/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:13:07,526 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:13:07,578 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 [2023-08-26 22:13:07,581 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:13:07,581 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:13:07,609 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:13:07,610 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:13:07,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:13:07,611 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:13:07,614 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:13:07,614 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:13:07,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:13:07,615 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:13:07,616 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:13:07,616 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:13:07,616 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:13:07,616 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:13:07,616 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:13:07,616 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:13:07,617 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:13:07,617 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:13:07,617 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:13:07,617 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:13:07,618 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:13:07,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:13:07,618 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:13:07,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:13:07,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:13:07,619 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:13:07,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:13:07,620 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:13:07,620 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:13:07,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:13:07,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:13:07,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:13:07,620 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:13:07,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:13:07,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:13:07,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:13:07,929 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:13:07,929 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:13:07,930 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i [2023-08-26 22:13:09,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:13:09,211 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:13:09,212 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i [2023-08-26 22:13:09,227 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76ffaedd6/746d0d7429a54d16b5c6f6c13770ac57/FLAG15ff4a300 [2023-08-26 22:13:09,240 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76ffaedd6/746d0d7429a54d16b5c6f6c13770ac57 [2023-08-26 22:13:09,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:13:09,243 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:13:09,244 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:13:09,244 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:13:09,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:13:09,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:13:09" (1/1) ... [2023-08-26 22:13:09,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187ebca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:13:09, skipping insertion in model container [2023-08-26 22:13:09,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:13:09" (1/1) ... [2023-08-26 22:13:09,289 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:13:09,531 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:13:09,542 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:13:09,552 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-26 22:13:09,554 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-26 22:13:09,560 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [741] [2023-08-26 22:13:09,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:13:09,604 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:13:09,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:13:09 WrapperNode [2023-08-26 22:13:09,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:13:09,605 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:13:09,606 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:13:09,606 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:13:09,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:13:09" (1/1) ... [2023-08-26 22:13:09,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:13:09" (1/1) ... [2023-08-26 22:13:09,635 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2023-08-26 22:13:09,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:13:09,636 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:13:09,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:13:09,636 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:13:09,643 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:13:09" (1/1) ... [2023-08-26 22:13:09,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:13:09" (1/1) ... [2023-08-26 22:13:09,645 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:13:09" (1/1) ... [2023-08-26 22:13:09,645 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:13:09" (1/1) ... [2023-08-26 22:13:09,649 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:13:09" (1/1) ... [2023-08-26 22:13:09,651 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:13:09" (1/1) ... [2023-08-26 22:13:09,652 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:13:09" (1/1) ... [2023-08-26 22:13:09,653 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:13:09" (1/1) ... [2023-08-26 22:13:09,654 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:13:09,655 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:13:09,655 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:13:09,655 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:13:09,656 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:13:09" (1/1) ... [2023-08-26 22:13:09,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:13:09,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:13:09,686 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) [2023-08-26 22:13:09,702 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 [2023-08-26 22:13:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:13:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:13:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:13:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:13:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:13:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:13:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:13:09,713 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:13:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:13:09,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:13:09,714 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 22:13:09,793 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:13:09,795 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:13:09,894 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:13:09,898 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:13:09,898 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-26 22:13:09,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:13:09 BoogieIcfgContainer [2023-08-26 22:13:09,900 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:13:09,901 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:13:09,901 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:13:09,903 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:13:09,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:13:09" (1/3) ... [2023-08-26 22:13:09,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26118719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:13:09, skipping insertion in model container [2023-08-26 22:13:09,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:13:09" (2/3) ... [2023-08-26 22:13:09,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26118719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:13:09, skipping insertion in model container [2023-08-26 22:13:09,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:13:09" (3/3) ... [2023-08-26 22:13:09,905 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2023-08-26 22:13:09,915 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:13:09,915 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-26 22:13:09,915 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:13:09,946 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 22:13:09,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 83 transitions, 171 flow [2023-08-26 22:13:09,990 INFO L124 PetriNetUnfolderBase]: 4/82 cut-off events. [2023-08-26 22:13:09,990 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:13:09,992 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. [2023-08-26 22:13:09,992 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 83 transitions, 171 flow [2023-08-26 22:13:09,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 82 transitions, 167 flow [2023-08-26 22:13:09,997 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:13:10,003 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 82 transitions, 167 flow [2023-08-26 22:13:10,005 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 82 transitions, 167 flow [2023-08-26 22:13:10,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 82 transitions, 167 flow [2023-08-26 22:13:10,018 INFO L124 PetriNetUnfolderBase]: 4/82 cut-off events. [2023-08-26 22:13:10,018 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:13:10,019 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. [2023-08-26 22:13:10,019 INFO L119 LiptonReduction]: Number of co-enabled transitions 988 [2023-08-26 22:13:11,634 INFO L134 LiptonReduction]: Checked pairs total: 1305 [2023-08-26 22:13:11,635 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-08-26 22:13:11,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:13:11,648 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;@271400de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:13:11,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-26 22:13:11,653 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:13:11,653 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-26 22:13:11,653 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:13:11,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:13:11,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 22:13:11,654 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)] === [2023-08-26 22:13:11,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:13:11,658 INFO L85 PathProgramCache]: Analyzing trace with hash 10153, now seen corresponding path program 1 times [2023-08-26 22:13:11,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:13:11,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760214452] [2023-08-26 22:13:11,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:13:11,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:13:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:13:11,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:13:11,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:13:11,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760214452] [2023-08-26 22:13:11,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760214452] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:13:11,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:13:11,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:13:11,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146967876] [2023-08-26 22:13:11,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:13:11,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:13:11,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:13:11,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:13:11,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:13:11,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 166 [2023-08-26 22:13:11,820 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) [2023-08-26 22:13:11,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:13:11,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 166 [2023-08-26 22:13:11,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:13:11,856 INFO L124 PetriNetUnfolderBase]: 37/88 cut-off events. [2023-08-26 22:13:11,857 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:13:11,857 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. [2023-08-26 22:13:11,858 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 14 selfloop transitions, 2 changer transitions 0/16 dead transitions. [2023-08-26 22:13:11,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 16 transitions, 67 flow [2023-08-26 22:13:11,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:13:11,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:13:11,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-08-26 22:13:11,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463855421686747 [2023-08-26 22:13:11,868 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-08-26 22:13:11,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-08-26 22:13:11,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:13:11,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-08-26 22:13:11,872 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) [2023-08-26 22:13:11,876 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) [2023-08-26 22:13:11,876 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) [2023-08-26 22:13:11,877 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 39 flow. Second operand 3 states and 231 transitions. [2023-08-26 22:13:11,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 16 transitions, 67 flow [2023-08-26 22:13:11,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:13:11,880 INFO L231 Difference]: Finished difference. Result has 20 places, 16 transitions, 38 flow [2023-08-26 22:13:11,881 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} [2023-08-26 22:13:11,884 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-08-26 22:13:11,884 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 16 transitions, 38 flow [2023-08-26 22:13:11,884 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) [2023-08-26 22:13:11,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:13:11,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:13:11,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:13:11,885 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)] === [2023-08-26 22:13:11,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:13:11,885 INFO L85 PathProgramCache]: Analyzing trace with hash 303483523, now seen corresponding path program 1 times [2023-08-26 22:13:11,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:13:11,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645489804] [2023-08-26 22:13:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:13:11,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:13:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:13:11,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:13:11,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:13:11,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645489804] [2023-08-26 22:13:11,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645489804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:13:11,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:13:11,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:13:11,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145857177] [2023-08-26 22:13:11,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:13:11,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:13:11,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:13:11,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:13:11,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:13:11,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 166 [2023-08-26 22:13:11,936 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) [2023-08-26 22:13:11,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:13:11,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 166 [2023-08-26 22:13:11,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:13:11,965 INFO L124 PetriNetUnfolderBase]: 37/89 cut-off events. [2023-08-26 22:13:11,966 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:13:11,966 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. [2023-08-26 22:13:11,966 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 15 