/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 -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-more-array-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 01:07:26,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 01:07:26,583 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 01:07:26,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 01:07:26,587 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 01:07:26,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 01:07:26,612 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 01:07:26,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 01:07:26,613 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 01:07:26,616 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 01:07:26,617 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 01:07:26,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 01:07:26,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 01:07:26,618 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 01:07:26,619 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 01:07:26,619 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 01:07:26,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 01:07:26,619 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 01:07:26,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 01:07:26,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 01:07:26,620 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 01:07:26,621 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 01:07:26,621 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 01:07:26,622 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 01:07:26,622 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 01:07:26,622 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 01:07:26,622 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 01:07:26,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:07:26,623 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 01:07:26,623 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 01:07:26,624 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 01:07:26,624 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 01:07:26,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 01:07:26,625 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 01:07:26,625 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 01:07:26,625 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 01:07:26,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 01:07:26,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 01:07:26,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 01:07:26,952 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 01:07:26,953 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 01:07:26,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c [2023-08-27 01:07:28,239 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 01:07:28,490 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 01:07:28,490 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c [2023-08-27 01:07:28,497 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec80d4442/a1ead681e0094b27bbe65ff7cf50f5ef/FLAGac903e40f [2023-08-27 01:07:28,510 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec80d4442/a1ead681e0094b27bbe65ff7cf50f5ef [2023-08-27 01:07:28,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 01:07:28,514 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 01:07:28,515 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 01:07:28,515 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 01:07:28,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 01:07:28,518 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:07:28" (1/1) ... [2023-08-27 01:07:28,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73b82676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:07:28, skipping insertion in model container [2023-08-27 01:07:28,519 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:07:28" (1/1) ... [2023-08-27 01:07:28,539 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 01:07:28,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:07:28,768 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 01:07:28,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:07:28,818 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:07:28,818 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:07:28,824 INFO L206 MainTranslator]: Completed translation [2023-08-27 01:07:28,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:07:28 WrapperNode [2023-08-27 01:07:28,826 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 01:07:28,827 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 01:07:28,827 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 01:07:28,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 01:07:28,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:07:28" (1/1) ... [2023-08-27 01:07:28,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:07:28" (1/1) ... [2023-08-27 01:07:28,894 INFO L138 Inliner]: procedures = 25, calls = 59, calls flagged for inlining = 17, calls inlined = 29, statements flattened = 385 [2023-08-27 01:07:28,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 01:07:28,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 01:07:28,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 01:07:28,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 01:07:28,908 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:07:28" (1/1) ... [2023-08-27 01:07:28,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:07:28" (1/1) ... [2023-08-27 01:07:28,920 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:07:28" (1/1) ... [2023-08-27 01:07:28,920 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:07:28" (1/1) ... [2023-08-27 01:07:28,928 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:07:28" (1/1) ... [2023-08-27 01:07:28,932 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:07:28" (1/1) ... [2023-08-27 01:07:28,934 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:07:28" (1/1) ... [2023-08-27 01:07:28,935 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:07:28" (1/1) ... [2023-08-27 01:07:28,938 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 01:07:28,939 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 01:07:28,939 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 01:07:28,939 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 01:07:28,939 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:07:28" (1/1) ... [2023-08-27 01:07:28,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:07:28,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:07:28,970 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 01:07:28,995 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 01:07:29,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 01:07:29,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 01:07:29,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 01:07:29,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 01:07:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 01:07:29,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 01:07:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 01:07:29,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 01:07:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 01:07:29,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 01:07:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 01:07:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 01:07:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 01:07:29,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 01:07:29,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 01:07:29,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 01:07:29,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 01:07:29,015 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 01:07:29,133 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 01:07:29,134 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 01:07:29,705 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 01:07:30,946 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 01:07:30,946 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-27 01:07:30,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:07:30 BoogieIcfgContainer [2023-08-27 01:07:30,949 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 01:07:30,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 01:07:30,951 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 01:07:30,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 01:07:30,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:07:28" (1/3) ... [2023-08-27 01:07:30,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7cb326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:07:30, skipping insertion in model container [2023-08-27 01:07:30,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:07:28" (2/3) ... [2023-08-27 01:07:30,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7cb326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:07:30, skipping insertion in model container [2023-08-27 01:07:30,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:07:30" (3/3) ... [2023-08-27 01:07:30,955 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2023-08-27 01:07:30,971 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 01:07:30,971 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 47 error locations. [2023-08-27 01:07:30,971 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 01:07:31,357 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 01:07:31,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 245 transitions, 514 flow [2023-08-27 01:07:31,493 INFO L124 PetriNetUnfolderBase]: 16/242 cut-off events. [2023-08-27 01:07:31,493 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 01:07:31,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 242 events. 16/242 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 406 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 187. Up to 2 conditions per place. [2023-08-27 01:07:31,499 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 245 transitions, 514 flow [2023-08-27 01:07:31,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 231 transitions, 480 flow [2023-08-27 01:07:31,508 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 01:07:31,516 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 225 places, 231 transitions, 480 flow [2023-08-27 01:07:31,518 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 225 places, 231 transitions, 480 flow [2023-08-27 01:07:31,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 231 transitions, 480 flow [2023-08-27 01:07:31,603 INFO L124 PetriNetUnfolderBase]: 16/231 cut-off events. [2023-08-27 01:07:31,604 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 01:07:31,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 231 events. 16/231 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 413 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 187. Up to 2 conditions per place. [2023-08-27 01:07:31,609 INFO L119 LiptonReduction]: Number of co-enabled transitions 6720 [2023-08-27 01:08:04,940 INFO L134 LiptonReduction]: Checked pairs total: 11552 [2023-08-27 01:08:04,941 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-08-27 01:08:04,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 01:08:04,957 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;@192bf31b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 01:08:04,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2023-08-27 01:08:04,960 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 01:08:04,960 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 01:08:04,960 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 01:08:04,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:04,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 01:08:04,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:08:04,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:04,965 INFO L85 PathProgramCache]: Analyzing trace with hash 54601, now seen corresponding path program 1 times [2023-08-27 01:08:04,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:04,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869496694] [2023-08-27 01:08:04,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:04,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:05,221 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 01:08:05,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:05,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869496694] [2023-08-27 01:08:05,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869496694] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:08:05,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:08:05,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:08:05,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568980349] [2023-08-27 01:08:05,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:08:05,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:08:05,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:05,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:08:05,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:08:05,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 486 [2023-08-27 01:08:05,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:05,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:05,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 486 [2023-08-27 01:08:05,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:09,316 INFO L124 PetriNetUnfolderBase]: 14890/18667 cut-off events. [2023-08-27 01:08:09,316 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2023-08-27 01:08:09,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37673 conditions, 18667 events. 14890/18667 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 1924. Compared 94157 event pairs, 7825 based on Foata normal form. 0/4355 useless extension candidates. Maximal degree in co-relation 34953. Up to 18554 conditions per place. [2023-08-27 01:08:09,450 INFO L140 encePairwiseOnDemand]: 459/486 looper letters, 52 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-08-27 01:08:09,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 252 flow [2023-08-27 01:08:09,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:08:09,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:08:09,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2023-08-27 01:08:09,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40809327846364885 [2023-08-27 01:08:09,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2023-08-27 01:08:09,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2023-08-27 01:08:09,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:09,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2023-08-27 01:08:09,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:09,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:09,487 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:09,489 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 166 flow. Second operand 3 states and 595 transitions. [2023-08-27 01:08:09,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 252 flow [2023-08-27 01:08:09,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 240 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 01:08:09,544 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 162 flow [2023-08-27 01:08:09,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2023-08-27 01:08:09,548 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -20 predicate places. [2023-08-27 01:08:09,549 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 162 flow [2023-08-27 01:08:09,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:09,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:09,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 01:08:09,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 01:08:09,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:08:09,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:09,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1694315, now seen corresponding path program 1 times [2023-08-27 01:08:09,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:09,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524181532] [2023-08-27 01:08:09,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:09,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:09,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:08:09,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:09,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524181532] [2023-08-27 01:08:09,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524181532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:08:09,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:08:09,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:08:09,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158236797] [2023-08-27 01:08:09,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:08:09,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:08:09,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:09,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:08:09,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:08:09,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 486 [2023-08-27 01:08:09,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:09,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:09,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 486 [2023-08-27 01:08:09,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:13,173 INFO L124 PetriNetUnfolderBase]: 14890/18665 cut-off events. [2023-08-27 01:08:13,173 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-27 01:08:13,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37383 conditions, 18665 events. 