/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 PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 13:44:23,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 13:44:23,218 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 13:44:23,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 13:44:23,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 13:44:23,253 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 13:44:23,254 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 13:44:23,254 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 13:44:23,255 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 13:44:23,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 13:44:23,258 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 13:44:23,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 13:44:23,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 13:44:23,260 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 13:44:23,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 13:44:23,260 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 13:44:23,261 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 13:44:23,261 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 13:44:23,261 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 13:44:23,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 13:44:23,262 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 13:44:23,262 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 13:44:23,263 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 13:44:23,263 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 13:44:23,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 13:44:23,264 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 13:44:23,264 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 13:44:23,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 13:44:23,264 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 13:44:23,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 13:44:23,265 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 13:44:23,266 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 13:44:23,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 13:44:23,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 13:44:23,266 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 13:44:23,266 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 13:44:23,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 13:44:23,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 13:44:23,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 13:44:23,607 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 13:44:23,607 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 13:44:23,608 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c [2023-08-27 13:44:24,670 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 13:44:24,848 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 13:44:24,849 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c [2023-08-27 13:44:24,855 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bc60dc12/5fa1f449fbb5422a99cd997251bf97f6/FLAG418961874 [2023-08-27 13:44:24,870 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bc60dc12/5fa1f449fbb5422a99cd997251bf97f6 [2023-08-27 13:44:24,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 13:44:24,876 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 13:44:24,878 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 13:44:24,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 13:44:24,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 13:44:24,882 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:44:24" (1/1) ... [2023-08-27 13:44:24,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b83322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:24, skipping insertion in model container [2023-08-27 13:44:24,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:44:24" (1/1) ... [2023-08-27 13:44:24,915 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 13:44:25,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 13:44:25,135 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 13:44:25,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 13:44:25,190 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 13:44:25,190 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 13:44:25,196 INFO L206 MainTranslator]: Completed translation [2023-08-27 13:44:25,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:25 WrapperNode [2023-08-27 13:44:25,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 13:44:25,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 13:44:25,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 13:44:25,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 13:44:25,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:25" (1/1) ... [2023-08-27 13:44:25,223 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:25" (1/1) ... [2023-08-27 13:44:25,264 INFO L138 Inliner]: procedures = 25, calls = 69, calls flagged for inlining = 21, calls inlined = 25, statements flattened = 377 [2023-08-27 13:44:25,264 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 13:44:25,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 13:44:25,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 13:44:25,265 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 13:44:25,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:25" (1/1) ... [2023-08-27 13:44:25,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:25" (1/1) ... [2023-08-27 13:44:25,290 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:25" (1/1) ... [2023-08-27 13:44:25,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:25" (1/1) ... [2023-08-27 13:44:25,306 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:25" (1/1) ... [2023-08-27 13:44:25,310 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:25" (1/1) ... [2023-08-27 13:44:25,312 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:25" (1/1) ... [2023-08-27 13:44:25,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:25" (1/1) ... [2023-08-27 13:44:25,328 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 13:44:25,329 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 13:44:25,329 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 13:44:25,329 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 13:44:25,330 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:25" (1/1) ... [2023-08-27 13:44:25,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 13:44:25,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:44:25,362 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 13:44:25,392 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 13:44:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 13:44:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 13:44:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 13:44:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 13:44:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 13:44:25,408 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 13:44:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 13:44:25,409 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 13:44:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 13:44:25,409 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 13:44:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 13:44:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 13:44:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 13:44:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 13:44:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 13:44:25,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 13:44:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 13:44:25,411 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 13:44:25,538 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 13:44:25,540 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 13:44:25,988 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 13:44:26,247 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 13:44:26,248 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-27 13:44:26,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:44:26 BoogieIcfgContainer [2023-08-27 13:44:26,251 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 13:44:26,253 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 13:44:26,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 13:44:26,256 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 13:44:26,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:44:24" (1/3) ... [2023-08-27 13:44:26,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdb4c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:44:26, skipping insertion in model container [2023-08-27 13:44:26,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:25" (2/3) ... [2023-08-27 13:44:26,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdb4c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:44:26, skipping insertion in model container [2023-08-27 13:44:26,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:44:26" (3/3) ... [2023-08-27 13:44:26,259 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2023-08-27 13:44:26,274 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 13:44:26,274 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2023-08-27 13:44:26,275 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 13:44:26,364 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 13:44:26,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 299 transitions, 622 flow [2023-08-27 13:44:26,534 INFO L124 PetriNetUnfolderBase]: 27/296 cut-off events. [2023-08-27 13:44:26,535 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 13:44:26,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 296 events. 27/296 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 280 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 251. Up to 6 conditions per place. [2023-08-27 13:44:26,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 299 transitions, 622 flow [2023-08-27 13:44:26,550 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 268 places, 285 transitions, 588 flow [2023-08-27 13:44:26,554 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 13:44:26,566 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 268 places, 285 transitions, 588 flow [2023-08-27 13:44:26,572 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 268 places, 285 transitions, 588 flow [2023-08-27 13:44:26,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 285 transitions, 588 flow [2023-08-27 13:44:26,634 INFO L124 PetriNetUnfolderBase]: 27/285 cut-off events. [2023-08-27 13:44:26,634 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 13:44:26,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 285 events. 27/285 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 280 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 251. Up to 6 conditions per place. [2023-08-27 13:44:26,639 INFO L119 LiptonReduction]: Number of co-enabled transitions 4260 [2023-08-27 13:44:38,018 INFO L134 LiptonReduction]: Checked pairs total: 4871 [2023-08-27 13:44:38,018 INFO L136 LiptonReduction]: Total number of compositions: 334 [2023-08-27 13:44:38,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 13:44:38,034 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;@68548e1a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 13:44:38,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-08-27 13:44:38,037 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 13:44:38,037 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 13:44:38,037 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 13:44:38,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:38,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 13:44:38,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:38,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:38,041 INFO L85 PathProgramCache]: Analyzing trace with hash 47505, now seen corresponding path program 1 times [2023-08-27 13:44:38,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:38,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383061438] [2023-08-27 13:44:38,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:38,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:38,322 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 13:44:38,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:38,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383061438] [2023-08-27 13:44:38,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383061438] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:38,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:44:38,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:44:38,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022857238] [2023-08-27 13:44:38,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:38,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:44:38,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:38,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:44:38,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:44:38,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 633 [2023-08-27 13:44:38,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:38,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:38,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 633 [2023-08-27 13:44:38,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:38,659 INFO L124 PetriNetUnfolderBase]: 667/974 cut-off events. [2023-08-27 13:44:38,660 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-08-27 13:44:38,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 974 events. 667/974 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 3443 event pairs, 493 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 1740. Up to 970 conditions per place. [2023-08-27 13:44:38,668 INFO L140 encePairwiseOnDemand]: 612/633 looper letters, 38 selfloop transitions, 7 changer transitions 0/45 dead transitions. [2023-08-27 13:44:38,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 198 flow [2023-08-27 13:44:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:44:38,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:44:38,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 752 transitions. [2023-08-27 13:44:38,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3959978936282254 [2023-08-27 13:44:38,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 752 transitions. [2023-08-27 13:44:38,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 752 transitions. [2023-08-27 13:44:38,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:38,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 752 transitions. [2023-08-27 13:44:38,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:38,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:38,698 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:38,700 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 112 flow. Second operand 3 states and 752 transitions. [2023-08-27 13:44:38,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 198 flow [2023-08-27 13:44:38,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 186 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 13:44:38,704 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 148 flow [2023-08-27 13:44:38,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2023-08-27 13:44:38,709 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -10 predicate places. [2023-08-27 13:44:38,709 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 148 flow [2023-08-27 13:44:38,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:38,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:38,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 13:44:38,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 13:44:38,710 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:38,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:38,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1475633, now seen corresponding path program 1 times [2023-08-27 13:44:38,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:38,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897644733] [2023-08-27 13:44:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:38,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:38,813 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 13:44:38,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:38,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897644733] [2023-08-27 13:44:38,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897644733] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:44:38,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476045956] [2023-08-27 13:44:38,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:38,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:38,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:44:38,817 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 13:44:38,860 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 13:44:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:38,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 13:44:38,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:44:38,972 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 13:44:38,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:44:38,986 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 13:44:38,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476045956] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:44:38,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:44:38,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 13:44:38,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639680210] [2023-08-27 13:44:38,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:44:38,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:44:38,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:38,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:44:38,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:44:38,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 633 [2023-08-27 13:44:38,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 232.14285714285714) internal successors, (1625), 7 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:38,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:38,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 633 [2023-08-27 13:44:38,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:39,335 INFO L124 PetriNetUnfolderBase]: 685/1001 cut-off events. [2023-08-27 13:44:39,336 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 13:44:39,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2096 conditions, 1001 events. 685/1001 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 3517 event pairs, 493 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 1941. Up to 970 conditions per place. [2023-08-27 13:44:39,342 INFO L140 encePairwiseOnDemand]: 620/633 looper letters, 35 selfloop transitions, 37 changer transitions 0/72 dead transitions. [2023-08-27 13:44:39,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 412 flow [2023-08-27 13:44:39,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:44:39,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:44:39,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1698 transitions. [2023-08-27 13:44:39,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3832092078537576 [2023-08-27 13:44:39,348 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1698 transitions. [2023-08-27 13:44:39,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1698 transitions. [2023-08-27 13:44:39,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:39,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1698 transitions. [2023-08-27 13:44:39,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 242.57142857142858) internal successors, (1698), 7 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:39,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 633.0) internal successors, (5064), 8 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:39,362 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 633.0) internal successors, (5064), 8 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:39,362 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 148 flow. Second operand 7 states and 1698 transitions. [2023-08-27 13:44:39,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 412 flow [2023-08-27 13:44:39,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 72 transitions, 386 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 13:44:39,365 INFO L231 Difference]: Finished difference. Result has 48 places, 72 transitions, 378 flow [2023-08-27 13:44:39,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=378, PETRI_PLACES=48, PETRI_TRANSITIONS=72} [2023-08-27 13:44:39,366 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-27 13:44:39,366 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 72 transitions, 378 flow [2023-08-27 13:44:39,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 232.14285714285714) internal successors, (1625), 7 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:39,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:39,367 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-27 13:44:39,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 13:44:39,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:39,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:39,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:39,574 INFO L85 PathProgramCache]: Analyzing trace with hash 45745969, now seen corresponding path program 1 times [2023-08-27 13:44:39,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:39,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905575572] [2023-08-27 13:44:39,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:39,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:39,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:44:39,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:39,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905575572] [2023-08-27 13:44:39,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905575572] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:44:39,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306396081] [2023-08-27 13:44:39,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:39,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:39,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:44:39,677 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 13:44:39,702 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 13:44:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:39,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 13:44:39,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:44:39,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:44:39,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 13:44:39,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306396081] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:39,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 13:44:39,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 13:44:39,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915154996] [2023-08-27 13:44:39,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:39,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 13:44:39,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:39,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 13:44:39,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 13:44:39,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 633 [2023-08-27 13:44:39,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 72 transitions, 378 flow. Second operand has 5 states, 5 states have (on average 231.8) internal successors, (1159), 5 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:39,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:39,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 633 [2023-08-27 13:44:39,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:40,012 INFO L124 PetriNetUnfolderBase]: 676/989 cut-off events. [2023-08-27 13:44:40,012 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-27 13:44:40,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 989 events. 