 07:13:19,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=4269, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4487, PETRI_PLACES=201, PETRI_TRANSITIONS=240} [2023-08-27 07:13:19,740 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 160 predicate places. [2023-08-27 07:13:19,740 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 240 transitions, 4487 flow [2023-08-27 07:13:19,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 84.37037037037037) internal successors, (2278), 27 states have internal predecessors, (2278), 0 states have call successors, (0), 0 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 07:13:19,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:19,740 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:19,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:19,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:19,945 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:19,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:19,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2025795034, now seen corresponding path program 3 times [2023-08-27 07:13:19,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:19,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450637587] [2023-08-27 07:13:19,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:19,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:20,037 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:20,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:20,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450637587] [2023-08-27 07:13:20,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450637587] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:20,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499630664] [2023-08-27 07:13:20,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 07:13:20,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:20,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:20,053 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:20,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-27 07:13:20,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 07:13:20,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:20,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 07:13:20,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:20,342 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:20,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:20,417 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:20,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499630664] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:20,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:20,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-27 07:13:20,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97843603] [2023-08-27 07:13:20,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:20,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 07:13:20,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:20,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 07:13:20,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2023-08-27 07:13:20,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 07:13:20,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 240 transitions, 4487 flow. Second operand has 24 states, 24 states have (on average 92.54166666666667) internal successors, (2221), 24 states have internal predecessors, (2221), 0 states have call successors, (0), 0 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 07:13:20,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:20,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 07:13:20,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:21,271 INFO L124 PetriNetUnfolderBase]: 3087/5224 cut-off events. [2023-08-27 07:13:21,271 INFO L125 PetriNetUnfolderBase]: For 107873/108353 co-relation queries the response was YES. [2023-08-27 07:13:21,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42282 conditions, 5224 events. 3087/5224 cut-off events. For 107873/108353 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 32015 event pairs, 1164 based on Foata normal form. 772/5830 useless extension candidates. Maximal degree in co-relation 42225. Up to 2391 conditions per place. [2023-08-27 07:13:21,313 INFO L140 encePairwiseOnDemand]: 257/266 looper letters, 289 selfloop transitions, 76 changer transitions 0/368 dead transitions. [2023-08-27 07:13:21,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 368 transitions, 6854 flow [2023-08-27 07:13:21,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 07:13:21,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 07:13:21,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1103 transitions. [2023-08-27 07:13:21,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37696514012303484 [2023-08-27 07:13:21,315 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1103 transitions. [2023-08-27 07:13:21,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1103 transitions. [2023-08-27 07:13:21,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:21,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1103 transitions. [2023-08-27 07:13:21,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 100.27272727272727) internal successors, (1103), 11 states have internal predecessors, (1103), 0 states have call successors, (0), 0 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 07:13:21,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 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 07:13:21,318 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 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 07:13:21,318 INFO L175 Difference]: Start difference. First operand has 201 places, 240 transitions, 4487 flow. Second operand 11 states and 1103 transitions. [2023-08-27 07:13:21,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 368 transitions, 6854 flow [2023-08-27 07:13:21,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 368 transitions, 6628 flow, removed 18 selfloop flow, removed 13 redundant places. [2023-08-27 07:13:21,517 INFO L231 Difference]: Finished difference. Result has 201 places, 238 transitions, 4555 flow [2023-08-27 07:13:21,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=3889, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4555, PETRI_PLACES=201, PETRI_TRANSITIONS=238} [2023-08-27 07:13:21,518 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 160 predicate places. [2023-08-27 07:13:21,518 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 238 transitions, 4555 flow [2023-08-27 07:13:21,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 92.54166666666667) internal successors, (2221), 24 states have internal predecessors, (2221), 0 states have call successors, (0), 0 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 07:13:21,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:21,519 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:21,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:21,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:21,724 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:21,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:21,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1211072928, now seen corresponding path program 2 times [2023-08-27 07:13:21,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:21,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837608165] [2023-08-27 07:13:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:21,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:21,960 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 07:13:21,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:21,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837608165] [2023-08-27 07:13:21,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837608165] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:21,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352445764] [2023-08-27 07:13:21,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:13:21,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:21,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:21,973 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:22,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-27 07:13:22,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 07:13:22,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:22,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-27 07:13:22,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:22,229 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 15 treesize of output 11 [2023-08-27 07:13:22,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:22,273 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 22 [2023-08-27 07:13:22,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:22,307 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 22 [2023-08-27 07:13:22,420 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:22,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:22,534 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_968 (Array Int Int)) (|v_thread2Thread1of1ForFork0_~i~1#1_91| Int)) (or (<= c_~N~0 |v_thread2Thread1of1ForFork0_~i~1#1_91|) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_968) c_~A~0.base) (+ c_~A~0.offset (* |v_thread2Thread1of1ForFork0_~i~1#1_91| 4))) 4294967296)) (< |v_thread2Thread1of1ForFork0_~i~1#1_91| 2))) is different from false [2023-08-27 07:13:22,584 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:22,584 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 31 treesize of output 32 [2023-08-27 07:13:22,590 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:22,590 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 81 [2023-08-27 07:13:22,593 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 56 [2023-08-27 07:13:22,597 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2023-08-27 07:13:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:22,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352445764] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:22,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:22,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-08-27 07:13:22,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883844749] [2023-08-27 07:13:22,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:22,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 07:13:22,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:22,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 07:13:22,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=664, Unknown=1, NotChecked=52, Total=812 [2023-08-27 07:13:22,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 266 [2023-08-27 07:13:22,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 238 transitions, 4555 flow. Second operand has 29 states, 29 states have (on average 75.44827586206897) internal successors, (2188), 29 states have internal predecessors, (2188), 0 states have call successors, (0), 0 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 07:13:22,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:22,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 266 [2023-08-27 07:13:22,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:27,184 INFO L124 PetriNetUnfolderBase]: 5714/9298 cut-off events. [2023-08-27 07:13:27,184 INFO L125 PetriNetUnfolderBase]: For 186770/187096 co-relation queries the response was YES. [2023-08-27 07:13:27,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76327 conditions, 9298 events. 5714/9298 cut-off events. For 186770/187096 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 58441 event pairs, 668 based on Foata normal form. 694/9672 useless extension candidates. Maximal degree in co-relation 76266. Up to 2950 conditions per place. [2023-08-27 07:13:27,375 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 860 selfloop transitions, 82 changer transitions 2/953 dead transitions. [2023-08-27 07:13:27,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 953 transitions, 20901 flow [2023-08-27 07:13:27,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-27 07:13:27,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-27 07:13:27,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3076 transitions. [2023-08-27 07:13:27,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125381020117862 [2023-08-27 07:13:27,411 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3076 transitions. [2023-08-27 07:13:27,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3076 transitions. [2023-08-27 07:13:27,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:27,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3076 transitions. [2023-08-27 07:13:27,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 83.13513513513513) internal successors, (3076), 37 states have internal predecessors, (3076), 0 states have call successors, (0), 0 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 07:13:27,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 266.0) internal successors, (10108), 38 states have internal predecessors, (10108), 0 states have call successors, (0), 0 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 07:13:27,420 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 266.0) internal successors, (10108), 38 states have internal predecessors, (10108), 0 states have call successors, (0), 0 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 07:13:27,421 INFO L175 Difference]: Start difference. First operand has 201 places, 238 transitions, 4555 flow. Second operand 37 states and 3076 transitions. [2023-08-27 07:13:27,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 953 transitions, 20901 flow [2023-08-27 07:13:27,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 953 transitions, 20744 flow, removed 72 selfloop flow, removed 5 redundant places. [2023-08-27 07:13:27,883 INFO L231 Difference]: Finished difference. Result has 238 places, 281 transitions, 5339 flow [2023-08-27 07:13:27,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=4524, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5339, PETRI_PLACES=238, PETRI_TRANSITIONS=281} [2023-08-27 07:13:27,884 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 197 predicate places. [2023-08-27 07:13:27,884 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 281 transitions, 5339 flow [2023-08-27 07:13:27,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 75.44827586206897) internal successors, (2188), 29 states have internal predecessors, (2188), 0 states have call successors, (0), 0 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 07:13:27,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:27,884 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:27,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-08-27 07:13:28,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-08-27 07:13:28,089 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:28,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:28,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1211072927, now seen corresponding path program 4 times [2023-08-27 07:13:28,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:28,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544280560] [2023-08-27 07:13:28,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:28,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:28,316 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 07:13:28,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:28,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544280560] [2023-08-27 07:13:28,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544280560] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:28,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053760468] [2023-08-27 07:13:28,316 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 07:13:28,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:28,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:28,317 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:28,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-27 07:13:28,443 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 07:13:28,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:28,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 07:13:28,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:28,499 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 13 treesize of output 9 [2023-08-27 07:13:28,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:28,523 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 16 treesize of output 18 [2023-08-27 07:13:28,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:28,544 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 16 treesize of output 18 [2023-08-27 07:13:28,614 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 07:13:28,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:28,683 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1010 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1010) c_~A~0.base) (+ c_~A~0.offset 8)) 9223372039002259456)) is different from false [2023-08-27 07:13:28,738 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:28,739 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 27 treesize of output 28 [2023-08-27 07:13:28,744 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:28,744 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 129 [2023-08-27 07:13:28,748 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-08-27 07:13:28,751 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-08-27 07:13:28,830 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 07:13:28,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053760468] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:28,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:28,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-08-27 07:13:28,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207116021] [2023-08-27 07:13:28,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:28,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 07:13:28,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:28,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 07:13:28,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=667, Unknown=6, NotChecked=52, Total=812 [2023-08-27 07:13:28,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 07:13:28,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 281 transitions, 5339 flow. Second operand has 29 states, 29 states have (on average 84.44827586206897) internal successors, (2449), 29 states have internal predecessors, (2449), 0 states have call successors, (0), 0 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 07:13:28,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:28,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 07:13:28,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:31,010 INFO L124 PetriNetUnfolderBase]: 5137/8471 cut-off events. [2023-08-27 07:13:31,010 INFO L125 PetriNetUnfolderBase]: For 198335/198616 co-relation queries the response was YES. [2023-08-27 07:13:31,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74696 conditions, 8471 events. 