/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 07:46:53,379 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 07:46:53,463 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 07:46:53,467 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 07:46:53,468 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 07:46:53,498 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 07:46:53,499 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 07:46:53,499 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 07:46:53,500 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 07:46:53,503 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 07:46:53,504 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 07:46:53,504 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 07:46:53,504 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 07:46:53,505 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 07:46:53,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 07:46:53,506 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 07:46:53,506 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 07:46:53,506 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 07:46:53,506 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 07:46:53,507 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 07:46:53,507 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 07:46:53,508 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 07:46:53,508 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 07:46:53,508 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 07:46:53,508 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 07:46:53,509 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 07:46:53,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 07:46:53,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:46:53,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 07:46:53,510 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 07:46:53,510 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 07:46:53,511 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 07:46:53,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 07:46:53,511 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 07:46:53,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 07:46:53,511 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 07:46:53,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 07:46:53,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 07:46:53,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 07:46:53,866 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 07:46:53,866 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 07:46:53,867 INFO L431 ainManager$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 07:46:54,927 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 07:46:55,144 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 07:46:55,145 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c [2023-08-27 07:46:55,154 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac71393c1/fadd67c0c4c64815be34a322f46ad3c7/FLAGfcb990013 [2023-08-27 07:46:55,172 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac71393c1/fadd67c0c4c64815be34a322f46ad3c7 [2023-08-27 07:46:55,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 07:46:55,175 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 07:46:55,176 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 07:46:55,176 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 07:46:55,178 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 07:46:55,180 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:46:55" (1/1) ... [2023-08-27 07:46:55,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c41a7a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:55, skipping insertion in model container [2023-08-27 07:46:55,181 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:46:55" (1/1) ... [2023-08-27 07:46:55,209 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 07:46:55,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:46:55,403 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 07:46:55,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:46:55,453 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:46:55,453 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:46:55,459 INFO L206 MainTranslator]: Completed translation [2023-08-27 07:46:55,459 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:55 WrapperNode [2023-08-27 07:46:55,459 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 07:46:55,460 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 07:46:55,461 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 07:46:55,461 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 07:46:55,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:55" (1/1) ... [2023-08-27 07:46:55,485 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:55" (1/1) ... [2023-08-27 07:46:55,528 INFO L138 Inliner]: procedures = 25, calls = 59, calls flagged for inlining = 17, calls inlined = 29, statements flattened = 385 [2023-08-27 07:46:55,529 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 07:46:55,529 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 07:46:55,529 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 07:46:55,529 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 07:46:55,538 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:55" (1/1) ... [2023-08-27 07:46:55,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:55" (1/1) ... [2023-08-27 07:46:55,542 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:55" (1/1) ... [2023-08-27 07:46:55,542 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:55" (1/1) ... [2023-08-27 07:46:55,550 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:55" (1/1) ... [2023-08-27 07:46:55,554 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:55" (1/1) ... [2023-08-27 07:46:55,555 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:55" (1/1) ... [2023-08-27 07:46:55,557 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:55" (1/1) ... [2023-08-27 07:46:55,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 07:46:55,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 07:46:55,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 07:46:55,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 07:46:55,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:55" (1/1) ... [2023-08-27 07:46:55,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:46:55,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:46:55,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 07:46:55,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 07:46:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 07:46:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 07:46:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 07:46:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 07:46:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 07:46:55,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 07:46:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 07:46:55,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 07:46:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 07:46:55,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 07:46:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 07:46:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 07:46:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 07:46:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 07:46:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 07:46:55,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 07:46:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 07:46:55,619 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 07:46:55,728 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 07:46:55,730 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 07:46:56,347 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 07:46:57,550 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 07:46:57,551 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-27 07:46:57,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:46:57 BoogieIcfgContainer [2023-08-27 07:46:57,555 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 07:46:57,557 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 07:46:57,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 07:46:57,560 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 07:46:57,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:46:55" (1/3) ... [2023-08-27 07:46:57,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb3c54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:46:57, skipping insertion in model container [2023-08-27 07:46:57,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:55" (2/3) ... [2023-08-27 07:46:57,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb3c54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:46:57, skipping insertion in model container [2023-08-27 07:46:57,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:46:57" (3/3) ... [2023-08-27 07:46:57,563 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2023-08-27 07:46:57,578 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 07:46:57,578 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 47 error locations. [2023-08-27 07:46:57,579 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 07:46:57,938 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 07:46:57,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 245 transitions, 514 flow [2023-08-27 07:46:58,119 INFO L124 PetriNetUnfolderBase]: 16/242 cut-off events. [2023-08-27 07:46:58,120 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 07:46:58,125 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 07:46:58,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 245 transitions, 514 flow [2023-08-27 07:46:58,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 231 transitions, 480 flow [2023-08-27 07:46:58,134 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 07:46:58,141 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 225 places, 231 transitions, 480 flow [2023-08-27 07:46:58,143 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 225 places, 231 transitions, 480 flow [2023-08-27 07:46:58,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 231 transitions, 480 flow [2023-08-27 07:46:58,273 INFO L124 PetriNetUnfolderBase]: 16/231 cut-off events. [2023-08-27 07:46:58,273 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 07:46:58,274 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 07:46:58,281 INFO L119 LiptonReduction]: Number of co-enabled transitions 6720 [2023-08-27 07:47:31,465 INFO L134 LiptonReduction]: Checked pairs total: 11552 [2023-08-27 07:47:31,466 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-08-27 07:47:31,478 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 07:47:31,483 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;@6d7d705b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 07:47:31,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2023-08-27 07:47:31,485 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 07:47:31,485 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 07:47:31,486 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 07:47:31,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:47:31,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 07:47:31,487 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 07:47:31,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:47:31,491 INFO L85 PathProgramCache]: Analyzing trace with hash 54601, now seen corresponding path program 1 times [2023-08-27 07:47:31,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:47:31,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048437922] [2023-08-27 07:47:31,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:47:31,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:47:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:47:31,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:47:31,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:47:31,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048437922] [2023-08-27 07:47:31,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048437922] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:47:31,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:47:31,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:47:31,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713418510] [2023-08-27 07:47:31,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:47:31,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:47:31,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:47:31,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:47:31,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:47:31,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 486 [2023-08-27 07:47:31,841 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 07:47:31,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:47:31,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 486 [2023-08-27 07:47:31,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:47:36,108 INFO L124 PetriNetUnfolderBase]: 14890/18667 cut-off events. [2023-08-27 07:47:36,108 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2023-08-27 07:47:36,123 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 07:47:36,214 INFO L140 encePairwiseOnDemand]: 459/486 looper letters, 52 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-08-27 07:47:36,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 252 flow [2023-08-27 07:47:36,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:47:36,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:47:36,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2023-08-27 07:47:36,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40809327846364885 [2023-08-27 07:47:36,235 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2023-08-27 07:47:36,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2023-08-27 07:47:36,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:47:36,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2023-08-27 07:47:36,247 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 07:47:36,253 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 07:47:36,254 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 07:47:36,256 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 166 flow. Second operand 3 states and 595 transitions. [2023-08-27 07:47:36,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 252 flow [2023-08-27 07:47:36,305 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 07:47:36,308 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 162 flow [2023-08-27 07:47:36,309 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 07:47:36,312 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -20 predicate places. [2023-08-27 07:47:36,313 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 162 flow [2023-08-27 07:47:36,313 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 07:47:36,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:47:36,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 07:47:36,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 07:47:36,314 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 07:47:36,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:47:36,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1694315, now seen corresponding path program 1 times [2023-08-27 07:47:36,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:47:36,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077149040] [2023-08-27 07:47:36,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:47:36,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:47:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:47:36,404 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 07:47:36,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:47:36,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077149040] [2023-08-27 