14890/18665 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 1924. Compared 94213 event pairs, 7825 based on Foata normal form. 0/4357 useless extension candidates. Maximal degree in co-relation 37341. Up to 18546 conditions per place. [2023-08-27 01:08:13,337 INFO L140 encePairwiseOnDemand]: 482/486 looper letters, 52 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2023-08-27 01:08:13,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 264 flow [2023-08-27 01:08:13,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:08:13,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:08:13,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 569 transitions. [2023-08-27 01:08:13,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39026063100137176 [2023-08-27 01:08:13,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 569 transitions. [2023-08-27 01:08:13,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 569 transitions. [2023-08-27 01:08:13,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:13,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 569 transitions. [2023-08-27 01:08:13,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:13,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:13,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:13,348 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 162 flow. Second operand 3 states and 569 transitions. [2023-08-27 01:08:13,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 264 flow [2023-08-27 01:08:13,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:08:13,351 INFO L231 Difference]: Finished difference. Result has 57 places, 58 transitions, 150 flow [2023-08-27 01:08:13,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=57, PETRI_TRANSITIONS=58} [2023-08-27 01:08:13,352 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -22 predicate places. [2023-08-27 01:08:13,352 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 58 transitions, 150 flow [2023-08-27 01:08:13,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:13,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:13,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 01:08:13,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 01:08:13,360 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:08:13,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:13,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1694317, now seen corresponding path program 1 times [2023-08-27 01:08:13,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:13,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688434990] [2023-08-27 01:08:13,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:13,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:13,481 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 01:08:13,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:13,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688434990] [2023-08-27 01:08:13,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688434990] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:08:13,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505187938] [2023-08-27 01:08:13,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:13,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:08:13,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:08:13,487 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 01:08:13,531 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 01:08:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:13,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:08:13,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:08:13,895 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 01:08:13,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:08:13,908 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 01:08:13,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505187938] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:08:13,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:08:13,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 01:08:13,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917452511] [2023-08-27 01:08:13,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:08:13,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:08:13,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:13,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:08:13,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:08:13,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 486 [2023-08-27 01:08:13,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 58 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 173.14285714285714) internal successors, (1212), 7 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:13,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:13,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 486 [2023-08-27 01:08:13,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:16,741 INFO L124 PetriNetUnfolderBase]: 14896/18677 cut-off events. [2023-08-27 01:08:16,742 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-27 01:08:16,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37420 conditions, 18677 events. 14896/18677 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 1924. Compared 94163 event pairs, 7825 based on Foata normal form. 0/4366 useless extension candidates. Maximal degree in co-relation 37341. Up to 18555 conditions per place. [2023-08-27 01:08:16,841 INFO L140 encePairwiseOnDemand]: 479/486 looper letters, 50 selfloop transitions, 17 changer transitions 0/70 dead transitions. [2023-08-27 01:08:16,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 70 transitions, 338 flow [2023-08-27 01:08:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:08:16,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:08:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1105 transitions. [2023-08-27 01:08:16,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3789437585733882 [2023-08-27 01:08:16,845 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1105 transitions. [2023-08-27 01:08:16,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1105 transitions. [2023-08-27 01:08:16,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:16,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1105 transitions. [2023-08-27 01:08:16,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 184.16666666666666) internal successors, (1105), 6 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:16,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:16,856 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:16,856 INFO L175 Difference]: Start difference. First operand has 57 places, 58 transitions, 150 flow. Second operand 6 states and 1105 transitions. [2023-08-27 01:08:16,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 70 transitions, 338 flow [2023-08-27 01:08:16,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 70 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:08:16,859 INFO L231 Difference]: Finished difference. Result has 63 places, 70 transitions, 262 flow [2023-08-27 01:08:16,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=63, PETRI_TRANSITIONS=70} [2023-08-27 01:08:16,860 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -16 predicate places. [2023-08-27 01:08:16,861 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 70 transitions, 262 flow [2023-08-27 01:08:16,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.14285714285714) internal successors, (1212), 7 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:16,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:16,862 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 01:08:16,874 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 01:08:17,068 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 01:08:17,069 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:08:17,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:17,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1062597173, now seen corresponding path program 2 times [2023-08-27 01:08:17,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:17,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904310457] [2023-08-27 01:08:17,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:17,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:17,210 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 01:08:17,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:17,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904310457] [2023-08-27 01:08:17,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904310457] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:08:17,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119232204] [2023-08-27 01:08:17,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:08:17,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:08:17,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:08:17,217 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 01:08:17,228 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 01:08:17,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 01:08:17,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:08:17,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 01:08:17,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:08:17,563 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 01:08:17,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:08:17,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119232204] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:08:17,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:08:17,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 01:08:17,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210166764] [2023-08-27 01:08:17,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:08:17,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:08:17,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:17,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:08:17,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 01:08:17,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 486 [2023-08-27 01:08:17,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 70 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:17,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:17,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 486 [2023-08-27 01:08:17,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:20,475 INFO L124 PetriNetUnfolderBase]: 14896/18676 cut-off events. [2023-08-27 01:08:20,475 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-08-27 01:08:20,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37449 conditions, 18676 events. 14896/18676 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 1924. Compared 94111 event pairs, 7825 based on Foata normal form. 1/4369 useless extension candidates. Maximal degree in co-relation 37390. Up to 18560 conditions per place. [2023-08-27 01:08:20,575 INFO L140 encePairwiseOnDemand]: 483/486 looper letters, 60 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2023-08-27 01:08:20,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 69 transitions, 384 flow [2023-08-27 01:08:20,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:08:20,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:08:20,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2023-08-27 01:08:20,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39300411522633744 [2023-08-27 01:08:20,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 573 transitions. [2023-08-27 01:08:20,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 573 transitions. [2023-08-27 01:08:20,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:20,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 573 transitions. [2023-08-27 01:08:20,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:20,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:20,582 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:20,583 INFO L175 Difference]: Start difference. First operand has 63 places, 70 transitions, 262 flow. Second operand 3 states and 573 transitions. [2023-08-27 01:08:20,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 69 transitions, 384 flow [2023-08-27 01:08:20,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 69 transitions, 358 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 01:08:20,585 INFO L231 Difference]: Finished difference. Result has 63 places, 69 transitions, 238 flow [2023-08-27 01:08:20,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=63, PETRI_TRANSITIONS=69} [2023-08-27 01:08:20,586 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -16 predicate places. [2023-08-27 01:08:20,587 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 69 transitions, 238 flow [2023-08-27 01:08:20,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:20,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:20,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 01:08:20,599 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 01:08:20,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-27 01:08:20,794 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:08:20,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:20,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1043842473, now seen corresponding path program 1 times [2023-08-27 01:08:20,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:20,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050291244] [2023-08-27 01:08:20,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:20,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:20,935 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 01:08:20,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:20,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050291244] [2023-08-27 01:08:20,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050291244] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:08:20,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:08:20,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 01:08:20,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567794816] [2023-08-27 01:08:20,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:08:20,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 01:08:20,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:20,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 01:08:20,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:08:20,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 486 [2023-08-27 01:08:20,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 69 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 152.2) internal successors, (761), 5 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:20,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:20,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 486 [2023-08-27 01:08:20,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:23,248 INFO L124 PetriNetUnfolderBase]: 12169/15955 cut-off events. [2023-08-27 01:08:23,248 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-27 01:08:23,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32013 conditions, 15955 events. 12169/15955 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 1924. Compared 89323 event pairs, 7826 based on Foata normal form. 4/4380 useless extension candidates. Maximal degree in co-relation 31940. Up to 15834 conditions per place. [2023-08-27 01:08:23,297 INFO L140 encePairwiseOnDemand]: 481/486 looper letters, 63 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2023-08-27 01:08:23,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 416 flow [2023-08-27 01:08:23,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 01:08:23,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 01:08:23,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 815 transitions. [2023-08-27 01:08:23,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33539094650205764 [2023-08-27 01:08:23,300 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 815 transitions. [2023-08-27 01:08:23,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 815 transitions. [2023-08-27 01:08:23,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:23,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 815 transitions. [2023-08-27 01:08:23,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:23,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 486.0) internal successors, (2916), 6 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:23,307 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 486.0) internal successors, (2916), 6 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:23,307 INFO L175 Difference]: Start difference. First operand has 63 places, 69 transitions, 238 flow. Second operand 5 states and 815 transitions. [2023-08-27 01:08:23,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 416 flow [2023-08-27 01:08:23,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 404 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:08:23,310 INFO L231 Difference]: Finished difference. Result has 66 places, 69 transitions, 254 flow [2023-08-27 01:08:23,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=66, PETRI_TRANSITIONS=69} [2023-08-27 01:08:23,310 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -13 predicate places. [2023-08-27 01:08:23,310 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 69 transitions, 254 flow [2023-08-27 01:08:23,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 152.2) internal successors, (761), 5 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:23,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:23,311 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 01:08:23,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 01:08:23,311 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:08:23,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:23,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1999445087, now seen corresponding path program 1 times [2023-08-27 01:08:23,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:23,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048024228] [2023-08-27 01:08:23,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:23,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:23,401 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 01:08:23,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:23,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048024228] [2023-08-27 01:08:23,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048024228] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:08:23,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751428721] [2023-08-27 01:08:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:23,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:08:23,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:08:23,405 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 01:08:23,432 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 01:08:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:23,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:08:23,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:08:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 01:08:23,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:08:23,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751428721] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:08:23,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:08:23,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-08-27 01:08:23,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506428587] [2023-08-27 01:08:23,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:08:23,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:08:23,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:23,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:08:23,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-27 01:08:23,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 486 [2023-08-27 01:08:23,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 69 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 156.25) internal successors, (625), 4 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:23,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:23,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 486 [2023-08-27 01:08:23,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:26,691 INFO L124 PetriNetUnfolderBase]: 14894/18675 cut-off events. [2023-08-27 01:08:26,691 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-08-27 01:08:26,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37445 conditions, 18675 events. 