5137/8471 cut-off events. For 198335/198616 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 52841 event pairs, 955 based on Foata normal form. 887/9352 useless extension candidates. Maximal degree in co-relation 74629. Up to 3078 conditions per place. [2023-08-27 07:13:31,075 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 527 selfloop transitions, 74 changer transitions 0/610 dead transitions. [2023-08-27 07:13:31,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 610 transitions, 13885 flow [2023-08-27 07:13:31,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 07:13:31,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 07:13:31,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1379 transitions. [2023-08-27 07:13:31,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3456140350877193 [2023-08-27 07:13:31,077 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1379 transitions. [2023-08-27 07:13:31,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1379 transitions. [2023-08-27 07:13:31,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:31,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1379 transitions. [2023-08-27 07:13:31,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 91.93333333333334) internal successors, (1379), 15 states have internal predecessors, (1379), 0 states have call successors, (0), 0 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 07:13:31,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 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 07:13:31,081 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 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 07:13:31,081 INFO L175 Difference]: Start difference. First operand has 238 places, 281 transitions, 5339 flow. Second operand 15 states and 1379 transitions. [2023-08-27 07:13:31,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 610 transitions, 13885 flow [2023-08-27 07:13:31,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 610 transitions, 13423 flow, removed 51 selfloop flow, removed 20 redundant places. [2023-08-27 07:13:31,628 INFO L231 Difference]: Finished difference. Result has 234 places, 283 transitions, 5125 flow [2023-08-27 07:13:31,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=4877, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5125, PETRI_PLACES=234, PETRI_TRANSITIONS=283} [2023-08-27 07:13:31,629 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 193 predicate places. [2023-08-27 07:13:31,630 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 283 transitions, 5125 flow [2023-08-27 07:13:31,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 84.44827586206897) internal successors, (2449), 29 states have internal predecessors, (2449), 0 states have call successors, (0), 0 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 07:13:31,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:31,630 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 07:13:31,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:31,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-08-27 07:13:31,833 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:31,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:31,833 INFO L85 PathProgramCache]: Analyzing trace with hash -832653735, now seen corresponding path program 5 times [2023-08-27 07:13:31,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:31,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105668220] [2023-08-27 07:13:31,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:31,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:32,107 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 07:13:32,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:32,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105668220] [2023-08-27 07:13:32,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105668220] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:32,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839570723] [2023-08-27 07:13:32,108 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 07:13:32,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:32,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:32,109 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:32,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-27 07:13:32,275 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-27 07:13:32,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:32,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-27 07:13:32,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:32,370 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 07:13:32,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:32,395 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 16 treesize of output 18 [2023-08-27 07:13:32,486 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 07:13:32,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:32,610 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:32,611 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 26 treesize of output 27 [2023-08-27 07:13:32,618 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:32,618 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2023-08-27 07:13:32,621 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-08-27 07:13:32,698 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 07:13:32,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839570723] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:32,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:32,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-27 07:13:32,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566678610] [2023-08-27 07:13:32,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:32,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 07:13:32,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:32,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 07:13:32,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=778, Unknown=1, NotChecked=0, Total=870 [2023-08-27 07:13:32,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 07:13:32,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 283 transitions, 5125 flow. Second operand has 30 states, 30 states have (on average 87.4) internal successors, (2622), 30 states have internal predecessors, (2622), 0 states have call successors, (0), 0 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 07:13:32,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:32,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 07:13:32,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:34,396 INFO L124 PetriNetUnfolderBase]: 5021/8269 cut-off events. [2023-08-27 07:13:34,397 INFO L125 PetriNetUnfolderBase]: For 166584/167006 co-relation queries the response was YES. [2023-08-27 07:13:34,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68314 conditions, 8269 events. 5021/8269 cut-off events. For 166584/167006 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 51779 event pairs, 1625 based on Foata normal form. 428/8621 useless extension candidates. Maximal degree in co-relation 68250. Up to 5896 conditions per place. [2023-08-27 07:13:34,532 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 249 selfloop transitions, 123 changer transitions 0/377 dead transitions. [2023-08-27 07:13:34,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 377 transitions, 7263 flow [2023-08-27 07:13:34,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 07:13:34,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 07:13:34,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1629 transitions. [2023-08-27 07:13:34,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34022556390977443 [2023-08-27 07:13:34,534 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1629 transitions. [2023-08-27 07:13:34,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1629 transitions. [2023-08-27 07:13:34,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:34,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1629 transitions. [2023-08-27 07:13:34,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 90.5) internal successors, (1629), 18 states have internal predecessors, (1629), 0 states have call successors, (0), 0 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 07:13:34,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 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 07:13:34,539 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 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 07:13:34,539 INFO L175 Difference]: Start difference. First operand has 234 places, 283 transitions, 5125 flow. Second operand 18 states and 1629 transitions. [2023-08-27 07:13:34,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 377 transitions, 7263 flow [2023-08-27 07:13:34,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 377 transitions, 7099 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-08-27 07:13:34,847 INFO L231 Difference]: Finished difference. Result has 243 places, 297 transitions, 5592 flow [2023-08-27 07:13:34,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=5027, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5592, PETRI_PLACES=243, PETRI_TRANSITIONS=297} [2023-08-27 07:13:34,848 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2023-08-27 07:13:34,848 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 297 transitions, 5592 flow [2023-08-27 07:13:34,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 87.4) internal successors, (2622), 30 states have internal predecessors, (2622), 0 states have call successors, (0), 0 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 07:13:34,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:34,848 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:34,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:35,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-08-27 07:13:35,054 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:35,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:35,054 INFO L85 PathProgramCache]: Analyzing trace with hash -95027486, now seen corresponding path program 5 times [2023-08-27 07:13:35,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:35,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125456216] [2023-08-27 07:13:35,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:35,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:35,188 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:35,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:35,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125456216] [2023-08-27 07:13:35,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125456216] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:35,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216044281] [2023-08-27 07:13:35,189 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 07:13:35,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:35,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:35,205 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:35,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-27 07:13:35,358 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-27 07:13:35,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:35,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 07:13:35,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:35,459 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:35,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:35,534 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:35,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216044281] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:35,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:35,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-27 07:13:35,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821304819] [2023-08-27 07:13:35,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:35,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 07:13:35,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:35,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 07:13:35,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2023-08-27 07:13:35,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 07:13:35,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 297 transitions, 5592 flow. Second operand has 24 states, 24 states have (on average 92.54166666666667) internal successors, (2221), 24 states have internal predecessors, (2221), 0 states have call successors, (0), 0 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 07:13:35,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:35,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 07:13:35,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:36,966 INFO L124 PetriNetUnfolderBase]: 4794/7963 cut-off events. [2023-08-27 07:13:36,966 INFO L125 PetriNetUnfolderBase]: For 166201/166347 co-relation queries the response was YES. [2023-08-27 07:13:36,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65910 conditions, 7963 events. 4794/7963 cut-off events. For 166201/166347 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 48789 event pairs, 2017 based on Foata normal form. 278/8237 useless extension candidates. Maximal degree in co-relation 65844. Up to 5512 conditions per place. [2023-08-27 07:13:37,025 INFO L140 encePairwiseOnDemand]: 258/266 looper letters, 405 selfloop transitions, 35 changer transitions 0/449 dead transitions. [2023-08-27 07:13:37,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 449 transitions, 9821 flow [2023-08-27 07:13:37,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 07:13:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 07:13:37,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1082 transitions. [2023-08-27 07:13:37,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697881066302119 [2023-08-27 07:13:37,028 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1082 transitions. [2023-08-27 07:13:37,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1082 transitions. [2023-08-27 07:13:37,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:37,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1082 transitions. [2023-08-27 07:13:37,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 98.36363636363636) internal successors, (1082), 11 states have internal predecessors, (1082), 0 states have call successors, (0), 0 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 07:13:37,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 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 07:13:37,030 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 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 07:13:37,031 INFO L175 Difference]: Start difference. First operand has 243 places, 297 transitions, 5592 flow. Second operand 11 states and 1082 transitions. [2023-08-27 07:13:37,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 449 transitions, 9821 flow [2023-08-27 07:13:37,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 449 transitions, 9738 flow, removed 13 selfloop flow, removed 10 redundant places. [2023-08-27 07:13:37,456 INFO L231 Difference]: Finished difference. Result has 243 places, 293 transitions, 5523 flow [2023-08-27 07:13:37,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=5453, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5523, PETRI_PLACES=243, PETRI_TRANSITIONS=293} [2023-08-27 07:13:37,456 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2023-08-27 07:13:37,456 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 293 transitions, 5523 flow [2023-08-27 07:13:37,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 92.54166666666667) internal successors, (2221), 24 states have internal predecessors, (2221), 0 states have call successors, (0), 0 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 07:13:37,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:37,457 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 07:13:37,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-08-27 07:13:37,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:37,662 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:37,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:37,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1150682375, now seen corresponding path program 3 times [2023-08-27 07:13:37,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:37,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917032988] [2023-08-27 07:13:37,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:37,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:37,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:37,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917032988] [2023-08-27 07:13:37,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917032988] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:37,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573361148] [2023-08-27 07:13:37,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 07:13:37,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:37,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:37,943 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:37,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-27 07:13:38,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 07:13:38,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:38,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 07:13:38,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:38,220 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 07:13:38,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:38,243 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 21 treesize of output 20 [2023-08-27 07:13:38,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:38,267 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 07:13:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:38,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:38,493 INFO L322 Elim1Store]: treesize reduction 21, result has 54.3 percent of original size [2023-08-27 07:13:38,493 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 2 case distinctions, treesize of input 31 treesize of output 37 [2023-08-27 07:13:38,498 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:38,498 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2023-08-27 07:13:38,508 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-27 07:13:38,579 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:38,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573361148] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:38,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:38,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-27 07:13:38,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983817069] [2023-08-27 07:13:38,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:38,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-27 07:13:38,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:38,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-27 07:13:38,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=944, Unknown=6, NotChecked=0, Total=1056 [2023-08-27 07:13:38,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 07:13:38,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 293 transitions, 5523 flow. Second operand has 33 states, 33 states have (on average 87.36363636363636) internal successors, (2883), 33 states have internal predecessors, (2883), 0 states have call successors, (0), 0 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 07:13:38,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:38,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 07:13:38,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:40,361 INFO L124 PetriNetUnfolderBase]: 4645/7696 cut-off events. [2023-08-27 07:13:40,361 INFO L125 PetriNetUnfolderBase]: For 159896/160306 co-relation queries the response was YES. [2023-08-27 07:13:40,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64582 conditions, 7696 events. 