/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/goblint-regression/06-symbeq_07-tricky_address2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:06:00,585 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:06:00,637 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 11:06:00,641 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:06:00,641 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:06:00,660 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:06:00,661 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:06:00,661 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:06:00,662 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:06:00,662 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:06:00,662 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:06:00,663 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:06:00,663 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:06:00,663 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:06:00,664 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:06:00,664 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:06:00,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:06:00,665 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:06:00,665 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:06:00,665 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:06:00,665 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:06:00,666 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:06:00,666 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:06:00,667 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:06:00,667 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:06:00,667 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:06:00,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:06:00,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:06:00,668 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:06:00,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:06:00,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:06:00,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:06:00,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:06:00,670 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:06:00,670 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:06:00,670 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:06:00,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:06:00,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:06:00,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:06:00,990 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:06:00,990 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:06:00,992 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i [2023-08-27 11:06:02,075 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:06:02,361 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:06:02,361 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i [2023-08-27 11:06:02,389 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad422a443/0ebf0ebabfbe425ea47c79ab10887147/FLAG28d8d03c1 [2023-08-27 11:06:02,403 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad422a443/0ebf0ebabfbe425ea47c79ab10887147 [2023-08-27 11:06:02,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:06:02,410 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:06:02,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:06:02,413 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:06:02,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:06:02,417 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:06:02" (1/1) ... [2023-08-27 11:06:02,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b222d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:06:02, skipping insertion in model container [2023-08-27 11:06:02,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:06:02" (1/1) ... [2023-08-27 11:06:02,470 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:06:02,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:06:02,920 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:06:02,949 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-27 11:06:02,951 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-27 11:06:02,972 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [741] [2023-08-27 11:06:02,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:06:03,035 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:06:03,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:06:03 WrapperNode [2023-08-27 11:06:03,037 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:06:03,038 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:06:03,039 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:06:03,039 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:06:03,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:06:03" (1/1) ... [2023-08-27 11:06:03,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:06:03" (1/1) ... [2023-08-27 11:06:03,105 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2023-08-27 11:06:03,106 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:06:03,107 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:06:03,107 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:06:03,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:06:03,115 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:06:03" (1/1) ... [2023-08-27 11:06:03,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:06:03" (1/1) ... [2023-08-27 11:06:03,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:06:03" (1/1) ... [2023-08-27 11:06:03,126 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:06:03" (1/1) ... [2023-08-27 11:06:03,138 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:06:03" (1/1) ... [2023-08-27 11:06:03,140 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:06:03" (1/1) ... [2023-08-27 11:06:03,141 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:06:03" (1/1) ... [2023-08-27 11:06:03,142 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:06:03" (1/1) ... [2023-08-27 11:06:03,144 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:06:03,145 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:06:03,145 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:06:03,145 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:06:03,146 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:06:03" (1/1) ... [2023-08-27 11:06:03,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:06:03,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:06:03,186 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 11:06:03,213 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 11:06:03,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:06:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:06:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 11:06:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:06:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:06:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:06:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 11:06:03,229 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 11:06:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:06:03,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:06:03,231 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 11:06:03,390 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:06:03,391 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:06:03,575 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:06:03,580 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:06:03,581 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-27 11:06:03,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:06:03 BoogieIcfgContainer [2023-08-27 11:06:03,583 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:06:03,584 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:06:03,584 