07:47:36,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077149040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:47:36,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:47:36,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:47:36,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348839128] [2023-08-27 07:47:36,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:47:36,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:47:36,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:47:36,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:47:36,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:47:36,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 486 [2023-08-27 07:47:36,408 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 07:47:36,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:47:36,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 486 [2023-08-27 07:47:36,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:47:40,140 INFO L124 PetriNetUnfolderBase]: 14890/18665 cut-off events. [2023-08-27 07:47:40,140 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-27 07:47:40,147 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 07:47:40,209 INFO L140 encePairwiseOnDemand]: 482/486 looper letters, 52 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2023-08-27 07:47:40,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 264 flow [2023-08-27 07:47:40,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:47:40,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:47:40,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 569 transitions. [2023-08-27 07:47:40,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39026063100137176 [2023-08-27 07:47:40,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 569 transitions. [2023-08-27 07:47:40,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 569 transitions. [2023-08-27 07:47:40,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:47:40,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 569 transitions. [2023-08-27 07:47:40,213 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 07:47:40,216 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 07:47:40,217 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 07:47:40,217 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 162 flow. Second operand 3 states and 569 transitions. [2023-08-27 07:47:40,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 264 flow [2023-08-27 07:47:40,218 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 07:47:40,219 INFO L231 Difference]: Finished difference. Result has 57 places, 58 transitions, 150 flow [2023-08-27 07:47:40,219 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 07:47:40,220 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -22 predicate places. [2023-08-27 07:47:40,220 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 58 transitions, 150 flow [2023-08-27 07:47:40,221 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 07:47:40,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:47:40,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 07:47:40,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 07:47:40,221 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 07:47:40,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:47:40,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1694317, now seen corresponding path program 1 times [2023-08-27 07:47:40,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:47:40,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398272784] [2023-08-27 07:47:40,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:47:40,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:47:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:47:40,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:47:40,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:47:40,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398272784] [2023-08-27 07:47:40,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398272784] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:47:40,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113801074] [2023-08-27 07:47:40,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:47:40,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:47:40,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:47:40,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:47:40,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 07:47:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:47:40,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:47:40,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:47:40,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:47:40,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:47:40,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:47:40,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113801074] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:47:40,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:47:40,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 07:47:40,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889256642] [2023-08-27 07:47:40,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:47:40,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 07:47:40,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:47:40,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 07:47:40,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 07:47:40,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 486 [2023-08-27 07:47:40,719 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 07:47:40,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:47:40,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 486 [2023-08-27 07:47:40,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:47:43,931 INFO L124 PetriNetUnfolderBase]: 14896/18677 cut-off events. [2023-08-27 07:47:43,931 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-27 07:47:43,939 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 07:47:44,002 INFO L140 encePairwiseOnDemand]: 479/486 looper letters, 50 selfloop transitions, 17 changer transitions 0/70 dead transitions. [2023-08-27 07:47:44,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 70 transitions, 338 flow [2023-08-27 07:47:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 07:47:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 07:47:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1105 transitions. [2023-08-27 07:47:44,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3789437585733882 [2023-08-27 07:47:44,006 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1105 transitions. [2023-08-27 07:47:44,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1105 transitions. [2023-08-27 07:47:44,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:47:44,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1105 transitions. [2023-08-27 07:47:44,009 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 07:47:44,014 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 07:47:44,015 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 07:47:44,015 INFO L175 Difference]: Start difference. First operand has 57 places, 58 transitions, 150 flow. Second operand 6 states and 1105 transitions. [2023-08-27 07:47:44,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 70 transitions, 338 flow [2023-08-27 07:47:44,016 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 07:47:44,017 INFO L231 Difference]: Finished difference. Result has 63 places, 70 transitions, 262 flow [2023-08-27 07:47:44,018 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 07:47:44,018 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -16 predicate places. [2023-08-27 07:47:44,018 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 70 transitions, 262 flow [2023-08-27 07:47:44,019 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 07:47:44,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:47:44,019 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 07:47:44,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 07:47:44,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:47:44,226 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 07:47:44,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:47:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1062597173, now seen corresponding path program 2 times [2023-08-27 07:47:44,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:47:44,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482460083] [2023-08-27 07:47:44,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:47:44,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:47:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:47:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:47:44,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:47:44,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482460083] [2023-08-27 07:47:44,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482460083] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:47:44,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597834343] [2023-08-27 07:47:44,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:47:44,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:47:44,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:47:44,337 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:47:44,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 07:47:44,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 07:47:44,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:47:44,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 07:47:44,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:47:44,696 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 07:47:44,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:47:44,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597834343] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:47:44,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:47:44,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 07:47:44,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077694435] [2023-08-27 07:47:44,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:47:44,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:47:44,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:47:44,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:47:44,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 07:47:44,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 486 [2023-08-27 07:47:44,700 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 07:47:44,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:47:44,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 486 [2023-08-27 07:47:44,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:47:47,819 INFO L124 PetriNetUnfolderBase]: 14896/18676 cut-off events. [2023-08-27 07:47:47,820 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-08-27 07:47:47,829 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 07:47:47,887 INFO L140 encePairwiseOnDemand]: 483/486 looper letters, 60 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2023-08-27 07:47:47,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 69 transitions, 384 flow [2023-08-27 07:47:47,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:47:47,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:47:47,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2023-08-27 07:47:47,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39300411522633744 [2023-08-27 07:47:47,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 573 transitions. [2023-08-27 07:47:47,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 573 transitions. [2023-08-27 07:47:47,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:47:47,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 573 transitions. [2023-08-27 07:47:47,892 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 07:47:47,895 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 07:47:47,896 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 07:47:47,896 INFO L175 Difference]: Start difference. First operand has 63 places, 70 transitions, 262 flow. Second operand 3 states and 573 transitions. [2023-08-27 07:47:47,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 69 transitions, 384 flow [2023-08-27 07:47:47,898 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 07:47:47,899 INFO L231 Difference]: Finished difference. Result has 63 places, 69 transitions, 238 flow [2023-08-27 07:47:47,899 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 07:47:47,900 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -16 predicate places. [2023-08-27 07:47:47,900 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 69 transitions, 238 flow [2023-08-27 07:47:47,900 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 07:47:47,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:47:47,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 07:47:47,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 07:47:48,107 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 07:47:48,107 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 07:47:48,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:47:48,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1043842473, now seen corresponding path program 1 times [2023-08-27 07:47:48,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:47:48,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089804453] [2023-08-27 07:47:48,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:47:48,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:47:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:47:48,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:47:48,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:47:48,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089804453] [2023-08-27 07:47:48,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089804453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:47:48,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:47:48,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 07:47:48,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843457575] [2023-08-27 07:47:48,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:47:48,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:47:48,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:47:48,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:47:48,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:47:48,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 486 [2023-08-27 07:47:48,262 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 07:47:48,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:47:48,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 486 [2023-08-27 07:47:48,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:47:50,865 INFO L124 PetriNetUnfolderBase]: 12169/15955 cut-off events. [2023-08-27 07:47:50,865 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-27 07:47:50,874 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 07:47:50,928 INFO L140 encePairwiseOnDemand]: 481/486 looper letters, 63 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2023-08-27 07:47:50,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 416 flow [2023-08-27 07:47:50,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:47:50,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:47:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 815 transitions. [2023-08-27 07:47:50,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33539094650205764 [2023-08-27 07:47:50,931 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 815 transitions. [2023-08-27 07:47:50,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 815 transitions. [2023-08-27 07:47:50,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:47:50,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 815 transitions. [2023-08-27 07:47:50,934 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 07:47:50,938 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 07:47:50,939 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 07:47:50,939 INFO L175 Difference]: Start difference. First operand has 63 places, 69 transitions, 238 flow. Second operand 5 states and 815 transitions. [2023-08-27 07:47:50,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 416 flow [2023-08-27 07:47:50,940 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 07:47:50,941 INFO L231 Difference]: Finished difference. Result has 66 places, 69 transitions, 254 flow [2023-08-27 07:47:50,941 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 07:47:50,942 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -13 predicate places. [2023-08-27 07:47:50,942 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 69 transitions, 254 flow [2023-08-27 07:47:50,943 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 07:47:50,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:47:50,943 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 07:47:50,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 07:47:50,943 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 07:47:50,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:47:50,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1999445087, now seen corresponding path program 1 times [2023-08-27 07:47:50,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:47:50,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896205995] [2023-08-27 07:47:50,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:47:50,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:47:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:47:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:47:51,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:47:51,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896205995] [2023-08-27 07:47:51,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896205995] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:47:51,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340183148] [2023-08-27 07:47:51,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:47:51,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:47:51,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:47:51,025 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:47:51,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 07:47:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:47:51,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 07:47:51,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:47:51,380 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 07:47:51,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:47:51,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340183148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:47:51,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:47:51,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-08-27 07:47:51,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615095799] [2023-08-27 07:47:51,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:47:51,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:47:51,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:47:51,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:47:51,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-27 07:47:51,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 486 [2023-08-27 07:47:51,389 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 07:47:51,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:47:51,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 486 [2023-08-27 07:47:51,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:47:54,227 INFO L124 PetriNetUnfolderBase]: 14894/18675 cut-off events. [2023-08-27 07:47:54,228 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-08-27 07:47:54,257 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 07:47:54,313 INFO L140 encePairwiseOnDemand]: 482/486 looper letters, 57 selfloop transitions, 7 changer transitions 1/68 dead transitions. [2023-08-27 07:47:54,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 68 transitions, 375 flow [2023-08-27 07:47:54,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 07:47:54,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 07:47:54,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 674 transitions. [2023-08-27 07:47:54,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34670781893004116 [2023-08-27 07:47:54,316 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 674 transitions. [2023-08-27 07:47:54,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 674 transitions. [2023-08-27 07:47:54,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:47:54,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 674 transitions. [2023-08-27 07:47:54,319 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 07:47:54,322 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 07:47:54,322 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 07:47:54,322 INFO L175 Difference]: Start difference. First operand has 66 places, 69 transitions, 254 flow. Second operand 4 states and 674 transitions. [2023-08-27 07:47:54,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 68 transitions, 375 flow [2023-08-27 07:47:54,324 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 07:47:54,325 INFO L231 Difference]: Finished difference. Result has 65 places, 67 transitions, 231 flow [2023-08-27 07:47:54,325 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 07:47:54,325 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -14 predicate places. [2023-08-27 07:47:54,326 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 67 transitions, 231 flow [2023-08-27 07:47:54,326 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 07:47:54,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:47:54,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:47:54,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 07:47:54,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:47:54,537 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 07:47:54,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:47:54,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1626640783, now seen corresponding path program 1 times [2023-08-27 07:47:54,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:47:54,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505620242] [2023-08-27 07:47:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:47:54,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:47:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:47:54,606 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 07:47:54,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:47:54,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505620242] [2023-08-27 07:47:54,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505620242] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:47:54,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:47:54,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:47:54,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979521848] [2023-08-27 07:47:54,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:47:54,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:47:54,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:47:54,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:47:54,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:47:54,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 486 [2023-08-27 07:47:54,609 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 07:47:54,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:47:54,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 486 [2023-08-27 07:47:54,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:47:58,494 INFO L124 PetriNetUnfolderBase]: 20386/26364 cut-off events. [2023-08-27 07:47:58,494 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2023-08-27 07:47:58,523 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 07:47:58,592 INFO L140 encePairwiseOnDemand]: 481/486 looper letters, 97 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2023-08-27 07:47:58,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 102 transitions, 503 flow [2023-08-27 07:47:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:47:58,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:47:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 634 transitions. [2023-08-27 07:47:58,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348422496570645 [2023-08-27 07:47:58,594 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 634 transitions. [2023-08-27 07:47:58,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 634 transitions. [2023-08-27 07:47:58,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:47:58,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 634 transitions. [2023-08-27 07:47:58,596 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 07:47:58,598 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 07:47:58,599 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 07:47:58,599 INFO L175 Difference]: Start difference. First operand has 65 places, 67 transitions, 231 flow. Second operand 3 states and 634 transitions. [2023-08-27 07:47:58,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 102 transitions, 503 flow [2023-08-27 07:47:58,600 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 07:47:58,602 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 238 flow [2023-08-27 07:47:58,602 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 07:47:58,602 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -15 predicate places. [2023-08-27 07:47:58,603 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 238 flow [2023-08-27 07:47:58,603 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 07:47:58,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:47:58,603 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-27 07:47:58,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 07:47:58,603 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 07:47:58,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:47:58,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1626602621, now seen corresponding path program 1 times [2023-08-27 07:47:58,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:47:58,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484762221] [2023-08-27 07:47:58,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:47:58,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:47:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:47:58,729 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 07:47:58,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:47:58,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484762221] [2023-08-27 07:47:58,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484762221] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:47:58,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142307778] [2023-08-27 07:47:58,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:47:58,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:47:58,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:47:58,731 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:47:58,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 07:47:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:47:59,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 07:47:59,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:47:59,135 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 07:47:59,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:47:59,179 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 07:47:59,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142307778] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:47:59,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:47:59,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2023-08-27 07:47:59,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413392673] [2023-08-27 07:47:59,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:47:59,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 07:47:59,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:47:59,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 07:47:59,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-27 07:47:59,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 486 [2023-08-27 07:47:59,184 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 07:47:59,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:47:59,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 486 [2023-08-27 07:47:59,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:48:06,558 INFO L124 PetriNetUnfolderBase]: 37243/48564 cut-off events. [2023-08-27 07:48:06,558 INFO L125 PetriNetUnfolderBase]: For 1315/1920 co-relation queries the response was YES. [2023-08-27 07:48:06,616 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 07:48:06,757 INFO L140 encePairwiseOnDemand]: 480/486 looper letters, 101 selfloop transitions, 13 changer transitions 0/117 dead transitions. [2023-08-27 07:48:06,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 117 transitions, 589 flow [2023-08-27 07:48:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 07:48:06,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 07:48:06,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1343 transitions. [2023-08-27 07:48:06,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3454218106995885 [2023-08-27 07:48:06,761 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1343 transitions. [2023-08-27 07:48:06,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1343 transitions. [2023-08-27 07:48:06,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:48:06,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1343 transitions. [2023-08-27 07:48:06,764 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 07:48:06,769 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 07:48:06,770 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 07:48:06,770 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 238 flow. Second operand 8 states and 1343 transitions. [2023-08-27 07:48:06,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 117 transitions, 589 flow [2023-08-27 07:48:06,772 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 07:48:06,774 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 272 flow [2023-08-27 07:48:06,774 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 07:48:06,774 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -9 predicate places. [2023-08-27 07:48:06,775 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 272 flow [2023-08-27 07:48:06,776 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 07:48:06,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:48:06,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:48:06,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 07:48:06,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:48:06,985 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 07:48:06,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:48:06,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1626640625, now seen corresponding path program 1 times [2023-08-27 07:48:06,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:48:06,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166442754] [2023-08-27 07:48:06,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:48:06,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:48:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:48:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:48:07,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:48:07,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166442754] [2023-08-27 07:48:07,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166442754] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:48:07,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642284214] [2023-08-27 07:48:07,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:48:07,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:48:07,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:48:07,533 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:48:07,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 07:48:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:48:07,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 07:48:07,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:48:07,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:48:07,928 INFO L322 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-27 07:48:07,929 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 07:48:07,967 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 07:48:08,001 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 07:48:08,001 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 07:48:08,043 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 07:48:08,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:48:08,067 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 07:48:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:48:08,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:48:08,160 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 07:48:08,222 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:48:08,222 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-08-27 07:48:08,231 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:48:08,232 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 117 [2023-08-27 07:48:08,238 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-08-27 07:48:08,243 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-27 07:48:08,301 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 07:48:08,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642284214] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:48:08,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:48:08,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-27 07:48:08,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354441777] [2023-08-27 07:48:08,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:48:08,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 07:48:08,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:48:08,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 07:48:08,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=216, Unknown=2, NotChecked=30, Total=306 [2023-08-27 07:48:08,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 486 [2023-08-27 07:48:08,306 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 07:48:08,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:48:08,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 486 [2023-08-27 07:48:08,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:48:17,866 INFO L124 PetriNetUnfolderBase]: 42439/55636 cut-off events. [2023-08-27 07:48:17,866 INFO L125 PetriNetUnfolderBase]: For 1952/1952 co-relation queries the response was YES. [2023-08-27 07:48:17,925 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 07:48:18,073 INFO L140 encePairwiseOnDemand]: 476/486 looper letters, 100 selfloop transitions, 15 changer transitions 0/117 dead transitions. [2023-08-27 07:48:18,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 117 transitions, 610 flow [2023-08-27 07:48:18,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 07:48:18,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 07:48:18,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1211 transitions. [2023-08-27 07:48:18,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31147119341563784 [2023-08-27 07:48:18,077 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1211 transitions. [2023-08-27 07:48:18,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1211 transitions. [2023-08-27 07:48:18,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:48:18,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1211 transitions. [2023-08-27 07:48:18,080 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 07:48:18,084 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 07:48:18,084 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 07:48:18,085 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 272 flow. Second operand 8 states and 1211 transitions. [2023-08-27 07:48:18,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 117 transitions, 610 flow [2023-08-27 07:48:18,086 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 07:48:18,088 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 323 flow [2023-08-27 07:48:18,088 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 07:48:18,089 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2023-08-27 07:48:18,089 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 323 flow [2023-08-27 07:48:18,090 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 07:48:18,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:48:18,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:48:18,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 07:48:18,301 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 07:48:18,301 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 07:48:18,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:48:18,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1626640631, now seen corresponding path program 1 times [2023-08-27 07:48:18,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:48:18,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649338021] [2023-08-27 07:48:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:48:18,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:48:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:48:18,413 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 07:48:18,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:48:18,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649338021] [2023-08-27 07:48:18,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649338021] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:48:18,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:48:18,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:48:18,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602605894] [2023-08-27 07:48:18,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:48:18,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:48:18,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:48:18,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:48:18,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:48:18,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 486 [2023-08-27 07:48:18,416 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 07:48:18,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:48:18,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 486 [2023-08-27 07:48:18,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:48:27,695 INFO L124 PetriNetUnfolderBase]: 41265/53838 cut-off events. [2023-08-27 07:48:27,695 INFO L125 PetriNetUnfolderBase]: For 5406/6010 co-relation queries the response was YES. [2023-08-27 07:48:27,776 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 07:48:27,928 INFO L140 encePairwiseOnDemand]: 482/486 looper letters, 110 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2023-08-27 07:48:27,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 117 transitions, 643 flow [2023-08-27 07:48:27,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:48:27,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:48:27,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-08-27 07:48:27,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4430727023319616 [2023-08-27 07:48:27,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-08-27 07:48:27,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-08-27 07:48:27,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:48:27,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-08-27 07:48:27,931 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 07:48:27,933 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 07:48:27,933 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 07:48:27,933 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 323 flow. Second operand 3 states and 646 transitions. [2023-08-27 07:48:27,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 117 transitions, 643 flow [2023-08-27 07:48:27,940 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 07:48:27,942 INFO L231 Difference]: Finished difference. Result has 80 places, 79 transitions, 334 flow [2023-08-27 07:48:27,942 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 07:48:27,943 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2023-08-27 07:48:27,943 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 79 transitions, 334 flow [2023-08-27 07:48:27,943 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 07:48:27,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:48:27,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:48:27,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 07:48:27,943 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 07:48:27,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:48:27,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1626640622, now seen corresponding path program 1 times [2023-08-27 07:48:27,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:48:27,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053516450] [2023-08-27 07:48:27,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:48:27,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:48:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:48:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:48:28,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:48:28,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053516450] [2023-08-27 07:48:28,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053516450] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:48:28,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369472549] [2023-08-27 07:48:28,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:48:28,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:48:28,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:48:28,181 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:48:28,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 07:48:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:48:28,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 07:48:28,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:48:28,554 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 07:48:28,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:48:28,579 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 07:48:28,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:48:28,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:48:28,653 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:48:28,654 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-08-27 07:48:28,660 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:48:28,661 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-08-27 07:48:28,664 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-08-27 07:48:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:48:28,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369472549] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:48:28,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:48:28,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 07:48:28,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341404917] [2023-08-27 07:48:28,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:48:28,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 07:48:28,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:48:28,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 07:48:28,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=145, Unknown=1, NotChecked=0, Total=182 [2023-08-27 07:48:28,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 486 [2023-08-27 07:48:28,702 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 07:48:28,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:48:28,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 486 [2023-08-27 07:48:28,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:48:41,563 INFO L124 PetriNetUnfolderBase]: 54581/72758 cut-off events. [2023-08-27 07:48:41,563 INFO L125 PetriNetUnfolderBase]: For 13942/13942 co-relation queries the response was YES. [2023-08-27 07:48:41,673 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 07:48:41,871 INFO L140 encePairwiseOnDemand]: 468/486 looper letters, 78 selfloop transitions, 36 changer transitions 0/116 dead transitions. [2023-08-27 07:48:41,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 116 transitions, 657 flow [2023-08-27 07:48:41,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 07:48:41,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 07:48:41,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1384 transitions. [2023-08-27 07:48:41,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31641518061271146 [2023-08-27 07:48:41,875 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1384 transitions. [2023-08-27 07:48:41,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1384 transitions. [2023-08-27 07:48:41,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:48:41,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1384 transitions. [2023-08-27 07:48:41,878 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 07:48:41,883 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 07:48:41,884 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 07:48:41,884 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 334 flow. Second operand 9 states and 1384 transitions. [2023-08-27 07:48:41,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 116 transitions, 657 flow [2023-08-27 07:48:41,889 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 07:48:41,890 INFO L231 Difference]: Finished difference. Result has 88 places, 88 transitions, 452 flow [2023-08-27 07:48:41,891 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 07:48:41,891 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 9 predicate places. [2023-08-27 07:48:41,891 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 88 transitions, 452 flow [2023-08-27 07:48:41,892 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 07:48:41,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:48:41,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:48:41,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 07:48:42,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:48:42,099 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 07:48:42,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:48:42,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1626640621, now seen corresponding path program 1 times [2023-08-27 07:48:42,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:48:42,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463173291] [2023-08-27 07:48:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:48:42,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:48:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:48:42,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:48:42,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:48:42,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463173291] [2023-08-27 07:48:42,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463173291] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:48:42,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48956757] [2023-08-27 07:48:42,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:48:42,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:48:42,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:48:42,336 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:48:42,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 07:48:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:48:42,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 07:48:42,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:48:42,689 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 07:48:42,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:48:42,714 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 07:48:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:48:42,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:48:42,773 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:48:42,774 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-08-27 07:48:42,780 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:48:42,781 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-08-27 07:48:42,785 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-08-27 07:48:42,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:48:42,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48956757] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:48:42,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:48:42,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 07:48:42,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473563797] [2023-08-27 07:48:42,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:48:42,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 07:48:42,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:48:42,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 07:48:42,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=145, Unknown=1, NotChecked=0, Total=182 [2023-08-27 07:48:42,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 486 [2023-08-27 07:48:42,820 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 07:48:42,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:48:42,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 486 [2023-08-27 07:48:42,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:48:56,168 INFO L124 PetriNetUnfolderBase]: 57395/76770 cut-off events. [2023-08-27 07:48:56,168 INFO L125 PetriNetUnfolderBase]: For 36628/36628 co-relation queries the response was YES. [2023-08-27 07:48:56,309 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 07:48:56,529 INFO L140 encePairwiseOnDemand]: 468/486 looper letters, 78 selfloop transitions, 39 changer transitions 0/119 dead transitions. [2023-08-27 07:48:56,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 119 transitions, 773 flow [2023-08-27 07:48:56,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 07:48:56,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 07:48:56,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1383 transitions. [2023-08-27 07:48:56,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3161865569272977 [2023-08-27 07:48:56,532 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1383 transitions. [2023-08-27 07:48:56,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1383 transitions. [2023-08-27 07:48:56,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:48:56,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1383 transitions. [2023-08-27 07:48:56,534 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 07:48:56,538 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 07:48:56,539 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 07:48:56,539 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 452 flow. Second operand 9 states and 1383 transitions. [2023-08-27 07:48:56,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 119 transitions, 773 flow [2023-08-27 07:48:56,557 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 07:48:56,559 INFO L231 Difference]: Finished difference. Result has 93 places, 92 transitions, 543 flow [2023-08-27 07:48:56,559 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 07:48:56,560 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 14 predicate places. [2023-08-27 07:48:56,561 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 92 transitions, 543 flow [2023-08-27 07:48:56,561 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 07:48:56,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:48:56,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:48:56,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 07:48:56,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:48:56,768 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 07:48:56,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:48:56,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1626640624, now seen corresponding path program 1 times [2023-08-27 07:48:56,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:48:56,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20195553] [2023-08-27 07:48:56,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:48:56,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:48:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:48:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:48:57,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:48:57,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20195553] [2023-08-27 07:48:57,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20195553] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:48:57,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113386542] [2023-08-27 07:48:57,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:48:57,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:48:57,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:48:57,066 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:48:57,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 07:48:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:48:57,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-27 07:48:57,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:48:57,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:48:57,432 INFO L322 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-27 07:48:57,433 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 07:48:57,466 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 07:48:57,495 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 07:48:57,496 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 07:48:57,525 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 07:48:57,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:48:57,547 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 07:48:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:48:57,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:48:57,619 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 07:48:57,650 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:48:57,651 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 07:48:57,659 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:48:57,659 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 07:48:57,663 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 07:48:57,668 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 07:48:57,745 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 07:48:57,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113386542] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:48:57,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:48:57,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-27 07:48:57,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742683205] [2023-08-27 07:48:57,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:48:57,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 07:48:57,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:48:57,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 07:48:57,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=212, Unknown=3, NotChecked=30, Total=306 [2023-08-27 07:48:57,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 486 [2023-08-27 07:48:57,750 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 07:48:57,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:48:57,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 486 [2023-08-27 07:48:57,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:49:10,805 INFO L124 PetriNetUnfolderBase]: 55787/75134 cut-off events. [2023-08-27 07:49:10,805 INFO L125 PetriNetUnfolderBase]: For 70094/70094 co-relation queries the response was YES. [2023-08-27 07:49:10,926 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 07:49:11,139 INFO L140 encePairwiseOnDemand]: 476/486 looper letters, 99 selfloop transitions, 19 changer transitions 0/120 dead transitions. [2023-08-27 07:49:11,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 120 transitions, 853 flow [2023-08-27 07:49:11,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 07:49:11,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 07:49:11,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1206 transitions. [2023-08-27 07:49:11,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3101851851851852 [2023-08-27 07:49:11,141 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1206 transitions. [2023-08-27 07:49:11,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1206 transitions. [2023-08-27 07:49:11,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:49:11,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1206 transitions. [2023-08-27 07:49:11,143 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 07:49:11,147 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 07:49:11,148 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 07:49:11,148 INFO L175 Difference]: Start difference. First operand has 93 places, 92 transitions, 543 flow. Second operand 8 states and 1206 transitions. [2023-08-27 07:49:11,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 120 transitions, 853 flow [2023-08-27 07:49:11,242 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 07:49:11,244 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 562 flow [2023-08-27 07:49:11,244 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 07:49:11,244 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 17 predicate places. [2023-08-27 07:49:11,244 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 562 flow [2023-08-27 07:49:11,245 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 07:49:11,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:49:11,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:49:11,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-27 07:49:11,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-27 07:49:11,446 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 07:49:11,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:49:11,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1113486431, now seen corresponding path program 1 times [2023-08-27 07:49:11,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:49:11,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183486634] [2023-08-27 07:49:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:49:11,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:49:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:49:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:49:11,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:49:11,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183486634] [2023-08-27 07:49:11,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183486634] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:49:11,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236554668] [2023-08-27 07:49:11,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:49:11,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:49:11,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:49:11,708 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:49:11,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 07:49:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:49:12,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 07:49:12,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:49:12,063 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 07:49:12,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:49:12,089 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 07:49:12,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:49:12,119 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 07:49:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:49:12,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:49:12,156 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 07:49:12,187 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:49:12,187 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-08-27 07:49:12,194 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:49:12,194 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 59 [2023-08-27 07:49:12,198 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 07:49:12,202 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 07:49:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:49:12,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236554668] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:49:12,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:49:12,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-27 07:49:12,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556162531] [2023-08-27 07:49:12,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:49:12,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 07:49:12,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:49:12,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 07:49:12,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=195, Unknown=2, NotChecked=28, Total=272 [2023-08-27 07:49:12,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 486 [2023-08-27 07:49:12,266 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 07:49:12,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:49:12,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 486 [2023-08-27 07:49:12,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:49:25,322 INFO L124 PetriNetUnfolderBase]: 55491/74212 cut-off events. [2023-08-27 07:49:25,322 INFO L125 PetriNetUnfolderBase]: For 80812/80812 co-relation queries the response was YES. [2023-08-27 07:49:25,458 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 07:49:25,663 INFO L140 encePairwiseOnDemand]: 469/486 looper letters, 120 selfloop transitions, 51 changer transitions 0/173 dead transitions. [2023-08-27 07:49:25,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 173 transitions, 1195 flow [2023-08-27 07:49:25,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 07:49:25,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 07:49:25,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1402 transitions. [2023-08-27 07:49:25,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32053040695016005 [2023-08-27 07:49:25,666 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1402 transitions. [2023-08-27 07:49:25,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1402 transitions. [2023-08-27 07:49:25,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:49:25,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1402 transitions. [2023-08-27 07:49:25,668 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 07:49:25,671 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 07:49:25,671 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 07:49:25,671 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 562 flow. Second operand 9 states and 1402 transitions. [2023-08-27 07:49:25,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 173 transitions, 1195 flow [2023-08-27 07:49:25,926 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 07:49:25,927 INFO L231 Difference]: Finished difference. Result has 102 places, 111 transitions, 844 flow [2023-08-27 07:49:25,928 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 07:49:25,928 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 23 predicate places. [2023-08-27 07:49:25,928 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 111 transitions, 844 flow [2023-08-27 07:49:25,929 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 07:49:25,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:49:25,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:49:25,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-27 07:49:26,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 07:49:26,129 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 07:49:26,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:49:26,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1113486429, now seen corresponding path program 1 times [2023-08-27 07:49:26,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:49:26,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995651818] [2023-08-27 07:49:26,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:49:26,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:49:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:49:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:49:26,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:49:26,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995651818] [2023-08-27 07:49:26,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995651818] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:49:26,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505164998] [2023-08-27 07:49:26,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:49:26,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:49:26,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:49:26,466 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:49:26,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 07:49:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:49:26,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-27 07:49:26,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:49:26,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:49:26,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:49:26,892 INFO L322 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-27 07:49:26,893 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 07:49:26,941 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 07:49:26,988 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 07:49:26,989 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 07:49:27,012 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 07:49:27,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:49:27,038 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 07:49:27,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:49:27,071 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 07:49:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:49:27,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:49:27,113 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 07:49:27,200 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:49:27,200 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 07:49:27,207 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:49:27,207 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 07:49:27,216 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 07:49:27,223 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 07:49:27,231 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 07:49:27,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:49:27,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505164998] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:49:27,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:49:27,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-27 07:49:27,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022363215] [2023-08-27 07:49:27,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:49:27,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 07:49:27,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:49:27,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 07:49:27,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=4, NotChecked=36, Total=420 [2023-08-27 07:49:27,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 486 [2023-08-27 07:49:27,349 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 07:49:27,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:49:27,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 486 [2023-08-27 07:49:27,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:49:40,151 INFO L124 PetriNetUnfolderBase]: 53891/71986 cut-off events. [2023-08-27 07:49:40,152 INFO L125 PetriNetUnfolderBase]: For 105640/105640 co-relation queries the response was YES. [2023-08-27 07:49:40,289 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 07:49:40,498 INFO L140 encePairwiseOnDemand]: 477/486 looper letters, 144 selfloop transitions, 26 changer transitions 0/172 dead transitions. [2023-08-27 07:49:40,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 172 transitions, 1303 flow [2023-08-27 07:49:40,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 07:49:40,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 07:49:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1235 transitions. [2023-08-27 07:49:40,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3176440329218107 [2023-08-27 07:49:40,501 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1235 transitions. [2023-08-27 07:49:40,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1235 transitions. [2023-08-27 07:49:40,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:49:40,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1235 transitions. [2023-08-27 07:49:40,503 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 07:49:40,505 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 07:49:40,506 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 07:49:40,506 INFO L175 Difference]: Start difference. First operand has 102 places, 111 transitions, 844 flow. Second operand 8 states and 1235 transitions. [2023-08-27 07:49:40,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 172 transitions, 1303 flow [2023-08-27 07:49:40,606 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 07:49:40,608 INFO L231 Difference]: Finished difference. Result has 106 places, 110 transitions, 852 flow [2023-08-27 07:49:40,608 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 07:49:40,608 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 27 predicate places. [2023-08-27 07:49:40,608 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 110 transitions, 852 flow [2023-08-27 07:49:40,609 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 07:49:40,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:49:40,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:49:40,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 07:49:40,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 07:49:40,810 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 07:49:40,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:49:40,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1113486432, now seen corresponding path program 1 times [2023-08-27 07:49:40,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:49:40,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306302702] [2023-08-27 07:49:40,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:49:40,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:49:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:49:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:49:41,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:49:41,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306302702] [2023-08-27 07:49:41,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306302702] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:49:41,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591666707] [2023-08-27 07:49:41,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:49:41,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:49:41,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:49:41,077 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:49:41,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 07:49:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:49:41,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 07:49:41,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:49:41,486 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 07:49:41,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:49:41,514 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 07:49:41,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:49:41,540 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 07:49:41,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:49:41,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:49:41,576 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 07:49:41,584 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 07:49:41,591 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:49:41,592 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 07:49:41,597 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:49:41,598 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 07:49:41,601 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 07:49:41,605 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 07:49:41,655 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 07:49:41,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591666707] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:49:41,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:49:41,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-27 07:49:41,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393687060] [2023-08-27 07:49:41,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:49:41,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 07:49:41,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:49:41,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 07:49:41,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=171, Unknown=2, NotChecked=54, Total=272 [2023-08-27 07:49:41,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 486 [2023-08-27 07:49:41,660 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 07:49:41,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:49:41,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 486 [2023-08-27 07:49:41,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:49:54,201 INFO L124 PetriNetUnfolderBase]: 52817/70286 cut-off events. [2023-08-27 07:49:54,201 INFO L125 PetriNetUnfolderBase]: For 118017/118017 co-relation queries the response was YES. [2023-08-27 07:49:54,343 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 07:49:54,546 INFO L140 encePairwiseOnDemand]: 469/486 looper letters, 118 selfloop transitions, 52 changer transitions 0/172 dead transitions. [2023-08-27 07:49:54,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 172 transitions, 1328 flow [2023-08-27 07:49:54,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 07:49:54,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 07:49:54,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1400 transitions. [2023-08-27 07:49:54,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3200731595793324 [2023-08-27 07:49:54,549 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1400 transitions. [2023-08-27 07:49:54,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1400 transitions. [2023-08-27 07:49:54,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:49:54,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1400 transitions. [2023-08-27 07:49:54,552 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 07:49:54,554 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 07:49:54,555 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 07:49:54,555 INFO L175 Difference]: Start difference. First operand has 106 places, 110 transitions, 852 flow. Second operand 9 states and 1400 transitions. [2023-08-27 07:49:54,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 172 transitions, 1328 flow [2023-08-27 07:49:54,675 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 07:49:54,677 INFO L231 Difference]: Finished difference. Result has 109 places, 111 transitions, 927 flow [2023-08-27 07:49:54,677 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 07:49:54,677 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 30 predicate places. [2023-08-27 07:49:54,678 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 111 transitions, 927 flow [2023-08-27 07:49:54,678 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 07:49:54,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:49:54,678 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-27 07:49:54,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 07:49:54,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 07:49:54,884 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 07:49:54,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:49:54,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1341579233, now seen corresponding path program 2 times [2023-08-27 07:49:54,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:49:54,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087822228] [2023-08-27 07:49:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:49:54,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:49:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:49:54,981 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 07:49:54,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:49:54,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087822228] [2023-08-27 07:49:54,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087822228] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:49:54,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862259161] [2023-08-27 07:49:54,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:49:54,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:49:54,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:49:54,985 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:49:54,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 07:49:55,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 07:49:55,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:49:55,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 07:49:55,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:49:55,389 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 07:49:55,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:49:55,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862259161] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:49:55,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:49:55,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-27 07:49:55,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348739918] [2023-08-27 07:49:55,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:49:55,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:49:55,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:49:55,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:49:55,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-27 07:49:55,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 486 [2023-08-27 07:49:55,393 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 07:49:55,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:49:55,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 486 [2023-08-27 07:49:55,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:50:06,855 INFO L124 PetriNetUnfolderBase]: 48625/64839 cut-off events. [2023-08-27 07:50:06,855 INFO L125 PetriNetUnfolderBase]: For 126608/126608 co-relation queries the response was YES. [2023-08-27 07:50:06,977 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 07:50:07,175 INFO L140 encePairwiseOnDemand]: 483/486 looper letters, 101 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2023-08-27 07:50:07,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 107 transitions, 1079 flow [2023-08-27 07:50:07,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:50:07,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:50:07,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2023-08-27 07:50:07,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3737997256515775 [2023-08-27 07:50:07,177 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 545 transitions. [2023-08-27 07:50:07,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 545 transitions. [2023-08-27 07:50:07,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:50:07,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 545 transitions. [2023-08-27 07:50:07,178 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 07:50:07,180 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 07:50:07,180 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 07:50:07,180 INFO L175 Difference]: Start difference. First operand has 109 places, 111 transitions, 927 flow. Second operand 3 states and 545 transitions. [2023-08-27 07:50:07,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 107 transitions, 1079 flow [2023-08-27 07:50:07,330 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 07:50:07,331 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 814 flow [2023-08-27 07:50:07,331 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 07:50:07,332 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 22 predicate places. [2023-08-27 07:50:07,332 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 814 flow [2023-08-27 07:50:07,332 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 07:50:07,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:50:07,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:50:07,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-27 07:50:07,538 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 07:50:07,538 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 07:50:07,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:50:07,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1113742178, now seen corresponding path program 1 times [2023-08-27 07:50:07,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:50:07,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008583320] [2023-08-27 07:50:07,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:07,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:50:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:07,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:50:07,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:50:07,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008583320] [2023-08-27 07:50:07,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008583320] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:50:07,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600345757] [2023-08-27 07:50:07,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:07,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:50:07,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:50:07,925 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:50:07,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 07:50:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:08,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 07:50:08,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:50:08,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:50:08,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:50:08,328 INFO L322 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-27 07:50:08,329 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 07:50:08,352 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 07:50:08,384 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 07:50:08,384 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 07:50:08,415 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 07:50:08,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:50:08,439 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 07:50:08,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:50:08,486 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 07:50:08,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:50:08,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:50:08,801 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:50:08,801 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 07:50:08,808 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:50:08,808 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 07:50:08,813 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 07:50:08,817 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 07:50:08,827 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 07:50:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:50:08,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600345757] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:50:08,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:50:08,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 07:50:08,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307301020] [2023-08-27 07:50:08,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:50:08,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 07:50:08,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:50:08,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 07:50:08,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=363, Unknown=14, NotChecked=0, Total=462 [2023-08-27 07:50:08,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 486 [2023-08-27 07:50:08,937 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 07:50:08,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:50:08,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 486 [2023-08-27 07:50:08,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:50:20,096 INFO L124 PetriNetUnfolderBase]: 47803/63391 cut-off events. [2023-08-27 07:50:20,096 INFO L125 PetriNetUnfolderBase]: For 131250/131250 co-relation queries the response was YES. [2023-08-27 07:50:20,207 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 07:50:20,581 INFO L140 encePairwiseOnDemand]: 477/486 looper letters, 138 selfloop transitions, 27 changer transitions 0/167 dead transitions. [2023-08-27 07:50:20,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 167 transitions, 1258 flow [2023-08-27 07:50:20,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 07:50:20,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 07:50:20,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1230 transitions. [2023-08-27 07:50:20,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31635802469135804 [2023-08-27 07:50:20,583 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1230 transitions. [2023-08-27 07:50:20,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1230 transitions. [2023-08-27 07:50:20,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:50:20,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1230 transitions. [2023-08-27 07:50:20,585 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 07:50:20,588 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 07:50:20,588 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 07:50:20,588 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 814 flow. Second operand 8 states and 1230 transitions. [2023-08-27 07:50:20,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 167 transitions, 1258 flow [2023-08-27 07:50:20,786 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 07:50:20,788 INFO L231 Difference]: Finished difference. Result has 107 places, 106 transitions, 846 flow [2023-08-27 07:50:20,789 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 07:50:20,789 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 28 predicate places. [2023-08-27 07:50:20,789 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 106 transitions, 846 flow [2023-08-27 07:50:20,790 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 07:50:20,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:50:20,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:50:20,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-27 07:50:20,997 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 07:50:20,997 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 07:50:20,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:50:20,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1113741617, now seen corresponding path program 1 times [2023-08-27 07:50:20,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:50:20,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129330751] [2023-08-27 07:50:20,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:20,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:50:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:21,057 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 07:50:21,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:50:21,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129330751] [2023-08-27 07:50:21,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129330751] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:50:21,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523796419] [2023-08-27 07:50:21,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:21,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:50:21,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:50:21,059 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:50:21,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 07:50:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:21,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:50:21,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:50:21,420 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 07:50:21,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:50:21,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523796419] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:50:21,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:50:21,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 07:50:21,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036839856] [2023-08-27 07:50:21,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:50:21,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:50:21,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:50:21,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:50:21,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:50:21,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 486 [2023-08-27 07:50:21,422 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 07:50:21,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:50:21,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 486 [2023-08-27 07:50:21,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:50:31,462 INFO L124 PetriNetUnfolderBase]: 44223/58557 cut-off events. [2023-08-27 07:50:31,463 INFO L125 PetriNetUnfolderBase]: For 143613/143613 co-relation queries the response was YES. [2023-08-27 07:50:31,553 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 07:50:31,735 INFO L140 encePairwiseOnDemand]: 482/486 looper letters, 147 selfloop transitions, 10 changer transitions 0/159 dead transitions. [2023-08-27 07:50:31,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 159 transitions, 1289 flow [2023-08-27 07:50:31,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 07:50:31,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 07:50:31,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 837 transitions. [2023-08-27 07:50:31,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2023-08-27 07:50:31,738 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 837 transitions. [2023-08-27 07:50:31,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 837 transitions. [2023-08-27 07:50:31,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:50:31,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 837 transitions. [2023-08-27 07:50:31,739 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 07:50:31,740 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 07:50:31,741 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 07:50:31,741 INFO L175 Difference]: Start difference. First operand has 107 places, 106 transitions, 846 flow. Second operand 4 states and 837 transitions. [2023-08-27 07:50:31,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 159 transitions, 1289 flow [2023-08-27 07:50:31,826 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 07:50:31,827 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 791 flow [2023-08-27 07:50:31,827 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 07:50:31,827 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 25 predicate places. [2023-08-27 07:50:31,828 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 791 flow [2023-08-27 07:50:31,828 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 07:50:31,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:50:31,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:50:31,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-27 07:50:32,028 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 07:50:32,029 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 07:50:32,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:50:32,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1113741775, now seen corresponding path program 1 times [2023-08-27 07:50:32,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:50:32,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493876068] [2023-08-27 07:50:32,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:32,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:50:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:32,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:50:32,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:50:32,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493876068] [2023-08-27 07:50:32,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493876068] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:50:32,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113352872] [2023-08-27 07:50:32,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:32,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:50:32,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:50:32,129 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:50:32,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 07:50:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:32,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 07:50:32,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:50:32,593 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 07:50:32,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:50:32,634 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 07:50:32,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113352872] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:50:32,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:50:32,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 07:50:32,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357870180] [2023-08-27 07:50:32,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:50:32,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 07:50:32,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:50:32,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 07:50:32,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-08-27 07:50:32,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 486 [2023-08-27 07:50:32,638 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 07:50:32,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:50:32,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 486 [2023-08-27 07:50:32,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:50:40,186 INFO L124 PetriNetUnfolderBase]: 33002/43574 cut-off events. [2023-08-27 07:50:40,187 INFO L125 PetriNetUnfolderBase]: For 111184/111184 co-relation queries the response was YES. [2023-08-27 07:50:40,261 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 07:50:40,396 INFO L140 encePairwiseOnDemand]: 472/486 looper letters, 181 selfloop transitions, 22 changer transitions 0/205 dead transitions. [2023-08-27 07:50:40,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 205 transitions, 1605 flow [2023-08-27 07:50:40,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 07:50:40,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 07:50:40,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1518 transitions. [2023-08-27 07:50:40,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34705075445816186 [2023-08-27 07:50:40,398 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1518 transitions. [2023-08-27 07:50:40,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1518 transitions. [2023-08-27 07:50:40,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:50:40,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1518 transitions. [2023-08-27 07:50:40,401 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 07:50:40,404 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 07:50:40,404 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 07:50:40,404 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 791 flow. Second operand 9 states and 1518 transitions. [2023-08-27 07:50:40,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 205 transitions, 1605 flow [2023-08-27 07:50:40,454 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 07:50:40,456 INFO L231 Difference]: Finished difference. Result has 113 places, 113 transitions, 1023 flow [2023-08-27 07:50:40,457 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 07:50:40,457 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 34 predicate places. [2023-08-27 07:50:40,457 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 113 transitions, 1023 flow [2023-08-27 07:50:40,457 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 07:50:40,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:50:40,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:50:40,465 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 07:50:40,658 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 07:50:40,659 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 07:50:40,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:50:40,659 INFO L85 PathProgramCache]: Analyzing trace with hash -158260820, now seen corresponding path program 1 times [2023-08-27 07:50:40,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:50:40,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482133742] [2023-08-27 07:50:40,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:40,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:50:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:40,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:50:40,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:50:40,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482133742] [2023-08-27 07:50:40,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482133742] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:50:40,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025585372] [2023-08-27 07:50:40,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:40,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:50:40,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:50:40,773 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:50:40,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 07:50:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:41,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 07:50:41,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:50:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:50:41,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:50:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:50:41,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025585372] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:50:41,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:50:41,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 07:50:41,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371612407] [2023-08-27 07:50:41,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:50:41,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 07:50:41,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:50:41,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 07:50:41,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-27 07:50:41,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 486 [2023-08-27 07:50:41,414 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 07:50:41,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:50:41,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 486 [2023-08-27 07:50:41,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:50:45,142 INFO L124 PetriNetUnfolderBase]: 16695/24765 cut-off events. [2023-08-27 07:50:45,142 INFO L125 PetriNetUnfolderBase]: For 85447/85447 co-relation queries the response was YES. [2023-08-27 07:50:45,177 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 07:50:45,437 INFO L140 encePairwiseOnDemand]: 472/486 looper letters, 152 selfloop transitions, 14 changer transitions 0/172 dead transitions. [2023-08-27 07:50:45,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 172 transitions, 1665 flow [2023-08-27 07:50:45,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 07:50:45,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 07:50:45,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1287 transitions. [2023-08-27 07:50:45,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33101851851851855 [2023-08-27 07:50:45,439 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1287 transitions. [2023-08-27 07:50:45,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1287 transitions. [2023-08-27 07:50:45,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:50:45,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1287 transitions. [2023-08-27 07:50:45,441 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 07:50:45,443 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 07:50:45,443 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 07:50:45,443 INFO L175 Difference]: Start difference. First operand has 113 places, 113 transitions, 1023 flow. Second operand 8 states and 1287 transitions. [2023-08-27 07:50:45,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 172 transitions, 1665 flow [2023-08-27 07:50:45,488 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 07:50:45,490 INFO L231 Difference]: Finished difference. Result has 117 places, 115 transitions, 1055 flow [2023-08-27 07:50:45,490 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 07:50:45,490 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2023-08-27 07:50:45,490 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 1055 flow [2023-08-27 07:50:45,491 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 07:50:45,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:50:45,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:50:45,496 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 07:50:45,691 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 07:50:45,692 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 07:50:45,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:50:45,692 INFO L85 PathProgramCache]: Analyzing trace with hash -859366514, now seen corresponding path program 1 times [2023-08-27 07:50:45,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:50:45,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281668638] [2023-08-27 07:50:45,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:45,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:50:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:50:45,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:50:45,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281668638] [2023-08-27 07:50:45,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281668638] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:50:45,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377073321] [2023-08-27 07:50:45,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:45,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:50:45,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:50:45,999 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:50:45,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 07:50:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:46,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 07:50:46,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:50:46,380 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 07:50:46,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:50:46,413 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 07:50:46,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:50:46,462 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 07:50:46,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:50:46,487 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 07:50:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:50:46,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:50:46,632 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:50:46,632 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 07:50:46,642 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:50:46,643 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 07:50:46,654 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2023-08-27 07:50:46,661 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 07:50:46,664 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 07:50:46,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:50:46,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377073321] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:50:46,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:50:46,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 07:50:46,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780750586] [2023-08-27 07:50:46,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:50:46,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 07:50:46,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:50:46,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 07:50:46,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=373, Unknown=10, NotChecked=0, Total=462 [2023-08-27 07:50:46,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 486 [2023-08-27 07:50:46,732 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 07:50:46,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:50:46,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 486 [2023-08-27 07:50:46,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:50:52,290 INFO L124 PetriNetUnfolderBase]: 22469/29915 cut-off events. [2023-08-27 07:50:52,290 INFO L125 PetriNetUnfolderBase]: For 83516/83756 co-relation queries the response was YES. [2023-08-27 07:50:52,346 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 07:50:52,434 INFO L140 encePairwiseOnDemand]: 472/486 looper letters, 120 selfloop transitions, 46 changer transitions 0/169 dead transitions. [2023-08-27 07:50:52,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 169 transitions, 1572 flow [2023-08-27 07:50:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 07:50:52,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 07:50:52,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1083 transitions. [2023-08-27 07:50:52,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.318342151675485 [2023-08-27 07:50:52,436 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1083 transitions. [2023-08-27 07:50:52,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1083 transitions. [2023-08-27 07:50:52,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:50:52,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1083 transitions. [2023-08-27 07:50:52,437 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 07:50:52,439 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 07:50:52,439 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 07:50:52,439 INFO L175 Difference]: Start difference. First operand has 117 places, 115 transitions, 1055 flow. Second operand 7 states and 1083 transitions. [2023-08-27 07:50:52,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 169 transitions, 1572 flow [2023-08-27 07:50:52,543 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 07:50:52,545 INFO L231 Difference]: Finished difference. Result has 120 places, 118 transitions, 1232 flow [2023-08-27 07:50:52,545 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 07:50:52,545 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 41 predicate places. [2023-08-27 07:50:52,545 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 118 transitions, 1232 flow [2023-08-27 07:50:52,546 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 07:50:52,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:50:52,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:50:52,551 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 07:50:52,746 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 07:50:52,747 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 89 more)] === [2023-08-27 07:50:52,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:50:52,747 INFO L85 PathProgramCache]: Analyzing trace with hash -859366512, now seen corresponding path program 1 times [2023-08-27 07:50:52,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:50:52,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408029816] [2023-08-27 07:50:52,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:52,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:50:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:50:53,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:50:53,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408029816] [2023-08-27 07:50:53,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408029816] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:50:53,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528655646] [2023-08-27 07:50:53,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:50:53,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:50:53,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:50:53,107 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:50:53,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 07:50:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:50:53,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-27 07:50:53,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:50:53,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:50:53,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:50:53,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:50:53,470 INFO L322 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-27 07:50:53,471 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 07:50:53,517 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 07:50:53,546 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 07:50:53,546 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 07:50:53,579 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 07:50:53,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:50:53,603 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 07:50:53,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:50:53,652 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 07:50:53,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:50:53,684 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 07:50:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:50:53,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:50:53,708 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 07:50:53,775 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 [2023-08-27 07:50:55,910 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:50:55,911 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 33 treesize of output 34 [2023-08-27 07:50:55,923 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:50:55,923 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 4387 treesize of output 4323 [2023-08-27 07:50:55,937 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 260 treesize of output 244 [2023-08-27 07:50:55,945 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 121 treesize of output 119 [2023-08-27 07:50:55,954 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 119 treesize of output 115 [2023-08-27 07:50:55,961 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 122 treesize of output 114