4645/7696 cut-off events. For 159896/160306 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 47741 event pairs, 1486 based on Foata normal form. 411/8029 useless extension candidates. Maximal degree in co-relation 64515. Up to 5458 conditions per place. [2023-08-27 07:13:40,414 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 239 selfloop transitions, 123 changer transitions 0/367 dead transitions. [2023-08-27 07:13:40,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 367 transitions, 7262 flow [2023-08-27 07:13:40,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 07:13:40,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 07:13:40,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1626 transitions. [2023-08-27 07:13:40,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33959899749373434 [2023-08-27 07:13:40,416 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1626 transitions. [2023-08-27 07:13:40,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1626 transitions. [2023-08-27 07:13:40,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:40,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1626 transitions. [2023-08-27 07:13:40,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 90.33333333333333) internal successors, (1626), 18 states have internal predecessors, (1626), 0 states have call successors, (0), 0 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 07:13:40,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 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 07:13:40,421 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 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 07:13:40,421 INFO L175 Difference]: Start difference. First operand has 243 places, 293 transitions, 5523 flow. Second operand 18 states and 1626 transitions. [2023-08-27 07:13:40,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 367 transitions, 7262 flow [2023-08-27 07:13:40,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 367 transitions, 7125 flow, removed 6 selfloop flow, removed 13 redundant places. [2023-08-27 07:13:40,768 INFO L231 Difference]: Finished difference. Result has 247 places, 291 transitions, 5641 flow [2023-08-27 07:13:40,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=5395, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5641, PETRI_PLACES=247, PETRI_TRANSITIONS=291} [2023-08-27 07:13:40,769 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 206 predicate places. [2023-08-27 07:13:40,769 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 291 transitions, 5641 flow [2023-08-27 07:13:40,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 87.36363636363636) internal successors, (2883), 33 states have internal predecessors, (2883), 0 states have call successors, (0), 0 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 07:13:40,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:40,769 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:40,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-08-27 07:13:40,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-27 07:13:40,974 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:40,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:40,975 INFO L85 PathProgramCache]: Analyzing trace with hash 208358928, now seen corresponding path program 3 times [2023-08-27 07:13:40,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:40,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284735058] [2023-08-27 07:13:40,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:40,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:41,314 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 07:13:41,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:41,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284735058] [2023-08-27 07:13:41,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284735058] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:41,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714956412] [2023-08-27 07:13:41,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 07:13:41,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:41,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:41,315 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:41,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-27 07:13:41,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 07:13:41,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:41,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 07:13:41,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:41,580 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 07:13:41,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:41,606 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 07:13:41,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:41,653 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 07:13:41,724 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 07:13:41,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:41,793 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1182 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1182) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 12)) 4294967296)) is different from false [2023-08-27 07:13:41,796 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1182 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1182) c_~A~0.base) (+ c_~A~0.offset 12)) 4294967296)) is different from false [2023-08-27 07:13:41,834 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:41,834 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 27 treesize of output 28 [2023-08-27 07:13:41,839 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:41,839 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-08-27 07:13:41,842 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-08-27 07:13:41,844 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-27 07:13:41,948 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 07:13:41,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714956412] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:41,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:41,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 32 [2023-08-27 07:13:41,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286396482] [2023-08-27 07:13:41,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:41,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-27 07:13:41,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:41,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-27 07:13:41,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=895, Unknown=6, NotChecked=122, Total=1122 [2023-08-27 07:13:41,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 07:13:41,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 291 transitions, 5641 flow. Second operand has 34 states, 34 states have (on average 84.38235294117646) internal successors, (2869), 34 states have internal predecessors, (2869), 0 states have call successors, (0), 0 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 07:13:41,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:41,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 07:13:41,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:44,092 INFO L124 PetriNetUnfolderBase]: 5314/8715 cut-off events. [2023-08-27 07:13:44,092 INFO L125 PetriNetUnfolderBase]: For 212137/212632 co-relation queries the response was YES. [2023-08-27 07:13:44,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74999 conditions, 8715 events. 5314/8715 cut-off events. For 212137/212632 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 53545 event pairs, 1336 based on Foata normal form. 891/9360 useless extension candidates. Maximal degree in co-relation 74934. Up to 2644 conditions per place. [2023-08-27 07:13:44,165 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 539 selfloop transitions, 120 changer transitions 0/664 dead transitions. [2023-08-27 07:13:44,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 664 transitions, 11907 flow [2023-08-27 07:13:44,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 07:13:44,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 07:13:44,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1655 transitions. [2023-08-27 07:13:44,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.345655806182122 [2023-08-27 07:13:44,169 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1655 transitions. [2023-08-27 07:13:44,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1655 transitions. [2023-08-27 07:13:44,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:44,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1655 transitions. [2023-08-27 07:13:44,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 91.94444444444444) internal successors, (1655), 18 states have internal predecessors, (1655), 0 states have call successors, (0), 0 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 07:13:44,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 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 07:13:44,174 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 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 07:13:44,174 INFO L175 Difference]: Start difference. First operand has 247 places, 291 transitions, 5641 flow. Second operand 18 states and 1655 transitions. [2023-08-27 07:13:44,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 664 transitions, 11907 flow [2023-08-27 07:13:44,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 664 transitions, 11813 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-08-27 07:13:44,589 INFO L231 Difference]: Finished difference. Result has 252 places, 302 transitions, 6149 flow [2023-08-27 07:13:44,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=5547, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6149, PETRI_PLACES=252, PETRI_TRANSITIONS=302} [2023-08-27 07:13:44,590 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 211 predicate places. [2023-08-27 07:13:44,590 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 302 transitions, 6149 flow [2023-08-27 07:13:44,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 84.38235294117646) internal successors, (2869), 34 states have internal predecessors, (2869), 0 states have call successors, (0), 0 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 07:13:44,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:44,590 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:44,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:44,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-27 07:13:44,795 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:44,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:44,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2066779134, now seen corresponding path program 4 times [2023-08-27 07:13:44,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:44,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755840845] [2023-08-27 07:13:44,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:44,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:45,172 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 07:13:45,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:45,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755840845] [2023-08-27 07:13:45,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755840845] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:45,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286860516] [2023-08-27 07:13:45,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 07:13:45,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:45,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:45,173 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:45,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-27 07:13:45,340 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 07:13:45,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:45,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 07:13:45,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:45,441 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 07:13:45,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:45,470 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 16 treesize of output 18 [2023-08-27 07:13:45,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:45,555 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 16 treesize of output 18 [2023-08-27 07:13:45,625 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 07:13:45,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:45,685 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1228 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1228) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 8)) 9223372039002259456))) is different from false [2023-08-27 07:13:45,750 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1228 (Array Int Int)) (v_ArrVal_1227 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1227) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1228) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2023-08-27 07:13:45,756 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:45,756 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 29 treesize of output 30 [2023-08-27 07:13:45,762 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:45,762 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 75 [2023-08-27 07:13:45,764 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-27 07:13:45,768 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-08-27 07:13:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-08-27 07:13:45,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286860516] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:45,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:45,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2023-08-27 07:13:45,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975356481] [2023-08-27 07:13:45,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:45,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-27 07:13:45,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:45,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-27 07:13:45,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=938, Unknown=17, NotChecked=126, Total=1190 [2023-08-27 07:13:45,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 07:13:45,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 302 transitions, 6149 flow. Second operand has 35 states, 35 states have (on average 84.37142857142857) internal successors, (2953), 35 states have internal predecessors, (2953), 0 states have call successors, (0), 0 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 07:13:45,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:45,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 07:13:45,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:48,112 INFO L124 PetriNetUnfolderBase]: 5153/8459 cut-off events. [2023-08-27 07:13:48,112 INFO L125 PetriNetUnfolderBase]: For 216751/217218 co-relation queries the response was YES. [2023-08-27 07:13:48,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75778 conditions, 8459 events. 5153/8459 cut-off events. For 216751/217218 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 51701 event pairs, 1260 based on Foata normal form. 563/8780 useless extension candidates. Maximal degree in co-relation 75710. Up to 2600 conditions per place. [2023-08-27 07:13:48,174 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 539 selfloop transitions, 119 changer transitions 0/663 dead transitions. [2023-08-27 07:13:48,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 663 transitions, 12092 flow [2023-08-27 07:13:48,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 07:13:48,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 07:13:48,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1652 transitions. [2023-08-27 07:13:48,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34502923976608185 [2023-08-27 07:13:48,176 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1652 transitions. [2023-08-27 07:13:48,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1652 transitions. [2023-08-27 07:13:48,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:48,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1652 transitions. [2023-08-27 07:13:48,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 91.77777777777777) internal successors, (1652), 18 states have internal predecessors, (1652), 0 states have call successors, (0), 0 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 07:13:48,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 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 07:13:48,180 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 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 07:13:48,180 INFO L175 Difference]: Start difference. First operand has 252 places, 302 transitions, 6149 flow. Second operand 18 states and 1652 transitions. [2023-08-27 07:13:48,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 663 transitions, 12092 flow [2023-08-27 07:13:48,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 663 transitions, 11564 flow, removed 32 selfloop flow, removed 13 redundant places. [2023-08-27 07:13:48,643 INFO L231 Difference]: Finished difference. Result has 256 places, 301 transitions, 5834 flow [2023-08-27 07:13:48,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=5596, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5834, PETRI_PLACES=256, PETRI_TRANSITIONS=301} [2023-08-27 07:13:48,644 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 215 predicate places. [2023-08-27 07:13:48,644 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 301 transitions, 5834 flow [2023-08-27 07:13:48,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 84.37142857142857) internal successors, (2953), 35 states have internal predecessors, (2953), 0 states have call successors, (0), 0 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 07:13:48,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:48,644 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1] [2023-08-27 07:13:48,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:48,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-27 07:13:48,850 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:48,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:48,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1316302045, now seen corresponding path program 6 times [2023-08-27 07:13:48,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:48,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619263387] [2023-08-27 07:13:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:48,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:48,967 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:48,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:48,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619263387] [2023-08-27 07:13:48,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619263387] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:48,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820924508] [2023-08-27 07:13:48,967 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 07:13:48,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:48,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:48,968 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:48,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-27 07:13:49,173 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-27 07:13:49,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:49,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 07:13:49,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:49,296 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:49,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:49,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820924508] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:49,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:49,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2023-08-27 07:13:49,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118781006] [2023-08-27 07:13:49,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:49,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 07:13:49,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:49,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 07:13:49,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2023-08-27 07:13:49,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 07:13:49,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 301 transitions, 5834 flow. Second operand has 29 states, 29 states have (on average 92.44827586206897) internal successors, (2681), 29 states have internal predecessors, (2681), 0 states have call successors, (0), 0 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 07:13:49,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:49,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 07:13:49,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:50,620 INFO L124 PetriNetUnfolderBase]: 4562/7535 cut-off events. [2023-08-27 07:13:50,621 INFO L125 PetriNetUnfolderBase]: For 172430/172810 co-relation queries the response was YES. [2023-08-27 07:13:50,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63785 conditions, 7535 events. 