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2023-08-26 22:13:11,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 74 flow [2023-08-26 22:13:11,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:13:11,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:13:11,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-08-26 22:13:11,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463855421686747 [2023-08-26 22:13:11,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-08-26 22:13:11,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-08-26 22:13:11,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:13:11,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-08-26 22:13:11,970 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) [2023-08-26 22:13:11,971 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) [2023-08-26 22:13:11,971 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) [2023-08-26 22:13:11,971 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 38 flow. Second operand 3 states and 231 transitions. [2023-08-26 22:13:11,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 74 flow [2023-08-26 22:13:11,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 17 transitions, 70 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:13:11,972 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 46 flow [2023-08-26 22:13:11,972 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} [2023-08-26 22:13:11,973 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 0 predicate places. [2023-08-26 22:13:11,973 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 46 flow [2023-08-26 22:13:11,973 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) [2023-08-26 22:13:11,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:13:11,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:13:11,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:13:11,974 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)] === [2023-08-26 22:13:11,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:13:11,974 INFO L85 PathProgramCache]: Analyzing trace with hash 812077823, now seen corresponding path program 1 times [2023-08-26 22:13:11,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:13:11,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135314695] [2023-08-26 22:13:11,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:13:11,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:13:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:13:12,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:13:12,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:13:12,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135314695] [2023-08-26 22:13:12,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135314695] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:13:12,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196534634] [2023-08-26 22:13:12,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:13:12,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:13:12,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:13:12,077 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) [2023-08-26 22:13:12,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 22:13:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:13:12,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:13:12,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:13:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:13:12,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:13:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:13:12,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196534634] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:13:12,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:13:12,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 22:13:12,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877639050] [2023-08-26 22:13:12,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:13:12,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:13:12,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:13:12,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:13:12,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:13:12,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 166 [2023-08-26 22:13:12,239 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) [2023-08-26 22:13:12,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:13:12,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 166 [2023-08-26 22:13:12,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:13:12,296 INFO L124 PetriNetUnfolderBase]: 37/92 cut-off events. [2023-08-26 22:13:12,297 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:13:12,297 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. [2023-08-26 22:13:12,297 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 15 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2023-08-26 22:13:12,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 20 transitions, 98 flow [2023-08-26 22:13:12,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:13:12,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:13:12,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 449 transitions. [2023-08-26 22:13:12,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4508032128514056 [2023-08-26 22:13:12,300 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 449 transitions. [2023-08-26 22:13:12,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 449 transitions. [2023-08-26 22:13:12,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:13:12,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 449 transitions. [2023-08-26 22:13:12,301 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) [2023-08-26 22:13:12,302 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) [2023-08-26 22:13:12,303 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) [2023-08-26 22:13:12,303 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 6 states and 449 transitions. [2023-08-26 22:13:12,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 20 transitions, 98 flow [2023-08-26 22:13:12,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 20 transitions, 94 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 22:13:12,304 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 78 flow [2023-08-26 22:13:12,304 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} [2023-08-26 22:13:12,304 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 7 predicate places. [2023-08-26 22:13:12,304 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 78 flow [2023-08-26 22:13:12,305 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) [2023-08-26 22:13:12,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:13:12,305 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-26 22:13:12,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 22:13:12,509 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 [2023-08-26 22:13:12,510 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)] === [2023-08-26 22:13:12,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:13:12,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1714620803, now seen corresponding path program 2 times [2023-08-26 22:13:12,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:13:12,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496593817] [2023-08-26 22:13:12,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:13:12,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:13:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:13:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:13:12,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:13:12,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496593817] [2023-08-26 22:13:12,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496593817] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:13:12,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470489918] [2023-08-26 22:13:12,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:13:12,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:13:12,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:13:12,606 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) [2023-08-26 22:13:12,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 22:13:12,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 22:13:12,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:13:12,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-26 