14894/18675 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 1924. Compared 93738 event pairs, 7825 based on Foata normal form. 1/4372 useless extension candidates. Maximal degree in co-relation 37387. Up to 18559 conditions per place. [2023-08-27 01:08:26,770 INFO L140 encePairwiseOnDemand]: 482/486 looper letters, 57 selfloop transitions, 7 changer transitions 1/68 dead transitions. [2023-08-27 01:08:26,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 68 transitions, 375 flow [2023-08-27 01:08:26,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:08:26,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:08:26,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 674 transitions. [2023-08-27 01:08:26,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34670781893004116 [2023-08-27 01:08:26,775 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 674 transitions. [2023-08-27 01:08:26,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 674 transitions. [2023-08-27 01:08:26,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:26,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 674 transitions. [2023-08-27 01:08:26,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 168.5) internal successors, (674), 4 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:26,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 486.0) internal successors, (2430), 5 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:26,780 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 486.0) internal successors, (2430), 5 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:26,780 INFO L175 Difference]: Start difference. First operand has 66 places, 69 transitions, 254 flow. Second operand 4 states and 674 transitions. [2023-08-27 01:08:26,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 68 transitions, 375 flow [2023-08-27 01:08:26,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 68 transitions, 351 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-27 01:08:26,782 INFO L231 Difference]: Finished difference. Result has 65 places, 67 transitions, 231 flow [2023-08-27 01:08:26,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=65, PETRI_TRANSITIONS=67} [2023-08-27 01:08:26,783 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -14 predicate places. [2023-08-27 01:08:26,783 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 67 transitions, 231 flow [2023-08-27 01:08:26,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.25) internal successors, (625), 4 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:26,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:26,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:08:26,790 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 01:08:26,989 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 01:08:26,990 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:08:26,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:26,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1626640783, now seen corresponding path program 1 times [2023-08-27 01:08:26,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:26,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913462528] [2023-08-27 01:08:26,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:26,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:27,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 01:08:27,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:27,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913462528] [2023-08-27 01:08:27,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913462528] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:08:27,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:08:27,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:08:27,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510067825] [2023-08-27 01:08:27,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:08:27,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:08:27,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:27,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:08:27,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:08:27,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 486 [2023-08-27 01:08:27,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 67 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:27,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:27,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 486 [2023-08-27 01:08:27,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:30,697 INFO L124 PetriNetUnfolderBase]: 20386/26364 cut-off events. [2023-08-27 01:08:30,697 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2023-08-27 01:08:30,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52916 conditions, 26364 events. 20386/26364 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 3059. Compared 157655 event pairs, 7894 based on Foata normal form. 0/6931 useless extension candidates. Maximal degree in co-relation 52861. Up to 16235 conditions per place. [2023-08-27 01:08:30,830 INFO L140 encePairwiseOnDemand]: 481/486 looper letters, 97 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2023-08-27 01:08:30,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 102 transitions, 503 flow [2023-08-27 01:08:30,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:08:30,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:08:30,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 634 transitions. [2023-08-27 01:08:30,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348422496570645 [2023-08-27 01:08:30,833 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 634 transitions. [2023-08-27 01:08:30,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 634 transitions. [2023-08-27 01:08:30,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:30,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 634 transitions. [2023-08-27 01:08:30,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:30,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:30,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:30,838 INFO L175 Difference]: Start difference. First operand has 65 places, 67 transitions, 231 flow. Second operand 3 states and 634 transitions. [2023-08-27 01:08:30,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 102 transitions, 503 flow [2023-08-27 01:08:30,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 102 transitions, 489 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:08:30,841 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 238 flow [2023-08-27 01:08:30,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2023-08-27 01:08:30,842 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -15 predicate places. [2023-08-27 01:08:30,842 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 238 flow [2023-08-27 01:08:30,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:30,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:30,842 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-27 01:08:30,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 01:08:30,843 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:08:30,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:30,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1626602621, now seen corresponding path program 1 times [2023-08-27 01:08:30,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:30,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692938984] [2023-08-27 01:08:30,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:30,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:30,981 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:08:30,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:30,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692938984] [2023-08-27 01:08:30,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692938984] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:08:30,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651533073] [2023-08-27 01:08:30,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:30,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:08:30,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:08:30,983 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 01:08:31,013 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 01:08:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:31,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:08:31,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:08:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:08:31,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:08:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:08:31,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651533073] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:08:31,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:08:31,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2023-08-27 01:08:31,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511448903] [2023-08-27 01:08:31,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:08:31,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 01:08:31,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:31,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 01:08:31,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-27 01:08:31,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 486 [2023-08-27 01:08:31,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 238 flow. Second operand has 15 states, 15 states have (on average 156.26666666666668) internal successors, (2344), 15 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:31,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:31,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 486 [2023-08-27 01:08:31,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:38,445 INFO L124 PetriNetUnfolderBase]: 37243/48564 cut-off events. [2023-08-27 01:08:38,445 INFO L125 PetriNetUnfolderBase]: For 1315/1920 co-relation queries the response was YES. [2023-08-27 01:08:38,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102159 conditions, 48564 events. 37243/48564 cut-off events. For 1315/1920 co-relation queries the response was YES. Maximal size of possible extension queue 5095. Compared 306949 event pairs, 23930 based on Foata normal form. 606/14301 useless extension candidates. Maximal degree in co-relation 102105. Up to 24134 conditions per place. [2023-08-27 01:08:38,658 INFO L140 encePairwiseOnDemand]: 480/486 looper letters, 101 selfloop transitions, 13 changer transitions 0/117 dead transitions. [2023-08-27 01:08:38,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 117 transitions, 589 flow [2023-08-27 01:08:38,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:08:38,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:08:38,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1343 transitions. [2023-08-27 01:08:38,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3454218106995885 [2023-08-27 01:08:38,662 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1343 transitions. [2023-08-27 01:08:38,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1343 transitions. [2023-08-27 01:08:38,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:38,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1343 transitions. [2023-08-27 01:08:38,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 167.875) internal successors, (1343), 8 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:38,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 486.0) internal successors, (4374), 9 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:38,671 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 486.0) internal successors, (4374), 9 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:38,671 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 238 flow. Second operand 8 states and 1343 transitions. [2023-08-27 01:08:38,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 117 transitions, 589 flow [2023-08-27 01:08:38,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 117 transitions, 584 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:08:38,675 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 272 flow [2023-08-27 01:08:38,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=272, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2023-08-27 01:08:38,676 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -9 predicate places. [2023-08-27 01:08:38,676 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 272 flow [2023-08-27 01:08:38,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 156.26666666666668) internal successors, (2344), 15 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:38,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:38,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:08:38,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-27 01:08:38,885 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 01:08:38,885 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:08:38,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:38,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1626640625, now seen corresponding path program 1 times [2023-08-27 01:08:38,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:38,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576187802] [2023-08-27 01:08:38,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:38,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:39,380 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 01:08:39,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:39,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576187802] [2023-08-27 01:08:39,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576187802] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:08:39,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492757781] [2023-08-27 01:08:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:39,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:08:39,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:08:39,385 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 01:08:39,388 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 01:08:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:39,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 01:08:39,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:08:39,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:39,774 INFO L322 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-27 01:08:39,774 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2023-08-27 01:08:39,808 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 01:08:39,843 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 01:08:39,843 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 01:08:39,870 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 01:08:39,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:39,897 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 01:08:39,908 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 01:08:39,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:08:39,988 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_318 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_318) c_~A~0.base) c_~A~0.offset) 2147483648)) is different from false [2023-08-27 01:08:40,051 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:40,051 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 01:08:40,061 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:40,062 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 01:08:40,069 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 01:08:40,074 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 01:08:40,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 01:08:40,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492757781] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:08:40,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:08:40,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-27 01:08:40,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906690956] [2023-08-27 01:08:40,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:08:40,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 01:08:40,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:40,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 01:08:40,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=216, Unknown=2, NotChecked=30, Total=306 [2023-08-27 01:08:40,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 486 [2023-08-27 01:08:40,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 272 flow. Second operand has 18 states, 18 states have (on average 140.16666666666666) internal successors, (2523), 18 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:40,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:40,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 486 [2023-08-27 01:08:40,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:49,450 INFO L124 PetriNetUnfolderBase]: 42439/55636 cut-off events. [2023-08-27 01:08:49,450 INFO L125 PetriNetUnfolderBase]: For 1952/1952 co-relation queries the response was YES. [2023-08-27 01:08:49,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115758 conditions, 55636 events. 