4562/7535 cut-off events. For 172430/172810 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 45583 event pairs, 1624 based on Foata normal form. 523/7844 useless extension candidates. Maximal degree in co-relation 63722. Up to 3241 conditions per place. [2023-08-27 07:13:50,678 INFO L140 encePairwiseOnDemand]: 257/266 looper letters, 400 selfloop transitions, 112 changer transitions 0/517 dead transitions. [2023-08-27 07:13:50,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 517 transitions, 9789 flow [2023-08-27 07:13:50,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 07:13:50,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 07:13:50,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1294 transitions. [2023-08-27 07:13:50,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3742047426257953 [2023-08-27 07:13:50,680 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1294 transitions. [2023-08-27 07:13:50,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1294 transitions. [2023-08-27 07:13:50,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:50,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1294 transitions. [2023-08-27 07:13:50,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 99.53846153846153) internal successors, (1294), 13 states have internal predecessors, (1294), 0 states have call successors, (0), 0 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 07:13:50,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 266.0) internal successors, (3724), 14 states have internal predecessors, (3724), 0 states have call successors, (0), 0 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 07:13:50,683 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 266.0) internal successors, (3724), 14 states have internal predecessors, (3724), 0 states have call successors, (0), 0 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 07:13:50,683 INFO L175 Difference]: Start difference. First operand has 256 places, 301 transitions, 5834 flow. Second operand 13 states and 1294 transitions. [2023-08-27 07:13:50,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 517 transitions, 9789 flow [2023-08-27 07:13:50,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 517 transitions, 9438 flow, removed 12 selfloop flow, removed 15 redundant places. [2023-08-27 07:13:50,979 INFO L231 Difference]: Finished difference. Result has 259 places, 320 transitions, 6553 flow [2023-08-27 07:13:50,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=5447, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6553, PETRI_PLACES=259, PETRI_TRANSITIONS=320} [2023-08-27 07:13:50,979 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 218 predicate places. [2023-08-27 07:13:50,979 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 320 transitions, 6553 flow [2023-08-27 07:13:50,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 92.44827586206897) internal successors, (2681), 29 states have internal predecessors, (2681), 0 states have call successors, (0), 0 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 07:13:50,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:50,980 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 07:13:50,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:51,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-27 07:13:51,185 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:51,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:51,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1025010259, now seen corresponding path program 1 times [2023-08-27 07:13:51,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:51,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099068223] [2023-08-27 07:13:51,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:51,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:51,227 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 07:13:51,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:51,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099068223] [2023-08-27 07:13:51,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099068223] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:51,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482037651] [2023-08-27 07:13:51,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:51,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:51,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:51,229 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:51,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-27 07:13:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:51,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 07:13:51,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:51,423 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 07:13:51,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:51,440 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 07:13:51,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482037651] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:51,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 07:13:51,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-27 07:13:51,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922590048] [2023-08-27 07:13:51,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:51,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:13:51,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:51,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:13:51,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-27 07:13:51,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 07:13:51,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 320 transitions, 6553 flow. Second operand has 5 states, 5 states have (on average 94.2) internal successors, (471), 5 states have internal predecessors, (471), 0 states have call successors, (0), 0 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 07:13:51,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:51,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 07:13:51,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:52,553 INFO L124 PetriNetUnfolderBase]: 4168/6765 cut-off events. [2023-08-27 07:13:52,553 INFO L125 PetriNetUnfolderBase]: For 164250/164545 co-relation queries the response was YES. [2023-08-27 07:13:52,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60292 conditions, 6765 events. 4168/6765 cut-off events. For 164250/164545 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 39328 event pairs, 996 based on Foata normal form. 401/6968 useless extension candidates. Maximal degree in co-relation 60223. Up to 3482 conditions per place. [2023-08-27 07:13:52,618 INFO L140 encePairwiseOnDemand]: 258/266 looper letters, 249 selfloop transitions, 123 changer transitions 0/377 dead transitions. [2023-08-27 07:13:52,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 377 transitions, 7861 flow [2023-08-27 07:13:52,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:13:52,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:13:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 494 transitions. [2023-08-27 07:13:52,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2023-08-27 07:13:52,620 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 494 transitions. [2023-08-27 07:13:52,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 494 transitions. [2023-08-27 07:13:52,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:52,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 494 transitions. [2023-08-27 07:13:52,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 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 07:13:52,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 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 07:13:52,622 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 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 07:13:52,622 INFO L175 Difference]: Start difference. First operand has 259 places, 320 transitions, 6553 flow. Second operand 5 states and 494 transitions. [2023-08-27 07:13:52,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 377 transitions, 7861 flow [2023-08-27 07:13:52,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 377 transitions, 7792 flow, removed 14 selfloop flow, removed 7 redundant places. [2023-08-27 07:13:52,938 INFO L231 Difference]: Finished difference. Result has 255 places, 308 transitions, 6455 flow [2023-08-27 07:13:52,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=6209, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6455, PETRI_PLACES=255, PETRI_TRANSITIONS=308} [2023-08-27 07:13:52,938 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2023-08-27 07:13:52,938 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 308 transitions, 6455 flow [2023-08-27 07:13:52,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.2) internal successors, (471), 5 states have internal predecessors, (471), 0 states have call successors, (0), 0 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 07:13:52,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:52,939 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:52,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:53,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-08-27 07:13:53,144 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:53,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:53,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1258849966, now seen corresponding path program 6 times [2023-08-27 07:13:53,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:53,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233440205] [2023-08-27 07:13:53,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:53,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:53,472 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 07:13:53,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:53,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233440205] [2023-08-27 07:13:53,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233440205] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:53,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487006129] [2023-08-27 07:13:53,473 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 07:13:53,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:53,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:53,474 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:53,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-27 07:13:53,648 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-27 07:13:53,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:53,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 07:13:53,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:53,738 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 07:13:53,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:53,763 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 07:13:53,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:53,788 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 07:13:53,863 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 07:13:53,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:53,979 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1342 (Array Int Int)) (v_ArrVal_1341 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1341) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1342) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456)) is different from false [2023-08-27 07:13:53,984 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:53,985 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 27 treesize of output 28 [2023-08-27 07:13:53,990 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:53,990 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-08-27 07:13:53,992 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-08-27 07:13:53,995 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-27 07:13:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-08-27 07:13:54,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487006129] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:54,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:54,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-27 07:13:54,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415543474] [2023-08-27 07:13:54,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:54,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-27 07:13:54,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:54,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-27 07:13:54,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=888, Unknown=6, NotChecked=60, Total=1056 [2023-08-27 07:13:54,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 07:13:54,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 308 transitions, 6455 flow. Second operand has 33 states, 33 states have (on average 84.45454545454545) internal successors, (2787), 33 states have internal predecessors, (2787), 0 states have call successors, (0), 0 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 07:13:54,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:54,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 07:13:54,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:56,124 INFO L124 PetriNetUnfolderBase]: 4919/7905 cut-off events. [2023-08-27 07:13:56,124 INFO L125 PetriNetUnfolderBase]: For 233631/233889 co-relation queries the response was YES. [2023-08-27 07:13:56,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72294 conditions, 7905 events. 4919/7905 cut-off events. For 233631/233889 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 44769 event pairs, 915 based on Foata normal form. 522/8291 useless extension candidates. Maximal degree in co-relation 72226. Up to 2416 conditions per place. [2023-08-27 07:13:56,199 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 668 selfloop transitions, 76 changer transitions 0/754 dead transitions. [2023-08-27 07:13:56,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 754 transitions, 19927 flow [2023-08-27 07:13:56,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 07:13:56,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 07:13:56,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1654 transitions. [2023-08-27 07:13:56,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3454469507101086 [2023-08-27 07:13:56,202 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1654 transitions. [2023-08-27 07:13:56,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1654 transitions. [2023-08-27 07:13:56,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:56,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1654 transitions. [2023-08-27 07:13:56,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 91.88888888888889) internal successors, (1654), 18 states have internal predecessors, (1654), 0 states have call successors, (0), 0 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 07:13:56,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 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 07:13:56,207 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 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 07:13:56,207 INFO L175 Difference]: Start difference. First operand has 255 places, 308 transitions, 6455 flow. Second operand 18 states and 1654 transitions. [2023-08-27 07:13:56,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 754 transitions, 19927 flow [2023-08-27 07:13:56,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 754 transitions, 19471 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-08-27 07:13:56,605 INFO L231 Difference]: Finished difference. Result has 270 places, 318 transitions, 6671 flow [2023-08-27 07:13:56,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=6310, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6671, PETRI_PLACES=270, PETRI_TRANSITIONS=318} [2023-08-27 07:13:56,606 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2023-08-27 07:13:56,606 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 318 transitions, 6671 flow [2023-08-27 07:13:56,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 84.45454545454545) internal successors, (2787), 33 states have internal predecessors, (2787), 0 states have call successors, (0), 0 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 07:13:56,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:56,607 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 07:13:56,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:56,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:56,812 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:56,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:56,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1547319278, now seen corresponding path program 1 times [2023-08-27 07:13:56,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:56,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169788627] [2023-08-27 07:13:56,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:56,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:56,852 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 07:13:56,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:56,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169788627] [2023-08-27 07:13:56,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169788627] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:56,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103777485] [2023-08-27 07:13:56,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:56,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:56,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:56,854 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:56,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-27 07:13:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:57,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 07:13:57,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:57,036 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 07:13:57,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:57,058 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 07:13:57,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103777485] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:57,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 07:13:57,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-27 07:13:57,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755357832] [2023-08-27 07:13:57,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:57,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:13:57,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:57,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:13:57,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-27 07:13:57,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 07:13:57,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 318 transitions, 6671 flow. Second operand has 5 states, 5 states have (on average 94.2) internal successors, (471), 5 states have internal predecessors, (471), 0 states have call successors, (0), 0 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 07:13:57,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:57,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 07:13:57,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:58,196 INFO L124 PetriNetUnfolderBase]: 4694/7522 cut-off events. [2023-08-27 07:13:58,196 INFO L125 PetriNetUnfolderBase]: For 222648/222886 co-relation queries the response was YES. [2023-08-27 07:13:58,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71561 conditions, 7522 events. 