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:06:03,587 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:06:03,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:06:02" (1/3) ... [2023-08-27 11:06:03,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce30312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:06:03, skipping insertion in model container [2023-08-27 11:06:03,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:06:03" (2/3) ... [2023-08-27 11:06:03,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce30312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:06:03, skipping insertion in model container [2023-08-27 11:06:03,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:06:03" (3/3) ... [2023-08-27 11:06:03,591 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2023-08-27 11:06:03,605 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:06:03,605 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-27 11:06:03,606 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:06:03,677 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 11:06:03,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 83 transitions, 171 flow [2023-08-27 11:06:03,764 INFO L124 PetriNetUnfolderBase]: 4/82 cut-off events. [2023-08-27 11:06:03,765 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:06:03,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 82 events. 4/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-08-27 11:06:03,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 83 transitions, 171 flow [2023-08-27 11:06:03,775 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 82 transitions, 167 flow [2023-08-27 11:06:03,780 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:06:03,791 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 82 transitions, 167 flow [2023-08-27 11:06:03,795 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 82 transitions, 167 flow [2023-08-27 11:06:03,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 82 transitions, 167 flow [2023-08-27 11:06:03,823 INFO L124 PetriNetUnfolderBase]: 4/82 cut-off events. [2023-08-27 11:06:03,823 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:06:03,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 82 events. 4/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-08-27 11:06:03,825 INFO L119 LiptonReduction]: Number of co-enabled transitions 988 [2023-08-27 11:06:05,810 INFO L134 LiptonReduction]: Checked pairs total: 1305 [2023-08-27 11:06:05,811 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-08-27 11:06:05,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:06:05,834 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;@207fcba2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:06:05,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-27 11:06:05,836 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:06:05,836 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 11:06:05,837 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:06:05,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:06:05,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 11:06:05,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:06:05,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:06:05,842 INFO L85 PathProgramCache]: Analyzing trace with hash 10153, now seen corresponding path program 1 times [2023-08-27 11:06:05,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:06:05,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685162661] [2023-08-27 11:06:05,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:06:05,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:06:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:06:06,003 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 11:06:06,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:06:06,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685162661] [2023-08-27 11:06:06,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685162661] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:06:06,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:06:06,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:06:06,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433049190] [2023-08-27 11:06:06,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:06:06,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:06:06,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:06:06,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:06:06,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:06:06,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 166 [2023-08-27 11:06:06,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:06,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:06:06,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 166 [2023-08-27 11:06:06,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:06:06,094 INFO L124 PetriNetUnfolderBase]: 37/88 cut-off events. [2023-08-27 11:06:06,094 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:06:06,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 88 events. 37/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 281 event pairs, 36 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 168. Up to 87 conditions per place. [2023-08-27 11:06:06,096 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 14 selfloop transitions, 2 changer transitions 0/16 dead transitions. [2023-08-27 11:06:06,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 16 transitions, 67 flow [2023-08-27 11:06:06,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:06:06,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:06:06,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-08-27 11:06:06,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463855421686747 [2023-08-27 11:06:06,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-08-27 11:06:06,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-08-27 11:06:06,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:06:06,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-08-27 11:06:06,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:06,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:06,118 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:06,120 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 39 flow. Second operand 3 states and 231 transitions. [2023-08-27 11:06:06,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 16 transitions, 67 flow [2023-08-27 11:06:06,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:06:06,123 INFO L231 Difference]: Finished difference. Result has 20 places, 16 transitions, 38 flow [2023-08-27 11:06:06,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=20, PETRI_TRANSITIONS=16} [2023-08-27 11:06:06,127 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-08-27 11:06:06,128 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 16 transitions, 38 flow [2023-08-27 11:06:06,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:06,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:06:06,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 11:06:06,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:06:06,128 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:06:06,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:06:06,129 INFO L85 PathProgramCache]: Analyzing trace with hash 303483523, now seen corresponding path program 1 times [2023-08-27 11:06:06,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:06:06,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394691271] [2023-08-27 11:06:06,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:06:06,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:06:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:06:06,193 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 11:06:06,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:06:06,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394691271] [2023-08-27 