42439/55636 cut-off events. For 1952/1952 co-relation queries the response was YES. Maximal size of possible extension queue 5885. Compared 361953 event pairs, 15602 based on Foata normal form. 0/15996 useless extension candidates. Maximal degree in co-relation 115701. Up to 49579 conditions per place. [2023-08-27 01:08:49,690 INFO L140 encePairwiseOnDemand]: 476/486 looper letters, 100 selfloop transitions, 15 changer transitions 0/117 dead transitions. [2023-08-27 01:08:49,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 117 transitions, 610 flow [2023-08-27 01:08:49,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:08:49,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:08:49,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1211 transitions. [2023-08-27 01:08:49,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31147119341563784 [2023-08-27 01:08:49,693 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1211 transitions. [2023-08-27 01:08:49,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1211 transitions. [2023-08-27 01:08:49,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:49,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1211 transitions. [2023-08-27 01:08:49,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 151.375) internal successors, (1211), 8 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:49,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 486.0) internal successors, (4374), 9 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:49,701 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 486.0) internal successors, (4374), 9 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:49,701 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 272 flow. Second operand 8 states and 1211 transitions. [2023-08-27 01:08:49,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 117 transitions, 610 flow [2023-08-27 01:08:49,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 117 transitions, 582 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 01:08:49,705 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 323 flow [2023-08-27 01:08:49,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=323, PETRI_PLACES=77, PETRI_TRANSITIONS=79} [2023-08-27 01:08:49,706 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2023-08-27 01:08:49,706 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 323 flow [2023-08-27 01:08:49,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 140.16666666666666) internal successors, (2523), 18 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:49,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:49,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:08:49,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-27 01:08:49,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:08:49,913 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:08:49,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:49,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1626640631, now seen corresponding path program 1 times [2023-08-27 01:08:49,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:49,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358579836] [2023-08-27 01:08:49,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:49,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:50,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 01:08:50,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:50,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358579836] [2023-08-27 01:08:50,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358579836] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:08:50,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:08:50,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:08:50,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647259222] [2023-08-27 01:08:50,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:08:50,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:08:50,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:50,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:08:50,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:08:50,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 486 [2023-08-27 01:08:50,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:50,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:50,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 486 [2023-08-27 01:08:50,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:58,819 INFO L124 PetriNetUnfolderBase]: 41265/53838 cut-off events. [2023-08-27 01:08:58,820 INFO L125 PetriNetUnfolderBase]: For 5406/6010 co-relation queries the response was YES. [2023-08-27 01:08:58,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115992 conditions, 53838 events. 41265/53838 cut-off events. For 5406/6010 co-relation queries the response was YES. Maximal size of possible extension queue 4608. Compared 347483 event pairs, 9368 based on Foata normal form. 604/18580 useless extension candidates. Maximal degree in co-relation 115933. Up to 33817 conditions per place. [2023-08-27 01:08:59,059 INFO L140 encePairwiseOnDemand]: 482/486 looper letters, 110 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2023-08-27 01:08:59,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 117 transitions, 643 flow [2023-08-27 01:08:59,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:08:59,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:08:59,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-08-27 01:08:59,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4430727023319616 [2023-08-27 01:08:59,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-08-27 01:08:59,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-08-27 01:08:59,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:59,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-08-27 01:08:59,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:59,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:59,065 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:59,065 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 323 flow. Second operand 3 states and 646 transitions. [2023-08-27 01:08:59,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 117 transitions, 643 flow [2023-08-27 01:08:59,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 117 transitions, 641 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-27 01:08:59,074 INFO L231 Difference]: Finished difference. Result has 80 places, 79 transitions, 334 flow [2023-08-27 01:08:59,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=80, PETRI_TRANSITIONS=79} [2023-08-27 01:08:59,075 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2023-08-27 01:08:59,075 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 79 transitions, 334 flow [2023-08-27 01:08:59,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:59,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:59,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:08:59,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 01:08:59,076 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:08:59,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:59,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1626640622, now seen corresponding path program 1 times [2023-08-27 01:08:59,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:59,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838688433] [2023-08-27 01:08:59,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:59,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:59,353 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 01:08:59,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:59,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838688433] [2023-08-27 01:08:59,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838688433] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:08:59,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723376581] [2023-08-27 01:08:59,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:59,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:08:59,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:08:59,355 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 01:08:59,361 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 01:08:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:59,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 01:08:59,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:08:59,689 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 01:08:59,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:59,713 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 01:08:59,722 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 01:08:59,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:08:59,768 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:59,768 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 01:08:59,774 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:59,775 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 01:08:59,778 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 01:08:59,807 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 01:08:59,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723376581] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:08:59,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:08:59,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 01:08:59,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295649857] [2023-08-27 01:08:59,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:08:59,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 01:08:59,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:59,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 01:08:59,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=145, Unknown=1, NotChecked=0, Total=182 [2023-08-27 01:08:59,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 486 [2023-08-27 01:08:59,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 334 flow. Second operand has 14 states, 14 states have (on average 144.35714285714286) internal successors, (2021), 14 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:59,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:59,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 486 [2023-08-27 01:08:59,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:09:11,829 INFO L124 PetriNetUnfolderBase]: 54581/72758 cut-off events. [2023-08-27 01:09:11,829 INFO L125 PetriNetUnfolderBase]: For 13942/13942 co-relation queries the response was YES. [2023-08-27 01:09:11,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157598 conditions, 72758 events. 54581/72758 cut-off events. For 13942/13942 co-relation queries the response was YES. Maximal size of possible extension queue 6683. Compared 514192 event pairs, 17140 based on Foata normal form. 0/24822 useless extension candidates. Maximal degree in co-relation 157537. Up to 44170 conditions per place. [2023-08-27 01:09:12,176 INFO L140 encePairwiseOnDemand]: 468/486 looper letters, 78 selfloop transitions, 36 changer transitions 0/116 dead transitions. [2023-08-27 01:09:12,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 116 transitions, 657 flow [2023-08-27 01:09:12,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 01:09:12,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 01:09:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1384 transitions. [2023-08-27 01:09:12,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31641518061271146 [2023-08-27 01:09:12,180 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1384 transitions. [2023-08-27 01:09:12,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1384 transitions. [2023-08-27 01:09:12,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:09:12,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1384 transitions. [2023-08-27 01:09:12,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 153.77777777777777) internal successors, (1384), 9 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:12,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 486.0) internal successors, (4860), 10 states have internal predecessors, (4860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:12,189 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 486.0) internal successors, (4860), 10 states have internal predecessors, (4860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:12,189 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 334 flow. Second operand 9 states and 1384 transitions. [2023-08-27 01:09:12,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 116 transitions, 657 flow [2023-08-27 01:09:12,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 116 transitions, 651 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:09:12,196 INFO L231 Difference]: Finished difference. Result has 88 places, 88 transitions, 452 flow [2023-08-27 01:09:12,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=452, PETRI_PLACES=88, PETRI_TRANSITIONS=88} [2023-08-27 01:09:12,197 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 9 predicate places. [2023-08-27 01:09:12,197 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 88 transitions, 452 flow [2023-08-27 01:09:12,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 144.35714285714286) internal successors, (2021), 14 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:12,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:09:12,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:09:12,204 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 01:09:12,403 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 01:09:12,404 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:09:12,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:09:12,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1626640621, now seen corresponding path program 1 times [2023-08-27 01:09:12,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:09:12,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190079318] [2023-08-27 01:09:12,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:09:12,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:09:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:09:12,632 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 01:09:12,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:09:12,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190079318] [2023-08-27 01:09:12,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190079318] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:09:12,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995422206] [2023-08-27 01:09:12,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:09:12,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:09:12,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:09:12,634 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 01:09:12,636 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 01:09:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:09:12,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 01:09:12,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:09:13,020 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 01:09:13,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:13,047 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 01:09:13,057 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 01:09:13,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:09:13,105 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:09:13,105 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 01:09:13,113 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:09:13,113 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 01:09:13,117 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 01:09:13,151 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 01:09:13,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995422206] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:09:13,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:09:13,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 01:09:13,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157807452] [2023-08-27 01:09:13,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:09:13,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 01:09:13,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:09:13,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 01:09:13,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=145, Unknown=1, NotChecked=0, Total=182 [2023-08-27 01:09:13,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 486 [2023-08-27 01:09:13,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 452 flow. Second operand has 14 states, 14 states have (on average 144.35714285714286) internal successors, (2021), 14 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:13,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:09:13,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 486 [2023-08-27 01:09:13,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:09:26,269 INFO L124 PetriNetUnfolderBase]: 57395/76770 cut-off events. [2023-08-27 01:09:26,269 INFO L125 PetriNetUnfolderBase]: For 36628/36628 co-relation queries the response was YES. [2023-08-27 01:09:26,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173202 conditions, 76770 events. 