22:13:12,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:13:12,686 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 [2023-08-26 22:13:12,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 22:13:12,724 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 22:13:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 22:13:12,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:13:12,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470489918] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:13:12,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:13:12,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-08-26 22:13:12,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372310138] [2023-08-26 22:13:12,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:13:12,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:13:12,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:13:12,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:13:12,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-26 22:13:12,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2023-08-26 22:13:12,741 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) [2023-08-26 22:13:12,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:13:12,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2023-08-26 22:13:12,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:13:12,784 INFO L124 PetriNetUnfolderBase]: 21/60 cut-off events. [2023-08-26 22:13:12,784 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 22:13:12,785 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. [2023-08-26 22:13:12,785 INFO L140 encePairwiseOnDemand]: 159/166 looper letters, 19 selfloop transitions, 3 changer transitions 4/26 dead transitions. [2023-08-26 22:13:12,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 142 flow [2023-08-26 22:13:12,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:13:12,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:13:12,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-08-26 22:13:12,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497991967871486 [2023-08-26 22:13:12,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-08-26 22:13:12,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-08-26 22:13:12,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:13:12,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-08-26 22:13:12,787 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) [2023-08-26 22:13:12,788 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) [2023-08-26 22:13:12,788 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) [2023-08-26 22:13:12,788 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 78 flow. Second operand 3 states and 224 transitions. [2023-08-26 22:13:12,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 142 flow [2023-08-26 22:13:12,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 128 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 22:13:12,789 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 81 flow [2023-08-26 22:13:12,789 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} [2023-08-26 22:13:12,790 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2023-08-26 22:13:12,790 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 81 flow [2023-08-26 22:13:12,790 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) [2023-08-26 22:13:12,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:13:12,790 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:13:12,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 22:13:12,994 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 [2023-08-26 22:13:12,994 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)] === [2023-08-26 22:13:12,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:13:12,995 INFO L85 PathProgramCache]: Analyzing trace with hash 222627691, now seen corresponding path program 1 times [2023-08-26 22:13:12,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:13:12,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595191044] [2023-08-26 22:13:12,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:13:12,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:13:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:13:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:13:13,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:13:13,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595191044] [2023-08-26 22:13:13,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595191044] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:13:13,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760688005] [2023-08-26 22:13:13,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:13:13,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:13:13,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:13:13,069 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) [2023-08-26 22:13:13,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 22:13:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:13:13,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 22:13:13,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:13:13,178 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:13:13,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:13:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:13:13,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760688005] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:13:13,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:13:13,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 22:13:13,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130643814] [2023-08-26 22:13:13,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:13:13,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 22:13:13,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:13:13,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 22:13:13,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-26 22:13:13,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 166 [2023-08-26 22:13:13,232 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) [2023-08-26 22:13:13,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:13:13,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 166 [2023-08-26 22:13:13,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:13:13,269 INFO L124 PetriNetUnfolderBase]: 17/58 cut-off events. [2023-08-26 22:13:13,269 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-26 22:13:13,270 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. [2023-08-26 22:13:13,270 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 15 selfloop transitions, 11 changer transitions 0/26 dead transitions. [2023-08-26 22:13:13,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 26 transitions, 169 flow [2023-08-26 22:13:13,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 22:13:13,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 22:13:13,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 884 transitions. [2023-08-26 22:13:13,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44377510040160645 [2023-08-26 22:13:13,272 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 884 transitions. [2023-08-26 22:13:13,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 884 transitions. [2023-08-26 22:13:13,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:13:13,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 884 transitions. [2023-08-26 22:13:13,274 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) [2023-08-26 22:13:13,276 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) [2023-08-26 22:13:13,276 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) [2023-08-26 22:13:13,276 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 81 flow. Second operand 12 states and 884 transitions. [2023-08-26 22:13:13,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 26 transitions, 169 flow [2023-08-26 22:13:13,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 26 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:13:13,278 INFO L231 Difference]: Finished difference. Result has 46 places, 26 transitions, 162 flow [2023-08-26 22:13:13,278 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} [2023-08-26 22:13:13,278 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2023-08-26 22:13:13,278 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 26 transitions, 162 flow [2023-08-26 