11:06:06,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394691271] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:06:06,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:06:06,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:06:06,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885559957] [2023-08-27 11:06:06,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:06:06,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:06:06,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:06:06,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:06:06,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:06:06,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 166 [2023-08-27 11:06:06,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:06,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:06:06,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 166 [2023-08-27 11:06:06,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:06:06,232 INFO L124 PetriNetUnfolderBase]: 37/89 cut-off events. [2023-08-27 11:06:06,232 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:06:06,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 89 events. 37/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 281 event pairs, 36 based on Foata normal form. 1/62 useless extension candidates. Maximal degree in co-relation 172. Up to 89 conditions per place. [2023-08-27 11:06:06,233 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 15 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2023-08-27 11:06:06,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 74 flow [2023-08-27 11:06:06,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:06:06,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:06:06,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-08-27 11:06:06,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463855421686747 [2023-08-27 11:06:06,235 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-08-27 11:06:06,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-08-27 11:06:06,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:06:06,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-08-27 11:06:06,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:06,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:06,239 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:06,239 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 38 flow. Second operand 3 states and 231 transitions. [2023-08-27 11:06:06,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 74 flow [2023-08-27 11:06:06,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 17 transitions, 70 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:06:06,240 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 46 flow [2023-08-27 11:06:06,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2023-08-27 11:06:06,241 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 0 predicate places. [2023-08-27 11:06:06,241 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 46 flow [2023-08-27 11:06:06,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:06,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:06:06,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 11:06:06,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:06:06,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:06:06,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:06:06,243 INFO L85 PathProgramCache]: Analyzing trace with hash 812077823, now seen corresponding path program 1 times [2023-08-27 11:06:06,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:06:06,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42389820] [2023-08-27 11:06:06,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:06:06,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:06:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:06:06,329 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 11:06:06,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:06:06,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42389820] [2023-08-27 11:06:06,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42389820] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:06:06,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209148360] [2023-08-27 11:06:06,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:06:06,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:06:06,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:06:06,337 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 11:06:06,387 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 11:06:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:06:06,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:06:06,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:06:06,490 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 11:06:06,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:06:06,505 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 11:06:06,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209148360] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:06:06,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:06:06,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:06:06,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971919248] [2023-08-27 11:06:06,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:06:06,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:06:06,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:06:06,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:06:06,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:06:06,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 166 [2023-08-27 11:06:06,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:06,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:06:06,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 166 [2023-08-27 11:06:06,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:06:06,576 INFO L124 PetriNetUnfolderBase]: 37/92 cut-off events. [2023-08-27 11:06:06,577 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:06:06,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 92 events. 37/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 281 event pairs, 36 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 187. Up to 89 conditions per place. [2023-08-27 11:06:06,578 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 15 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2023-08-27 11:06:06,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 20 transitions, 98 flow [2023-08-27 11:06:06,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:06:06,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:06:06,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 449 transitions. [2023-08-27 11:06:06,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4508032128514056 [2023-08-27 11:06:06,584 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 449 transitions. [2023-08-27 11:06:06,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 449 transitions. [2023-08-27 11:06:06,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:06:06,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 449 transitions. [2023-08-27 11:06:06,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.83333333333333) internal successors, (449), 6 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:06,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:06,591 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:06,591 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 6 states and 449 transitions. [2023-08-27 11:06:06,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 20 transitions, 98 flow [2023-08-27 11:06:06,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 20 transitions, 94 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 11:06:06,593 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 