676/989 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 3434 event pairs, 493 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 2012. Up to 961 conditions per place. [2023-08-27 13:44:40,018 INFO L140 encePairwiseOnDemand]: 623/633 looper letters, 40 selfloop transitions, 20 changer transitions 0/60 dead transitions. [2023-08-27 13:44:40,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 417 flow [2023-08-27 13:44:40,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 13:44:40,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 13:44:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1209 transitions. [2023-08-27 13:44:40,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819905213270142 [2023-08-27 13:44:40,023 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1209 transitions. [2023-08-27 13:44:40,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1209 transitions. [2023-08-27 13:44:40,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:40,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1209 transitions. [2023-08-27 13:44:40,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 241.8) internal successors, (1209), 5 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:40,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 633.0) internal successors, (3798), 6 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:40,033 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 633.0) internal successors, (3798), 6 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:40,034 INFO L175 Difference]: Start difference. First operand has 48 places, 72 transitions, 378 flow. Second operand 5 states and 1209 transitions. [2023-08-27 13:44:40,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 417 flow [2023-08-27 13:44:40,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 380 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-27 13:44:40,037 INFO L231 Difference]: Finished difference. Result has 47 places, 60 transitions, 300 flow [2023-08-27 13:44:40,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=47, PETRI_TRANSITIONS=60} [2023-08-27 13:44:40,038 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2023-08-27 13:44:40,038 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 60 transitions, 300 flow [2023-08-27 13:44:40,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 231.8) internal successors, (1159), 5 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:40,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:40,039 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 13:44:40,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 13:44:40,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-27 13:44:40,245 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:40,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:40,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1012296964, now seen corresponding path program 2 times [2023-08-27 13:44:40,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:40,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431040681] [2023-08-27 13:44:40,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:40,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:40,360 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 13:44:40,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:40,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431040681] [2023-08-27 13:44:40,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431040681] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:44:40,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232344184] [2023-08-27 13:44:40,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 13:44:40,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:40,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:44:40,362 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 13:44:40,365 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 13:44:40,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 13:44:40,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:44:40,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 13:44:40,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:44:40,456 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 13:44:40,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 13:44:40,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232344184] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:40,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 13:44:40,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 13:44:40,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864811660] [2023-08-27 13:44:40,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:40,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:44:40,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:40,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:44:40,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 13:44:40,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 633 [2023-08-27 13:44:40,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 60 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:40,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:40,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 633 [2023-08-27 13:44:40,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:40,678 INFO L124 PetriNetUnfolderBase]: 676/986 cut-off events. [2023-08-27 13:44:40,678 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-27 13:44:40,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2088 conditions, 986 events. 676/986 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 3482 event pairs, 493 based on Foata normal form. 3/401 useless extension candidates. Maximal degree in co-relation 2016. Up to 986 conditions per place. [2023-08-27 13:44:40,683 INFO L140 encePairwiseOnDemand]: 629/633 looper letters, 56 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-08-27 13:44:40,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 384 flow [2023-08-27 13:44:40,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:44:40,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:44:40,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 738 transitions. [2023-08-27 13:44:40,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3886255924170616 [2023-08-27 13:44:40,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 738 transitions. [2023-08-27 13:44:40,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 738 transitions. [2023-08-27 13:44:40,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:40,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 738 transitions. [2023-08-27 13:44:40,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:40,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:40,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:40,693 INFO L175 Difference]: Start difference. First operand has 47 places, 60 transitions, 300 flow. Second operand 3 states and 738 transitions. [2023-08-27 13:44:40,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 384 flow [2023-08-27 13:44:40,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 308 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-27 13:44:40,696 INFO L231 Difference]: Finished difference. Result has 39 places, 57 transitions, 196 flow [2023-08-27 13:44:40,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=39, PETRI_TRANSITIONS=57} [2023-08-27 13:44:40,697 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -12 predicate places. [2023-08-27 13:44:40,697 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 57 transitions, 196 flow [2023-08-27 13:44:40,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:40,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:40,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 13:44:40,707 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 13:44:40,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:40,903 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:40,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:40,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1041766992, now seen corresponding path program 1 times [2023-08-27 13:44:40,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:40,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746819879] [2023-08-27 13:44:40,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:40,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:40,982 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 13:44:40,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:40,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746819879] [2023-08-27 13:44:40,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746819879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:40,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:44:40,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:44:40,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686889454] [2023-08-27 13:44:40,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:40,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:44:40,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:40,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:44:40,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:44:40,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 633 [2023-08-27 13:44:40,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 57 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:40,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:40,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 633 [2023-08-27 13:44:40,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:41,280 INFO L124 PetriNetUnfolderBase]: 986/1422 cut-off events. [2023-08-27 13:44:41,281 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 13:44:41,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2924 conditions, 1422 events. 986/1422 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5837 event pairs, 253 based on Foata normal form. 0/582 useless extension candidates. Maximal degree in co-relation 2916. Up to 857 conditions per place. [2023-08-27 13:44:41,288 INFO L140 encePairwiseOnDemand]: 627/633 looper letters, 76 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-08-27 13:44:41,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 79 transitions, 403 flow [2023-08-27 13:44:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:44:41,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:44:41,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 796 transitions. [2023-08-27 13:44:41,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4191679831490258 [2023-08-27 13:44:41,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 796 transitions. [2023-08-27 13:44:41,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 796 transitions. [2023-08-27 13:44:41,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:41,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 796 transitions. [2023-08-27 13:44:41,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.3333333333333) internal successors, (796), 3 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:41,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:41,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:41,297 INFO L175 Difference]: Start difference. First operand has 39 places, 57 transitions, 196 flow. Second operand 3 states and 796 transitions. [2023-08-27 13:44:41,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 79 transitions, 403 flow [2023-08-27 13:44:41,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 79 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:44:41,299 INFO L231 Difference]: Finished difference. Result has 42 places, 59 transitions, 221 flow [2023-08-27 13:44:41,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=42, PETRI_TRANSITIONS=59} [2023-08-27 13:44:41,300 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -9 predicate places. [2023-08-27 13:44:41,300 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 59 transitions, 221 flow [2023-08-27 13:44:41,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:41,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:41,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:44:41,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 13:44:41,301 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:41,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:41,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2064959731, now seen corresponding path program 1 times [2023-08-27 13:44:41,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:41,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586202672] [2023-08-27 13:44:41,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:41,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:41,437 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 13:44:41,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:41,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586202672] [2023-08-27 13:44:41,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586202672] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:44:41,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240246764] [2023-08-27 13:44:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:41,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:41,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:44:41,439 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 13:44:41,467 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 13:44:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:41,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 13:44:41,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:44:41,587 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 13:44:41,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 13:44:41,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240246764] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:41,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 13:44:41,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-27 13:44:41,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072025863] [2023-08-27 13:44:41,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:41,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:44:41,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:41,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:44:41,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 13:44:41,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 633 [2023-08-27 13:44:41,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 59 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:41,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:41,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 633 [2023-08-27 13:44:41,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:41,896 INFO L124 PetriNetUnfolderBase]: 1194/1740 cut-off events. [2023-08-27 13:44:41,896 INFO L125 PetriNetUnfolderBase]: For 353/353 co-relation queries the response was YES. [2023-08-27 13:44:41,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3925 conditions, 1740 events. 1194/1740 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 7463 event pairs, 377 based on Foata normal form. 84/996 useless extension candidates. Maximal degree in co-relation 3914. Up to 1411 conditions per place. [2023-08-27 13:44:41,906 INFO L140 encePairwiseOnDemand]: 628/633 looper letters, 74 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2023-08-27 13:44:41,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 77 transitions, 415 flow [2023-08-27 13:44:41,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:44:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:44:41,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 779 transitions. [2023-08-27 13:44:41,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41021590310689837 [2023-08-27 13:44:41,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 779 transitions. [2023-08-27 13:44:41,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 779 transitions. [2023-08-27 13:44:41,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:41,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 779 transitions. [2023-08-27 13:44:41,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:41,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:41,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:41,917 INFO L175 Difference]: Start difference. First operand has 42 places, 59 transitions, 221 flow. Second operand 3 states and 779 transitions. [2023-08-27 13:44:41,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 77 transitions, 415 flow [2023-08-27 13:44:41,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 77 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 13:44:41,923 INFO L231 Difference]: Finished difference. Result has 43 places, 61 transitions, 236 flow [2023-08-27 13:44:41,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=43, PETRI_TRANSITIONS=61} [2023-08-27 13:44:41,925 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -8 predicate places. [2023-08-27 13:44:41,927 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 61 transitions, 236 flow [2023-08-27 13:44:41,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:41,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:41,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:44:41,938 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 13:44:42,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:42,138 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:42,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:42,138 INFO L85 PathProgramCache]: Analyzing trace with hash 410656617, now seen corresponding path program 1 times [2023-08-27 13:44:42,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:42,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845993536] [2023-08-27 13:44:42,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:42,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:42,241 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 13:44:42,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:42,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845993536] [2023-08-27 13:44:42,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845993536] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:42,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:44:42,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:44:42,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240285360] [2023-08-27 13:44:42,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:42,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:44:42,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:42,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:44:42,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:44:42,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 633 [2023-08-27 13:44:42,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 61 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:42,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:42,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 633 [2023-08-27 13:44:42,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:42,585 INFO L124 PetriNetUnfolderBase]: 1108/1628 cut-off events. [2023-08-27 13:44:42,585 INFO L125 PetriNetUnfolderBase]: For 316/316 co-relation queries the response was YES. [2023-08-27 13:44:42,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3947 conditions, 1628 events. 1108/1628 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6629 event pairs, 389 based on Foata normal form. 0/1022 useless extension candidates. Maximal degree in co-relation 3935. Up to 961 conditions per place. [2023-08-27 13:44:42,594 INFO L140 encePairwiseOnDemand]: 630/633 looper letters, 76 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-08-27 13:44:42,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 78 transitions, 434 flow [2023-08-27 13:44:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:44:42,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:44:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 797 transitions. [2023-08-27 13:44:42,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41969457609268035 [2023-08-27 13:44:42,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 797 transitions. [2023-08-27 13:44:42,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 797 transitions. [2023-08-27 13:44:42,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:42,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 797 transitions. [2023-08-27 13:44:42,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:42,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:42,602 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:42,602 INFO L175 Difference]: Start difference. First operand has 43 places, 61 transitions, 236 flow. Second operand 3 states and 797 transitions. [2023-08-27 13:44:42,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 78 transitions, 434 flow [2023-08-27 13:44:42,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 431 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:44:42,605 INFO L231 Difference]: Finished difference. Result has 45 places, 61 transitions, 241 flow [2023-08-27 13:44:42,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=45, PETRI_TRANSITIONS=61} [2023-08-27 13:44:42,605 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2023-08-27 13:44:42,606 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 61 transitions, 241 flow [2023-08-27 13:44:42,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:42,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:42,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:44:42,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 13:44:42,606 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:42,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:42,607 INFO L85 PathProgramCache]: Analyzing trace with hash 410656618, now seen corresponding path program 1 times [2023-08-27 13:44:42,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:42,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270522190] [2023-08-27 13:44:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:42,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:42,654 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 13:44:42,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:42,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270522190] [2023-08-27 13:44:42,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270522190] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:42,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:44:42,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:44:42,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280980311] [2023-08-27 13:44:42,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:42,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:44:42,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:42,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:44:42,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:44:42,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 633 [2023-08-27 13:44:42,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 61 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:42,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:42,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 633 [2023-08-27 13:44:42,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:43,070 INFO L124 PetriNetUnfolderBase]: 1550/2238 cut-off events. [2023-08-27 13:44:43,070 INFO L125 PetriNetUnfolderBase]: For 779/779 co-relation queries the response was YES. [2023-08-27 13:44:43,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5609 conditions, 2238 events. 1550/2238 cut-off events. For 779/779 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9900 event pairs, 613 based on Foata normal form. 0/1610 useless extension candidates. Maximal degree in co-relation 5595. Up to 1215 conditions per place. [2023-08-27 13:44:43,083 INFO L140 encePairwiseOnDemand]: 629/633 looper letters, 81 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-08-27 13:44:43,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 85 transitions, 490 flow [2023-08-27 13:44:43,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:44:43,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:44:43,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 806 transitions. [2023-08-27 13:44:43,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42443391258557134 [2023-08-27 13:44:43,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 806 transitions. [2023-08-27 13:44:43,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 806 transitions. [2023-08-27 13:44:43,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:43,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 806 transitions. [2023-08-27 13:44:43,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:43,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:43,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:43,090 INFO L175 Difference]: Start difference. First operand has 45 places, 61 transitions, 241 flow. Second operand 3 states and 806 transitions. [2023-08-27 13:44:43,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 85 transitions, 490 flow [2023-08-27 13:44:43,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 85 transitions, 487 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:44:43,093 INFO L231 Difference]: Finished difference. Result has 48 places, 63 transitions, 269 flow [2023-08-27 13:44:43,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=48, PETRI_TRANSITIONS=63} [2023-08-27 13:44:43,094 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-27 13:44:43,094 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 63 transitions, 269 flow [2023-08-27 13:44:43,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:43,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:43,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:44:43,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 13:44:43,094 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:43,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:43,095 INFO L85 PathProgramCache]: Analyzing trace with hash -154545341, now seen corresponding path program 1 times [2023-08-27 13:44:43,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:43,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085926091] [2023-08-27 13:44:43,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:43,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:43,269 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 13:44:43,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:43,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085926091] [2023-08-27 13:44:43,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085926091] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:43,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:44:43,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 13:44:43,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644827443] [2023-08-27 13:44:43,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:43,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 13:44:43,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:43,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 13:44:43,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 13:44:43,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 633 [2023-08-27 13:44:43,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 63 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 240.8) internal successors, (1204), 5 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:43,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:43,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 633 [2023-08-27 13:44:43,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:43,650 INFO L124 PetriNetUnfolderBase]: 1390/2012 cut-off events. [2023-08-27 13:44:43,650 INFO L125 PetriNetUnfolderBase]: For 1680/1680 co-relation queries the response was YES. [2023-08-27 13:44:43,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5473 conditions, 2012 events. 