4694/7522 cut-off events. For 222648/222886 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 42112 event pairs, 774 based on Foata normal form. 386/7772 useless extension candidates. Maximal degree in co-relation 71492. Up to 3876 conditions per place. [2023-08-27 07:13:58,261 INFO L140 encePairwiseOnDemand]: 258/266 looper letters, 350 selfloop transitions, 58 changer transitions 0/418 dead transitions. [2023-08-27 07:13:58,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 418 transitions, 10334 flow [2023-08-27 07:13:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:13:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:13:58,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 494 transitions. [2023-08-27 07:13:58,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2023-08-27 07:13:58,263 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 494 transitions. [2023-08-27 07:13:58,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 494 transitions. [2023-08-27 07:13:58,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:58,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 494 transitions. [2023-08-27 07:13:58,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 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 07:13:58,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 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 07:13:58,264 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 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 07:13:58,264 INFO L175 Difference]: Start difference. First operand has 270 places, 318 transitions, 6671 flow. Second operand 5 states and 494 transitions. [2023-08-27 07:13:58,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 418 transitions, 10334 flow [2023-08-27 07:13:58,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 418 transitions, 10245 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-08-27 07:13:58,621 INFO L231 Difference]: Finished difference. Result has 261 places, 313 transitions, 6647 flow [2023-08-27 07:13:58,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=6531, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6647, PETRI_PLACES=261, PETRI_TRANSITIONS=313} [2023-08-27 07:13:58,621 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2023-08-27 07:13:58,621 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 313 transitions, 6647 flow [2023-08-27 07:13:58,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.2) internal successors, (471), 5 states have internal predecessors, (471), 0 states have call successors, (0), 0 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 07:13:58,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:58,622 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:58,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:58,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-08-27 07:13:58,827 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:13:58,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:58,827 INFO L85 PathProgramCache]: Analyzing trace with hash 279378019, now seen corresponding path program 3 times [2023-08-27 07:13:58,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:58,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543851591] [2023-08-27 07:13:58,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:58,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:59,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:59,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543851591] [2023-08-27 07:13:59,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543851591] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:59,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583618289] [2023-08-27 07:13:59,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 07:13:59,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:59,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:59,219 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:59,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-27 07:13:59,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 07:13:59,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:59,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 07:13:59,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:59,556 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 13 treesize of output 9 [2023-08-27 07:13:59,592 INFO L322 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-08-27 07:13:59,592 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2023-08-27 07:13:59,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:59,623 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 18 treesize of output 20 [2023-08-27 07:13:59,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:13:59,649 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 18 treesize of output 20 [2023-08-27 07:13:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:59,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:59,910 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1424 (Array Int Int)) (v_ArrVal_1423 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1423) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1424) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296))) is different from false [2023-08-27 07:13:59,975 INFO L322 Elim1Store]: treesize reduction 21, result has 54.3 percent of original size [2023-08-27 07:13:59,975 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 2 case distinctions, treesize of input 36 treesize of output 42 [2023-08-27 07:13:59,982 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:59,982 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 75 [2023-08-27 07:13:59,994 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-27 07:13:59,998 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-08-27 07:14:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2023-08-27 07:14:00,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583618289] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:14:00,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:14:00,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2023-08-27 07:14:00,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746015941] [2023-08-27 07:14:00,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:14:00,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-27 07:14:00,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:00,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-27 07:14:00,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1205, Unknown=15, NotChecked=70, Total=1406 [2023-08-27 07:14:00,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 07:14:00,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 313 transitions, 6647 flow. Second operand has 38 states, 38 states have (on average 84.42105263157895) internal successors, (3208), 38 states have internal predecessors, (3208), 0 states have call successors, (0), 0 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 07:14:00,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:00,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 07:14:00,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:02,722 INFO L124 PetriNetUnfolderBase]: 4569/7315 cut-off events. [2023-08-27 07:14:02,722 INFO L125 PetriNetUnfolderBase]: For 214893/215121 co-relation queries the response was YES. [2023-08-27 07:14:02,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69435 conditions, 7315 events. 4569/7315 cut-off events. For 214893/215121 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 40473 event pairs, 681 based on Foata normal form. 310/7489 useless extension candidates. Maximal degree in co-relation 69365. Up to 2304 conditions per place. [2023-08-27 07:14:02,786 INFO L140 encePairwiseOnDemand]: 257/266 looper letters, 678 selfloop transitions, 75 changer transitions 0/763 dead transitions. [2023-08-27 07:14:02,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 763 transitions, 20110 flow [2023-08-27 07:14:02,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 07:14:02,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 07:14:02,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1650 transitions. [2023-08-27 07:14:02,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34461152882205515 [2023-08-27 07:14:02,788 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1650 transitions. [2023-08-27 07:14:02,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1650 transitions. [2023-08-27 07:14:02,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:02,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1650 transitions. [2023-08-27 07:14:02,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 91.66666666666667) internal successors, (1650), 18 states have internal predecessors, (1650), 0 states have call successors, (0), 0 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 07:14:02,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 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 07:14:02,800 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 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 07:14:02,801 INFO L175 Difference]: Start difference. First operand has 261 places, 313 transitions, 6647 flow. Second operand 18 states and 1650 transitions. [2023-08-27 07:14:02,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 763 transitions, 20110 flow [2023-08-27 07:14:03,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 763 transitions, 20048 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 07:14:03,190 INFO L231 Difference]: Finished difference. Result has 275 places, 312 transitions, 6710 flow [2023-08-27 07:14:03,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=6560, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6710, PETRI_PLACES=275, PETRI_TRANSITIONS=312} [2023-08-27 07:14:03,190 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 234 predicate places. [2023-08-27 07:14:03,191 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 312 transitions, 6710 flow [2023-08-27 07:14:03,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 84.42105263157895) internal successors, (3208), 38 states have internal predecessors, (3208), 0 states have call successors, (0), 0 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 07:14:03,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:03,191 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1] [2023-08-27 07:14:03,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-08-27 07:14:03,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:03,396 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:14:03,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:03,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1999193303, now seen corresponding path program 7 times [2023-08-27 07:14:03,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:03,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109306995] [2023-08-27 07:14:03,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:03,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:14:03,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:03,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109306995] [2023-08-27 07:14:03,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109306995] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:14:03,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69999633] [2023-08-27 07:14:03,761 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 07:14:03,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:03,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:14:03,778 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:14:03,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-27 07:14:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:04,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-27 07:14:04,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:14:04,096 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 07:14:04,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:14:04,119 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 16 treesize of output 18 [2023-08-27 07:14:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:14:04,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:14:04,392 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1469 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1469) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 16 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2023-08-27 07:14:04,398 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:14:04,399 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 26 treesize of output 27 [2023-08-27 07:14:04,403 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:14:04,405 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2023-08-27 07:14:04,414 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-08-27 07:14:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2023-08-27 07:14:04,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69999633] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:14:04,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:14:04,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-08-27 07:14:04,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242074437] [2023-08-27 07:14:04,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:14:04,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-27 07:14:04,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:04,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-27 07:14:04,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1084, Unknown=1, NotChecked=66, Total=1260 [2023-08-27 07:14:04,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 07:14:04,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 312 transitions, 6710 flow. Second operand has 36 states, 36 states have (on average 87.41666666666667) internal successors, (3147), 36 states have internal predecessors, (3147), 0 states have call successors, (0), 0 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 07:14:04,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:04,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 07:14:04,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:06,414 INFO L124 PetriNetUnfolderBase]: 4485/7183 cut-off events. [2023-08-27 07:14:06,414 INFO L125 PetriNetUnfolderBase]: For 186202/186540 co-relation queries the response was YES. [2023-08-27 07:14:06,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69248 conditions, 7183 events. 4485/7183 cut-off events. For 186202/186540 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 40161 event pairs, 1180 based on Foata normal form. 341/7358 useless extension candidates. Maximal degree in co-relation 69178. Up to 5020 conditions per place. [2023-08-27 07:14:06,487 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 265 selfloop transitions, 130 changer transitions 0/400 dead transitions. [2023-08-27 07:14:06,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 400 transitions, 8983 flow [2023-08-27 07:14:06,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 07:14:06,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 07:14:06,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1893 transitions. [2023-08-27 07:14:06,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3388829215896885 [2023-08-27 07:14:06,490 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1893 transitions. [2023-08-27 07:14:06,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1893 transitions. [2023-08-27 07:14:06,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:06,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1893 transitions. [2023-08-27 07:14:06,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 90.14285714285714) internal successors, (1893), 21 states have internal predecessors, (1893), 0 states have call successors, (0), 0 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 07:14:06,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 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 07:14:06,494 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 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 07:14:06,494 INFO L175 Difference]: Start difference. First operand has 275 places, 312 transitions, 6710 flow. Second operand 21 states and 1893 transitions. [2023-08-27 07:14:06,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 400 transitions, 8983 flow [2023-08-27 07:14:06,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 400 transitions, 8785 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-08-27 07:14:06,880 INFO L231 Difference]: Finished difference. Result has 283 places, 320 transitions, 7060 flow [2023-08-27 07:14:06,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=6594, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7060, PETRI_PLACES=283, PETRI_TRANSITIONS=320} [2023-08-27 07:14:06,880 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 242 predicate places. [2023-08-27 07:14:06,880 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 320 transitions, 7060 flow [2023-08-27 07:14:06,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 87.41666666666667) internal successors, (3147), 36 states have internal predecessors, (3147), 0 states have call successors, (0), 0 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 07:14:06,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:06,881 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1] [2023-08-27 07:14:06,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-08-27 07:14:07,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-08-27 07:14:07,087 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:14:07,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:07,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1999193297, now seen corresponding path program 4 times [2023-08-27 07:14:07,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:07,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501114001] [2023-08-27 07:14:07,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:07,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:14:07,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:07,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501114001] [2023-08-27 