78 flow [2023-08-27 11:06:06,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-08-27 11:06:06,594 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 7 predicate places. [2023-08-27 11:06:06,594 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 78 flow [2023-08-27 11:06:06,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:06,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:06:06,595 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-27 11:06:06,603 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 11:06:06,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:06:06,796 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:06:06,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:06:06,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1714620803, now seen corresponding path program 2 times [2023-08-27 11:06:06,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:06:06,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123668285] [2023-08-27 11:06:06,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:06:06,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:06:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:06:06,971 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 11:06:06,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:06:06,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123668285] [2023-08-27 11:06:06,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123668285] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:06:06,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742200032] [2023-08-27 11:06:06,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:06:06,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:06:06,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:06:06,974 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 11:06:07,001 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 11:06:07,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 11:06:07,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:06:07,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 11:06:07,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:06:07,091 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 7 treesize of output 6 [2023-08-27 11:06:07,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 11:06:07,141 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-27 11:06:07,161 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 11:06:07,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:06:07,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742200032] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:06:07,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:06:07,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-08-27 11:06:07,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830877576] [2023-08-27 11:06:07,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:06:07,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:06:07,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:06:07,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:06:07,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-27 11:06:07,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2023-08-27 11:06:07,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:07,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:06:07,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2023-08-27 11:06:07,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:06:07,212 INFO L124 PetriNetUnfolderBase]: 21/60 cut-off events. [2023-08-27 11:06:07,213 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 11:06:07,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 60 events. 21/60 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 142 event pairs, 10 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 114. Up to 41 conditions per place. [2023-08-27 11:06:07,213 INFO L140 encePairwiseOnDemand]: 159/166 looper letters, 19 selfloop transitions, 3 changer transitions 4/26 dead transitions. [2023-08-27 11:06:07,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 142 flow [2023-08-27 11:06:07,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:06:07,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:06:07,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-08-27 11:06:07,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497991967871486 [2023-08-27 11:06:07,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-08-27 11:06:07,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-08-27 11:06:07,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:06:07,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-08-27 11:06:07,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:07,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:07,218 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:07,218 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 78 flow. Second operand 3 states and 224 transitions. [2023-08-27 11:06:07,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 142 flow [2023-08-27 11:06:07,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 128 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-27 11:06:07,220 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 81 flow [2023-08-27 11:06:07,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-08-27 11:06:07,221 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2023-08-27 11:06:07,221 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 81 flow [2023-08-27 11:06:07,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:07,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:06:07,222 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:06:07,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 11:06:07,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-27 11:06:07,427 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:06:07,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:06:07,428 INFO L85 PathProgramCache]: Analyzing trace with hash 222627691, now seen corresponding path program 1 times [2023-08-27 11:06:07,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:06:07,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144188890] [2023-08-27 11:06:07,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:06:07,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:06:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:06:07,531 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 11:06:07,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:06:07,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144188890] [2023-08-27 11:06:07,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144188890] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:06:07,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121946263] [2023-08-27 11:06:07,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:06:07,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:06:07,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:06:07,535 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 11:06:07,540 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 11:06:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:06:07,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 11:06:07,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:06:07,650 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 11:06:07,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:06:07,697 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 11:06:07,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121946263] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:06:07,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:06:07,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 11:06:07,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469498847] [2023-08-27 11:06:07,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:06:07,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 11:06:07,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:06:07,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 11:06:07,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 11:06:07,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 166 [2023-08-27 11:06:07,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 81 flow. Second operand has 13 states, 13 states have (on average 72.53846153846153) internal successors, (943), 13 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:07,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:06:07,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 166 [2023-08-27 11:06:07,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:06:07,752 INFO L124 PetriNetUnfolderBase]: 17/58 cut-off events. [2023-08-27 11:06:07,753 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-27 11:06:07,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 58 events. 