57395/76770 cut-off events. For 36628/36628 co-relation queries the response was YES. Maximal size of possible extension queue 8549. Compared 555755 event pairs, 18036 based on Foata normal form. 2/27156 useless extension candidates. Maximal degree in co-relation 173135. Up to 48148 conditions per place. [2023-08-27 01:09:26,653 INFO L140 encePairwiseOnDemand]: 468/486 looper letters, 78 selfloop transitions, 39 changer transitions 0/119 dead transitions. [2023-08-27 01:09:26,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 119 transitions, 773 flow [2023-08-27 01:09:26,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 01:09:26,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 01:09:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1383 transitions. [2023-08-27 01:09:26,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3161865569272977 [2023-08-27 01:09:26,658 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1383 transitions. [2023-08-27 01:09:26,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1383 transitions. [2023-08-27 01:09:26,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:09:26,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1383 transitions. [2023-08-27 01:09:26,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 153.66666666666666) internal successors, (1383), 9 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:26,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 486.0) internal successors, (4860), 10 states have internal predecessors, (4860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:26,667 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 486.0) internal successors, (4860), 10 states have internal predecessors, (4860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:26,667 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 452 flow. Second operand 9 states and 1383 transitions. [2023-08-27 01:09:26,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 119 transitions, 773 flow [2023-08-27 01:09:26,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 119 transitions, 745 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-27 01:09:26,689 INFO L231 Difference]: Finished difference. Result has 93 places, 92 transitions, 543 flow [2023-08-27 01:09:26,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=543, PETRI_PLACES=93, PETRI_TRANSITIONS=92} [2023-08-27 01:09:26,690 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 14 predicate places. [2023-08-27 01:09:26,690 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 92 transitions, 543 flow [2023-08-27 01:09:26,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 144.35714285714286) internal successors, (2021), 14 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:26,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:09:26,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:09:26,698 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 01:09:26,897 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 01:09:26,898 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:09:26,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:09:26,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1626640624, now seen corresponding path program 1 times [2023-08-27 01:09:26,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:09:26,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352533357] [2023-08-27 01:09:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:09:26,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:09:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:09:27,253 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 01:09:27,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:09:27,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352533357] [2023-08-27 01:09:27,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352533357] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:09:27,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119734528] [2023-08-27 01:09:27,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:09:27,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:09:27,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:09:27,257 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 01:09:27,264 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 01:09:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:09:27,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-27 01:09:27,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:09:27,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:27,650 INFO L322 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-27 01:09:27,650 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2023-08-27 01:09:27,684 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 01:09:27,714 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 01:09:27,714 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 01:09:27,751 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 01:09:27,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:27,780 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 01:09:27,809 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 01:09:27,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:09:27,858 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_485 (Array Int Int)) (v_ArrVal_486 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_485) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_486) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-08-27 01:09:27,886 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:09:27,887 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 01:09:27,895 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:09:27,895 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 73 treesize of output 69 [2023-08-27 01:09:27,900 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 56 treesize of output 52 [2023-08-27 01:09:27,905 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 26 treesize of output 24 [2023-08-27 01:09:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 01:09:27,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119734528] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:09:27,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:09:27,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-27 01:09:27,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613603705] [2023-08-27 01:09:27,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:09:27,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 01:09:27,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:09:27,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 01:09:27,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=212, Unknown=3, NotChecked=30, Total=306 [2023-08-27 01:09:27,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 486 [2023-08-27 01:09:27,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 543 flow. Second operand has 18 states, 18 states have (on average 140.16666666666666) internal successors, (2523), 18 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:27,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:09:27,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 486 [2023-08-27 01:09:27,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:09:40,301 INFO L124 PetriNetUnfolderBase]: 55787/75134 cut-off events. [2023-08-27 01:09:40,302 INFO L125 PetriNetUnfolderBase]: For 70094/70094 co-relation queries the response was YES. [2023-08-27 01:09:40,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176224 conditions, 75134 events. 55787/75134 cut-off events. For 70094/70094 co-relation queries the response was YES. Maximal size of possible extension queue 7158. Compared 539589 event pairs, 29464 based on Foata normal form. 2/26866 useless extension candidates. Maximal degree in co-relation 176155. Up to 68909 conditions per place. [2023-08-27 01:09:40,721 INFO L140 encePairwiseOnDemand]: 476/486 looper letters, 99 selfloop transitions, 19 changer transitions 0/120 dead transitions. [2023-08-27 01:09:40,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 120 transitions, 853 flow [2023-08-27 01:09:40,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:09:40,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:09:40,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1206 transitions. [2023-08-27 01:09:40,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3101851851851852 [2023-08-27 01:09:40,724 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1206 transitions. [2023-08-27 01:09:40,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1206 transitions. [2023-08-27 01:09:40,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:09:40,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1206 transitions. [2023-08-27 01:09:40,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 150.75) internal successors, (1206), 8 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 01:09:40,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 486.0) internal successors, (4374), 9 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:40,731 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 486.0) internal successors, (4374), 9 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:40,731 INFO L175 Difference]: Start difference. First operand has 93 places, 92 transitions, 543 flow. Second operand 8 states and 1206 transitions. [2023-08-27 01:09:40,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 120 transitions, 853 flow [2023-08-27 01:09:40,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 120 transitions, 816 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-27 01:09:40,844 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 562 flow [2023-08-27 01:09:40,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=562, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2023-08-27 01:09:40,845 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 17 predicate places. [2023-08-27 01:09:40,845 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 562 flow [2023-08-27 01:09:40,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 140.16666666666666) internal successors, (2523), 18 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:40,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:09:40,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:09:40,857 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 01:09:41,049 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 01:09:41,050 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:09:41,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:09:41,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1113486431, now seen corresponding path program 1 times [2023-08-27 01:09:41,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:09:41,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090206157] [2023-08-27 01:09:41,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:09:41,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:09:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:09:41,318 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 01:09:41,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:09:41,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090206157] [2023-08-27 01:09:41,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090206157] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:09:41,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926114903] [2023-08-27 01:09:41,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:09:41,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:09:41,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:09:41,320 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 01:09:41,323 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 01:09:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:09:41,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 01:09:41,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:09:41,701 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 01:09:41,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:41,724 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 01:09:41,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:41,758 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 01:09:41,766 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 01:09:41,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:09:41,797 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_538 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_538) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2023-08-27 01:09:41,828 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:09:41,828 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 01:09:41,835 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:09:41,835 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 01:09:41,839 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 48 treesize of output 44 [2023-08-27 01:09:41,844 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 22 treesize of output 20 [2023-08-27 01:09:41,906 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 01:09:41,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926114903] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:09:41,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:09:41,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-27 01:09:41,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234503005] [2023-08-27 01:09:41,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:09:41,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 01:09:41,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:09:41,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 01:09:41,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=195, Unknown=2, NotChecked=28, Total=272 [2023-08-27 01:09:41,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 486 [2023-08-27 01:09:41,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 562 flow. Second operand has 17 states, 17 states have (on average 142.35294117647058) internal successors, (2420), 17 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:41,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:09:41,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 486 [2023-08-27 01:09:41,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:09:54,722 INFO L124 PetriNetUnfolderBase]: 55491/74212 cut-off events. [2023-08-27 01:09:54,723 INFO L125 PetriNetUnfolderBase]: For 80812/80812 co-relation queries the response was YES. [2023-08-27 01:09:54,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174422 conditions, 74212 events. 55491/74212 cut-off events. For 80812/80812 co-relation queries the response was YES. Maximal size of possible extension queue 6811. Compared 523201 event pairs, 7248 based on Foata normal form. 26/26524 useless extension candidates. Maximal degree in co-relation 174353. Up to 45058 conditions per place. [2023-08-27 01:09:55,128 INFO L140 encePairwiseOnDemand]: 469/486 looper letters, 120 selfloop transitions, 51 changer transitions 0/173 dead transitions. [2023-08-27 01:09:55,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 173 transitions, 1195 flow [2023-08-27 01:09:55,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 01:09:55,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 01:09:55,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1402 transitions. [2023-08-27 01:09:55,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32053040695016005 [2023-08-27 01:09:55,131 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1402 transitions. [2023-08-27 01:09:55,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1402 transitions. [2023-08-27 01:09:55,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:09:55,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1402 transitions. [2023-08-27 01:09:55,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 155.77777777777777) internal successors, (1402), 9 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:55,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 486.0) internal successors, (4860), 10 states have internal predecessors, (4860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:55,138 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 486.0) internal successors, (4860), 10 states have internal predecessors, (4860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:55,138 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 562 flow. Second operand 9 states and 1402 transitions. [2023-08-27 01:09:55,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 173 transitions, 1195 flow [2023-08-27 01:09:55,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 173 transitions, 1167 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 01:09:55,443 INFO L231 Difference]: Finished difference. Result has 102 places, 111 transitions, 844 flow [2023-08-27 01:09:55,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=844, PETRI_PLACES=102, PETRI_TRANSITIONS=111} [2023-08-27 01:09:55,443 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 23 predicate places. [2023-08-27 01:09:55,443 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 111 transitions, 844 flow [2023-08-27 01:09:55,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 142.35294117647058) internal successors, (2420), 17 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:55,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:09:55,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:09:55,450 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 01:09:55,644 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 01:09:55,645 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:09:55,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:09:55,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1113486429, now seen corresponding path program 1 times [2023-08-27 01:09:55,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:09:55,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867131726] [2023-08-27 01:09:55,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:09:55,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:09:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:09:55,960 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 01:09:55,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:09:55,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867131726] [2023-08-27 01:09:55,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867131726] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:09:55,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644049391] [2023-08-27 01:09:55,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:09:55,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:09:55,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:09:55,963 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 01:09:55,965 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 01:09:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:09:56,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-27 01:09:56,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:09:56,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:56,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:56,325 INFO L322 