07:14:07,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501114001] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:14:07,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049571924] [2023-08-27 07:14:07,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 07:14:07,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:07,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:14:07,395 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:14:07,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-27 07:14:07,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 07:14:07,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:14:07,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-27 07:14:07,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:14:07,670 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 07:14:07,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:14:07,694 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 07:14:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:14:07,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:14:07,935 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:14:07,935 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 24 treesize of output 25 [2023-08-27 07:14:07,939 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:14:07,940 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2023-08-27 07:14:07,948 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-27 07:14:08,047 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:14:08,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049571924] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:14:08,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:14:08,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-08-27 07:14:08,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655940752] [2023-08-27 07:14:08,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:14:08,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-27 07:14:08,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:08,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-27 07:14:08,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1146, Unknown=3, NotChecked=0, Total=1260 [2023-08-27 07:14:08,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 07:14:08,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 320 transitions, 7060 flow. Second operand has 36 states, 36 states have (on average 87.41666666666667) internal successors, (3147), 36 states have internal predecessors, (3147), 0 states have call successors, (0), 0 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 07:14:08,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:08,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 07:14:08,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:09,761 INFO L124 PetriNetUnfolderBase]: 4484/7182 cut-off events. [2023-08-27 07:14:09,761 INFO L125 PetriNetUnfolderBase]: For 189787/190119 co-relation queries the response was YES. [2023-08-27 07:14:09,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69512 conditions, 7182 events. 4484/7182 cut-off events. For 189787/190119 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 40034 event pairs, 1196 based on Foata normal form. 333/7348 useless extension candidates. Maximal degree in co-relation 69440. Up to 5019 conditions per place. [2023-08-27 07:14:09,824 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 264 selfloop transitions, 129 changer transitions 0/398 dead transitions. [2023-08-27 07:14:09,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 398 transitions, 9035 flow [2023-08-27 07:14:09,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 07:14:09,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 07:14:09,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1890 transitions. [2023-08-27 07:14:09,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3383458646616541 [2023-08-27 07:14:09,826 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1890 transitions. [2023-08-27 07:14:09,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1890 transitions. [2023-08-27 07:14:09,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:09,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1890 transitions. [2023-08-27 07:14:09,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 90.0) internal successors, (1890), 21 states have internal predecessors, (1890), 0 states have call successors, (0), 0 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 07:14:09,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 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 07:14:09,830 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 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 07:14:09,830 INFO L175 Difference]: Start difference. First operand has 283 places, 320 transitions, 7060 flow. Second operand 21 states and 1890 transitions. [2023-08-27 07:14:09,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 398 transitions, 9035 flow [2023-08-27 07:14:10,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 398 transitions, 8967 flow, removed 9 selfloop flow, removed 13 redundant places. [2023-08-27 07:14:10,210 INFO L231 Difference]: Finished difference. Result has 290 places, 318 transitions, 7206 flow [2023-08-27 07:14:10,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=6948, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7206, PETRI_PLACES=290, PETRI_TRANSITIONS=318} [2023-08-27 07:14:10,210 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 249 predicate places. [2023-08-27 07:14:10,210 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 318 transitions, 7206 flow [2023-08-27 07:14:10,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 87.41666666666667) internal successors, (3147), 36 states have internal predecessors, (3147), 0 states have call successors, (0), 0 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 07:14:10,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:10,211 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:10,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-27 07:14:10,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-08-27 07:14:10,416 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:14:10,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:10,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1425933263, now seen corresponding path program 7 times [2023-08-27 07:14:10,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:10,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070602895] [2023-08-27 07:14:10,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:10,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:10,538 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:14:10,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:10,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070602895] [2023-08-27 07:14:10,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070602895] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:14:10,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486127168] [2023-08-27 07:14:10,538 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 07:14:10,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:10,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:14:10,539 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:14:10,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-08-27 07:14:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:10,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 07:14:10,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:14:10,843 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:14:10,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:14:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:14:10,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486127168] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:14:10,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:14:10,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2023-08-27 07:14:10,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837076214] [2023-08-27 07:14:10,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:14:10,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 07:14:10,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:10,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 07:14:10,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2023-08-27 07:14:10,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 07:14:10,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 318 transitions, 7206 flow. Second operand has 29 states, 29 states have (on average 92.51724137931035) internal successors, (2683), 29 states have internal predecessors, (2683), 0 states have call successors, (0), 0 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 07:14:10,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:10,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 07:14:10,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:12,205 INFO L124 PetriNetUnfolderBase]: 4206/6754 cut-off events. [2023-08-27 07:14:12,206 INFO L125 PetriNetUnfolderBase]: For 206287/206515 co-relation queries the response was YES. [2023-08-27 07:14:12,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66268 conditions, 6754 events. 4206/6754 cut-off events. For 206287/206515 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 36594 event pairs, 1265 based on Foata normal form. 328/6996 useless extension candidates. Maximal degree in co-relation 66196. Up to 3412 conditions per place. [2023-08-27 07:14:12,268 INFO L140 encePairwiseOnDemand]: 258/266 looper letters, 499 selfloop transitions, 48 changer transitions 0/557 dead transitions. [2023-08-27 07:14:12,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 557 transitions, 14881 flow [2023-08-27 07:14:12,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 07:14:12,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 07:14:12,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1274 transitions. [2023-08-27 07:14:12,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3684210526315789 [2023-08-27 07:14:12,269 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1274 transitions. [2023-08-27 07:14:12,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1274 transitions. [2023-08-27 07:14:12,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:12,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1274 transitions. [2023-08-27 07:14:12,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 98.0) internal successors, (1274), 13 states have internal predecessors, (1274), 0 states have call successors, (0), 0 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 07:14:12,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 266.0) internal successors, (3724), 14 states have internal predecessors, (3724), 0 states have call successors, (0), 0 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 07:14:12,272 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 266.0) internal successors, (3724), 14 states have internal predecessors, (3724), 0 states have call successors, (0), 0 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 07:14:12,273 INFO L175 Difference]: Start difference. First operand has 290 places, 318 transitions, 7206 flow. Second operand 13 states and 1274 transitions. [2023-08-27 07:14:12,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 557 transitions, 14881 flow [2023-08-27 07:14:12,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 557 transitions, 14824 flow, removed 3 selfloop flow, removed 16 redundant places. [2023-08-27 07:14:12,606 INFO L231 Difference]: Finished difference. Result has 286 places, 314 transitions, 7166 flow [2023-08-27 07:14:12,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=7070, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7166, PETRI_PLACES=286, PETRI_TRANSITIONS=314} [2023-08-27 07:14:12,607 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 245 predicate places. [2023-08-27 07:14:12,607 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 314 transitions, 7166 flow [2023-08-27 07:14:12,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 92.51724137931035) internal successors, (2683), 29 states have internal predecessors, (2683), 0 states have call successors, (0), 0 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 07:14:12,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:12,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:12,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-08-27 07:14:12,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-08-27 07:14:12,813 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:14:12,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:12,813 INFO L85 PathProgramCache]: Analyzing trace with hash 25945373, now seen corresponding path program 1 times [2023-08-27 07:14:12,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:12,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934033203] [2023-08-27 07:14:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:12,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:13,133 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 07:14:13,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:13,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934033203] [2023-08-27 07:14:13,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934033203] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:14:13,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781599158] [2023-08-27 07:14:13,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:13,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:13,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:14:13,145 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:14:13,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-08-27 07:14:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:13,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-27 07:14:13,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:14:13,344 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 07:14:13,362 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 07:14:13,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:14:13,462 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 23 treesize of output 23 [2023-08-27 07:14:13,537 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 07:14:13,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:14:13,588 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1590 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1590) c_~A~0.base) c_~A~0.offset) c_~counter~0)) is different from false [2023-08-27 07:14:13,785 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:14:13,786 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 71 treesize of output 47 [2023-08-27 07:14:13,789 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 143 [2023-08-27 07:14:13,792 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2023-08-27 07:14:13,795 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2023-08-27 07:14:13,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 07:14:13,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781599158] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:14:13,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:14:13,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-08-27 07:14:13,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605992260] [2023-08-27 07:14:13,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:14:13,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 07:14:13,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:13,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 07:14:13,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=645, Unknown=6, NotChecked=52, Total=812 [2023-08-27 07:14:13,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 266 [2023-08-27 07:14:13,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 314 transitions, 7166 flow. Second operand has 29 states, 29 states have (on average 74.51724137931035) internal successors, (2161), 29 states have internal predecessors, (2161), 0 states have call successors, (0), 0 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 07:14:13,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:13,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 266 [2023-08-27 07:14:13,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:16,204 INFO L124 PetriNetUnfolderBase]: 6184/10136 cut-off events. [2023-08-27 07:14:16,204 INFO L125 PetriNetUnfolderBase]: For 276994/276994 co-relation queries the response was YES. [2023-08-27 07:14:16,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96332 conditions, 10136 events. 6184/10136 cut-off events. For 276994/276994 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 62182 event pairs, 886 based on Foata normal form. 9/10039 useless extension candidates. Maximal degree in co-relation 96260. Up to 6205 conditions per place. [2023-08-27 07:14:16,298 INFO L140 encePairwiseOnDemand]: 245/266 looper letters, 600 selfloop transitions, 343 changer transitions 15/958 dead transitions. [2023-08-27 07:14:16,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 958 transitions, 20628 flow [2023-08-27 07:14:16,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-27 07:14:16,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-27 07:14:16,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2269 transitions. [2023-08-27 07:14:16,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3046455424274973 [2023-08-27 07:14:16,301 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2269 transitions. [2023-08-27 07:14:16,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2269 transitions. [2023-08-27 07:14:16,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:16,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2269 transitions. [2023-08-27 07:14:16,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 81.03571428571429) internal successors, (2269), 28 states have internal predecessors, (2269), 0 states have call successors, (0), 0 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 07:14:16,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 266.0) internal successors, (7714), 29 states have internal predecessors, (7714), 0 states have call successors, (0), 0 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 07:14:16,307 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 266.0) internal successors, (7714), 29 states have internal predecessors, (7714), 0 states have call successors, (0), 0 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 07:14:16,307 INFO L175 Difference]: Start difference. First operand has 286 places, 314 transitions, 7166 flow. Second operand 28 states and 2269 transitions. [2023-08-27 07:14:16,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 958 transitions, 20628 flow [2023-08-27 07:14:16,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 958 transitions, 20251 flow, removed 18 selfloop flow, removed 9 redundant places. [2023-08-27 07:14:16,892 INFO L231 Difference]: Finished difference. Result has 319 places, 584 transitions, 14290 flow [2023-08-27 07:14:16,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=7078, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=14290, PETRI_PLACES=319, PETRI_TRANSITIONS=584} [2023-08-27 07:14:16,893 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 278 predicate places. [2023-08-27 07:14:16,893 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 584 transitions, 14290 flow [2023-08-27 07:14:16,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 74.51724137931035) internal successors, (2161), 29 states have internal predecessors, (2161), 0 states have call successors, (0), 0 