17/58 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 120 event pairs, 16 based on Foata normal form. 6/60 useless extension candidates. Maximal degree in co-relation 118. Up to 49 conditions per place. [2023-08-27 11:06:07,754 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 15 selfloop transitions, 11 changer transitions 0/26 dead transitions. [2023-08-27 11:06:07,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 26 transitions, 169 flow [2023-08-27 11:06:07,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:06:07,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:06:07,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 884 transitions. [2023-08-27 11:06:07,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44377510040160645 [2023-08-27 11:06:07,757 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 884 transitions. [2023-08-27 11:06:07,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 884 transitions. [2023-08-27 11:06:07,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:06:07,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 884 transitions. [2023-08-27 11:06:07,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 73.66666666666667) internal successors, (884), 12 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:07,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:07,764 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:07,764 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 81 flow. Second operand 12 states and 884 transitions. [2023-08-27 11:06:07,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 26 transitions, 169 flow [2023-08-27 11:06:07,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 26 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:06:07,766 INFO L231 Difference]: Finished difference. Result has 46 places, 26 transitions, 162 flow [2023-08-27 11:06:07,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=162, PETRI_PLACES=46, PETRI_TRANSITIONS=26} [2023-08-27 11:06:07,767 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2023-08-27 11:06:07,767 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 26 transitions, 162 flow [2023-08-27 11:06:07,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 72.53846153846153) internal successors, (943), 13 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:07,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:06:07,768 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:06:07,775 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 11:06:07,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:06:07,973 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:06:07,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:06:07,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1098503957, now seen corresponding path program 2 times [2023-08-27 11:06:07,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:06:07,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36690882] [2023-08-27 11:06:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:06:07,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:06:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:06:08,411 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:06:08,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:06:08,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36690882] [2023-08-27 11:06:08,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36690882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:06:08,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:06:08,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:06:08,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927518002] [2023-08-27 11:06:08,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:06:08,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:06:08,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:06:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:06:08,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:06:08,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 166 [2023-08-27 11:06:08,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 26 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 7 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:08,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:06:08,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 166 [2023-08-27 11:06:08,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:06:08,509 INFO L124 PetriNetUnfolderBase]: 16/55 cut-off events. [2023-08-27 11:06:08,509 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-08-27 11:06:08,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 55 events. 16/55 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 111 event pairs, 4 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 110. Up to 21 conditions per place. [2023-08-27 11:06:08,510 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 25 selfloop transitions, 5 changer transitions 5/35 dead transitions. [2023-08-27 11:06:08,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 35 transitions, 252 flow [2023-08-27 11:06:08,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:06:08,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:06:08,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 357 transitions. [2023-08-27 11:06:08,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35843373493975905 [2023-08-27 11:06:08,512 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 357 transitions. [2023-08-27 11:06:08,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 357 transitions. [2023-08-27 11:06:08,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:06:08,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 357 transitions. [2023-08-27 11:06:08,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.5) internal successors, (357), 6 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:08,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:08,516 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:08,516 INFO L175 Difference]: Start difference. First operand has 46 places, 26 transitions, 162 flow. Second operand 6 states and 357 transitions. [2023-08-27 11:06:08,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 35 transitions, 252 flow [2023-08-27 11:06:08,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 35 transitions, 204 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-27 11:06:08,522 INFO L231 Difference]: Finished difference. Result has 45 places, 25 transitions, 120 flow [2023-08-27 11:06:08,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=45, PETRI_TRANSITIONS=25} [2023-08-27 11:06:08,524 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 24 predicate places. [2023-08-27 11:06:08,524 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 25 transitions, 120 flow [2023-08-27 11:06:08,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 7 