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-27 01:09:56,325 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 15 treesize of output 36 [2023-08-27 01:09:56,363 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 01:09:56,395 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 01:09:56,396 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 01:09:56,418 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 01:09:56,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:56,442 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 01:09:56,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:56,467 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 01:09:56,474 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 01:09:56,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:09:56,499 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_595 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_595) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-08-27 01:09:56,578 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:09:56,578 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 30 treesize of output 31 [2023-08-27 01:09:56,587 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:09:56,588 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 279 treesize of output 271 [2023-08-27 01:09:56,596 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 124 treesize of output 120 [2023-08-27 01:09:56,603 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 60 treesize of output 58 [2023-08-27 01:09:56,608 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 118 treesize of output 110 [2023-08-27 01:09:56,733 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 01:09:56,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644049391] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:09:56,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:09:56,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-27 01:09:56,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082669873] [2023-08-27 01:09:56,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:09:56,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 01:09:56,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:09:56,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 01:09:56,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=4, NotChecked=36, Total=420 [2023-08-27 01:09:56,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 486 [2023-08-27 01:09:56,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 111 transitions, 844 flow. Second operand has 21 states, 21 states have (on average 139.1904761904762) internal successors, (2923), 21 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:56,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:09:56,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 486 [2023-08-27 01:09:56,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:10:09,322 INFO L124 PetriNetUnfolderBase]: 53891/71986 cut-off events. [2023-08-27 01:10:09,323 INFO L125 PetriNetUnfolderBase]: For 105640/105640 co-relation queries the response was YES. [2023-08-27 01:10:09,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179647 conditions, 71986 events. 53891/71986 cut-off events. For 105640/105640 co-relation queries the response was YES. Maximal size of possible extension queue 6605. Compared 500335 event pairs, 13690 based on Foata normal form. 26/25878 useless extension candidates. Maximal degree in co-relation 179572. Up to 64923 conditions per place. [2023-08-27 01:10:09,723 INFO L140 encePairwiseOnDemand]: 477/486 looper letters, 144 selfloop transitions, 26 changer transitions 0/172 dead transitions. [2023-08-27 01:10:09,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 172 transitions, 1303 flow [2023-08-27 01:10:09,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:10:09,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:10:09,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1235 transitions. [2023-08-27 01:10:09,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3176440329218107 [2023-08-27 01:10:09,727 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1235 transitions. [2023-08-27 01:10:09,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1235 transitions. [2023-08-27 01:10:09,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:10:09,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1235 transitions. [2023-08-27 01:10:09,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 154.375) internal successors, (1235), 8 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:09,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 486.0) internal successors, (4374), 9 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:09,734 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 486.0) internal successors, (4374), 9 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:09,734 INFO L175 Difference]: Start difference. First operand has 102 places, 111 transitions, 844 flow. Second operand 8 states and 1235 transitions. [2023-08-27 01:10:09,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 172 transitions, 1303 flow [2023-08-27 01:10:09,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 172 transitions, 1276 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-27 01:10:09,862 INFO L231 Difference]: Finished difference. Result has 106 places, 110 transitions, 852 flow [2023-08-27 01:10:09,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=852, PETRI_PLACES=106, PETRI_TRANSITIONS=110} [2023-08-27 01:10:09,863 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 27 predicate places. [2023-08-27 01:10:09,863 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 110 transitions, 852 flow [2023-08-27 01:10:09,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 139.1904761904762) internal successors, (2923), 21 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:09,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:10:09,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:10:09,876 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 01:10:10,070 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 01:10:10,070 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:10:10,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:10:10,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1113486432, now seen corresponding path program 1 times [2023-08-27 01:10:10,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:10:10,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942978856] [2023-08-27 01:10:10,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:10:10,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:10:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:10:10,288 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 01:10:10,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:10:10,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942978856] [2023-08-27 01:10:10,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942978856] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:10:10,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271712190] [2023-08-27 01:10:10,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:10:10,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:10:10,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:10:10,290 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 01:10:10,292 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 01:10:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:10:10,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 01:10:10,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:10:10,669 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 01:10:10,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:10:10,702 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 01:10:10,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:10:10,723 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 01:10:10,730 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 01:10:10,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:10:10,756 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_647 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_647) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2023-08-27 01:10:10,764 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_647 (Array Int Int)) (v_ArrVal_646 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_646) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_647) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2023-08-27 01:10:10,773 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:10:10,773 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 01:10:10,780 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:10:10,780 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 73 treesize of output 69 [2023-08-27 01:10:10,784 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 56 treesize of output 52 [2023-08-27 01:10:10,788 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 26 treesize of output 24 [2023-08-27 01:10:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-27 01:10:10,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271712190] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:10:10,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:10:10,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-27 01:10:10,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374126897] [2023-08-27 01:10:10,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:10:10,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 01:10:10,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:10:10,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 01:10:10,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=171, Unknown=2, NotChecked=54, Total=272 [2023-08-27 01:10:10,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 486 [2023-08-27 01:10:10,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 110 transitions, 852 flow. Second operand has 17 states, 17 states have (on average 142.35294117647058) internal successors, (2420), 17 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:10,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:10:10,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 486 [2023-08-27 01:10:10,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:10:22,229 INFO L124 PetriNetUnfolderBase]: 52817/70286 cut-off events. [2023-08-27 01:10:22,229 INFO L125 PetriNetUnfolderBase]: For 118017/118017 co-relation queries the response was YES. [2023-08-27 01:10:22,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177785 conditions, 70286 events. 52817/70286 cut-off events. For 118017/118017 co-relation queries the response was YES. Maximal size of possible extension queue 7772. Compared 490948 event pairs, 8364 based on Foata normal form. 24/25368 useless extension candidates. Maximal degree in co-relation 177710. Up to 41326 conditions per place. [2023-08-27 01:10:22,610 INFO L140 encePairwiseOnDemand]: 469/486 looper letters, 118 selfloop transitions, 52 changer transitions 0/172 dead transitions. [2023-08-27 01:10:22,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 172 transitions, 1328 flow [2023-08-27 01:10:22,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 01:10:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 01:10:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1400 transitions. [2023-08-27 01:10:22,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3200731595793324 [2023-08-27 01:10:22,613 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1400 transitions. [2023-08-27 01:10:22,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1400 transitions. [2023-08-27 01:10:22,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:10:22,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1400 transitions. [2023-08-27 01:10:22,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 155.55555555555554) internal successors, (1400), 9 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:22,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 486.0) internal successors, (4860), 10 states have internal predecessors, (4860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:22,619 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 486.0) internal successors, (4860), 10 states have internal predecessors, (4860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:22,619 INFO L175 Difference]: Start difference. First operand has 106 places, 110 transitions, 852 flow. Second operand 9 states and 1400 transitions. [2023-08-27 01:10:22,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 172 transitions, 1328 flow [2023-08-27 01:10:22,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 172 transitions, 1292 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-27 01:10:22,820 INFO L231 Difference]: Finished difference. Result has 109 places, 111 transitions, 927 flow [2023-08-27 01:10:22,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=927, PETRI_PLACES=109, PETRI_TRANSITIONS=111} [2023-08-27 01:10:22,821 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 30 predicate places. [2023-08-27 01:10:22,821 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 111 transitions, 927 flow [2023-08-27 01:10:22,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 142.35294117647058) internal successors, (2420), 17 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:22,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:10:22,822 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-27 01:10:22,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-27 01:10:23,022 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 01:10:23,023 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:10:23,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:10:23,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1341579233, now seen corresponding path program 2 times [2023-08-27 01:10:23,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:10:23,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091725572] [2023-08-27 01:10:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:10:23,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:10:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:10:23,108 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 01:10:23,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:10:23,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091725572] [2023-08-27 01:10:23,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091725572] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:10:23,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233648707] [2023-08-27 01:10:23,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:10:23,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:10:23,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:10:23,113 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 01:10:23,116 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 01:10:23,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 01:10:23,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:10:23,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 01:10:23,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:10:23,526 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-27 01:10:23,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:10:23,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233648707] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:10:23,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:10:23,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-27 01:10:23,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553428942] [2023-08-27 01:10:23,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:10:23,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:10:23,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:10:23,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:10:23,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-27 01:10:23,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 486 [2023-08-27 01:10:23,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 111 transitions, 927 flow. Second operand has 4 states, 4 states have (on average 166.25) internal successors, (665), 4 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:23,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:10:23,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 486 [2023-08-27 01:10:23,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:10:33,653 INFO L124 PetriNetUnfolderBase]: 48625/64839 cut-off events. [2023-08-27 01:10:33,653 INFO L125 PetriNetUnfolderBase]: For 126608/126608 co-relation queries the response was YES. [2023-08-27 01:10:33,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167773 conditions, 64839 events. 