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 07:14:16,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:16,893 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:16,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-08-27 07:14:17,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-08-27 07:14:17,098 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:14:17,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:17,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1805398820, now seen corresponding path program 5 times [2023-08-27 07:14:17,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:17,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293293557] [2023-08-27 07:14:17,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:17,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:17,429 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:14:17,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:17,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293293557] [2023-08-27 07:14:17,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293293557] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:14:17,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455654450] [2023-08-27 07:14:17,430 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 07:14:17,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:17,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:14:17,441 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:14:17,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-08-27 07:14:17,627 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-27 07:14:17,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:14:17,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-27 07:14:17,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:14:17,745 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 07:14:17,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:14:17,777 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 16 treesize of output 18 [2023-08-27 07:14:17,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:14:17,804 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 16 treesize of output 18 [2023-08-27 07:14:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:14:17,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:14:17,988 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1640 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1640) c_~A~0.base) (+ c_~A~0.offset 16)) 9223372039002259456))) is different from false [2023-08-27 07:14:18,014 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1640 (Array Int Int)) (v_ArrVal_1639 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1639) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1640) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 16 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2023-08-27 07:14:18,019 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:14:18,019 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 29 treesize of output 30 [2023-08-27 07:14:18,025 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:14:18,025 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-08-27 07:14:18,028 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-08-27 07:14:18,031 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-08-27 07:14:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2023-08-27 07:14:18,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455654450] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:14:18,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:14:18,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2023-08-27 07:14:18,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637957509] [2023-08-27 07:14:18,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:14:18,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-27 07:14:18,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-27 07:14:18,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1218, Unknown=2, NotChecked=142, Total=1482 [2023-08-27 07:14:18,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 07:14:18,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 584 transitions, 14290 flow. Second operand has 39 states, 39 states have (on average 84.41025641025641) internal successors, (3292), 39 states have internal predecessors, (3292), 0 states have call successors, (0), 0 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 07:14:18,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:18,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 07:14:18,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:21,723 INFO L124 PetriNetUnfolderBase]: 6525/10662 cut-off events. [2023-08-27 07:14:21,724 INFO L125 PetriNetUnfolderBase]: For 343917/344196 co-relation queries the response was YES. [2023-08-27 07:14:21,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112076 conditions, 10662 events. 6525/10662 cut-off events. For 343917/344196 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 65300 event pairs, 1446 based on Foata normal form. 402/10895 useless extension candidates. Maximal degree in co-relation 111989. Up to 4734 conditions per place. [2023-08-27 07:14:21,835 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 772 selfloop transitions, 222 changer transitions 0/1011 dead transitions. [2023-08-27 07:14:21,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 1011 transitions, 23773 flow [2023-08-27 07:14:21,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 07:14:21,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 07:14:21,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1928 transitions. [2023-08-27 07:14:21,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3451485857500895 [2023-08-27 07:14:21,838 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1928 transitions. [2023-08-27 07:14:21,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1928 transitions. [2023-08-27 07:14:21,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:21,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1928 transitions. [2023-08-27 07:14:21,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 91.80952380952381) internal successors, (1928), 21 states have internal predecessors, (1928), 0 states have call successors, (0), 0 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 07:14:21,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 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 07:14:21,842 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 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 07:14:21,842 INFO L175 Difference]: Start difference. First operand has 319 places, 584 transitions, 14290 flow. Second operand 21 states and 1928 transitions. [2023-08-27 07:14:21,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 1011 transitions, 23773 flow [2023-08-27 07:14:22,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1011 transitions, 22922 flow, removed 239 selfloop flow, removed 6 redundant places. [2023-08-27 07:14:22,799 INFO L231 Difference]: Finished difference. Result has 335 places, 605 transitions, 14822 flow [2023-08-27 07:14:22,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=13643, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=14822, PETRI_PLACES=335, PETRI_TRANSITIONS=605} [2023-08-27 07:14:22,800 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 294 predicate places. [2023-08-27 07:14:22,800 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 605 transitions, 14822 flow [2023-08-27 07:14:22,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 84.41025641025641) internal successors, (3292), 39 states have internal predecessors, (3292), 0 states have call successors, (0), 0 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 07:14:22,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:22,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:22,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-08-27 07:14:23,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-08-27 07:14:23,006 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:14:23,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:23,007 INFO L85 PathProgramCache]: Analyzing trace with hash 148884527, now seen corresponding path program 2 times [2023-08-27 07:14:23,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:23,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974127548] [2023-08-27 07:14:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:23,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:23,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:14:23,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:23,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974127548] [2023-08-27 07:14:23,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974127548] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:14:23,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16663657] [2023-08-27 07:14:23,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:14:23,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:23,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:14:23,313 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:14:23,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-08-27 07:14:23,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 07:14:23,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:14:23,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-27 07:14:23,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:14:23,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:14:23,607 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 23 treesize of output 23 [2023-08-27 07:14:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:14:23,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:14:23,801 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:14:23,802 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 82 [2023-08-27 07:14:23,805 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-08-27 07:14:23,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:14:23,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16663657] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:14:23,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:14:23,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-27 07:14:23,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700913355] [2023-08-27 07:14:23,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:14:23,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 07:14:23,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:23,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 07:14:23,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=558, Unknown=2, NotChecked=0, Total=650 [2023-08-27 07:14:23,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 266 [2023-08-27 07:14:23,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 605 transitions, 14822 flow. Second operand has 26 states, 26 states have (on average 83.76923076923077) internal successors, (2178), 26 states have internal predecessors, (2178), 0 states have call successors, (0), 0 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 07:14:23,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:23,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 266 [2023-08-27 07:14:23,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:26,934 INFO L124 PetriNetUnfolderBase]: 7570/12408 cut-off events. [2023-08-27 07:14:26,934 INFO L125 PetriNetUnfolderBase]: For 414271/414271 co-relation queries the response was YES. [2023-08-27 07:14:27,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132070 conditions, 12408 events. 7570/12408 cut-off events. For 414271/414271 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 78420 event pairs, 1500 based on Foata normal form. 9/12297 useless extension candidates. Maximal degree in co-relation 131983. Up to 8581 conditions per place. [2023-08-27 07:14:27,073 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 776 selfloop transitions, 274 changer transitions 11/1061 dead transitions. [2023-08-27 07:14:27,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 1061 transitions, 26769 flow [2023-08-27 07:14:27,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 07:14:27,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 07:14:27,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1899 transitions. [2023-08-27 07:14:27,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3399570354457572 [2023-08-27 07:14:27,076 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1899 transitions. [2023-08-27 07:14:27,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1899 transitions. [2023-08-27 07:14:27,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:27,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1899 transitions. [2023-08-27 07:14:27,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 90.42857142857143) internal successors, (1899), 21 states have internal predecessors, (1899), 0 states have call successors, (0), 0 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 07:14:27,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 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 07:14:27,080 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 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 07:14:27,080 INFO L175 Difference]: Start difference. First operand has 335 places, 605 transitions, 14822 flow. Second operand 21 states and 1899 transitions. [2023-08-27 07:14:27,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 1061 transitions, 26769 flow [2023-08-27 07:14:28,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 1061 transitions, 24896 flow, removed 105 selfloop flow, removed 15 redundant places. [2023-08-27 07:14:28,326 INFO L231 Difference]: Finished difference. Result has 350 places, 765 transitions, 18608 flow [2023-08-27 07:14:28,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=13703, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=18608, PETRI_PLACES=350, PETRI_TRANSITIONS=765} [2023-08-27 07:14:28,327 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 309 predicate places. [2023-08-27 07:14:28,327 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 765 transitions, 18608 flow [2023-08-27 07:14:28,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 83.76923076923077) internal successors, (2178), 26 states have internal predecessors, (2178), 0 states have call successors, (0), 0 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 07:14:28,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:28,327 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:28,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-08-27 07:14:28,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-08-27 07:14:28,533 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:14:28,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:28,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1929366426, now seen corresponding path program 4 times [2023-08-27 07:14:28,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:28,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314044388] [2023-08-27 07:14:28,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:28,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:14:28,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:28,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314044388] [2023-08-27 07:14:28,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314044388] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:14:28,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832269220] [2023-08-27 07:14:28,908 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 07:14:28,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:28,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:14:28,917 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:14:28,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-08-27 07:14:29,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 07:14:29,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:14:29,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-27 07:14:29,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:14:29,130 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-08-27 07:14:29,168 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 07:14:29,191 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 07:14:29,205 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 07:14:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:14:29,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:14:29,633 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1723 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1723) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 16)) 4294967296)) is different from false [2023-08-27 07:14:29,698 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:14:29,698 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 27 treesize of output 28 [2023-08-27 07:14:29,702 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:14:29,702 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-08-27 07:14:29,705 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-08-27 07:14:29,707 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2023-08-27 07:14:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:14:29,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832269220] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:14:29,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:14:29,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2023-08-27 07:14:29,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748898102] [2023-08-27 07:14:29,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:14:29,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-27 07:14:29,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:29,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-27 07:14:29,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=835, Unknown=14, NotChecked=58, Total=992 [2023-08-27 07:14:29,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 07:14:29,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 765 transitions, 18608 flow. Second operand has 32 states, 32 states have (on average 84.4375) internal successors, (2702), 32 states have internal predecessors, (2702), 0 states have call successors, (0), 0 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 07:14:29,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:29,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 07:14:29,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:33,833 INFO L124 PetriNetUnfolderBase]: 7309/12014 cut-off events. [2023-08-27 07:14:33,833 INFO L125 PetriNetUnfolderBase]: For 353491/353670 co-relation queries the response was YES. [2023-08-27 07:14:33,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123534 conditions, 12014 events. 7309/12014 cut-off events. For 353491/353670 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 76308 event pairs, 1631 based on Foata normal form. 164/12028 useless extension candidates. Maximal degree in co-relation 123443. Up to 5289 conditions per place. [2023-08-27 07:14:33,948 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 894 selfloop transitions, 294 changer transitions 0/1210 dead transitions. [2023-08-27 07:14:33,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 1210 transitions, 28420 flow [2023-08-27 07:14:33,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 07:14:33,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 07:14:33,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1925 transitions. [2023-08-27 07:14:33,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34461152882205515 [2023-08-27 07:14:33,950 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1925 transitions. [2023-08-27 07:14:33,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1925 transitions. [2023-08-27 07:14:33,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:33,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1925 transitions. [2023-08-27 07:14:33,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 91.66666666666667) internal successors, (1925), 21 states have internal predecessors, (1925), 0 states have call successors, (0), 0 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 07:14:33,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 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 07:14:33,955 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 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 07:14:33,955 INFO L175 Difference]: Start difference. First operand has 350 places, 765 transitions, 18608 flow. Second operand 21 states and 1925 transitions. [2023-08-27 07:14:33,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 1210 transitions, 28420 flow [2023-08-27 07:14:35,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 1210 transitions, 27757 flow, removed 260 selfloop flow, removed 5 redundant places. [2023-08-27 07:14:35,368 INFO L231 Difference]: Finished difference. Result has 365 places, 764 transitions, 18636 flow [2023-08-27 07:14:35,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=18048, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=18636, PETRI_PLACES=365, PETRI_TRANSITIONS=764} [2023-08-27 07:14:35,369 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2023-08-27 07:14:35,369 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 764 transitions, 18636 flow [2023-08-27 07:14:35,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 84.4375) internal successors, (2702), 32 states have internal predecessors, (2702), 0 states have call successors, (0), 0 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 07:14:35,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:35,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:35,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-08-27 07:14:35,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2023-08-27 07:14:35,575 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:14:35,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:35,575 INFO L85 PathProgramCache]: Analyzing trace with hash -822138425, now seen corresponding path program 3 times [2023-08-27 07:14:35,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:35,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161913348] [2023-08-27 07:14:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:35,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:35,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:14:35,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:35,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161913348] [2023-08-27 07:14:35,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161913348] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:14:35,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243577313] [2023-08-27 07:14:35,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 07:14:35,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:35,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:14:35,873 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:14:35,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-08-27 07:14:36,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 07:14:36,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:14:36,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 07:14:36,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:14:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:14:36,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:14:36,238 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:14:36,238 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 68 [2023-08-27 07:14:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:14:36,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243577313] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:14:36,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:14:36,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 15 [2023-08-27 07:14:36,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290143007] [2023-08-27 07:14:36,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:14:36,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 07:14:36,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:36,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 07:14:36,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-08-27 07:14:36,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 07:14:36,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 764 transitions, 18636 flow. Second operand has 17 states, 17 states have (on average 88.17647058823529) internal successors, (1499), 17 states have internal predecessors, (1499), 0 states have call successors, (0), 0 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 07:14:36,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:36,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 07:14:36,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:39,797 INFO L124 PetriNetUnfolderBase]: 8320/13701 cut-off events. [2023-08-27 07:14:39,797 INFO L125 PetriNetUnfolderBase]: For 410411/410411 co-relation queries the response was YES. [2023-08-27 07:14:39,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142362 conditions, 13701 events. 8320/13701 cut-off events. For 410411/410411 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 89409 event pairs, 1823 based on Foata normal form. 9/13588 useless extension candidates. Maximal degree in co-relation 142271. Up to 12104 conditions per place. [2023-08-27 07:14:39,920 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 880 selfloop transitions, 214 changer transitions 10/1104 dead transitions. [2023-08-27 07:14:39,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 1104 transitions, 28382 flow [2023-08-27 07:14:39,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 07:14:39,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 07:14:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1514 transitions. [2023-08-27 07:14:39,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3557330827067669 [2023-08-27 07:14:39,922 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1514 transitions. [2023-08-27 07:14:39,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1514 transitions. [2023-08-27 07:14:39,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:39,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1514 transitions. [2023-08-27 07:14:39,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.625) internal successors, (1514), 16 states have internal predecessors, (1514), 0 states have call successors, (0), 0 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 07:14:39,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 266.0) internal successors, (4522), 17 states have internal predecessors, (4522), 0 states have call successors, (0), 0 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 07:14:39,925 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 266.0) internal successors, (4522), 17 states have internal predecessors, (4522), 0 states have call successors, (0), 0 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 07:14:39,925 INFO L175 Difference]: Start difference. First operand has 365 places, 764 transitions, 18636 flow. Second operand 16 states and 1514 transitions. [2023-08-27 07:14:39,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 1104 transitions, 28382 flow [2023-08-27 07:14:41,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 1104 transitions, 27681 flow, removed 0 selfloop flow, removed 16 redundant places. [2023-08-27 07:14:41,286 INFO L231 Difference]: Finished difference. Result has 373 places, 906 transitions, 22649 flow [2023-08-27 07:14:41,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=18130, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=22649, PETRI_PLACES=373, PETRI_TRANSITIONS=906} [2023-08-27 07:14:41,287 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 332 predicate places. [2023-08-27 07:14:41,287 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 906 transitions, 22649 flow [2023-08-27 07:14:41,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 88.17647058823529) internal successors, (1499), 17 states have internal predecessors, (1499), 0 states have call successors, (0), 0 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 07:14:41,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:41,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:41,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-08-27 07:14:41,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:41,493 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:14:41,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:41,493 INFO L85 PathProgramCache]: Analyzing trace with hash 982205343, now seen corresponding path program 4 times [2023-08-27 07:14:41,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:41,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567175467] [2023-08-27 07:14:41,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:41,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 07:14:41,508 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 07:14:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 07:14:41,532 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 07:14:41,532 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 07:14:41,533 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (36 of 37 remaining) [2023-08-27 07:14:41,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 37 remaining) [2023-08-27 07:14:41,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 37 remaining) [2023-08-27 07:14:41,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 37 remaining) [2023-08-27 07:14:41,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 37 remaining) [2023-08-27 07:14:41,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 37 remaining) [2023-08-27 07:14:41,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 37 remaining) [2023-08-27 07:14:41,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 37 remaining) [2023-08-27 07:14:41,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 37 remaining) [2023-08-27 07:14:41,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 37 remaining) [2023-08-27 07:14:41,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 37 remaining) [2023-08-27 07:14:41,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 37 remaining) [2023-08-27 07:14:41,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 37 remaining) [2023-08-27 07:14:41,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 37 remaining) [2023-08-27 07:14:41,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 37 remaining) [2023-08-27 07:14:41,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 37 remaining) [2023-08-27 07:14:41,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 37 remaining) [2023-08-27 07:14:41,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 37 remaining) [2023-08-27 07:14:41,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 37 remaining) [2023-08-27 07:14:41,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 37 remaining) [2023-08-27 07:14:41,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 37 remaining) [2023-08-27 07:14:41,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 37 remaining) [2023-08-27 07:14:41,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 37 remaining) [2023-08-27 07:14:41,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 37 remaining) [2023-08-27 07:14:41,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 37 remaining) [2023-08-27 07:14:41,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 37 remaining) [2023-08-27 07:14:41,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 37 remaining) [2023-08-27 07:14:41,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 37 remaining) [2023-08-27 07:14:41,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 37 remaining) [2023-08-27 07:14:41,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 37 remaining) [2023-08-27 07:14:41,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 37 remaining) [2023-08-27 07:14:41,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 37 remaining) [2023-08-27 07:14:41,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 37 remaining) [2023-08-27 07:14:41,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 37 remaining) [2023-08-27 07:14:41,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 37 remaining) [2023-08-27 07:14:41,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 37 remaining) [2023-08-27 07:14:41,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 37 remaining) [2023-08-27 07:14:41,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-27 07:14:41,537 INFO L445 BasicCegarLoop]: Path program histogram: [7, 7, 5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:41,540 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 07:14:41,540 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 07:14:41,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 07:14:41 BasicIcfg [2023-08-27 07:14:41,565 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 07:14:41,565 INFO L158 Benchmark]: Toolchain (without parser) took 121767.20ms. Allocated memory was 333.4MB in the beginning and 5.9GB in the end (delta: 5.6GB). Free memory was 310.5MB in the beginning and 4.3GB in the end (delta: -4.0GB). Peak memory consumption was 1.6GB. Max. memory is 16.0GB. [2023-08-27 07:14:41,565 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 333.4MB. Free memory is still 310.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 07:14:41,565 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.18ms. Allocated memory is still 333.4MB. Free memory was 309.9MB in the beginning and 297.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 07:14:41,566 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.98ms. Allocated memory is still 333.4MB. Free memory was 297.4MB in the beginning and 295.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 07:14:41,566 INFO L158 Benchmark]: Boogie Preprocessor took 31.88ms. Allocated memory is still 333.4MB. Free memory was 295.3MB in the beginning and 293.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 07:14:41,566 INFO L158 Benchmark]: RCFGBuilder took 618.58ms. Allocated memory is still 333.4MB. Free memory was 293.7MB in the beginning and 296.7MB in the end (delta: -3.0MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. [2023-08-27 07:14:41,566 INFO L158 Benchmark]: TraceAbstraction took 120902.06ms. Allocated memory was 333.4MB in the beginning and 5.9GB in the end (delta: 5.6GB). Free memory was 296.5MB in the beginning and 4.3GB in the end (delta: -4.0GB). Peak memory consumption was 1.6GB. Max. memory is 16.0GB. [2023-08-27 07:14:41,566 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 333.4MB. Free memory is still 310.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 183.18ms. Allocated memory is still 333.4MB. Free memory was 309.9MB in the beginning and 297.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.98ms. Allocated memory is still 333.4MB. Free memory was 297.4MB in the beginning and 295.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.88ms. Allocated memory is still 333.4MB. Free memory was 295.3MB in the beginning and 293.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 618.58ms. Allocated memory is still 333.4MB. Free memory was 293.7MB in the beginning and 296.7MB in the end (delta: -3.0MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. * TraceAbstraction took 120902.06ms. Allocated memory was 333.4MB in the beginning and 5.9GB in the end (delta: 5.6GB). Free memory was 296.5MB in the beginning and 4.3GB in the end (delta: -4.0GB). Peak memory consumption was 1.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 126 PlacesBefore, 41 PlacesAfterwards, 128 TransitionsBefore, 37 TransitionsAfterwards, 1628 CoEnabledTransitionPairs, 7 FixpointIterations, 63 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 127 TotalNumberOfCompositions, 3190 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2181, independent: 2093, independent conditional: 0, independent unconditional: 2093, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 798, independent: 782, independent conditional: 0, independent unconditional: 782, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2181, independent: 1311, independent conditional: 0, independent unconditional: 1311, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 798, unknown conditional: 0, unknown unconditional: 798] , Statistics on independence cache: Total cache size (in pairs): 97, Positive cache size: 89, Positive conditional cache size: 0, Positive unconditional cache size: 89, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 21]: assertion can be violated assertion can be violated We found a FailurePath: [L41] 0 int* A; [L42] 0 int counter, N; [L75] 0 pthread_t t1, t2; [L77] 0 N = __VERIFIER_nondet_int() [L78] CALL, EXPR 0 create_fresh_int_array(N) [L93] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L93] RET 0 assume_abort_if_not(size >= 0) [L94] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L94] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L96] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L97] 0 int i = 0; VAL [A={0:0}, N=1, \old(size)=1, arr={-3:0}, counter=0, i=0, size=1] [L97] COND TRUE 0 i < size [L98] 0 arr[i] = __VERIFIER_nondet_int() [L97] 0 i++ VAL [A={0:0}, N=1, \old(size)=1, arr={-3:0}, counter=0, i=1, size=1] [L97] COND FALSE 0 !(i < size) [L100] 0 return arr; [L78] RET, EXPR 0 create_fresh_int_array(N) [L78] 0 A = create_fresh_int_array(N) [L81] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [A={-3:0}, N=1, counter=0, pthread_create(&t1, 0, thread1, 0)=-2, t1={5:0}, t2={3:0}] [L82] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [A={-3:0}, N=1, counter=0, pthread_create(&t2, 0, thread2, 0)=-1, t1={5:0}, t2={3:0}] [L62] 2 int i=0; VAL [A={-3:0}, N=1, counter=0, i=0] [L83] 0 \read(t1) VAL [A={-3:0}, N=1, \read(t1)=-2, counter=0, t1={5:0}, t2={3:0}] [L62] COND TRUE 2 i= b - 2147483648 [L104] CALL 2 assume_abort_if_not(b <= 0 || a >= b - 2147483648) [L38] COND FALSE 2 !(!cond) [L104] RET 2 assume_abort_if_not(b <= 0 || a >= b - 2147483648) [L105] EXPR 2 b >= 0 || a <= b + 2147483647 [L105] EXPR 2 b + 2147483647 [L105] EXPR 2 b >= 0 || a <= b + 2147483647 [L105] CALL 2 assume_abort_if_not(b >= 0 || a <= b + 2147483647) [L38] COND FALSE 2 !(!cond) [L105] RET 2 assume_abort_if_not(b >= 0 || a <= b + 2147483647) [L106] EXPR 2 a - b [L106] 2 return a - b; [L64] RET, EXPR 2 minus(counter, A[i]) [L64] 2 int tmp = minus(counter, A[i]); [L49] 1 int i=0; VAL [A={-3:0}, N=1, counter=0, i=0] [L49] COND TRUE 1 i= 0 || a >= -2147483648 - b [L110] EXPR 1 -2147483648 - b [L110] EXPR 1 b >= 0 || a >= -2147483648 - b [L110] CALL 1 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L38] COND FALSE 1 !(!cond) [L110] RET 1 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L111] EXPR 1 b <= 0 || a <= 2147483647 - b [L111] CALL 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L38] COND FALSE 1 !(!cond) [L111] RET 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L112] EXPR 1 a + b [L112] 1 return a + b; [L51] RET, EXPR 1 plus(counter, A[i]) [L51] 1 int tmp = plus(counter, A[i]); [L67] 2 counter = tmp [L62] 2 i++ VAL [A={-3:0}, N=1, counter=6, i=1, tmp=6] [L62] COND FALSE 2 !(i