1390/2012 cut-off events. For 1680/1680 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8317 event pairs, 671 based on Foata normal form. 28/1550 useless extension candidates. Maximal degree in co-relation 5456. Up to 1835 conditions per place. [2023-08-27 13:44:43,665 INFO L140 encePairwiseOnDemand]: 630/633 looper letters, 72 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-27 13:44:43,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 74 transitions, 436 flow [2023-08-27 13:44:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:44:43,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:44:43,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 764 transitions. [2023-08-27 13:44:43,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40231700895208006 [2023-08-27 13:44:43,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 764 transitions. [2023-08-27 13:44:43,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 764 transitions. [2023-08-27 13:44:43,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:43,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 764 transitions. [2023-08-27 13:44:43,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:43,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:43,673 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:43,673 INFO L175 Difference]: Start difference. First operand has 48 places, 63 transitions, 269 flow. Second operand 3 states and 764 transitions. [2023-08-27 13:44:43,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 74 transitions, 436 flow [2023-08-27 13:44:43,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 74 transitions, 430 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 13:44:43,678 INFO L231 Difference]: Finished difference. Result has 48 places, 62 transitions, 259 flow [2023-08-27 13:44:43,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=48, PETRI_TRANSITIONS=62} [2023-08-27 13:44:43,679 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-27 13:44:43,679 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 62 transitions, 259 flow [2023-08-27 13:44:43,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 240.8) internal successors, (1204), 5 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:43,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:43,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:44:43,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 13:44:43,680 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:43,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:43,681 INFO L85 PathProgramCache]: Analyzing trace with hash -495986514, now seen corresponding path program 1 times [2023-08-27 13:44:43,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:43,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127911900] [2023-08-27 13:44:43,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:43,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:43,769 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 13:44:43,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:43,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127911900] [2023-08-27 13:44:43,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127911900] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:43,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:44:43,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:44:43,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477935761] [2023-08-27 13:44:43,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:43,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 13:44:43,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:43,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 13:44:43,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 13:44:43,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 633 [2023-08-27 13:44:43,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 62 transitions, 259 flow. Second operand has 4 states, 4 states have (on average 218.5) internal successors, (874), 4 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:43,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:43,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 633 [2023-08-27 13:44:43,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:44,310 INFO L124 PetriNetUnfolderBase]: 2052/2995 cut-off events. [2023-08-27 13:44:44,310 INFO L125 PetriNetUnfolderBase]: For 1989/1989 co-relation queries the response was YES. [2023-08-27 13:44:44,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7922 conditions, 2995 events. 2052/2995 cut-off events. For 1989/1989 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 13761 event pairs, 1514 based on Foata normal form. 72/2417 useless extension candidates. Maximal degree in co-relation 7905. Up to 2011 conditions per place. [2023-08-27 13:44:44,325 INFO L140 encePairwiseOnDemand]: 622/633 looper letters, 98 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2023-08-27 13:44:44,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 108 transitions, 655 flow [2023-08-27 13:44:44,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 13:44:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 13:44:44,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1149 transitions. [2023-08-27 13:44:44,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3630331753554502 [2023-08-27 13:44:44,329 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1149 transitions. [2023-08-27 13:44:44,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1149 transitions. [2023-08-27 13:44:44,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:44,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1149 transitions. [2023-08-27 13:44:44,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 229.8) internal successors, (1149), 5 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:44,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 633.0) internal successors, (3798), 6 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:44,335 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 633.0) internal successors, (3798), 6 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:44,335 INFO L175 Difference]: Start difference. First operand has 48 places, 62 transitions, 259 flow. Second operand 5 states and 1149 transitions. [2023-08-27 13:44:44,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 108 transitions, 655 flow [2023-08-27 13:44:44,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 108 transitions, 649 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 13:44:44,339 INFO L231 Difference]: Finished difference. Result has 52 places, 69 transitions, 345 flow [2023-08-27 13:44:44,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=52, PETRI_TRANSITIONS=69} [2023-08-27 13:44:44,340 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-08-27 13:44:44,340 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 69 transitions, 345 flow [2023-08-27 13:44:44,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 218.5) internal successors, (874), 4 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:44,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:44,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:44:44,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 13:44:44,341 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:44,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:44,341 INFO L85 PathProgramCache]: Analyzing trace with hash -495986511, now seen corresponding path program 1 times [2023-08-27 13:44:44,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:44,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583209814] [2023-08-27 13:44:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:44,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:44,377 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 13:44:44,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:44,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583209814] [2023-08-27 13:44:44,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583209814] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:44,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:44:44,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:44:44,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385042054] [2023-08-27 13:44:44,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:44,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:44:44,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:44,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:44:44,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:44:44,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 633 [2023-08-27 13:44:44,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 69 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:44,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:44,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 633 [2023-08-27 13:44:44,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:44,894 INFO L124 PetriNetUnfolderBase]: 2012/2927 cut-off events. [2023-08-27 13:44:44,894 INFO L125 PetriNetUnfolderBase]: For 2281/2281 co-relation queries the response was YES. [2023-08-27 13:44:44,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8153 conditions, 2927 events. 2012/2927 cut-off events. For 2281/2281 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 13086 event pairs, 829 based on Foata normal form. 0/2504 useless extension candidates. Maximal degree in co-relation 8134. Up to 2232 conditions per place. [2023-08-27 13:44:44,910 INFO L140 encePairwiseOnDemand]: 629/633 looper letters, 89 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2023-08-27 13:44:44,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 92 transitions, 626 flow [2023-08-27 13:44:44,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:44:44,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:44:44,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 804 transitions. [2023-08-27 13:44:44,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338072669826227 [2023-08-27 13:44:44,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 804 transitions. [2023-08-27 13:44:44,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 804 transitions. [2023-08-27 13:44:44,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:44,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 804 transitions. [2023-08-27 13:44:44,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:44,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:44,918 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:44,918 INFO L175 Difference]: Start difference. First operand has 52 places, 69 transitions, 345 flow. Second operand 3 states and 804 transitions. [2023-08-27 13:44:44,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 92 transitions, 626 flow [2023-08-27 13:44:44,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 92 transitions, 620 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 13:44:44,922 INFO L231 Difference]: Finished difference. Result has 55 places, 70 transitions, 359 flow [2023-08-27 13:44:44,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=359, PETRI_PLACES=55, PETRI_TRANSITIONS=70} [2023-08-27 13:44:44,922 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-08-27 13:44:44,922 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 70 transitions, 359 flow [2023-08-27 13:44:44,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:44,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:44,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:44:44,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 13:44:44,923 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:44,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:44,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1804288769, now seen corresponding path program 1 times [2023-08-27 13:44:44,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:44,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879145268] [2023-08-27 13:44:44,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:44,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:45,049 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 13:44:45,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:45,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879145268] [2023-08-27 13:44:45,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879145268] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:44:45,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572085021] [2023-08-27 13:44:45,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:45,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:45,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:44:45,051 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 13:44:45,075 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 13:44:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:45,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 13:44:45,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:44:45,225 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 13:44:45,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 13:44:45,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572085021] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:45,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 13:44:45,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-27 13:44:45,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017872251] [2023-08-27 13:44:45,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:45,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 13:44:45,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:45,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 13:44:45,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 13:44:45,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 633 [2023-08-27 13:44:45,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 70 transitions, 359 flow. Second operand has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:45,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:45,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 633 [2023-08-27 13:44:45,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:45,613 INFO L124 PetriNetUnfolderBase]: 1416/2077 cut-off events. [2023-08-27 13:44:45,613 INFO L125 PetriNetUnfolderBase]: For 2411/2411 co-relation queries the response was YES. [2023-08-27 13:44:45,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6321 conditions, 2077 events. 1416/2077 cut-off events. For 2411/2411 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8840 event pairs, 1068 based on Foata normal form. 14/1942 useless extension candidates. Maximal degree in co-relation 6299. Up to 1977 conditions per place. [2023-08-27 13:44:45,621 INFO L140 encePairwiseOnDemand]: 625/633 looper letters, 88 selfloop transitions, 10 changer transitions 0/98 dead transitions. [2023-08-27 13:44:45,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 98 transitions, 648 flow [2023-08-27 13:44:45,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 13:44:45,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 13:44:45,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1114 transitions. [2023-08-27 13:44:45,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35197472353870457 [2023-08-27 13:44:45,624 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1114 transitions. [2023-08-27 13:44:45,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1114 transitions. [2023-08-27 13:44:45,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:45,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1114 transitions. [2023-08-27 13:44:45,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 222.8) internal successors, (1114), 5 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:45,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 633.0) internal successors, (3798), 6 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:45,631 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 633.0) internal successors, (3798), 6 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:45,631 INFO L175 Difference]: Start difference. First operand has 55 places, 70 transitions, 359 flow. Second operand 5 states and 1114 transitions. [2023-08-27 13:44:45,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 98 transitions, 648 flow [2023-08-27 13:44:45,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 642 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 13:44:45,635 INFO L231 Difference]: Finished difference. Result has 58 places, 70 transitions, 382 flow [2023-08-27 13:44:45,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=382, PETRI_PLACES=58, PETRI_TRANSITIONS=70} [2023-08-27 13:44:45,636 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-08-27 13:44:45,636 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 70 transitions, 382 flow [2023-08-27 13:44:45,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:45,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:45,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:44:45,645 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 13:44:45,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-27 13:44:45,843 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:45,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:45,843 INFO L85 PathProgramCache]: Analyzing trace with hash 507438619, now seen corresponding path program 1 times [2023-08-27 13:44:45,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:45,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025628807] [2023-08-27 13:44:45,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:45,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:45,941 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 13:44:45,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:45,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025628807] [2023-08-27 13:44:45,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025628807] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:44:45,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527092251] [2023-08-27 13:44:45,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:45,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:45,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:44:45,942 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 13:44:45,945 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 13:44:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:46,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 13:44:46,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:44:46,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 13:44:46,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 13:44:46,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527092251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:46,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 13:44:46,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-27 13:44:46,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527289569] [2023-08-27 13:44:46,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:46,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:44:46,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:46,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:44:46,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 13:44:46,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 633 [2023-08-27 13:44:46,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 70 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:46,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:46,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 633 [2023-08-27 13:44:46,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:46,227 INFO L124 PetriNetUnfolderBase]: 694/1059 cut-off events. [2023-08-27 13:44:46,227 INFO L125 PetriNetUnfolderBase]: For 1281/1281 co-relation queries the response was YES. [2023-08-27 13:44:46,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2921 conditions, 1059 events. 694/1059 cut-off events. For 1281/1281 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3934 event pairs, 480 based on Foata normal form. 198/1192 useless extension candidates. Maximal degree in co-relation 2898. Up to 1059 conditions per place. [2023-08-27 13:44:46,231 INFO L140 encePairwiseOnDemand]: 628/633 looper letters, 63 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-08-27 13:44:46,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 472 flow [2023-08-27 13:44:46,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:44:46,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:44:46,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 789 transitions. [2023-08-27 13:44:46,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154818325434439 [2023-08-27 13:44:46,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 789 transitions. [2023-08-27 13:44:46,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 789 transitions. [2023-08-27 13:44:46,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:46,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 789 transitions. [2023-08-27 13:44:46,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:46,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:46,238 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:46,239 INFO L175 Difference]: Start difference. First operand has 58 places, 70 transitions, 382 flow. Second operand 3 states and 789 transitions. [2023-08-27 13:44:46,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 472 flow [2023-08-27 13:44:46,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 448 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 13:44:46,241 INFO L231 Difference]: Finished difference. Result has 50 places, 64 transitions, 322 flow [2023-08-27 13:44:46,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=50, PETRI_TRANSITIONS=64} [2023-08-27 13:44:46,242 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-08-27 13:44:46,242 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 64 transitions, 322 flow [2023-08-27 13:44:46,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:46,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:46,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:44:46,251 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 13:44:46,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:46,449 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:46,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:46,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1449270476, now seen corresponding path program 1 times [2023-08-27 13:44:46,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:46,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046687193] [2023-08-27 13:44:46,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:46,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:46,612 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 13:44:46,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:46,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046687193] [2023-08-27 13:44:46,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046687193] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:44:46,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489194735] [2023-08-27 13:44:46,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:46,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:46,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:44:46,614 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 13:44:46,616 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 13:44:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:46,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 13:44:46,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:44:46,746 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 13:44:46,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 13:44:46,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489194735] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:46,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 13:44:46,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2023-08-27 13:44:46,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415053580] [2023-08-27 13:44:46,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:46,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:44:46,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:46,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:44:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 13:44:46,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 633 [2023-08-27 13:44:46,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 64 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:46,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:46,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 633 [2023-08-27 13:44:46,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:46,892 INFO L124 PetriNetUnfolderBase]: 500/783 cut-off events. [2023-08-27 13:44:46,893 INFO L125 PetriNetUnfolderBase]: For 483/483 co-relation queries the response was YES. [2023-08-27 13:44:46,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 783 events. 