22:13:13,279 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) [2023-08-26 22:13:13,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:13:13,279 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:13:13,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-26 22:13:13,483 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 [2023-08-26 22:13:13,483 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)] === [2023-08-26 22:13:13,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:13:13,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1098503957, now seen corresponding path program 2 times [2023-08-26 22:13:13,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:13:13,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083517576] [2023-08-26 22:13:13,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:13:13,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:13:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:13:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 22:13:13,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:13:13,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083517576] [2023-08-26 22:13:13,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083517576] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:13:13,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:13:13,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 22:13:13,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42113289] [2023-08-26 22:13:13,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:13:13,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:13:13,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:13:13,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:13:13,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:13:13,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 166 [2023-08-26 22:13:13,825 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) [2023-08-26 22:13:13,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:13:13,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 166 [2023-08-26 22:13:13,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:13:13,885 INFO L124 PetriNetUnfolderBase]: 16/55 cut-off events. [2023-08-26 22:13:13,885 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-08-26 22:13:13,885 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. [2023-08-26 22:13:13,885 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 25 selfloop transitions, 5 changer transitions 5/35 dead transitions. [2023-08-26 22:13:13,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 35 transitions, 252 flow [2023-08-26 22:13:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:13:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:13:13,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 357 transitions. [2023-08-26 22:13:13,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35843373493975905 [2023-08-26 22:13:13,887 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 357 transitions. [2023-08-26 22:13:13,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 357 transitions. [2023-08-26 22:13:13,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:13:13,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 357 transitions. [2023-08-26 22:13:13,888 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) [2023-08-26 22:13:13,889 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) [2023-08-26 22:13:13,889 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) [2023-08-26 22:13:13,889 INFO L175 Difference]: Start difference. First operand has 46 places, 26 transitions, 162 flow. Second operand 6 states and 357 transitions. [2023-08-26 22:13:13,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 35 transitions, 252 flow [2023-08-26 22:13:13,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 35 transitions, 204 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-26 22:13:13,891 INFO L231 Difference]: Finished difference. Result has 45 places, 25 transitions, 120 flow [2023-08-26 22:13:13,892 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} [2023-08-26 22:13:13,892 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 24 predicate places. [2023-08-26 22:13:13,892 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 25 transitions, 120 flow [2023-08-26 22:13:13,892 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) [2023-08-26 22:13:13,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:13:13,892 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:13:13,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:13:13,893 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)] === [2023-08-26 22:13:13,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:13:13,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1098503956, now seen corresponding path program 1 times [2023-08-26 22:13:13,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:13:13,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520337097] [2023-08-26 22:13:13,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:13:13,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:13:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:13:14,087 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 22:13:14,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:13:14,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520337097] [2023-08-26 22:13:14,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520337097] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:13:14,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:13:14,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 22:13:14,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925643954] [2023-08-26 22:13:14,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:13:14,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:13:14,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:13:14,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:13:14,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:13:14,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 166 [2023-08-26 22:13:14,090 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) [2023-08-26 22:13:14,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:13:14,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 166 [2023-08-26 22:13:14,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:13:14,145 INFO L124 PetriNetUnfolderBase]: 13/48 cut-off events. [2023-08-26 22:13:14,145 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-08-26 22:13:14,145 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. [2023-08-26 22:13:14,145 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 20 selfloop transitions, 2 changer transitions 9/31 dead transitions. [2023-08-26 22:13:14,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 31 transitions, 192 flow [2023-08-26 22:13:14,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:13:14,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:13:14,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 353 transitions. [2023-08-26 22:13:14,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35441767068273095 [2023-08-26 22:13:14,147 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 353 transitions. [2023-08-26 22:13:14,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 353 transitions. [2023-08-26 22:13:14,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:13:14,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 353 transitions. [2023-08-26 22:13:14,148 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) [2023-08-26 22:13:14,149 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) [2023-08-26 22:13:14,149 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) [2023-08-26 22:13:14,149 INFO L175 Difference]: Start difference. First operand has 45 places, 25 transitions, 120 flow. Second operand 6 states and 353 transitions. [2023-08-26 22:13:14,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 31 transitions, 192 flow [2023-08-26 22:13:14,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 31 transitions, 183 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 22:13:14,151 INFO L231 Difference]: Finished difference. Result has 45 places, 21 transitions, 102 flow [2023-08-26 22:13:14,151 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} [2023-08-26 22:13:14,151 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 24 predicate places. [2023-08-26 22:13:14,152 