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:08,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:06:08,525 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:06:08,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 11:06:08,525 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:06:08,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:06:08,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1098503956, now seen corresponding path program 1 times [2023-08-27 11:06:08,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:06:08,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029225734] [2023-08-27 11:06:08,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:06:08,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:06:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:06:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:06:08,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:06:08,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029225734] [2023-08-27 11:06:08,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029225734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:06:08,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:06:08,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:06:08,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252609597] [2023-08-27 11:06:08,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:06:08,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:06:08,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:06:08,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:06:08,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:06:08,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 166 [2023-08-27 11:06:08,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 25 transitions, 120 flow. Second operand has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 7 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:08,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:06:08,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 166 [2023-08-27 11:06:08,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:06:08,873 INFO L124 PetriNetUnfolderBase]: 13/48 cut-off events. [2023-08-27 11:06:08,874 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-08-27 11:06:08,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 48 events. 13/48 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 81 event pairs, 4 based on Foata normal form. 2/48 useless extension candidates. Maximal degree in co-relation 104. Up to 21 conditions per place. [2023-08-27 11:06:08,874 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 20 selfloop transitions, 2 changer transitions 9/31 dead transitions. [2023-08-27 11:06:08,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 31 transitions, 192 flow [2023-08-27 11:06:08,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:06:08,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:06:08,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 353 transitions. [2023-08-27 11:06:08,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35441767068273095 [2023-08-27 11:06:08,876 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 353 transitions. [2023-08-27 11:06:08,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 353 transitions. [2023-08-27 11:06:08,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:06:08,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 353 transitions. [2023-08-27 11:06:08,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 58.833333333333336) internal successors, (353), 6 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:08,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:08,879 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:08,880 INFO L175 Difference]: Start difference. First operand has 45 places, 25 transitions, 120 flow. Second operand 6 states and 353 transitions. [2023-08-27 11:06:08,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 31 transitions, 192 flow [2023-08-27 11:06:08,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 31 transitions, 183 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 11:06:08,881 INFO L231 Difference]: Finished difference. Result has 45 places, 21 transitions, 102 flow [2023-08-27 11:06:08,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=45, PETRI_TRANSITIONS=21} [2023-08-27 11:06:08,882 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 24 predicate places. [2023-08-27 11:06:08,882 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 21 transitions, 102 flow [2023-08-27 11:06:08,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 7 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:08,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:06:08,883 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:06:08,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 11:06:08,883 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:06:08,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:06:08,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1098495740, now seen corresponding path program 1 times [2023-08-27 11:06:08,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:06:08,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753051113] [2023-08-27 11:06:08,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:06:08,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:06:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:06:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:06:09,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:06:09,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753051113] [2023-08-27 11:06:09,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753051113] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:06:09,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:06:09,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:06:09,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295587942] [2023-08-27 11:06:09,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:06:09,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:06:09,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:06:09,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:06:09,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:06:09,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 166 [2023-08-27 11:06:09,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 21 transitions, 102 flow. Second operand has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 7 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:09,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:06:09,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 166 [2023-08-27 11:06:09,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:06:09,280 INFO L124 PetriNetUnfolderBase]: 8/36 cut-off events. [2023-08-27 11:06:09,281 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-08-27 11:06:09,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 36 events. 