500/783 cut-off events. For 483/483 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2740 event pairs, 322 based on Foata normal form. 82/820 useless extension candidates. Maximal degree in co-relation 2097. Up to 783 conditions per place. [2023-08-27 13:44:46,896 INFO L140 encePairwiseOnDemand]: 631/633 looper letters, 62 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-08-27 13:44:46,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 63 transitions, 444 flow [2023-08-27 13:44:46,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:44:46,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:44:46,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 788 transitions. [2023-08-27 13:44:46,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41495523959978936 [2023-08-27 13:44:46,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 788 transitions. [2023-08-27 13:44:46,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 788 transitions. [2023-08-27 13:44:46,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:46,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 788 transitions. [2023-08-27 13:44:46,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:46,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:46,903 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:46,903 INFO L175 Difference]: Start difference. First operand has 50 places, 64 transitions, 322 flow. Second operand 3 states and 788 transitions. [2023-08-27 13:44:46,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 63 transitions, 444 flow [2023-08-27 13:44:46,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 63 transitions, 441 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 13:44:46,905 INFO L231 Difference]: Finished difference. Result has 49 places, 63 transitions, 317 flow [2023-08-27 13:44:46,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=49, PETRI_TRANSITIONS=63} [2023-08-27 13:44:46,906 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-08-27 13:44:46,906 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 63 transitions, 317 flow [2023-08-27 13:44:46,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:46,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:46,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:44:46,918 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 13:44:47,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:47,118 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:47,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:47,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1179484016, now seen corresponding path program 1 times [2023-08-27 13:44:47,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:47,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091050847] [2023-08-27 13:44:47,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:47,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:47,273 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 13:44:47,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:47,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091050847] [2023-08-27 13:44:47,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091050847] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:44:47,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023659269] [2023-08-27 13:44:47,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:47,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:47,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:44:47,274 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 13:44:47,297 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 13:44:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:47,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 13:44:47,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:44:47,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 13:44:47,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 13:44:47,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023659269] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:47,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 13:44:47,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-27 13:44:47,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80871099] [2023-08-27 13:44:47,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:47,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 13:44:47,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:47,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 13:44:47,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 13:44:47,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 633 [2023-08-27 13:44:47,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 63 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:47,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:47,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 633 [2023-08-27 13:44:47,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:47,623 INFO L124 PetriNetUnfolderBase]: 428/681 cut-off events. [2023-08-27 13:44:47,623 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2023-08-27 13:44:47,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1814 conditions, 681 events. 428/681 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2254 event pairs, 130 based on Foata normal form. 12/648 useless extension candidates. Maximal degree in co-relation 1793. Up to 293 conditions per place. [2023-08-27 13:44:47,626 INFO L140 encePairwiseOnDemand]: 629/633 looper letters, 84 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2023-08-27 13:44:47,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 88 transitions, 559 flow [2023-08-27 13:44:47,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 13:44:47,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 13:44:47,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1041 transitions. [2023-08-27 13:44:47,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41113744075829384 [2023-08-27 13:44:47,628 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1041 transitions. [2023-08-27 13:44:47,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1041 transitions. [2023-08-27 13:44:47,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:47,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1041 transitions. [2023-08-27 13:44:47,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 260.25) internal successors, (1041), 4 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:47,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:47,634 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:47,634 INFO L175 Difference]: Start difference. First operand has 49 places, 63 transitions, 317 flow. Second operand 4 states and 1041 transitions. [2023-08-27 13:44:47,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 88 transitions, 559 flow [2023-08-27 13:44:47,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 556 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 13:44:47,636 INFO L231 Difference]: Finished difference. Result has 51 places, 63 transitions, 322 flow [2023-08-27 13:44:47,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=322, PETRI_PLACES=51, PETRI_TRANSITIONS=63} [2023-08-27 13:44:47,636 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2023-08-27 13:44:47,637 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 63 transitions, 322 flow [2023-08-27 13:44:47,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:47,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:47,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:44:47,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 13:44:47,847 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,SelfDestructingSolverStorable14 [2023-08-27 13:44:47,847 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:47,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:47,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1977708759, now seen corresponding path program 1 times [2023-08-27 13:44:47,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:47,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619485074] [2023-08-27 13:44:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:47,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:47,986 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 13:44:47,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:47,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619485074] [2023-08-27 13:44:47,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619485074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:47,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:44:47,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 13:44:47,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365846686] [2023-08-27 13:44:47,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:47,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 13:44:47,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:47,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 13:44:47,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 13:44:47,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 633 [2023-08-27 13:44:47,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 63 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:47,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:47,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 633 [2023-08-27 13:44:47,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:48,189 INFO L124 PetriNetUnfolderBase]: 786/1257 cut-off events. [2023-08-27 13:44:48,189 INFO L125 PetriNetUnfolderBase]: For 585/585 co-relation queries the response was YES. [2023-08-27 13:44:48,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3339 conditions, 1257 events. 786/1257 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5082 event pairs, 516 based on Foata normal form. 0/1188 useless extension candidates. Maximal degree in co-relation 3317. Up to 669 conditions per place. [2023-08-27 13:44:48,194 INFO L140 encePairwiseOnDemand]: 628/633 looper letters, 90 selfloop transitions, 9 changer transitions 0/99 dead transitions. [2023-08-27 13:44:48,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 99 transitions, 675 flow [2023-08-27 13:44:48,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 13:44:48,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 13:44:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 917 transitions. [2023-08-27 13:44:48,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36216429699842023 [2023-08-27 13:44:48,208 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 917 transitions. [2023-08-27 13:44:48,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 917 transitions. [2023-08-27 13:44:48,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:48,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 917 transitions. [2023-08-27 13:44:48,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 229.25) internal successors, (917), 4 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:48,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:48,214 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:48,214 INFO L175 Difference]: Start difference. First operand has 51 places, 63 transitions, 322 flow. Second operand 4 states and 917 transitions. [2023-08-27 13:44:48,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 99 transitions, 675 flow [2023-08-27 13:44:48,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 99 transitions, 667 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 13:44:48,218 INFO L231 Difference]: Finished difference. Result has 53 places, 63 transitions, 344 flow [2023-08-27 13:44:48,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=53, PETRI_TRANSITIONS=63} [2023-08-27 13:44:48,219 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-08-27 13:44:48,219 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 63 transitions, 344 flow [2023-08-27 13:44:48,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:48,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:48,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:44:48,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 13:44:48,220 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:48,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:48,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1977708754, now seen corresponding path program 1 times [2023-08-27 13:44:48,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:48,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470934061] [2023-08-27 13:44:48,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:48,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:48,338 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 13:44:48,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:48,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470934061] [2023-08-27 13:44:48,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470934061] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:48,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:44:48,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 13:44:48,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286347557] [2023-08-27 13:44:48,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:48,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 13:44:48,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:48,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 13:44:48,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 13:44:48,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 633 [2023-08-27 13:44:48,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 63 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:48,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:48,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 633 [2023-08-27 13:44:48,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:48,671 INFO L124 PetriNetUnfolderBase]: 1334/2173 cut-off events. [2023-08-27 13:44:48,671 INFO L125 PetriNetUnfolderBase]: For 1008/1008 co-relation queries the response was YES. [2023-08-27 13:44:48,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5586 conditions, 2173 events. 1334/2173 cut-off events. For 1008/1008 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10266 event pairs, 916 based on Foata normal form. 56/2181 useless extension candidates. Maximal degree in co-relation 5563. Up to 1223 conditions per place. [2023-08-27 13:44:48,679 INFO L140 encePairwiseOnDemand]: 627/633 looper letters, 71 selfloop transitions, 14 changer transitions 0/85 dead transitions. [2023-08-27 13:44:48,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 85 transitions, 591 flow [2023-08-27 13:44:48,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 13:44:48,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 13:44:48,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 915 transitions. [2023-08-27 13:44:48,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3613744075829384 [2023-08-27 13:44:48,683 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 915 transitions. [2023-08-27 13:44:48,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 915 transitions. [2023-08-27 13:44:48,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:48,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 915 transitions. [2023-08-27 13:44:48,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 228.75) internal successors, (915), 4 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:48,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:48,688 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:48,688 INFO L175 Difference]: Start difference. First operand has 53 places, 63 transitions, 344 flow. Second operand 4 states and 915 transitions. [2023-08-27 13:44:48,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 85 transitions, 591 flow [2023-08-27 13:44:48,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 85 transitions, 575 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-27 13:44:48,692 INFO L231 Difference]: Finished difference. Result has 55 places, 63 transitions, 374 flow [2023-08-27 13:44:48,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=55, PETRI_TRANSITIONS=63} [2023-08-27 13:44:48,692 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-08-27 13:44:48,692 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 63 transitions, 374 flow [2023-08-27 13:44:48,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:48,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:48,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:44:48,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 13:44:48,693 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:48,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:48,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1642348824, now seen corresponding path program 1 times [2023-08-27 13:44:48,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:48,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025708749] [2023-08-27 13:44:48,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:48,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:48,831 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 13:44:48,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:48,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025708749] [2023-08-27 13:44:48,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025708749] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:44:48,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113134035] [2023-08-27 13:44:48,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:48,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:48,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:44:48,833 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 13:44:48,859 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 13:44:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:48,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 13:44:48,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:44:48,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 13:44:48,993 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 13:44:48,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113134035] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:48,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 13:44:48,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-27 13:44:48,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037596553] [2023-08-27 13:44:48,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:48,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:44:48,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:48,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:44:48,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 13:44:48,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 633 [2023-08-27 13:44:48,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 63 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:48,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:48,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 633 [2023-08-27 13:44:48,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:49,284 INFO L124 PetriNetUnfolderBase]: 1132/1903 cut-off events. [2023-08-27 13:44:49,285 INFO L125 PetriNetUnfolderBase]: For 967/967 co-relation queries the response was YES. [2023-08-27 13:44:49,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4801 conditions, 1903 events. 1132/1903 cut-off events. For 967/967 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9064 event pairs, 800 based on Foata normal form. 88/1986 useless extension candidates. Maximal degree in co-relation 4777. Up to 1903 conditions per place. [2023-08-27 13:44:49,293 INFO L140 encePairwiseOnDemand]: 630/633 looper letters, 59 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-08-27 13:44:49,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 60 transitions, 473 flow [2023-08-27 13:44:49,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:44:49,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:44:49,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 784 transitions. [2023-08-27 13:44:49,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41284886782517116 [2023-08-27 13:44:49,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 784 transitions. [2023-08-27 13:44:49,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 784 transitions. [2023-08-27 13:44:49,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:49,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 784 transitions. [2023-08-27 13:44:49,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:49,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:49,299 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:49,299 INFO L175 Difference]: Start difference. First operand has 55 places, 63 transitions, 374 flow. Second operand 3 states and 784 transitions. [2023-08-27 13:44:49,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 60 transitions, 473 flow [2023-08-27 13:44:49,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 418 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-27 13:44:49,303 INFO L231 Difference]: Finished difference. Result has 49 places, 60 transitions, 300 flow [2023-08-27 13:44:49,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=49, PETRI_TRANSITIONS=60} [2023-08-27 13:44:49,303 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-08-27 13:44:49,303 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 60 transitions, 300 flow [2023-08-27 13:44:49,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:49,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:49,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:44:49,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 13:44:49,509 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,SelfDestructingSolverStorable17 [2023-08-27 13:44:49,510 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:49,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:49,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1041802729, now seen corresponding path program 1 times [2023-08-27 13:44:49,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:49,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053418104] [2023-08-27 13:44:49,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:49,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:49,695 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 13:44:49,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:49,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053418104] [2023-08-27 13:44:49,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053418104] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:44:49,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135522587] [2023-08-27 13:44:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:49,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:49,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:44:49,697 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 13:44:49,699 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 13:44:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:49,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 13:44:49,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:44:49,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 13:44:49,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 13:44:49,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135522587] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:49,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 13:44:49,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-27 13:44:49,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640588897] [2023-08-27 13:44:49,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:49,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:44:49,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:49,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:44:49,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 13:44:49,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 633 [2023-08-27 13:44:49,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 60 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:49,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:49,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 633 [2023-08-27 13:44:49,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:50,057 INFO L124 PetriNetUnfolderBase]: 544/931 cut-off events. [2023-08-27 13:44:50,057 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-08-27 13:44:50,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 931 events. 544/931 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3754 event pairs, 372 based on Foata normal form. 16/942 useless extension candidates. Maximal degree in co-relation 2311. Up to 931 conditions per place. [2023-08-27 13:44:50,061 INFO L140 encePairwiseOnDemand]: 631/633 looper letters, 58 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-08-27 13:44:50,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 59 transitions, 412 flow [2023-08-27 13:44:50,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:44:50,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:44:50,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 782 transitions. [2023-08-27 13:44:50,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41179568193786203 [2023-08-27 13:44:50,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 782 transitions. [2023-08-27 13:44:50,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 782 transitions. [2023-08-27 13:44:50,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:50,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 782 transitions. [2023-08-27 13:44:50,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:50,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:50,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:50,067 INFO L175 Difference]: Start difference. First operand has 49 places, 60 transitions, 300 flow. Second operand 3 states and 782 transitions. [2023-08-27 13:44:50,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 59 transitions, 412 flow [2023-08-27 13:44:50,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 59 transitions, 404 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 13:44:50,070 INFO L231 Difference]: Finished difference. Result has 48 places, 59 transitions, 288 flow [2023-08-27 13:44:50,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=48, PETRI_TRANSITIONS=59} [2023-08-27 13:44:50,070 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-27 13:44:50,070 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 59 transitions, 288 flow [2023-08-27 13:44:50,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:50,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:50,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:44:50,082 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 13:44:50,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:50,282 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:50,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:50,283 INFO L85 PathProgramCache]: Analyzing trace with hash -663401649, now seen corresponding path program 1 times [2023-08-27 13:44:50,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:50,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658199438] [2023-08-27 13:44:50,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:50,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:50,388 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 13:44:50,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:50,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658199438] [2023-08-27 13:44:50,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658199438] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:50,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:44:50,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:44:50,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026969170] [2023-08-27 13:44:50,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:50,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:44:50,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:50,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:44:50,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:44:50,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 633 [2023-08-27 13:44:50,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 59 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:50,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:50,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 633 [2023-08-27 13:44:50,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:50,494 INFO L124 PetriNetUnfolderBase]: 280/479 cut-off events. [2023-08-27 13:44:50,494 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-08-27 13:44:50,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 479 events. 