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 21 transitions, 102 flow [2023-08-26 22:13:14,152 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) [2023-08-26 22:13:14,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:13:14,152 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:13:14,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 22:13:14,152 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)] === [2023-08-26 22:13:14,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:13:14,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1098495740, now seen corresponding path program 1 times [2023-08-26 22:13:14,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:13:14,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414626360] [2023-08-26 22:13:14,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:13:14,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:13:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:13:14,435 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 22:13:14,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:13:14,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414626360] [2023-08-26 22:13:14,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414626360] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:13:14,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:13:14,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 22:13:14,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493424008] [2023-08-26 22:13:14,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:13:14,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:13:14,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:13:14,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:13:14,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:13:14,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 166 [2023-08-26 22:13:14,437 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) [2023-08-26 22:13:14,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:13:14,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 166 [2023-08-26 22:13:14,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:13:14,475 INFO L124 PetriNetUnfolderBase]: 8/36 cut-off events. [2023-08-26 22:13:14,475 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-08-26 22:13:14,475 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. [2023-08-26 22:13:14,476 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 20 selfloop transitions, 5 changer transitions 0/25 dead transitions. [2023-08-26 22:13:14,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 25 transitions, 162 flow [2023-08-26 22:13:14,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 22:13:14,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 22:13:14,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 291 transitions. [2023-08-26 22:13:14,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506024096385542 [2023-08-26 22:13:14,477 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 291 transitions. [2023-08-26 22:13:14,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 291 transitions. [2023-08-26 22:13:14,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:13:14,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 291 transitions. [2023-08-26 22:13:14,479 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) [2023-08-26 22:13:14,481 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) [2023-08-26 22:13:14,481 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) [2023-08-26 22:13:14,481 INFO L175 Difference]: Start difference. First operand has 45 places, 21 transitions, 102 flow. Second operand 5 states and 291 transitions. [2023-08-26 22:13:14,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 25 transitions, 162 flow [2023-08-26 22:13:14,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 25 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 22:13:14,483 INFO L231 Difference]: Finished difference. Result has 41 places, 23 transitions, 124 flow [2023-08-26 22:13:14,483 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} [2023-08-26 22:13:14,485 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 20 predicate places. [2023-08-26 22:13:14,485 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 124 flow [2023-08-26 22:13:14,485 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) [2023-08-26 22:13:14,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:13:14,485 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:13:14,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 22:13:14,486 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)] === [2023-08-26 22:13:14,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:13:14,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1135301393, now seen corresponding path program 1 times [2023-08-26 22:13:14,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:13:14,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058125189] [2023-08-26 22:13:14,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:13:14,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:13:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:13:14,698 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 22:13:14,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:13:14,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058125189] [2023-08-26 22:13:14,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058125189] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:13:14,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:13:14,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 22:13:14,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194054445] [2023-08-26 22:13:14,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:13:14,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:13:14,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:13:14,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:13:14,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:13:14,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 166 [2023-08-26 22:13:14,700 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) [2023-08-26 22:13:14,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:13:14,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 166 [2023-08-26 22:13:14,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:13:14,734 INFO L124 PetriNetUnfolderBase]: 5/31 cut-off events. [2023-08-26 22:13:14,735 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-08-26 22:13:14,735 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. [2023-08-26 22:13:14,735 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 17 selfloop transitions, 3 changer transitions 2/22 dead transitions. [2023-08-26 22:13:14,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 22 transitions, 158 flow [2023-08-26 22:13:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 22:13:14,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 22:13:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 298 transitions. [2023-08-26 22:13:14,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35903614457831323 [2023-08-26 22:13:14,737 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 298 transitions. [2023-08-26 22:13:14,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 298 transitions. [2023-08-26 22:13:14,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:13:14,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 298 transitions. [2023-08-26 22:13:14,738 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) [2023-08-26 22:13:14,739 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) [2023-08-26 22:13:14,739 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) [2023-08-26 22:13:14,739 INFO L175 Difference]: Start difference. First operand has 41 places, 23 transitions, 124 flow. Second operand 5 states and 298 transitions. [2023-08-26 22:13:14,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 22 transitions, 158 flow [2023-08-26 22:13:14,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 22 transitions, 150 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 22:13:14,740 INFO L231 Difference]: Finished difference. Result has 40 places, 20 transitions, 104 flow [2023-08-26 22:13:14,741 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} [2023-08-26 22:13:14,741 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 19 predicate places. [2023-08-26 22:13:14,741 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 20 transitions, 104 flow [2023-08-26 22:13:14,741 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) [2023-08-26 22:13:14,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:13:14,742 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:13:14,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 22:13:14,742 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)] === [2023-08-26 22:13:14,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:13:14,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1135301420, now seen corresponding path program 2 times [2023-08-26 22:13:14,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:13:14,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465567753] [2023-08-26 22:13:14,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:13:14,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:13:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:13:14,942 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 22:13:14,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:13:14,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465567753] [2023-08-26 22:13:14,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465567753] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:13:14,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:13:14,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 22:13:14,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722393942] [2023-08-26 22:13:14,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:13:14,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:13:14,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:13:14,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:13:14,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:13:14,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 166 [2023-08-26 22:13:14,947 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) [2023-08-26 22:13:14,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:13:14,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 166 [2023-08-26 22:13:14,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:13:14,970 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2023-08-26 22:13:14,970 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-08-26 22:13:14,971 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. [2023-08-26 22:13:14,971 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-08-26 22:13:14,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 19 transitions, 136 flow [2023-08-26 22:13:14,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 22:13:14,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 22:13:14,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 295 transitions. [2023-08-26 22:13:14,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35542168674698793 [2023-08-26 22:13:14,972 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 295 transitions. [2023-08-26 22:13:14,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 295 transitions. [2023-08-26 22:13:14,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:13:14,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 295 transitions. [2023-08-26 22:13:14,973 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) [2023-08-26 22:13:14,974 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) [2023-08-26 22:13:14,974 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) [2023-08-26 22:13:14,974 INFO L175 Difference]: Start difference. First operand has 40 places, 20 transitions, 104 flow. Second operand 5 states and 295 transitions. [2023-08-26 22:13:14,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 19 transitions, 136 flow [2023-08-26 22:13:14,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 19 transitions, 125 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-26 22:13:14,975 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-26 22:13:14,975 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} [2023-08-26 22:13:14,976 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 16 predicate places. [2023-08-26 22:13:14,976 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-26 22:13:14,977 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) [2023-08-26 22:13:14,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2023-08-26 22:13:14,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-08-26 22:13:14,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-08-26 22:13:14,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-08-26 22:13:14,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-08-26 22:13:14,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-08-26 22:13:14,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2023-08-26 22:13:14,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-08-26 22:13:14,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-08-26 22:13:14,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 22:13:14,980 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1] [2023-08-26 22:13:14,983 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 22:13:14,983 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 22:13:14,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 10:13:14 BasicIcfg [2023-08-26 22:13:14,985 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 22:13:14,985 INFO L158 Benchmark]: Toolchain (without parser) took 5742.79ms. Allocated memory was 339.7MB in the beginning and 476.1MB in the end (delta: 136.3MB). Free memory was 313.1MB in the beginning and 209.2MB in the end (delta: 103.9MB). Peak memory consumption was 243.4MB. Max. memory is 16.0GB. [2023-08-26 22:13:14,986 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 339.7MB. Free memory was 317.1MB in the beginning and 317.0MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 22:13:14,987 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.33ms. Allocated memory is still 339.7MB. Free memory was 313.1MB in the beginning and 285.9MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-26 22:13:14,987 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.30ms. Allocated memory is still 339.7MB. Free memory was 285.9MB in the beginning and 282.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 22:13:14,987 INFO L158 Benchmark]: Boogie Preprocessor took 18.29ms. Allocated memory is still 339.7MB. Free memory was 282.9MB in the beginning and 281.9MB in the end (delta: 923.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 22:13:14,987 INFO L158 Benchmark]: RCFGBuilder took 244.90ms. Allocated memory is still 339.7MB. Free memory was 281.9MB in the beginning and 267.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 22:13:14,987 INFO L158 Benchmark]: TraceAbstraction took 5084.17ms. Allocated memory was 339.7MB in the beginning and 476.1MB in the end (delta: 136.3MB). Free memory was 267.0MB in the beginning and 209.2MB in the end (delta: 57.8MB). Peak memory consumption was 197.2MB. Max. memory is 16.0GB. [2023-08-26 22:13:14,988 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 339.7MB. Free memory was 317.1MB in the beginning and 317.0MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 361.33ms. Allocated memory is still 339.7MB. Free memory was 313.1MB in the beginning and 285.9MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 30.30ms. Allocated memory is still 339.7MB. Free memory was 285.9MB in the beginning and 282.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 18.29ms. Allocated memory is still 339.7MB. Free memory was 282.9MB in the beginning and 281.9MB in the end (delta: 923.9kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 244.90ms. Allocated memory is still 339.7MB. Free memory was 281.9MB in the beginning and 267.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 5084.17ms. Allocated memory was 339.7MB in the beginning and 476.1MB in the end (delta: 136.3MB). Free memory was 267.0MB in the beginning and 209.2MB in the end (delta: 57.8MB). Peak memory consumption was 197.2MB. 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: 1.6s, 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: 5.0s, OverallIterations: 10, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 62 SdHoareTripleChecker+Valid, 0.2s 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, 0.1s SatisfiabilityAnalysisTime, 1.6s 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! [2023-08-26 22:13:15,003 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...