8/36 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 2 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 70. Up to 18 conditions per place. [2023-08-27 11:06:09,281 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 20 selfloop transitions, 5 changer transitions 0/25 dead transitions. [2023-08-27 11:06:09,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 25 transitions, 162 flow [2023-08-27 11:06:09,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:06:09,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:06:09,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 291 transitions. [2023-08-27 11:06:09,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506024096385542 [2023-08-27 11:06:09,283 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 291 transitions. [2023-08-27 11:06:09,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 291 transitions. [2023-08-27 11:06:09,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:06:09,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 291 transitions. [2023-08-27 11:06:09,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 58.2) internal successors, (291), 5 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:09,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:09,287 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:09,287 INFO L175 Difference]: Start difference. First operand has 45 places, 21 transitions, 102 flow. Second operand 5 states and 291 transitions. [2023-08-27 11:06:09,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 25 transitions, 162 flow [2023-08-27 11:06:09,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 25 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:06:09,290 INFO L231 Difference]: Finished difference. Result has 41 places, 23 transitions, 124 flow [2023-08-27 11:06:09,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2023-08-27 11:06:09,292 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 20 predicate places. [2023-08-27 11:06:09,292 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 124 flow [2023-08-27 11:06:09,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 7 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:09,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:06:09,293 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:06:09,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 11:06:09,293 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:06:09,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:06:09,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1135301393, now seen corresponding path program 1 times [2023-08-27 11:06:09,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:06:09,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790504378] [2023-08-27 11:06:09,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:06:09,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:06:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:06:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:06:09,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:06:09,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790504378] [2023-08-27 11:06:09,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790504378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:06:09,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:06:09,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:06:09,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251305885] [2023-08-27 11:06:09,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:06:09,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:06:09,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:06:09,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:06:09,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:06:09,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 166 [2023-08-27 11:06:09,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 58.285714285714285) internal successors, (408), 7 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:09,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:06:09,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 166 [2023-08-27 11:06:09,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:06:09,654 INFO L124 PetriNetUnfolderBase]: 5/31 cut-off events. [2023-08-27 11:06:09,654 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-08-27 11:06:09,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 31 events. 5/31 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 3 based on Foata normal form. 4/35 useless extension candidates. Maximal degree in co-relation 81. Up to 18 conditions per place. [2023-08-27 11:06:09,656 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 17 selfloop transitions, 3 changer transitions 2/22 dead transitions. [2023-08-27 11:06:09,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 22 transitions, 158 flow [2023-08-27 11:06:09,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:06:09,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:06:09,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 298 transitions. [2023-08-27 11:06:09,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35903614457831323 [2023-08-27 11:06:09,658 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 298 transitions. [2023-08-27 11:06:09,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 298 transitions. [2023-08-27 11:06:09,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:06:09,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 298 transitions. [2023-08-27 11:06:09,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:09,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:09,660 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:09,660 INFO L175 Difference]: Start difference. First operand has 41 places, 23 transitions, 124 flow. Second operand 5 states and 298 transitions. [2023-08-27 11:06:09,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 22 transitions, 158 flow [2023-08-27 11:06:09,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 22 transitions, 150 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 11:06:09,662 INFO L231 Difference]: Finished difference. Result has 40 places, 20 transitions, 104 flow [2023-08-27 11:06:09,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=104, PETRI_PLACES=40, PETRI_TRANSITIONS=20} [2023-08-27 11:06:09,663 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 19 predicate places. [2023-08-27 11:06:09,663 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 20 transitions, 104 flow [2023-08-27 11:06:09,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 58.285714285714285) internal successors, (408), 7 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:09,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:06:09,664 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:06:09,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 11:06:09,664 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-27 11:06:09,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:06:09,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1135301420, now seen corresponding path program 2 times [2023-08-27 11:06:09,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:06:09,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393176406] [2023-08-27 11:06:09,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:06:09,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:06:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:06:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:06:09,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:06:09,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393176406] [2023-08-27 11:06:09,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393176406] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:06:09,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:06:09,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:06:09,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841140492] [2023-08-27 11:06:09,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:06:09,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:06:09,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:06:09,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:06:09,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:06:09,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 166 [2023-08-27 11:06:09,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 20 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 58.285714285714285) internal successors, (408), 7 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:09,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:06:09,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 166 [2023-08-27 11:06:09,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:06:09,944 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2023-08-27 11:06:09,944 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-08-27 11:06:09,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 21 events. 