280/479 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1521 event pairs, 118 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 1204. Up to 273 conditions per place. [2023-08-27 13:44:50,496 INFO L140 encePairwiseOnDemand]: 630/633 looper letters, 56 selfloop transitions, 2 changer transitions 10/68 dead transitions. [2023-08-27 13:44:50,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 68 transitions, 445 flow [2023-08-27 13:44:50,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:44:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:44:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 792 transitions. [2023-08-27 13:44:50,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41706161137440756 [2023-08-27 13:44:50,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 792 transitions. [2023-08-27 13:44:50,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 792 transitions. [2023-08-27 13:44:50,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:50,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 792 transitions. [2023-08-27 13:44:50,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:50,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:50,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:50,503 INFO L175 Difference]: Start difference. First operand has 48 places, 59 transitions, 288 flow. Second operand 3 states and 792 transitions. [2023-08-27 13:44:50,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 68 transitions, 445 flow [2023-08-27 13:44:50,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 68 transitions, 444 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:44:50,505 INFO L231 Difference]: Finished difference. Result has 50 places, 51 transitions, 227 flow [2023-08-27 13:44:50,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2023-08-27 13:44:50,505 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-08-27 13:44:50,505 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 227 flow [2023-08-27 13:44:50,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:50,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:50,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:44:50,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 13:44:50,506 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:50,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:50,506 INFO L85 PathProgramCache]: Analyzing trace with hash -535258354, now seen corresponding path program 1 times [2023-08-27 13:44:50,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:50,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030957038] [2023-08-27 13:44:50,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:50,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:50,704 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 13:44:50,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:50,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030957038] [2023-08-27 13:44:50,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030957038] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:44:50,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309027665] [2023-08-27 13:44:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:50,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:50,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:44:50,709 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 13:44:50,711 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 13:44:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:50,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 13:44:50,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:44:50,973 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 13:44:50,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:44:51,274 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 13:44:51,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309027665] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:44:51,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:44:51,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 6 [2023-08-27 13:44:51,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979595308] [2023-08-27 13:44:51,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:44:51,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 13:44:51,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:51,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 13:44:51,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-08-27 13:44:51,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 633 [2023-08-27 13:44:51,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 227 flow. Second operand has 8 states, 8 states have (on average 250.875) internal successors, (2007), 8 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:51,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:51,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 633 [2023-08-27 13:44:51,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:51,444 INFO L124 PetriNetUnfolderBase]: 233/379 cut-off events. [2023-08-27 13:44:51,444 INFO L125 PetriNetUnfolderBase]: For 179/179 co-relation queries the response was YES. [2023-08-27 13:44:51,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 379 events. 233/379 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1048 event pairs, 53 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 987. Up to 189 conditions per place. [2023-08-27 13:44:51,447 INFO L140 encePairwiseOnDemand]: 629/633 looper letters, 54 selfloop transitions, 3 changer transitions 13/70 dead transitions. [2023-08-27 13:44:51,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 413 flow [2023-08-27 13:44:51,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 13:44:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 13:44:51,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1019 transitions. [2023-08-27 13:44:51,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40244865718799366 [2023-08-27 13:44:51,449 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1019 transitions. [2023-08-27 13:44:51,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1019 transitions. [2023-08-27 13:44:51,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:51,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1019 transitions. [2023-08-27 13:44:51,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 254.75) internal successors, (1019), 4 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:51,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:51,456 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:51,456 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 227 flow. Second operand 4 states and 1019 transitions. [2023-08-27 13:44:51,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 413 flow [2023-08-27 13:44:51,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 393 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-27 13:44:51,458 INFO L231 Difference]: Finished difference. Result has 47 places, 51 transitions, 217 flow [2023-08-27 13:44:51,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=217, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2023-08-27 13:44:51,459 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2023-08-27 13:44:51,459 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 217 flow [2023-08-27 13:44:51,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 250.875) internal successors, (2007), 8 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:51,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:51,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:44:51,471 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 13:44:51,665 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,SelfDestructingSolverStorable20 [2023-08-27 13:44:51,665 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:44:51,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:51,666 INFO L85 PathProgramCache]: Analyzing trace with hash -480871935, now seen corresponding path program 1 times [2023-08-27 13:44:51,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:51,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450457475] [2023-08-27 13:44:51,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:51,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:52,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:44:52,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:52,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450457475] [2023-08-27 13:44:52,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450457475] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:44:52,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354425149] [2023-08-27 13:44:52,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:52,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:52,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:44:52,359 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 13:44:52,361 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 13:44:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:52,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 13:44:52,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:44:52,589 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-27 13:44:52,691 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 13:44:52,733 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 13:44:52,779 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 13:44:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:44:52,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:45:00,582 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:45:00,583 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 61 treesize of output 50 [2023-08-27 13:45:00,607 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-27 13:45:00,608 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 194 treesize of output 181 [2023-08-27 13:45:00,626 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 13:45:00,628 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 178 treesize of output 130 [2023-08-27 13:45:00,640 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 13:45:00,640 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 130 treesize of output 106 [2023-08-27 13:45:00,658 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 13:45:00,658 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 58 treesize of output 46 [2023-08-27 13:45:00,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:45:00,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354425149] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:45:00,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:45:00,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 21 [2023-08-27 13:45:00,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237363280] [2023-08-27 13:45:00,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:45:00,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 13:45:00,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:45:00,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 13:45:00,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=375, Unknown=11, NotChecked=0, Total=506 [2023-08-27 13:45:00,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 633 [2023-08-27 13:45:00,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 217 flow. Second operand has 23 states, 23 states have (on average 160.8695652173913) internal successors, (3700), 23 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:00,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:45:00,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 633 [2023-08-27 13:45:00,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:45:07,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:09,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:11,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:13,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:15,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:17,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:19,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:25,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:27,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:29,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:31,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:33,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:35,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:37,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:39,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:41,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:43,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:45,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:47,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:49,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:51,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:53,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:45:53,969 INFO L124 PetriNetUnfolderBase]: 723/1186 cut-off events. [2023-08-27 13:45:53,969 INFO L125 PetriNetUnfolderBase]: For 621/621 co-relation queries the response was YES. [2023-08-27 13:45:53,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3096 conditions, 1186 events. 723/1186 cut-off events. For 621/621 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5068 event pairs, 94 based on Foata normal form. 3/1182 useless extension candidates. Maximal degree in co-relation 3076. Up to 380 conditions per place. [2023-08-27 13:45:53,973 INFO L140 encePairwiseOnDemand]: 618/633 looper letters, 112 selfloop transitions, 45 changer transitions 48/205 dead transitions. [2023-08-27 13:45:53,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 205 transitions, 1106 flow [2023-08-27 13:45:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-27 13:45:53,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-27 13:45:53,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3649 transitions. [2023-08-27 13:45:53,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26202786155392793 [2023-08-27 13:45:53,982 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3649 transitions. [2023-08-27 13:45:53,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3649 transitions. [2023-08-27 13:45:53,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:45:53,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3649 transitions. [2023-08-27 13:45:53,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 165.86363636363637) internal successors, (3649), 22 states have internal predecessors, (3649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:54,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 633.0) internal successors, (14559), 23 states have internal predecessors, (14559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:54,001 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 633.0) internal successors, (14559), 23 states have internal predecessors, (14559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:54,002 INFO L175 Difference]: Start difference. First operand has 47 places, 51 transitions, 217 flow. Second operand 22 states and 3649 transitions. [2023-08-27 13:45:54,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 205 transitions, 1106 flow [2023-08-27 13:45:54,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 205 transitions, 1091 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 13:45:54,006 INFO L231 Difference]: Finished difference. Result has 76 places, 88 transitions, 570 flow [2023-08-27 13:45:54,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=570, PETRI_PLACES=76, PETRI_TRANSITIONS=88} [2023-08-27 13:45:54,007 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 25 predicate places. [2023-08-27 13:45:54,007 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 88 transitions, 570 flow [2023-08-27 13:45:54,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 160.8695652173913) internal successors, (3700), 23 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:54,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:45:54,009 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:45:54,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 13:45:54,215 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,SelfDestructingSolverStorable21 [2023-08-27 13:45:54,215 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:45:54,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:45:54,216 INFO L85 PathProgramCache]: Analyzing trace with hash -476691087, now seen corresponding path program 2 times [2023-08-27 13:45:54,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:45:54,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77294212] [2023-08-27 13:45:54,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:45:54,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:45:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:45:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 13:45:54,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:45:54,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77294212] [2023-08-27 13:45:54,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77294212] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:45:54,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818317897] [2023-08-27 13:45:54,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 13:45:54,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:45:54,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:45:54,605 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 13:45:54,612 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 13:45:54,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 13:45:54,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:45:54,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 13:45:54,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:45:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 13:45:55,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:45:56,747 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:45:56,747 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 509 treesize of output 600 [2023-08-27 13:45:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 13:45:59,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818317897] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:45:59,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:45:59,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2023-08-27 13:45:59,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625912852] [2023-08-27 13:45:59,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:45:59,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 13:45:59,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:45:59,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 13:45:59,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-08-27 13:45:59,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 633 [2023-08-27 13:45:59,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 88 transitions, 570 flow. Second operand has 14 states, 14 states have (on average 178.35714285714286) internal successors, (2497), 14 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:59,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:45:59,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 633 [2023-08-27 13:45:59,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:46:00,684 INFO L124 PetriNetUnfolderBase]: 1072/1837 cut-off events. [2023-08-27 13:46:00,684 INFO L125 PetriNetUnfolderBase]: For 1742/1742 co-relation queries the response was YES. [2023-08-27 13:46:00,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5501 conditions, 1837 events. 1072/1837 cut-off events. For 1742/1742 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9082 event pairs, 253 based on Foata normal form. 168/2001 useless extension candidates. Maximal degree in co-relation 5471. Up to 347 conditions per place. [2023-08-27 13:46:00,691 INFO L140 encePairwiseOnDemand]: 626/633 looper letters, 135 selfloop transitions, 31 changer transitions 26/192 dead transitions. [2023-08-27 13:46:00,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 192 transitions, 1369 flow [2023-08-27 13:46:00,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 13:46:00,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 13:46:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2042 transitions. [2023-08-27 13:46:00,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932643975298004 [2023-08-27 13:46:00,701 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2042 transitions. [2023-08-27 13:46:00,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2042 transitions. [2023-08-27 13:46:00,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:46:00,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2042 transitions. [2023-08-27 13:46:00,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 185.63636363636363) internal successors, (2042), 11 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:00,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 633.0) internal successors, (7596), 12 states have internal predecessors, (7596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:00,711 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 633.0) internal successors, (7596), 12 states have internal predecessors, (7596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:00,711 INFO L175 Difference]: Start difference. First operand has 76 places, 88 transitions, 570 flow. Second operand 11 states and 2042 transitions. [2023-08-27 13:46:00,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 192 transitions, 1369 flow [2023-08-27 13:46:00,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 192 transitions, 1345 flow, removed 11 selfloop flow, removed 1 redundant places. [2023-08-27 13:46:00,718 INFO L231 Difference]: Finished difference. Result has 90 places, 91 transitions, 688 flow [2023-08-27 13:46:00,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=688, PETRI_PLACES=90, PETRI_TRANSITIONS=91} [2023-08-27 13:46:00,719 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 39 predicate places. [2023-08-27 13:46:00,719 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 91 transitions, 688 flow [2023-08-27 13:46:00,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 178.35714285714286) internal successors, (2497), 14 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:00,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:46:00,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:46:00,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 13:46:00,926 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,SelfDestructingSolverStorable22 [2023-08-27 13:46:00,926 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:46:00,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:46:00,927 INFO L85 PathProgramCache]: Analyzing trace with hash -686223059, now seen corresponding path program 1 times [2023-08-27 13:46:00,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:46:00,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91508586] [2023-08-27 13:46:00,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:46:00,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:46:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:46:01,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 13:46:01,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:46:01,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91508586] [2023-08-27 13:46:01,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91508586] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:46:01,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245620514] [2023-08-27 13:46:01,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:46:01,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:46:01,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:46:01,207 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 13:46:01,210 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 13:46:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:46:01,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 13:46:01,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:46:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 13:46:01,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 13:46:01,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245620514] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:46:01,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 13:46:01,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-08-27 13:46:01,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016835227] [2023-08-27 13:46:01,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:46:01,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 13:46:01,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:46:01,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 13:46:01,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-08-27 13:46:01,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 633 [2023-08-27 13:46:01,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 91 transitions, 688 flow. Second operand has 5 states, 5 states have (on average 215.6) internal successors, (1078), 5 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:01,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:46:01,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 633 [2023-08-27 13:46:01,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:46:01,889 INFO L124 PetriNetUnfolderBase]: 1628/2855 cut-off events. [2023-08-27 13:46:01,890 INFO L125 PetriNetUnfolderBase]: For 5958/5958 co-relation queries the response was YES. [2023-08-27 13:46:01,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9170 conditions, 2855 events. 