48625/64839 cut-off events. For 126608/126608 co-relation queries the response was YES. Maximal size of possible extension queue 7065. Compared 448107 event pairs, 28086 based on Foata normal form. 1/23504 useless extension candidates. Maximal degree in co-relation 167701. Up to 64519 conditions per place. [2023-08-27 01:10:34,021 INFO L140 encePairwiseOnDemand]: 483/486 looper letters, 101 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2023-08-27 01:10:34,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 107 transitions, 1079 flow [2023-08-27 01:10:34,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:10:34,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:10:34,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2023-08-27 01:10:34,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3737997256515775 [2023-08-27 01:10:34,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 545 transitions. [2023-08-27 01:10:34,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 545 transitions. [2023-08-27 01:10:34,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:10:34,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 545 transitions. [2023-08-27 01:10:34,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:34,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:34,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:34,028 INFO L175 Difference]: Start difference. First operand has 109 places, 111 transitions, 927 flow. Second operand 3 states and 545 transitions. [2023-08-27 01:10:34,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 107 transitions, 1079 flow [2023-08-27 01:10:34,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 107 transitions, 1016 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-27 01:10:34,223 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 814 flow [2023-08-27 01:10:34,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=814, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2023-08-27 01:10:34,224 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 22 predicate places. [2023-08-27 01:10:34,224 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 814 flow [2023-08-27 01:10:34,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.25) internal successors, (665), 4 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:34,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:10:34,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:10:34,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 01:10:34,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 01:10:34,426 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:10:34,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:10:34,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1113742178, now seen corresponding path program 1 times [2023-08-27 01:10:34,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:10:34,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256402427] [2023-08-27 01:10:34,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:10:34,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:10:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:10:34,774 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 01:10:34,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:10:34,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256402427] [2023-08-27 01:10:34,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256402427] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:10:34,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440078465] [2023-08-27 01:10:34,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:10:34,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:10:34,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:10:34,777 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 01:10:34,802 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 01:10:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:10:35,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 01:10:35,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:10:35,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:10:35,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:10:35,140 INFO L322 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-27 01:10:35,140 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 15 treesize of output 36 [2023-08-27 01:10:35,164 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 01:10:35,197 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 01:10:35,198 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 01:10:35,224 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 01:10:35,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:10:35,244 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 01:10:35,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:10:35,297 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 01:10:35,306 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 01:10:35,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:10:35,591 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:10:35,591 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 28 treesize of output 29 [2023-08-27 01:10:35,600 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:10:35,601 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 123 treesize of output 119 [2023-08-27 01:10:35,608 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 52 [2023-08-27 01:10:35,611 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 106 treesize of output 102 [2023-08-27 01:10:35,615 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 102 treesize of output 94 [2023-08-27 01:10:35,718 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 01:10:35,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440078465] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:10:35,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:10:35,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 01:10:35,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149872897] [2023-08-27 01:10:35,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:10:35,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 01:10:35,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:10:35,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 01:10:35,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=363, Unknown=14, NotChecked=0, Total=462 [2023-08-27 01:10:35,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 486 [2023-08-27 01:10:35,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 814 flow. Second operand has 22 states, 22 states have (on average 139.1818181818182) internal successors, (3062), 22 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:35,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:10:35,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 486 [2023-08-27 01:10:35,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:10:45,749 INFO L124 PetriNetUnfolderBase]: 47803/63391 cut-off events. [2023-08-27 01:10:45,749 INFO L125 PetriNetUnfolderBase]: For 131250/131250 co-relation queries the response was YES. [2023-08-27 01:10:45,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166431 conditions, 63391 events. 47803/63391 cut-off events. For 131250/131250 co-relation queries the response was YES. Maximal size of possible extension queue 5707. Compared 428936 event pairs, 14326 based on Foata normal form. 24/23651 useless extension candidates. Maximal degree in co-relation 166412. Up to 56645 conditions per place. [2023-08-27 01:10:46,247 INFO L140 encePairwiseOnDemand]: 477/486 looper letters, 138 selfloop transitions, 27 changer transitions 0/167 dead transitions. [2023-08-27 01:10:46,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 167 transitions, 1258 flow [2023-08-27 01:10:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:10:46,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:10:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1230 transitions. [2023-08-27 01:10:46,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31635802469135804 [2023-08-27 01:10:46,249 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1230 transitions. [2023-08-27 01:10:46,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1230 transitions. [2023-08-27 01:10:46,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:10:46,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1230 transitions. [2023-08-27 01:10:46,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 153.75) internal successors, (1230), 8 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:46,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 486.0) internal successors, (4374), 9 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:46,254 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 486.0) internal successors, (4374), 9 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:46,254 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 814 flow. Second operand 8 states and 1230 transitions. [2023-08-27 01:10:46,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 167 transitions, 1258 flow [2023-08-27 01:10:46,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 167 transitions, 1251 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 01:10:46,495 INFO L231 Difference]: Finished difference. Result has 107 places, 106 transitions, 846 flow [2023-08-27 01:10:46,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=846, PETRI_PLACES=107, PETRI_TRANSITIONS=106} [2023-08-27 01:10:46,496 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 28 predicate places. [2023-08-27 01:10:46,496 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 106 transitions, 846 flow [2023-08-27 01:10:46,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 139.1818181818182) internal successors, (3062), 22 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:46,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:10:46,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:10:46,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 01:10:46,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 01:10:46,703 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:10:46,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:10:46,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1113741617, now seen corresponding path program 1 times [2023-08-27 01:10:46,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:10:46,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120653956] [2023-08-27 01:10:46,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:10:46,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:10:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:10:46,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 01:10:46,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:10:46,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120653956] [2023-08-27 01:10:46,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120653956] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:10:46,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411653350] [2023-08-27 01:10:46,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:10:46,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:10:46,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:10:46,759 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 01:10:46,771 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 01:10:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:10:47,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:10:47,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:10:47,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 01:10:47,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:10:47,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411653350] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:10:47,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:10:47,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 01:10:47,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697611750] [2023-08-27 01:10:47,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:10:47,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:10:47,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:10:47,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:10:47,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:10:47,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 486 [2023-08-27 01:10:47,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 106 transitions, 846 flow. Second operand has 4 states, 4 states have (on average 184.25) internal successors, (737), 4 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:47,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:10:47,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 486 [2023-08-27 01:10:47,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:10:55,993 INFO L124 PetriNetUnfolderBase]: 44223/58557 cut-off events. [2023-08-27 01:10:55,993 INFO L125 PetriNetUnfolderBase]: For 143613/143613 co-relation queries the response was YES. [2023-08-27 01:10:56,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154833 conditions, 58557 events. 44223/58557 cut-off events. For 143613/143613 co-relation queries the response was YES. Maximal size of possible extension queue 6281. Compared 393062 event pairs, 24478 based on Foata normal form. 610/22573 useless extension candidates. Maximal degree in co-relation 154813. Up to 32222 conditions per place. [2023-08-27 01:10:56,337 INFO L140 encePairwiseOnDemand]: 482/486 looper letters, 147 selfloop transitions, 10 changer transitions 0/159 dead transitions. [2023-08-27 01:10:56,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 159 transitions, 1289 flow [2023-08-27 01:10:56,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:10:56,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:10:56,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 837 transitions. [2023-08-27 01:10:56,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2023-08-27 01:10:56,338 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 837 transitions. [2023-08-27 01:10:56,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 837 transitions. [2023-08-27 01:10:56,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:10:56,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 837 transitions. [2023-08-27 01:10:56,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 209.25) internal successors, (837), 4 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:56,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 486.0) internal successors, (2430), 5 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:56,341 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 486.0) internal successors, (2430), 5 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:56,342 INFO L175 Difference]: Start difference. First operand has 107 places, 106 transitions, 846 flow. Second operand 4 states and 837 transitions. [2023-08-27 01:10:56,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 159 transitions, 1289 flow [2023-08-27 01:10:56,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 159 transitions, 1253 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-27 01:10:56,461 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 791 flow [2023-08-27 01:10:56,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=791, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2023-08-27 01:10:56,462 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 25 predicate places. [2023-08-27 01:10:56,462 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 791 flow [2023-08-27 01:10:56,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.25) internal successors, (737), 4 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:56,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:10:56,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:10:56,468 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 01:10:56,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:10:56,663 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:10:56,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:10:56,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1113741775, now seen corresponding path program 1 times [2023-08-27 01:10:56,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:10:56,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693416413] [2023-08-27 01:10:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:10:56,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:10:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:10:56,756 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 01:10:56,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:10:56,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693416413] [2023-08-27 01:10:56,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693416413] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:10:56,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21478879] [2023-08-27 01:10:56,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:10:56,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:10:56,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:10:56,758 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 01:10:56,761 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 01:10:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:10:57,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:10:57,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:10:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:10:57,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:10:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:10:57,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21478879] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:10:57,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:10:57,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 01:10:57,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043162251] [2023-08-27 01:10:57,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:10:57,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 01:10:57,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:10:57,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 01:10:57,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-08-27 01:10:57,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 486 [2023-08-27 01:10:57,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 791 flow. Second operand has 14 states, 14 states have (on average 152.42857142857142) internal successors, (2134), 14 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:57,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:10:57,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 486 [2023-08-27 01:10:57,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:11:04,318 INFO L124 PetriNetUnfolderBase]: 33002/43574 cut-off events. [2023-08-27 01:11:04,318 INFO L125 PetriNetUnfolderBase]: For 111184/111184 co-relation queries the response was YES. [2023-08-27 01:11:04,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117131 conditions, 43574 events. 33002/43574 cut-off events. For 111184/111184 co-relation queries the response was YES. Maximal size of possible extension queue 3795. Compared 275497 event pairs, 18318 based on Foata normal form. 1824/18880 useless extension candidates. Maximal degree in co-relation 117113. Up to 29119 conditions per place. [2023-08-27 01:11:04,543 INFO L140 encePairwiseOnDemand]: 472/486 looper letters, 181 selfloop transitions, 22 changer transitions 0/205 dead transitions. [2023-08-27 01:11:04,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 205 transitions, 1605 flow [2023-08-27 01:11:04,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 01:11:04,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 01:11:04,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1518 transitions. [2023-08-27 01:11:04,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34705075445816186 [2023-08-27 01:11:04,545 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1518 transitions. [2023-08-27 01:11:04,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1518 transitions. [2023-08-27 01:11:04,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:11:04,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1518 transitions. [2023-08-27 01:11:04,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 168.66666666666666) internal successors, (1518), 9 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:04,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 486.0) internal successors, (4860), 10 states have internal predecessors, (4860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:04,550 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 486.0) internal successors, (4860), 10 states have internal predecessors, (4860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:04,550 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 791 flow. Second operand 9 states and 1518 transitions. [2023-08-27 01:11:04,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 205 transitions, 1605 flow [2023-08-27 01:11:04,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 205 transitions, 1573 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:11:04,610 INFO L231 Difference]: Finished difference. Result has 113 places, 113 transitions, 1023 flow [2023-08-27 01:11:04,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1023, PETRI_PLACES=113, PETRI_TRANSITIONS=113} [2023-08-27 01:11:04,610 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 34 predicate places. [2023-08-27 01:11:04,611 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 113 transitions, 1023 flow [2023-08-27 01:11:04,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 152.42857142857142) internal successors, (2134), 14 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:04,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:11:04,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:11:04,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 01:11:04,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:11:04,817 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:11:04,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:11:04,817 INFO L85 PathProgramCache]: Analyzing trace with hash -158260820, now seen corresponding path program 1 times [2023-08-27 01:11:04,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:11:04,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306866392] [2023-08-27 01:11:04,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:04,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:11:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:04,915 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 01:11:04,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:11:04,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306866392] [2023-08-27 01:11:04,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306866392] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:11:04,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654619216] [2023-08-27 01:11:04,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:04,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:11:04,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:11:04,921 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 01:11:04,924 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 01:11:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:05,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 01:11:05,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:11:05,332 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 01:11:05,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:11:05,372 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 01:11:05,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654619216] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:11:05,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:11:05,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 01:11:05,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765854977] [2023-08-27 01:11:05,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:11:05,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 01:11:05,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:11:05,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 01:11:05,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-27 01:11:05,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 486 [2023-08-27 01:11:05,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 113 transitions, 1023 flow. Second operand has 14 states, 14 states have (on average 147.71428571428572) internal successors, (2068), 14 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:05,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:11:05,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 486 [2023-08-27 01:11:05,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:11:08,961 INFO L124 PetriNetUnfolderBase]: 16695/24765 cut-off events. [2023-08-27 01:11:08,962 INFO L125 PetriNetUnfolderBase]: For 85447/85447 co-relation queries the response was YES. [2023-08-27 01:11:09,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75611 conditions, 24765 events. 16695/24765 cut-off events. For 85447/85447 co-relation queries the response was YES. Maximal size of possible extension queue 1989. Compared 168492 event pairs, 13760 based on Foata normal form. 0/13207 useless extension candidates. Maximal degree in co-relation 75589. Up to 22241 conditions per place. [2023-08-27 01:11:09,080 INFO L140 encePairwiseOnDemand]: 472/486 looper letters, 152 selfloop transitions, 14 changer transitions 0/172 dead transitions. [2023-08-27 01:11:09,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 172 transitions, 1665 flow [2023-08-27 01:11:09,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:11:09,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:11:09,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1287 transitions. [2023-08-27 01:11:09,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33101851851851855 [2023-08-27 01:11:09,082 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1287 transitions. [2023-08-27 01:11:09,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1287 transitions. [2023-08-27 01:11:09,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:11:09,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1287 transitions. [2023-08-27 01:11:09,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 160.875) internal successors, (1287), 8 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:09,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 486.0) internal successors, (4374), 9 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:09,086 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 486.0) internal successors, (4374), 9 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:09,086 INFO L175 Difference]: Start difference. First operand has 113 places, 113 transitions, 1023 flow. Second operand 8 states and 1287 transitions. [2023-08-27 01:11:09,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 172 transitions, 1665 flow [2023-08-27 01:11:09,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 172 transitions, 1639 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-27 01:11:09,148 INFO L231 Difference]: Finished difference. Result has 117 places, 115 transitions, 1055 flow [2023-08-27 01:11:09,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1055, PETRI_PLACES=117, PETRI_TRANSITIONS=115} [2023-08-27 01:11:09,148 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2023-08-27 01:11:09,148 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 1055 flow [2023-08-27 01:11:09,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 147.71428571428572) internal successors, (2068), 14 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:09,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:11:09,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:11:09,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 01:11:09,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:11:09,353 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:11:09,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:11:09,353 INFO L85 PathProgramCache]: Analyzing trace with hash -859366514, now seen corresponding path program 1 times [2023-08-27 01:11:09,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:11:09,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552853897] [2023-08-27 01:11:09,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:09,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:11:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:09,650 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 01:11:09,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:11:09,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552853897] [2023-08-27 01:11:09,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552853897] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:11:09,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990343700] [2023-08-27 01:11:09,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:09,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:11:09,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:11:09,653 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 01:11:09,680 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 01:11:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:10,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 01:11:10,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:11:10,120 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 01:11:10,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:11:10,145 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 01:11:10,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:11:10,198 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 01:11:10,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:11:10,223 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 01:11:10,237 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 01:11:10,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:11:10,376 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:11:10,376 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 28 treesize of output 29 [2023-08-27 01:11:10,385 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:11:10,386 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 1953 treesize of output 1889 [2023-08-27 01:11:10,396 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 50 treesize of output 42 [2023-08-27 01:11:10,403 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 53 treesize of output 51 [2023-08-27 01:11:10,406 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 51 treesize of output 47 [2023-08-27 01:11:10,473 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 01:11:10,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990343700] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:11:10,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:11:10,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 01:11:10,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049506318] [2023-08-27 01:11:10,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:11:10,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 01:11:10,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:11:10,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 01:11:10,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=373, Unknown=10, NotChecked=0, Total=462 [2023-08-27 01:11:10,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 486 [2023-08-27 01:11:10,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 115 transitions, 1055 flow. Second operand has 22 states, 22 states have (on average 140.4090909090909) internal successors, (3089), 22 states have internal predecessors, (3089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:10,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:11:10,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 486 [2023-08-27 01:11:10,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:11:15,646 INFO L124 PetriNetUnfolderBase]: 22469/29915 cut-off events. [2023-08-27 01:11:15,646 INFO L125 PetriNetUnfolderBase]: For 83516/83756 co-relation queries the response was YES. [2023-08-27 01:11:15,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93749 conditions, 29915 events. 22469/29915 cut-off events. For 83516/83756 co-relation queries the response was YES. Maximal size of possible extension queue 3523. Compared 189365 event pairs, 6376 based on Foata normal form. 588/12462 useless extension candidates. Maximal degree in co-relation 93725. Up to 12120 conditions per place. [2023-08-27 01:11:15,817 INFO L140 encePairwiseOnDemand]: 472/486 looper letters, 120 selfloop transitions, 46 changer transitions 0/169 dead transitions. [2023-08-27 01:11:15,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 169 transitions, 1572 flow [2023-08-27 01:11:15,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:11:15,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:11:15,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1083 transitions. [2023-08-27 01:11:15,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.318342151675485 [2023-08-27 01:11:15,819 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1083 transitions. [2023-08-27 01:11:15,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1083 transitions. [2023-08-27 01:11:15,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:11:15,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1083 transitions. [2023-08-27 01:11:15,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.71428571428572) internal successors, (1083), 7 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:15,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 486.0) internal successors, (3888), 8 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:15,822 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 486.0) internal successors, (3888), 8 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:15,822 INFO L175 Difference]: Start difference. First operand has 117 places, 115 transitions, 1055 flow. Second operand 7 states and 1083 transitions. [2023-08-27 01:11:15,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 169 transitions, 1572 flow [2023-08-27 01:11:15,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 169 transitions, 1550 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 01:11:15,952 INFO L231 Difference]: Finished difference. Result has 120 places, 118 transitions, 1232 flow [2023-08-27 01:11:15,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1232, PETRI_PLACES=120, PETRI_TRANSITIONS=118} [2023-08-27 01:11:15,952 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 41 predicate places. [2023-08-27 01:11:15,952 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 118 transitions, 1232 flow [2023-08-27 01:11:15,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 140.4090909090909) internal successors, (3089), 22 states have internal predecessors, (3089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:15,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:11:15,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:11:15,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 01:11:16,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:11:16,153 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 01:11:16,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:11:16,154 INFO L85 PathProgramCache]: Analyzing trace with hash -859366512, now seen corresponding path program 1 times [2023-08-27 01:11:16,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:11:16,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357905933] [2023-08-27 01:11:16,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:16,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:11:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:16,511 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 01:11:16,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:11:16,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357905933] [2023-08-27 01:11:16,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357905933] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:11:16,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974977590] [2023-08-27 01:11:16,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:16,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:11:16,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:11:16,513 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 01:11:16,540 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 01:11:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:16,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-27 01:11:16,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:11:16,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:11:16,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:11:16,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:11:16,918 INFO L322 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-27 01:11:16,918 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2023-08-27 01:11:16,952 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 01:11:16,985 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 01:11:16,986 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 01:11:17,016 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 01:11:17,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:11:17,040 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 16 treesize of output 18 [2023-08-27 01:11:17,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:11:17,091 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 01:11:17,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:11:17,121 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 01:11:17,129 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 01:11:17,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:11:17,149 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1019 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1019) c_~A~0.base) (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4)))))) is different from false [2023-08-27 01:11:17,215 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1019 (Array Int Int)) (v_ArrVal_1018 (Array Int Int)) (v_ArrVal_1017 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1017) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1018) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1019) c_~A~0.base) c_~A~0.offset)))) is different from false