2/21 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 1 based on Foata normal form. 2/23 useless extension candidates. Maximal degree in co-relation 59. Up to 15 conditions per place. [2023-08-27 11:06:09,944 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-08-27 11:06:09,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 19 transitions, 136 flow [2023-08-27 11:06:09,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:06:09,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:06:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 295 transitions. [2023-08-27 11:06:09,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35542168674698793 [2023-08-27 11:06:09,946 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 295 transitions. [2023-08-27 11:06:09,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 295 transitions. [2023-08-27 11:06:09,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:06:09,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 295 transitions. [2023-08-27 11:06:09,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:09,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:09,949 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:09,949 INFO L175 Difference]: Start difference. First operand has 40 places, 20 transitions, 104 flow. Second operand 5 states and 295 transitions. [2023-08-27 11:06:09,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 19 transitions, 136 flow [2023-08-27 11:06:09,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 19 transitions, 125 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 11:06:09,950 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-27 11:06:09,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-08-27 11:06:09,951 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 16 predicate places. [2023-08-27 11:06:09,951 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-27 11:06:09,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 58.285714285714285) internal successors, (408), 7 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:06:09,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2023-08-27 11:06:09,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-08-27 11:06:09,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-08-27 11:06:09,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-08-27 11:06:09,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-08-27 11:06:09,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-08-27 11:06:09,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2023-08-27 11:06:09,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-08-27 11:06:09,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-08-27 11:06:09,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 11:06:09,955 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1] [2023-08-27 11:06:09,958 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 11:06:09,959 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 11:06:09,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:06:09 BasicIcfg [2023-08-27 11:06:09,961 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 11:06:09,962 INFO L158 Benchmark]: Toolchain (without parser) took 7551.54ms. Allocated memory was 371.2MB in the beginning and 446.7MB in the end (delta: 75.5MB). Free memory was 345.5MB in the beginning and 264.6MB in the end (delta: 80.9MB). Peak memory consumption was 158.0MB. Max. memory is 16.0GB. [2023-08-27 11:06:09,962 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 371.2MB. Free memory was 348.9MB in the beginning and 348.8MB in the end (delta: 86.1kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 11:06:09,962 INFO L158 Benchmark]: CACSL2BoogieTranslator took 625.07ms. Allocated memory is still 371.2MB. Free memory was 344.9MB in the beginning and 317.6MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-27 11:06:09,962 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.56ms. Allocated memory is still 371.2MB. Free memory was 317.6MB in the beginning and 315.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:06:09,962 INFO L158 Benchmark]: Boogie Preprocessor took 37.53ms. Allocated memory is still 371.2MB. Free memory was 315.0MB in the beginning and 313.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:06:09,963 INFO L158 Benchmark]: RCFGBuilder took 437.74ms. Allocated memory is still 371.2MB. Free memory was 313.5MB in the beginning and 299.4MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 11:06:09,963 INFO L158 Benchmark]: TraceAbstraction took 6376.78ms. Allocated memory was 371.2MB in the beginning and 446.7MB in the end (delta: 75.5MB). Free memory was 298.8MB in the beginning and 264.6MB in the end (delta: 34.2MB). Peak memory consumption was 111.9MB. Max. memory is 16.0GB. [2023-08-27 11:06:09,964 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 371.2MB. Free memory was 348.9MB in the beginning and 348.8MB in the end (delta: 86.1kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 625.07ms. Allocated memory is still 371.2MB. Free memory was 344.9MB in the beginning and 317.6MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 67.56ms. Allocated memory is still 371.2MB. Free memory was 317.6MB in the beginning and 315.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 37.53ms. Allocated memory is still 371.2MB. Free memory was 315.0MB in the beginning and 313.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 437.74ms. Allocated memory is still 371.2MB. Free memory was 313.5MB in the beginning and 299.4MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 6376.78ms. Allocated memory was 371.2MB in the beginning and 446.7MB in the end (delta: 75.5MB). Free memory was 298.8MB in the beginning and 264.6MB in the end (delta: 34.2MB). Peak memory consumption was 111.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] - GenericResultAtLocation [Line: 741]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [741] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 82 PlacesBefore, 21 PlacesAfterwards, 82 TransitionsBefore, 18 TransitionsAfterwards, 988 CoEnabledTransitionPairs, 5 FixpointIterations, 31 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 2 ConcurrentYvCompositions, 3 ChoiceCompositions, 83 TotalNumberOfCompositions, 1305 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 967, independent: 900, independent conditional: 0, independent unconditional: 900, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 552, independent: 532, independent conditional: 0, independent unconditional: 532, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 967, independent: 368, independent conditional: 0, independent unconditional: 368, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 552, unknown conditional: 0, unknown unconditional: 552] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 107 locations, 9 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: 6.2s, OverallIterations: 10, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 62 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 62 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 422 IncrementalHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 0 mSDtfsCounter, 422 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=5, InterpolantAutomatonStates: 54, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 151 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 1366 SizeOfPredicates, 2 NumberOfNonLiveVariables, 295 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 285/328 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 - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 11:06:09,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...