1628/2855 cut-off events. For 5958/5958 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 16143 event pairs, 1171 based on Foata normal form. 84/2935 useless extension candidates. Maximal degree in co-relation 9133. Up to 1363 conditions per place. [2023-08-27 13:46:01,899 INFO L140 encePairwiseOnDemand]: 625/633 looper letters, 111 selfloop transitions, 25 changer transitions 0/136 dead transitions. [2023-08-27 13:46:01,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 136 transitions, 1281 flow [2023-08-27 13:46:01,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 13:46:01,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 13:46:01,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1327 transitions. [2023-08-27 13:46:01,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34939441811479727 [2023-08-27 13:46:01,901 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1327 transitions. [2023-08-27 13:46:01,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1327 transitions. [2023-08-27 13:46:01,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:46:01,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1327 transitions. [2023-08-27 13:46:01,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 221.16666666666666) internal successors, (1327), 6 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:01,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 633.0) internal successors, (4431), 7 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:01,907 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 633.0) internal successors, (4431), 7 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:01,907 INFO L175 Difference]: Start difference. First operand has 90 places, 91 transitions, 688 flow. Second operand 6 states and 1327 transitions. [2023-08-27 13:46:01,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 136 transitions, 1281 flow [2023-08-27 13:46:01,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 136 transitions, 1201 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-08-27 13:46:01,924 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 679 flow [2023-08-27 13:46:01,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=679, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2023-08-27 13:46:01,924 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 40 predicate places. [2023-08-27 13:46:01,924 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 679 flow [2023-08-27 13:46:01,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.6) internal successors, (1078), 5 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:01,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:46:01,925 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:46:01,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 13:46:02,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:46:02,132 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:46:02,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:46:02,132 INFO L85 PathProgramCache]: Analyzing trace with hash 274155322, now seen corresponding path program 1 times [2023-08-27 13:46:02,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:46:02,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591387395] [2023-08-27 13:46:02,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:46:02,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:46:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:46:03,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 13:46:03,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:46:03,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591387395] [2023-08-27 13:46:03,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591387395] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:46:03,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959525907] [2023-08-27 13:46:03,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:46:03,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:46:03,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:46:03,141 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 13:46:03,143 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 13:46:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:46:03,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 13:46:03,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:46:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 13:46:03,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:46:04,447 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:46:04,447 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 357 treesize of output 464 [2023-08-27 13:46:08,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 13:46:08,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959525907] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:46:08,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:46:08,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 3] total 13 [2023-08-27 13:46:08,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830659921] [2023-08-27 13:46:08,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:46:08,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 13:46:08,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:46:08,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 13:46:08,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-27 13:46:08,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 633 [2023-08-27 13:46:08,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 679 flow. Second operand has 15 states, 15 states have (on average 172.73333333333332) internal successors, (2591), 15 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:08,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:46:08,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 633 [2023-08-27 13:46:08,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:46:09,263 INFO L124 PetriNetUnfolderBase]: 1926/3403 cut-off events. [2023-08-27 13:46:09,263 INFO L125 PetriNetUnfolderBase]: For 5321/5321 co-relation queries the response was YES. [2023-08-27 13:46:09,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10557 conditions, 3403 events. 1926/3403 cut-off events. For 5321/5321 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 20406 event pairs, 520 based on Foata normal form. 4/3406 useless extension candidates. Maximal degree in co-relation 10520. Up to 749 conditions per place. [2023-08-27 13:46:09,276 INFO L140 encePairwiseOnDemand]: 622/633 looper letters, 90 selfloop transitions, 62 changer transitions 32/184 dead transitions. [2023-08-27 13:46:09,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 184 transitions, 1474 flow [2023-08-27 13:46:09,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 13:46:09,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 13:46:09,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2809 transitions. [2023-08-27 13:46:09,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27734992101105843 [2023-08-27 13:46:09,279 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2809 transitions. [2023-08-27 13:46:09,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2809 transitions. [2023-08-27 13:46:09,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:46:09,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2809 transitions. [2023-08-27 13:46:09,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 175.5625) internal successors, (2809), 16 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:09,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 633.0) internal successors, (10761), 17 states have internal predecessors, (10761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:09,288 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 633.0) internal successors, (10761), 17 states have internal predecessors, (10761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:09,289 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 679 flow. Second operand 16 states and 2809 transitions. [2023-08-27 13:46:09,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 184 transitions, 1474 flow [2023-08-27 13:46:09,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 184 transitions, 1430 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 13:46:09,308 INFO L231 Difference]: Finished difference. Result has 106 places, 112 transitions, 997 flow [2023-08-27 13:46:09,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=997, PETRI_PLACES=106, PETRI_TRANSITIONS=112} [2023-08-27 13:46:09,308 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 55 predicate places. [2023-08-27 13:46:09,308 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 112 transitions, 997 flow [2023-08-27 13:46:09,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 172.73333333333332) internal successors, (2591), 15 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:09,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:46:09,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:46:09,315 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 13:46:09,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:46:09,515 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:46:09,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:46:09,515 INFO L85 PathProgramCache]: Analyzing trace with hash -36609945, now seen corresponding path program 1 times [2023-08-27 13:46:09,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:46:09,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003818432] [2023-08-27 13:46:09,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:46:09,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:46:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:46:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 13:46:09,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:46:09,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003818432] [2023-08-27 13:46:09,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003818432] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:46:09,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008532790] [2023-08-27 13:46:09,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:46:09,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:46:09,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:46:09,813 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 13:46:09,823 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 13:46:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:46:09,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 13:46:09,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:46:10,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 13:46:10,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:46:10,781 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:46:10,781 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 527 treesize of output 558 [2023-08-27 13:46:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 13:46:11,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008532790] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:46:11,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:46:11,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-08-27 13:46:11,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239192282] [2023-08-27 13:46:11,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:46:11,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 13:46:11,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:46:11,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 13:46:11,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-08-27 13:46:11,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 633 [2023-08-27 13:46:11,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 112 transitions, 997 flow. Second operand has 11 states, 11 states have (on average 214.27272727272728) internal successors, (2357), 11 states have internal predecessors, (2357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:11,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:46:11,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 633 [2023-08-27 13:46:11,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:46:12,220 INFO L124 PetriNetUnfolderBase]: 1856/3303 cut-off events. [2023-08-27 13:46:12,221 INFO L125 PetriNetUnfolderBase]: For 7217/7217 co-relation queries the response was YES. [2023-08-27 13:46:12,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10683 conditions, 3303 events. 1856/3303 cut-off events. For 7217/7217 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19792 event pairs, 536 based on Foata normal form. 24/3326 useless extension candidates. Maximal degree in co-relation 10643. Up to 1119 conditions per place. [2023-08-27 13:46:12,230 INFO L140 encePairwiseOnDemand]: 629/633 looper letters, 97 selfloop transitions, 20 changer transitions 19/136 dead transitions. [2023-08-27 13:46:12,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 136 transitions, 1303 flow [2023-08-27 13:46:12,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 13:46:12,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 13:46:12,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1101 transitions. [2023-08-27 13:46:12,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34786729857819904 [2023-08-27 13:46:12,232 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1101 transitions. [2023-08-27 13:46:12,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1101 transitions. [2023-08-27 13:46:12,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:46:12,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1101 transitions. [2023-08-27 13:46:12,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 220.2) internal successors, (1101), 5 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:12,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 633.0) internal successors, (3798), 6 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:12,235 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 633.0) internal successors, (3798), 6 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:12,235 INFO L175 Difference]: Start difference. First operand has 106 places, 112 transitions, 997 flow. Second operand 5 states and 1101 transitions. [2023-08-27 13:46:12,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 136 transitions, 1303 flow [2023-08-27 13:46:12,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 136 transitions, 1231 flow, removed 21 selfloop flow, removed 8 redundant places. [2023-08-27 13:46:12,261 INFO L231 Difference]: Finished difference. Result has 101 places, 109 transitions, 930 flow [2023-08-27 13:46:12,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=930, PETRI_PLACES=101, PETRI_TRANSITIONS=109} [2023-08-27 13:46:12,261 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 50 predicate places. [2023-08-27 13:46:12,262 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 109 transitions, 930 flow [2023-08-27 13:46:12,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 214.27272727272728) internal successors, (2357), 11 states have internal predecessors, (2357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:12,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:46:12,262 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:46:12,269 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 13:46:12,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 13:46:12,468 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:46:12,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:46:12,468 INFO L85 PathProgramCache]: Analyzing trace with hash 187241953, now seen corresponding path program 3 times [2023-08-27 13:46:12,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:46:12,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587593632] [2023-08-27 13:46:12,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:46:12,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:46:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:46:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 13:46:12,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:46:12,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587593632] [2023-08-27 13:46:12,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587593632] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:46:12,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353253940] [2023-08-27 13:46:12,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 13:46:12,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:46:12,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:46:12,772 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 13:46:12,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 13:46:12,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 13:46:12,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:46:12,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 13:46:12,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:46:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 13:46:13,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:46:13,721 INFO L322 Elim1Store]: treesize reduction 38, result has 77.5 percent of original size [2023-08-27 13:46:13,721 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 578 treesize of output 628 [2023-08-27 13:46:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 13:46:14,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353253940] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:46:14,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:46:14,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 13:46:14,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478982291] [2023-08-27 13:46:14,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:46:14,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 13:46:14,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:46:14,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 13:46:14,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-08-27 13:46:14,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 633 [2023-08-27 13:46:14,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 109 transitions, 930 flow. Second operand has 12 states, 12 states have (on average 175.66666666666666) internal successors, (2108), 12 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:14,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:46:14,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 633 [2023-08-27 13:46:14,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:46:15,147 INFO L124 PetriNetUnfolderBase]: 1668/2997 cut-off events. [2023-08-27 13:46:15,147 INFO L125 PetriNetUnfolderBase]: For 7062/7062 co-relation queries the response was YES. [2023-08-27 13:46:15,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9645 conditions, 2997 events. 1668/2997 cut-off events. For 7062/7062 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 17813 event pairs, 536 based on Foata normal form. 24/3020 useless extension candidates. Maximal degree in co-relation 9608. Up to 603 conditions per place. [2023-08-27 13:46:15,162 INFO L140 encePairwiseOnDemand]: 624/633 looper letters, 60 selfloop transitions, 40 changer transitions 77/177 dead transitions. [2023-08-27 13:46:15,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 177 transitions, 1575 flow [2023-08-27 13:46:15,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 13:46:15,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 13:46:15,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1815 transitions. [2023-08-27 13:46:15,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28672985781990523 [2023-08-27 13:46:15,165 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1815 transitions. [2023-08-27 13:46:15,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1815 transitions. [2023-08-27 13:46:15,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:46:15,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1815 transitions. [2023-08-27 13:46:15,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 181.5) internal successors, (1815), 10 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:15,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 633.0) internal successors, (6963), 11 states have internal predecessors, (6963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:15,172 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 633.0) internal successors, (6963), 11 states have internal predecessors, (6963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:15,172 INFO L175 Difference]: Start difference. First operand has 101 places, 109 transitions, 930 flow. Second operand 10 states and 1815 transitions. [2023-08-27 13:46:15,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 177 transitions, 1575 flow [2023-08-27 13:46:15,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 177 transitions, 1517 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 13:46:15,195 INFO L231 Difference]: Finished difference. Result has 106 places, 92 transitions, 814 flow [2023-08-27 13:46:15,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=814, PETRI_PLACES=106, PETRI_TRANSITIONS=92} [2023-08-27 13:46:15,196 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 55 predicate places. [2023-08-27 13:46:15,196 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 92 transitions, 814 flow [2023-08-27 13:46:15,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 175.66666666666666) internal successors, (2108), 12 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:15,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:46:15,197 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:46:15,207 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 13:46:15,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-27 13:46:15,403 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:46:15,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:46:15,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1149587993, now seen corresponding path program 2 times [2023-08-27 13:46:15,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:46:15,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94597188] [2023-08-27 13:46:15,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:46:15,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:46:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:46:16,105 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 13:46:16,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:46:16,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94597188] [2023-08-27 13:46:16,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94597188] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:46:16,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968373173] [2023-08-27 13:46:16,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 13:46:16,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:46:16,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:46:16,107 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 13:46:16,108 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 13:46:16,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 13:46:16,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:46:16,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 13:46:16,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:46:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 13:46:16,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:46:18,641 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:46:18,641 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 427 treesize of output 625 [2023-08-27 13:46:22,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 13:46:22,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968373173] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:46:22,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:46:22,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2023-08-27 13:46:22,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992529652] [2023-08-27 13:46:22,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:46:22,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 13:46:22,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:46:22,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 13:46:22,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-08-27 13:46:22,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 633 [2023-08-27 13:46:22,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 92 transitions, 814 flow. Second operand has 16 states, 16 states have (on average 170.8125) internal successors, (2733), 16 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:22,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:46:22,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 633 [2023-08-27 13:46:22,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:46:23,503 INFO L124 PetriNetUnfolderBase]: 1259/2210 cut-off events. [2023-08-27 13:46:23,503 INFO L125 PetriNetUnfolderBase]: For 4385/4385 co-relation queries the response was YES. [2023-08-27 13:46:23,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7059 conditions, 2210 events. 1259/2210 cut-off events. For 4385/4385 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11644 event pairs, 252 based on Foata normal form. 48/2257 useless extension candidates. Maximal degree in co-relation 7022. Up to 392 conditions per place. [2023-08-27 13:46:23,512 INFO L140 encePairwiseOnDemand]: 626/633 looper letters, 130 selfloop transitions, 39 changer transitions 52/221 dead transitions. [2023-08-27 13:46:23,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 221 transitions, 1740 flow [2023-08-27 13:46:23,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 13:46:23,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 13:46:23,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2492 transitions. [2023-08-27 13:46:23,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2812006319115324 [2023-08-27 13:46:23,515 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2492 transitions. [2023-08-27 13:46:23,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2492 transitions. [2023-08-27 13:46:23,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:46:23,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2492 transitions. [2023-08-27 13:46:23,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 178.0) internal successors, (2492), 14 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:23,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 633.0) internal successors, (9495), 15 states have internal predecessors, (9495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:23,524 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 633.0) internal successors, (9495), 15 states have internal predecessors, (9495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:23,524 INFO L175 Difference]: Start difference. First operand has 106 places, 92 transitions, 814 flow. Second operand 14 states and 2492 transitions. [2023-08-27 13:46:23,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 221 transitions, 1740 flow [2023-08-27 13:46:23,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 221 transitions, 1616 flow, removed 15 selfloop flow, removed 11 redundant places. [2023-08-27 13:46:23,536 INFO L231 Difference]: Finished difference. Result has 100 places, 102 transitions, 895 flow [2023-08-27 13:46:23,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=895, PETRI_PLACES=100, PETRI_TRANSITIONS=102} [2023-08-27 13:46:23,537 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 49 predicate places. [2023-08-27 13:46:23,537 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 102 transitions, 895 flow [2023-08-27 13:46:23,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 170.8125) internal successors, (2733), 16 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:23,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:46:23,538 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:46:23,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 13:46:23,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-27 13:46:23,743 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:46:23,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:46:23,744 INFO L85 PathProgramCache]: Analyzing trace with hash 218372144, now seen corresponding path program 2 times [2023-08-27 13:46:23,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:46:23,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861038123] [2023-08-27 13:46:23,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:46:23,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:46:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:46:24,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 13:46:24,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:46:24,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861038123] [2023-08-27 13:46:24,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861038123] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:46:24,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448558659] [2023-08-27 13:46:24,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 13:46:24,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:46:24,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:46:24,801 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 13:46:24,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 13:46:25,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 13:46:25,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:46:25,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 13:46:25,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:46:25,277 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-27 13:46:25,338 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 13:46:25,385 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 13:46:25,428 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 13:46:25,845 INFO L322 Elim1Store]: treesize reduction 45, result has 53.6 percent of original size [2023-08-27 13:46:25,845 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 131 treesize of output 110 [2023-08-27 13:46:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 13:46:25,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:46:39,032 WARN L234 SmtUtils]: Spent 9.50s on a formula simplification. DAG size of input: 132 DAG size of output: 99 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 13:46:43,194 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:46:43,194 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 62 treesize of output 51 [2023-08-27 13:46:43,210 INFO L322 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-08-27 13:46:43,211 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 3382 treesize of output 3126 [2023-08-27 13:46:43,254 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:46:43,255 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 1550 treesize of output 1359 [2023-08-27 13:46:43,281 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:46:43,282 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 1342 treesize of output 943 [2023-08-27 13:46:43,308 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:46:43,308 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 926 treesize of output 839 [2023-08-27 13:46:43,964 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:46:43,965 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 125 treesize of output 89 [2023-08-27 13:46:44,006 INFO L322 Elim1Store]: treesize reduction 14, result has 72.0 percent of original size [2023-08-27 13:46:44,007 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54252 treesize of output 50063 [2023-08-27 13:46:44,134 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 13:46:44,150 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:46:44,151 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 3108 treesize of output 2341 [2023-08-27 13:46:44,207 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 13:46:44,224 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:46:44,225 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 2308 treesize of output 2141 [2023-08-27 13:46:44,286 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 13:46:44,303 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:46:44,304 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 2108 treesize of output 1741 [2023-08-27 13:46:48,798 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:46:48,798 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 62 treesize of output 51 [2023-08-27 13:46:48,815 INFO L322 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-08-27 13:46:48,816 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 6774 treesize of output 6246 [2023-08-27 13:46:48,875 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:46:48,876 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 1550 treesize of output 1359 [2023-08-27 13:46:48,908 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:46:48,908 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 1342 treesize of output 943 [2023-08-27 13:46:48,935 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:46:48,935 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 926 treesize of output 839 [2023-08-27 13:46:49,502 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:46:49,503 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 61 treesize of output 50 [2023-08-27 13:46:49,512 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-27 13:46:49,512 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 194 treesize of output 181 [2023-08-27 13:46:49,526 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 13:46:49,526 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 178 treesize of output 130 [2023-08-27 13:46:49,534 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 13:46:49,534 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 130 treesize of output 106 [2023-08-27 13:46:49,543 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 13:46:49,543 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 58 treesize of output 46 [2023-08-27 13:46:49,629 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:46:49,629 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 61 treesize of output 50 [2023-08-27 13:46:49,641 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-27 13:46:49,641 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 806 treesize of output 745 [2023-08-27 13:46:49,663 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 13:46:49,664 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 59 [2023-08-27 13:46:49,670 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 13:46:49,671 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2023-08-27 13:46:49,697 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 13:46:49,697 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 90 treesize of output 42 [2023-08-27 13:46:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 13:46:49,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448558659] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:46:49,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:46:49,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2023-08-27 13:46:49,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090991631] [2023-08-27 13:46:49,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:46:49,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-27 13:46:49,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:46:49,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-27 13:46:49,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=589, Unknown=13, NotChecked=0, Total=756 [2023-08-27 13:46:49,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 633 [2023-08-27 13:46:49,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 102 transitions, 895 flow. Second operand has 28 states, 28 states have (on average 150.67857142857142) internal successors, (4219), 28 states have internal predecessors, (4219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:49,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:46:49,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 633 [2023-08-27 13:46:49,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:46:53,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:46:56,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 13:47:09,896 INFO L124 PetriNetUnfolderBase]: 3653/6565 cut-off events. [2023-08-27 13:47:09,897 INFO L125 PetriNetUnfolderBase]: For 15069/15069 co-relation queries the response was YES. [2023-08-27 13:47:09,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20391 conditions, 6565 events. 3653/6565 cut-off events. For 15069/15069 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 45744 event pairs, 684 based on Foata normal form. 3/6567 useless extension candidates. Maximal degree in co-relation 20355. Up to 1226 conditions per place. [2023-08-27 13:47:09,918 INFO L140 encePairwiseOnDemand]: 618/633 looper letters, 109 selfloop transitions, 120 changer transitions 107/336 dead transitions. [2023-08-27 13:47:09,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 336 transitions, 2872 flow [2023-08-27 13:47:09,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-27 13:47:09,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-27 13:47:09,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4517 transitions. [2023-08-27 13:47:09,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2460641717056164 [2023-08-27 13:47:09,924 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4517 transitions. [2023-08-27 13:47:09,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4517 transitions. [2023-08-27 13:47:09,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:47:09,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4517 transitions. [2023-08-27 13:47:09,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 155.75862068965517) internal successors, (4517), 29 states have internal predecessors, (4517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:09,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 633.0) internal successors, (18990), 30 states have internal predecessors, (18990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:09,940 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 633.0) internal successors, (18990), 30 states have internal predecessors, (18990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:09,940 INFO L175 Difference]: Start difference. First operand has 100 places, 102 transitions, 895 flow. Second operand 29 states and 4517 transitions. [2023-08-27 13:47:09,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 336 transitions, 2872 flow [2023-08-27 13:47:09,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 336 transitions, 2644 flow, removed 24 selfloop flow, removed 8 redundant places. [2023-08-27 13:47:10,000 INFO L231 Difference]: Finished difference. Result has 127 places, 173 transitions, 1857 flow [2023-08-27 13:47:10,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1857, PETRI_PLACES=127, PETRI_TRANSITIONS=173} [2023-08-27 13:47:10,001 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 76 predicate places. [2023-08-27 13:47:10,001 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 173 transitions, 1857 flow [2023-08-27 13:47:10,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 150.67857142857142) internal successors, (4219), 28 states have internal predecessors, (4219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:10,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:47:10,002 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:47:10,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 13:47:10,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 13:47:10,205 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:47:10,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:47:10,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1604148473, now seen corresponding path program 3 times [2023-08-27 13:47:10,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:47:10,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795428483] [2023-08-27 13:47:10,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:47:10,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:47:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:47:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 13:47:10,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:47:10,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795428483] [2023-08-27 13:47:10,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795428483] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:47:10,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941259378] [2023-08-27 13:47:10,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 13:47:10,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:47:10,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:47:10,997 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 13:47:11,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 13:47:11,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 13:47:11,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:47:11,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 13:47:11,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:47:11,798 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 13:47:11,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:47:14,319 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:47:14,319 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 421 treesize of output 619 [2023-08-27 13:47:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 13:47:17,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941259378] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:47:17,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:47:17,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2023-08-27 13:47:17,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685469531] [2023-08-27 13:47:17,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:47:17,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 13:47:17,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:47:17,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 13:47:17,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2023-08-27 13:47:17,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 633 [2023-08-27 13:47:17,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 173 transitions, 1857 flow. Second operand has 22 states, 22 states have (on average 164.9090909090909) internal successors, (3628), 22 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:17,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:47:17,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 633 [2023-08-27 13:47:17,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:47:19,550 INFO L124 PetriNetUnfolderBase]: 4061/7309 cut-off events. [2023-08-27 13:47:19,550 INFO L125 PetriNetUnfolderBase]: For 18801/18801 co-relation queries the response was YES. [2023-08-27 13:47:19,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24401 conditions, 7309 events. 4061/7309 cut-off events. For 18801/18801 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 51953 event pairs, 1390 based on Foata normal form. 96/7404 useless extension candidates. Maximal degree in co-relation 24358. Up to 2474 conditions per place. [2023-08-27 13:47:19,576 INFO L140 encePairwiseOnDemand]: 624/633 looper letters, 181 selfloop transitions, 87 changer transitions 86/354 dead transitions. [2023-08-27 13:47:19,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 354 transitions, 3282 flow [2023-08-27 13:47:19,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 13:47:19,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 13:47:19,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3934 transitions. [2023-08-27 13:47:19,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2702108661309156 [2023-08-27 13:47:19,580 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3934 transitions. [2023-08-27 13:47:19,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3934 transitions. [2023-08-27 13:47:19,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:47:19,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3934 transitions. [2023-08-27 13:47:19,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 171.04347826086956) internal successors, (3934), 23 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:19,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 633.0) internal successors, (15192), 24 states have internal predecessors, (15192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:19,589 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 633.0) internal successors, (15192), 24 states have internal predecessors, (15192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:19,589 INFO L175 Difference]: Start difference. First operand has 127 places, 173 transitions, 1857 flow. Second operand 23 states and 3934 transitions. [2023-08-27 13:47:19,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 354 transitions, 3282 flow [2023-08-27 13:47:19,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 354 transitions, 3199 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-08-27 13:47:19,665 INFO L231 Difference]: Finished difference. Result has 148 places, 181 transitions, 2076 flow [2023-08-27 13:47:19,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=1795, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2076, PETRI_PLACES=148, PETRI_TRANSITIONS=181} [2023-08-27 13:47:19,665 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 97 predicate places. [2023-08-27 13:47:19,666 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 181 transitions, 2076 flow [2023-08-27 13:47:19,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 164.9090909090909) internal successors, (3628), 22 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:19,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:47:19,666 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:47:19,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 13:47:19,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:47:19,867 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:47:19,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:47:19,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1678191792, now seen corresponding path program 4 times [2023-08-27 13:47:19,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:47:19,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819755471] [2023-08-27 13:47:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:47:19,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:47:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:47:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 13:47:20,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:47:20,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819755471] [2023-08-27 13:47:20,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819755471] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:47:20,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784145995] [2023-08-27 13:47:20,274 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 13:47:20,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:47:20,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:47:20,277 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 13:47:20,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 13:47:20,476 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 13:47:20,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:47:20,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 13:47:20,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:47:20,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 13:47:20,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:47:21,378 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:47:21,379 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 247 treesize of output 253 [2023-08-27 13:47:21,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 13:47:21,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784145995] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:47:21,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:47:21,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-27 13:47:21,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381338734] [2023-08-27 13:47:21,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:47:21,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 13:47:21,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:47:21,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 13:47:21,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-08-27 13:47:21,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 633 [2023-08-27 13:47:21,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 181 transitions, 2076 flow. Second operand has 16 states, 16 states have (on average 181.5625) internal successors, (2905), 16 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:21,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:47:21,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 633 [2023-08-27 13:47:21,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:47:22,926 INFO L124 PetriNetUnfolderBase]: 3837/6967 cut-off events. [2023-08-27 13:47:22,926 INFO L125 PetriNetUnfolderBase]: For 21246/21246 co-relation queries the response was YES. [2023-08-27 13:47:22,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23774 conditions, 6967 events. 3837/6967 cut-off events. For 21246/21246 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 49715 event pairs, 2468 based on Foata normal form. 72/7039 useless extension candidates. Maximal degree in co-relation 23728. Up to 4465 conditions per place. [2023-08-27 13:47:22,953 INFO L140 encePairwiseOnDemand]: 626/633 looper letters, 169 selfloop transitions, 13 changer transitions 52/234 dead transitions. [2023-08-27 13:47:22,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 234 transitions, 2745 flow [2023-08-27 13:47:22,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 13:47:22,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 13:47:22,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1861 transitions. [2023-08-27 13:47:22,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2939968404423381 [2023-08-27 13:47:22,956 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1861 transitions. [2023-08-27 13:47:22,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1861 transitions. [2023-08-27 13:47:22,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:47:22,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1861 transitions. [2023-08-27 13:47:22,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 186.1) internal successors, (1861), 10 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:22,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 633.0) internal successors, (6963), 11 states have internal predecessors, (6963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:22,962 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 633.0) internal successors, (6963), 11 states have internal predecessors, (6963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:22,962 INFO L175 Difference]: Start difference. First operand has 148 places, 181 transitions, 2076 flow. Second operand 10 states and 1861 transitions. [2023-08-27 13:47:22,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 234 transitions, 2745 flow [2023-08-27 13:47:23,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 234 transitions, 2574 flow, removed 11 selfloop flow, removed 12 redundant places. [2023-08-27 13:47:23,040 INFO L231 Difference]: Finished difference. Result has 146 places, 153 transitions, 1558 flow [2023-08-27 13:47:23,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1558, PETRI_PLACES=146, PETRI_TRANSITIONS=153} [2023-08-27 13:47:23,040 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 95 predicate places. [2023-08-27 13:47:23,041 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 153 transitions, 1558 flow [2023-08-27 13:47:23,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 181.5625) internal successors, (2905), 16 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:23,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:47:23,041 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:47:23,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-27 13:47:23,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:47:23,242 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:47:23,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:47:23,242 INFO L85 PathProgramCache]: Analyzing trace with hash 2058421987, now seen corresponding path program 5 times [2023-08-27 13:47:23,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:47:23,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717053386] [2023-08-27 13:47:23,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:47:23,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:47:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:47:23,770 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 13:47:23,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:47:23,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717053386] [2023-08-27 13:47:23,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717053386] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:47:23,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863098752] [2023-08-27 13:47:23,770 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 13:47:23,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:47:23,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:47:23,773 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 13:47:23,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 13:47:23,982 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 13:47:23,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:47:23,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 13:47:23,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:47:24,289 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 13:47:24,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:47:24,682 INFO L322 Elim1Store]: treesize reduction 4, result has 91.5 percent of original size [2023-08-27 13:47:24,682 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 263 treesize of output 265 [2023-08-27 13:47:24,950 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 13:47:24,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863098752] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:47:24,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:47:24,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 13:47:24,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654382603] [2023-08-27 13:47:24,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:47:24,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 13:47:24,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:47:24,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 13:47:24,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-08-27 13:47:24,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 633 [2023-08-27 13:47:24,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 153 transitions, 1558 flow. Second operand has 19 states, 19 states have (on average 177.47368421052633) internal successors, (3372), 19 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:24,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:47:24,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 633 [2023-08-27 13:47:24,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:47:26,343 INFO L124 PetriNetUnfolderBase]: 3425/6052 cut-off events. [2023-08-27 13:47:26,343 INFO L125 PetriNetUnfolderBase]: For 19438/19438 co-relation queries the response was YES. [2023-08-27 13:47:26,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21016 conditions, 6052 events. 3425/6052 cut-off events. For 19438/19438 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 39318 event pairs, 1452 based on Foata normal form. 96/6148 useless extension candidates. Maximal degree in co-relation 20970. Up to 2096 conditions per place. [2023-08-27 13:47:26,362 INFO L140 encePairwiseOnDemand]: 624/633 looper letters, 206 selfloop transitions, 97 changer transitions 52/355 dead transitions. [2023-08-27 13:47:26,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 355 transitions, 3226 flow [2023-08-27 13:47:26,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 13:47:26,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 13:47:26,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4423 transitions. [2023-08-27 13:47:26,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2911400737230121 [2023-08-27 13:47:26,367 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4423 transitions. [2023-08-27 13:47:26,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4423 transitions. [2023-08-27 13:47:26,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:47:26,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4423 transitions. [2023-08-27 13:47:26,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 184.29166666666666) internal successors, (4423), 24 states have internal predecessors, (4423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:26,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 633.0) internal successors, (15825), 25 states have internal predecessors, (15825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:26,381 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 633.0) internal successors, (15825), 25 states have internal predecessors, (15825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:26,381 INFO L175 Difference]: Start difference. First operand has 146 places, 153 transitions, 1558 flow. Second operand 24 states and 4423 transitions. [2023-08-27 13:47:26,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 355 transitions, 3226 flow [2023-08-27 13:47:26,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 355 transitions, 3158 flow, removed 22 selfloop flow, removed 9 redundant places. [2023-08-27 13:47:26,434 INFO L231 Difference]: Finished difference. Result has 162 places, 171 transitions, 1926 flow [2023-08-27 13:47:26,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=1486, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1926, PETRI_PLACES=162, PETRI_TRANSITIONS=171} [2023-08-27 13:47:26,434 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 111 predicate places. [2023-08-27 13:47:26,435 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 171 transitions, 1926 flow [2023-08-27 13:47:26,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 177.47368421052633) internal successors, (3372), 19 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:47:26,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:47:26,435 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:47:26,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-27 13:47:26,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:47:26,636 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:47:26,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:47:26,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1336192598, now seen corresponding path program 6 times [2023-08-27 13:47:26,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:47:26,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206363019] [2023-08-27 13:47:26,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:47:26,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:47:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:47:28,767 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 13:47:28,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:47:28,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206363019] [2023-08-27 13:47:28,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206363019] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:47:28,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954954985] [2023-08-27 13:47:28,768 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 13:47:28,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:47:28,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:47:28,769 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 13:47:28,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-27 13:47:29,307 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 13:47:29,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:47:29,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 13:47:29,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:47:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 13:47:29,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:47:32,123 INFO L322 Elim1Store]: treesize reduction 122, result has 73.2 percent of original size [2023-08-27 13:47:32,124 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 952 treesize of output 1109 [2023-08-27 13:49:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-27 13:49:47,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954954985] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:49:47,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:49:47,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 5] total 22 [2023-08-27 13:49:47,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771646812] [2023-08-27 13:49:47,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:49:47,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 13:49:47,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:49:47,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 13:49:47,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2023-08-27 13:49:47,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 633 [2023-08-27 13:49:47,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 171 transitions, 1926 flow. Second operand has 24 states, 24 states have (on average 162.04166666666666) internal successors, (3889), 24 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:49:47,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:49:47,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 633 [2023-08-27 13:49:47,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:49:49,073 INFO L124 PetriNetUnfolderBase]: 4223/7509 cut-off events. [2023-08-27 13:49:49,073 INFO L125 PetriNetUnfolderBase]: For 28495/28495 co-relation queries the response was YES. [2023-08-27 13:49:49,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26906 conditions, 7509 events. 4223/7509 cut-off events. For 28495/28495 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 51982 event pairs, 1036 based on Foata normal form. 5/7514 useless extension candidates. Maximal degree in co-relation 26855. Up to 1745 conditions per place. [2023-08-27 13:49:49,101 INFO L140 encePairwiseOnDemand]: 622/633 looper letters, 78 selfloop transitions, 110 changer transitions 101/289 dead transitions. [2023-08-27 13:49:49,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 289 transitions, 3118 flow [2023-08-27 13:49:49,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-27 13:49:49,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-27 13:49:49,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3333 transitions. [2023-08-27 13:49:49,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2632701421800948 [2023-08-27 13:49:49,105 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3333 transitions. [2023-08-27 13:49:49,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3333 transitions. [2023-08-27 13:49:49,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:49:49,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3333 transitions. [2023-08-27 13:49:49,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 166.65) internal successors, (3333), 20 states have internal predecessors, (3333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:49:49,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 633.0) internal successors, (13293), 21 states have internal predecessors, (13293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:49:49,116 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 633.0) internal successors, (13293), 21 states have internal predecessors, (13293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:49:49,116 INFO L175 Difference]: Start difference. First operand has 162 places, 171 transitions, 1926 flow. Second operand 20 states and 3333 transitions. [2023-08-27 13:49:49,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 289 transitions, 3118 flow [2023-08-27 13:49:49,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 289 transitions, 2868 flow, removed 62 selfloop flow, removed 11 redundant places. [2023-08-27 13:49:49,208 INFO L231 Difference]: Finished difference. Result has 173 places, 163 transitions, 1893 flow [2023-08-27 13:49:49,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1893, PETRI_PLACES=173, PETRI_TRANSITIONS=163} [2023-08-27 13:49:49,208 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 122 predicate places. [2023-08-27 13:49:49,208 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 163 transitions, 1893 flow [2023-08-27 13:49:49,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 162.04166666666666) internal successors, (3889), 24 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:49:49,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:49:49,209 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:49:49,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-27 13:49:49,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:49:49,410 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 13:49:49,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:49:49,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1941648456, now seen corresponding path program 7 times [2023-08-27 13:49:49,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:49:49,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726076022] [2023-08-27 13:49:49,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:49:49,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:49:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:49:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:49:51,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:49:51,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726076022] [2023-08-27 13:49:51,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726076022] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:49:51,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034206722] [2023-08-27 13:49:51,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 13:49:51,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:49:51,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:49:51,181 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 13:49:51,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-27 13:49:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:49:51,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 13:49:51,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:49:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 13:49:52,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:50:13,946 WARN L234 SmtUtils]: Spent 7.52s on a formula simplification that was a NOOP. DAG size: 944 (called from [L 319] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-08-27 13:50:13,947 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 13:50:13,948 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 1046 treesize of output 4304 Received shutdown request... [2023-08-27 13:57:57,042 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-27 13:57:57,044 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (41 of 42 remaining) [2023-08-27 13:57:57,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-27 13:57:57,059 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 13:57:57,061 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 13:57:57,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:57:57,249 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. [2023-08-27 13:57:57,250 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 42 remaining) [2023-08-27 13:57:57,250 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 42 remaining) [2023-08-27 13:57:57,250 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 42 remaining) [2023-08-27 13:57:57,250 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 42 remaining) [2023-08-27 13:57:57,250 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 42 remaining) [2023-08-27 13:57:57,250 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 42 remaining) [2023-08-27 13:57:57,250 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 42 remaining) [2023-08-27 13:57:57,250 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 42 remaining) [2023-08-27 13:57:57,251 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 42 remaining) [2023-08-27 13:57:57,251 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 42 remaining) [2023-08-27 13:57:57,251 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 42 remaining) [2023-08-27 13:57:57,251 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 42 remaining) [2023-08-27 13:57:57,251 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 42 remaining) [2023-08-27 13:57:57,251 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 42 remaining) [2023-08-27 13:57:57,251 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 42 remaining) [2023-08-27 13:57:57,251 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 42 remaining) [2023-08-27 13:57:57,251 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 42 remaining) [2023-08-27 13:57:57,251 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 42 remaining) [2023-08-27 13:57:57,251 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 42 remaining) [2023-08-27 13:57:57,251 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 42 remaining) [2023-08-27 13:57:57,251 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 42 remaining) [2023-08-27 13:57:57,251 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 42 remaining) [2023-08-27 13:57:57,252 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 42 remaining) [2023-08-27 13:57:57,252 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 42 remaining) [2023-08-27 13:57:57,252 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 42 remaining) [2023-08-27 13:57:57,252 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 42 remaining) [2023-08-27 13:57:57,252 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 42 remaining) [2023-08-27 13:57:57,252 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 42 remaining) [2023-08-27 13:57:57,252 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 42 remaining) [2023-08-27 13:57:57,252 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 42 remaining) [2023-08-27 13:57:57,252 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 42 remaining) [2023-08-27 13:57:57,252 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 42 remaining) [2023-08-27 13:57:57,253 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 42 remaining) [2023-08-27 13:57:57,253 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 42 remaining) [2023-08-27 13:57:57,253 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 42 remaining) [2023-08-27 13:57:57,253 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 42 remaining) [2023-08-27 13:57:57,253 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 42 remaining) [2023-08-27 13:57:57,253 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 42 remaining) [2023-08-27 13:57:57,253 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 42 remaining) [2023-08-27 13:57:57,253 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 42 remaining) [2023-08-27 13:57:57,253 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 42 remaining) [2023-08-27 13:57:57,254 INFO L445 BasicCegarLoop]: Path program histogram: [7, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:57:57,257 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 13:57:57,258 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 13:57:57,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 01:57:57 BasicIcfg [2023-08-27 13:57:57,259 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 13:57:57,260 INFO L158 Benchmark]: Toolchain (without parser) took 812384.28ms. Allocated memory was 350.2MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 327.3MB in the beginning and 845.1MB in the end (delta: -517.8MB). Peak memory consumption was 868.7MB. Max. memory is 16.0GB. [2023-08-27 13:57:57,260 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 350.2MB. Free memory is still 327.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 13:57:57,260 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.96ms. Allocated memory is still 350.2MB. Free memory was 327.3MB in the beginning and 314.0MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 13:57:57,260 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.56ms. Allocated memory is still 350.2MB. Free memory was 314.0MB in the beginning and 311.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 13:57:57,260 INFO L158 Benchmark]: Boogie Preprocessor took 63.61ms. Allocated memory is still 350.2MB. Free memory was 311.3MB in the beginning and 309.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 13:57:57,261 INFO L158 Benchmark]: RCFGBuilder took 921.78ms. Allocated memory was 350.2MB in the beginning and 518.0MB in the end (delta: 167.8MB). Free memory was 309.2MB in the beginning and 487.0MB in the end (delta: -177.8MB). Peak memory consumption was 65.0MB. Max. memory is 16.0GB. [2023-08-27 13:57:57,261 INFO L158 Benchmark]: TraceAbstraction took 811006.06ms. Allocated memory was 518.0MB in the beginning and 1.4GB in the end (delta: 866.1MB). Free memory was 485.9MB in the beginning and 845.1MB in the end (delta: -359.2MB). Peak memory consumption was 860.9MB. Max. memory is 16.0GB. [2023-08-27 13:57:57,262 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 350.2MB. Free memory is still 327.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 318.96ms. Allocated memory is still 350.2MB. Free memory was 327.3MB in the beginning and 314.0MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 66.56ms. Allocated memory is still 350.2MB. Free memory was 314.0MB in the beginning and 311.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 63.61ms. Allocated memory is still 350.2MB. Free memory was 311.3MB in the beginning and 309.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 921.78ms. Allocated memory was 350.2MB in the beginning and 518.0MB in the end (delta: 167.8MB). Free memory was 309.2MB in the beginning and 487.0MB in the end (delta: -177.8MB). Peak memory consumption was 65.0MB. Max. memory is 16.0GB. * TraceAbstraction took 811006.06ms. Allocated memory was 518.0MB in the beginning and 1.4GB in the end (delta: 866.1MB). Free memory was 485.9MB in the beginning and 845.1MB in the end (delta: -359.2MB). Peak memory consumption was 860.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.4s, 268 PlacesBefore, 51 PlacesAfterwards, 285 TransitionsBefore, 47 TransitionsAfterwards, 4260 CoEnabledTransitionPairs, 7 FixpointIterations, 188 TrivialSequentialCompositions, 83 ConcurrentSequentialCompositions, 31 TrivialYvCompositions, 11 ConcurrentYvCompositions, 21 ChoiceCompositions, 334 TotalNumberOfCompositions, 4871 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4747, independent: 4737, independent conditional: 0, independent unconditional: 4737, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2046, independent: 2041, independent conditional: 0, independent unconditional: 2041, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4747, independent: 2696, independent conditional: 0, independent unconditional: 2696, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 2046, unknown conditional: 0, unknown unconditional: 2046] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 115, Positive conditional cache size: 0, Positive unconditional cache size: 115, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 154]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 155]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 15ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 329 locations, 42 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 810.9s, OverallIterations: 34, TraceHistogramMax: 4, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 91.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.6s, HoareTripleCheckerStatistics: 132 mSolverCounterUnknown, 3085 SdHoareTripleChecker+Valid, 55.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3085 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 54.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 289 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6363 IncrementalHoareTripleChecker+Invalid, 6784 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 289 mSolverCounterUnsat, 0 mSDtfsCounter, 6363 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 930 GetRequests, 563 SyntacticMatches, 7 SemanticMatches, 360 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1956 ImplicationChecksByTransitivity, 45.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2076occurred in iteration=30, InterpolantAutomatonStates: 267, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 209.7s InterpolantComputationTime, 930 NumberOfCodeBlocks, 925 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 1161 ConstructedInterpolants, 47 QuantifiedInterpolants, 26332 SizeOfPredicates, 570 NumberOfNonLiveVariables, 6516 ConjunctsInSsa, 277 ConjunctsInUnsatCore, 69 InterpolantComputations, 20 PerfectInterpolantSequences, 206/358 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown