/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/04-mutex_10-ptrmunge_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 04:40:37,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 04:40:37,880 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 04:40:37,885 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 04:40:37,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 04:40:37,920 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 04:40:37,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 04:40:37,921 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 04:40:37,922 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 04:40:37,925 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 04:40:37,926 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 04:40:37,926 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 04:40:37,926 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 04:40:37,927 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 04:40:37,927 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 04:40:37,928 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 04:40:37,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 04:40:37,928 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 04:40:37,928 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 04:40:37,928 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 04:40:37,929 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 04:40:37,929 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 04:40:37,929 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 04:40:37,930 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 04:40:37,930 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 04:40:37,930 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 04:40:37,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 04:40:37,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:40:37,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 04:40:37,931 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 04:40:37,932 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 04:40:37,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 04:40:37,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 04:40:37,932 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 04:40:37,932 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 04:40:37,933 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 04:40:38,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 04:40:38,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 04:40:38,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 04:40:38,265 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 04:40:38,266 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 04:40:38,267 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_10-ptrmunge_nr.i [2023-08-27 04:40:39,387 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 04:40:39,635 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 04:40:39,636 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_10-ptrmunge_nr.i [2023-08-27 04:40:39,651 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65ca6e58a/42dbf7356e0f4fdd95c7f2bb8f5969d7/FLAGbdefb4c30 [2023-08-27 04:40:39,672 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65ca6e58a/42dbf7356e0f4fdd95c7f2bb8f5969d7 [2023-08-27 04:40:39,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 04:40:39,676 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 04:40:39,676 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 04:40:39,677 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 04:40:39,679 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 04:40:39,679 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:40:39" (1/1) ... [2023-08-27 04:40:39,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c219a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:39, skipping insertion in model container [2023-08-27 04:40:39,680 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:40:39" (1/1) ... [2023-08-27 04:40:39,724 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 04:40:40,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:40:40,102 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 04:40:40,130 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 04:40:40,131 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 04:40:40,137 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-27 04:40:40,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:40:40,224 INFO L206 MainTranslator]: Completed translation [2023-08-27 04:40:40,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:40 WrapperNode [2023-08-27 04:40:40,224 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 04:40:40,226 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 04:40:40,226 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 04:40:40,226 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 04:40:40,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:40" (1/1) ... [2023-08-27 04:40:40,261 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:40" (1/1) ... [2023-08-27 04:40:40,279 INFO L138 Inliner]: procedures = 263, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2023-08-27 04:40:40,279 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 04:40:40,280 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 04:40:40,280 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 04:40:40,280 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 04:40:40,287 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:40" (1/1) ... [2023-08-27 04:40:40,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:40" (1/1) ... [2023-08-27 04:40:40,297 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:40" (1/1) ... [2023-08-27 04:40:40,297 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:40" (1/1) ... [2023-08-27 04:40:40,301 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:40" (1/1) ... [2023-08-27 04:40:40,302 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:40" (1/1) ... [2023-08-27 04:40:40,303 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:40" (1/1) ... [2023-08-27 04:40:40,304 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:40" (1/1) ... [2023-08-27 04:40:40,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 04:40:40,307 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 04:40:40,307 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 04:40:40,307 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 04:40:40,308 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:40" (1/1) ... [2023-08-27 04:40:40,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:40:40,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:40:40,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 04:40:40,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 04:40:40,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 04:40:40,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 04:40:40,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 04:40:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 04:40:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 04:40:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 04:40:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 04:40:40,394 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 04:40:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 04:40:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 04:40:40,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 04:40:40,395 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 04:40:40,545 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 04:40:40,546 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 04:40:40,758 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 04:40:40,766 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 04:40:40,767 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 04:40:40,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:40:40 BoogieIcfgContainer [2023-08-27 04:40:40,768 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 04:40:40,770 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 04:40:40,770 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 04:40:40,773 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 04:40:40,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:40:39" (1/3) ... [2023-08-27 04:40:40,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313aab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:40:40, skipping insertion in model container [2023-08-27 04:40:40,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:40" (2/3) ... [2023-08-27 04:40:40,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313aab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:40:40, skipping insertion in model container [2023-08-27 04:40:40,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:40:40" (3/3) ... [2023-08-27 04:40:40,775 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_10-ptrmunge_nr.i [2023-08-27 04:40:40,815 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 04:40:40,816 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-27 04:40:40,816 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 04:40:40,894 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 04:40:40,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 73 transitions, 154 flow [2023-08-27 04:40:40,981 INFO L124 PetriNetUnfolderBase]: 0/72 cut-off events. [2023-08-27 04:40:40,981 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 04:40:40,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 72 events. 0/72 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-27 04:40:40,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 73 transitions, 154 flow [2023-08-27 04:40:40,987 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 65 transitions, 133 flow [2023-08-27 04:40:40,992 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 04:40:41,000 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 133 flow [2023-08-27 04:40:41,002 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 133 flow [2023-08-27 04:40:41,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 133 flow [2023-08-27 04:40:41,030 INFO L124 PetriNetUnfolderBase]: 0/65 cut-off events. [2023-08-27 04:40:41,031 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:40:41,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 65 events. 0/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-27 04:40:41,032 INFO L119 LiptonReduction]: Number of co-enabled transitions 612 [2023-08-27 04:40:43,606 INFO L134 LiptonReduction]: Checked pairs total: 1164 [2023-08-27 04:40:43,606 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-08-27 04:40:43,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 04:40:43,623 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;@48044e1a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 04:40:43,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-27 04:40:43,626 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 04:40:43,626 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-27 04:40:43,626 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:40:43,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:40:43,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 04:40:43,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 04:40:43,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:40:43,631 INFO L85 PathProgramCache]: Analyzing trace with hash 7733404, now seen corresponding path program 1 times [2023-08-27 04:40:43,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:40:43,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290286052] [2023-08-27 04:40:43,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:40:43,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:40:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:40:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:40:44,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:40:44,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290286052] [2023-08-27 04:40:44,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290286052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:40:44,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:40:44,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:40:44,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014703415] [2023-08-27 04:40:44,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:40:44,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 04:40:44,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:40:44,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 04:40:44,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 04:40:44,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 129 [2023-08-27 04:40:44,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 33 flow. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:44,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:40:44,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 129 [2023-08-27 04:40:44,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:40:44,141 INFO L124 PetriNetUnfolderBase]: 32/79 cut-off events. [2023-08-27 04:40:44,141 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:40:44,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 79 events. 32/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 255 event pairs, 6 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 154. Up to 56 conditions per place. [2023-08-27 04:40:44,144 INFO L140 encePairwiseOnDemand]: 123/129 looper letters, 19 selfloop transitions, 5 changer transitions 4/28 dead transitions. [2023-08-27 04:40:44,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 28 transitions, 115 flow [2023-08-27 04:40:44,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:40:44,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:40:44,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 226 transitions. [2023-08-27 04:40:44,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.437984496124031 [2023-08-27 04:40:44,160 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 226 transitions. [2023-08-27 04:40:44,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 226 transitions. [2023-08-27 04:40:44,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:40:44,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 226 transitions. [2023-08-27 04:40:44,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:44,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:44,176 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:44,178 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 33 flow. Second operand 4 states and 226 transitions. [2023-08-27 04:40:44,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 28 transitions, 115 flow [2023-08-27 04:40:44,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 114 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:40:44,182 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 58 flow [2023-08-27 04:40:44,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2023-08-27 04:40:44,187 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2023-08-27 04:40:44,187 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 58 flow [2023-08-27 04:40:44,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:44,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:40:44,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 04:40:44,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 04:40:44,188 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 04:40:44,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:40:44,196 INFO L85 PathProgramCache]: Analyzing trace with hash 7733273, now seen corresponding path program 1 times [2023-08-27 04:40:44,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:40:44,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934459756] [2023-08-27 04:40:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:40:44,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:40:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:40:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:40:44,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:40:44,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934459756] [2023-08-27 04:40:44,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934459756] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:40:44,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:40:44,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:40:44,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541887930] [2023-08-27 04:40:44,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:40:44,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 04:40:44,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:40:44,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 04:40:44,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 04:40:44,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 129 [2023-08-27 04:40:44,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:44,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:40:44,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 129 [2023-08-27 04:40:44,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:40:44,409 INFO L124 PetriNetUnfolderBase]: 20/55 cut-off events. [2023-08-27 04:40:44,409 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-27 04:40:44,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 55 events. 20/55 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 151 event pairs, 6 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 130. Up to 42 conditions per place. [2023-08-27 04:40:44,410 INFO L140 encePairwiseOnDemand]: 123/129 looper letters, 15 selfloop transitions, 6 changer transitions 2/23 dead transitions. [2023-08-27 04:40:44,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 23 transitions, 123 flow [2023-08-27 04:40:44,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:40:44,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:40:44,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2023-08-27 04:40:44,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2023-08-27 04:40:44,412 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 220 transitions. [2023-08-27 04:40:44,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 220 transitions. [2023-08-27 04:40:44,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:40:44,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 220 transitions. [2023-08-27 04:40:44,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:44,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:44,415 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:44,416 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 58 flow. Second operand 4 states and 220 transitions. [2023-08-27 04:40:44,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 23 transitions, 123 flow [2023-08-27 04:40:44,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 118 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:40:44,417 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 85 flow [2023-08-27 04:40:44,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=85, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-08-27 04:40:44,418 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 8 predicate places. [2023-08-27 04:40:44,418 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 85 flow [2023-08-27 04:40:44,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:44,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:40:44,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:40:44,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 04:40:44,419 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 04:40:44,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:40:44,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1541960687, now seen corresponding path program 1 times [2023-08-27 04:40:44,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:40:44,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967759094] [2023-08-27 04:40:44,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:40:44,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:40:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:40:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:40:44,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:40:44,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967759094] [2023-08-27 04:40:44,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967759094] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:40:44,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:40:44,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 04:40:44,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388865615] [2023-08-27 04:40:44,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:40:44,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 04:40:44,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:40:44,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 04:40:44,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 04:40:44,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 129 [2023-08-27 04:40:44,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 85 flow. Second operand has 6 states, 6 states have (on average 46.166666666666664) internal successors, (277), 6 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:44,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:40:44,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 129 [2023-08-27 04:40:44,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:40:44,801 INFO L124 PetriNetUnfolderBase]: 24/67 cut-off events. [2023-08-27 04:40:44,801 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-08-27 04:40:44,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 67 events. 24/67 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 208 event pairs, 6 based on Foata normal form. 2/64 useless extension candidates. Maximal degree in co-relation 187. Up to 44 conditions per place. [2023-08-27 04:40:44,803 INFO L140 encePairwiseOnDemand]: 122/129 looper letters, 15 selfloop transitions, 8 changer transitions 5/28 dead transitions. [2023-08-27 04:40:44,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 173 flow [2023-08-27 04:40:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 04:40:44,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 04:40:44,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 254 transitions. [2023-08-27 04:40:44,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3937984496124031 [2023-08-27 04:40:44,805 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 254 transitions. [2023-08-27 04:40:44,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 254 transitions. [2023-08-27 04:40:44,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:40:44,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 254 transitions. [2023-08-27 04:40:44,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.8) internal successors, (254), 5 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:44,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:44,808 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:44,808 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 85 flow. Second operand 5 states and 254 transitions. [2023-08-27 04:40:44,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 173 flow [2023-08-27 04:40:44,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:40:44,813 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 121 flow [2023-08-27 04:40:44,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2023-08-27 04:40:44,814 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 13 predicate places. [2023-08-27 04:40:44,814 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 121 flow [2023-08-27 04:40:44,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.166666666666664) internal successors, (277), 6 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:44,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:40:44,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:40:44,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 04:40:44,815 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 04:40:44,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:40:44,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1546112207, now seen corresponding path program 2 times [2023-08-27 04:40:44,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:40:44,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769646604] [2023-08-27 04:40:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:40:44,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:40:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:40:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:40:44,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:40:44,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769646604] [2023-08-27 04:40:44,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769646604] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:40:44,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:40:44,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 04:40:44,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837103404] [2023-08-27 04:40:44,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:40:44,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 04:40:44,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:40:44,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 04:40:44,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 04:40:44,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 129 [2023-08-27 04:40:44,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 46.166666666666664) internal successors, (277), 6 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:44,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:40:44,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 129 [2023-08-27 04:40:44,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:40:45,089 INFO L124 PetriNetUnfolderBase]: 20/55 cut-off events. [2023-08-27 04:40:45,089 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-08-27 04:40:45,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 55 events. 20/55 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 151 event pairs, 6 based on Foata normal form. 2/54 useless extension candidates. Maximal degree in co-relation 168. Up to 28 conditions per place. [2023-08-27 04:40:45,090 INFO L140 encePairwiseOnDemand]: 123/129 looper letters, 9 selfloop transitions, 8 changer transitions 9/26 dead transitions. [2023-08-27 04:40:45,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 182 flow [2023-08-27 04:40:45,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 04:40:45,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 04:40:45,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 342 transitions. [2023-08-27 04:40:45,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787375415282392 [2023-08-27 04:40:45,092 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 342 transitions. [2023-08-27 04:40:45,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 342 transitions. [2023-08-27 04:40:45,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:40:45,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 342 transitions. [2023-08-27 04:40:45,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 48.857142857142854) internal successors, (342), 7 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:45,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:45,096 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:45,096 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 121 flow. Second operand 7 states and 342 transitions. [2023-08-27 04:40:45,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 182 flow [2023-08-27 04:40:45,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 158 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 04:40:45,098 INFO L231 Difference]: Finished difference. Result has 31 places, 15 transitions, 90 flow [2023-08-27 04:40:45,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=90, PETRI_PLACES=31, PETRI_TRANSITIONS=15} [2023-08-27 04:40:45,099 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 12 predicate places. [2023-08-27 04:40:45,099 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 15 transitions, 90 flow [2023-08-27 04:40:45,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.166666666666664) internal successors, (277), 6 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:45,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:40:45,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:40:45,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 04:40:45,100 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 04:40:45,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:40:45,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1542216754, now seen corresponding path program 1 times [2023-08-27 04:40:45,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:40:45,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444905863] [2023-08-27 04:40:45,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:40:45,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:40:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:40:45,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:40:45,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:40:45,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444905863] [2023-08-27 04:40:45,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444905863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:40:45,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:40:45,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 04:40:45,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448566755] [2023-08-27 04:40:45,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:40:45,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 04:40:45,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:40:45,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 04:40:45,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 04:40:45,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 129 [2023-08-27 04:40:45,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 15 transitions, 90 flow. Second operand has 6 states, 6 states have (on average 46.166666666666664) internal successors, (277), 6 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:45,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:40:45,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 129 [2023-08-27 04:40:45,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:40:45,352 INFO L124 PetriNetUnfolderBase]: 8/32 cut-off events. [2023-08-27 04:40:45,352 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-08-27 04:40:45,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 32 events. 8/32 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 59 event pairs, 4 based on Foata normal form. 3/32 useless extension candidates. Maximal degree in co-relation 97. Up to 18 conditions per place. [2023-08-27 04:40:45,352 INFO L140 encePairwiseOnDemand]: 123/129 looper letters, 6 selfloop transitions, 4 changer transitions 9/19 dead transitions. [2023-08-27 04:40:45,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 19 transitions, 136 flow [2023-08-27 04:40:45,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 04:40:45,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 04:40:45,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 335 transitions. [2023-08-27 04:40:45,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709856035437431 [2023-08-27 04:40:45,354 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 335 transitions. [2023-08-27 04:40:45,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 335 transitions. [2023-08-27 04:40:45,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:40:45,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 335 transitions. [2023-08-27 04:40:45,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 47.857142857142854) internal successors, (335), 7 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:45,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:45,357 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:45,357 INFO L175 Difference]: Start difference. First operand has 31 places, 15 transitions, 90 flow. Second operand 7 states and 335 transitions. [2023-08-27 04:40:45,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 19 transitions, 136 flow [2023-08-27 04:40:45,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 104 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-27 04:40:45,359 INFO L231 Difference]: Finished difference. Result has 27 places, 10 transitions, 48 flow [2023-08-27 04:40:45,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=10} [2023-08-27 04:40:45,360 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 8 predicate places. [2023-08-27 04:40:45,360 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 10 transitions, 48 flow [2023-08-27 04:40:45,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.166666666666664) internal successors, (277), 6 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:45,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:40:45,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:40:45,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 04:40:45,361 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 04:40:45,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:40:45,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1545532204, now seen corresponding path program 2 times [2023-08-27 04:40:45,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:40:45,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337262477] [2023-08-27 04:40:45,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:40:45,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:40:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:40:45,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:40:45,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:40:45,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337262477] [2023-08-27 04:40:45,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337262477] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:40:45,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:40:45,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 04:40:45,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506728502] [2023-08-27 04:40:45,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:40:45,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 04:40:45,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:40:45,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 04:40:45,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 04:40:45,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 129 [2023-08-27 04:40:45,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 10 transitions, 48 flow. Second operand has 6 states, 6 states have (on average 46.166666666666664) internal successors, (277), 6 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:45,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:40:45,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 129 [2023-08-27 04:40:45,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:40:45,545 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-27 04:40:45,545 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-27 04:40:45,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 8 events. 0/8 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 3/11 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-08-27 04:40:45,546 INFO L140 encePairwiseOnDemand]: 123/129 looper letters, 0 selfloop transitions, 0 changer transitions 8/8 dead transitions. [2023-08-27 04:40:45,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 8 transitions, 52 flow [2023-08-27 04:40:45,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 04:40:45,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 04:40:45,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 280 transitions. [2023-08-27 04:40:45,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36175710594315247 [2023-08-27 04:40:45,547 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 280 transitions. [2023-08-27 04:40:45,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 280 transitions. [2023-08-27 04:40:45,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:40:45,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 280 transitions. [2023-08-27 04:40:45,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 46.666666666666664) internal successors, (280), 6 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:45,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:45,550 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:45,550 INFO L175 Difference]: Start difference. First operand has 27 places, 10 transitions, 48 flow. Second operand 6 states and 280 transitions. [2023-08-27 04:40:45,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 8 transitions, 52 flow [2023-08-27 04:40:45,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 8 transitions, 35 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-27 04:40:45,550 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-27 04:40:45,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-27 04:40:45,551 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2023-08-27 04:40:45,551 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-27 04:40:45,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.166666666666664) internal successors, (277), 6 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:40:45,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2023-08-27 04:40:45,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2023-08-27 04:40:45,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-27 04:40:45,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2023-08-27 04:40:45,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2023-08-27 04:40:45,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2023-08-27 04:40:45,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2023-08-27 04:40:45,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 04:40:45,556 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-08-27 04:40:45,560 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 04:40:45,561 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 04:40:45,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 04:40:45 BasicIcfg [2023-08-27 04:40:45,563 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 04:40:45,566 INFO L158 Benchmark]: Toolchain (without parser) took 5888.25ms. Allocated memory was 341.8MB in the beginning and 446.7MB in the end (delta: 104.9MB). Free memory was 316.5MB in the beginning and 286.1MB in the end (delta: 30.4MB). Peak memory consumption was 135.9MB. Max. memory is 16.0GB. [2023-08-27 04:40:45,568 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 341.8MB. Free memory is still 318.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 04:40:45,570 INFO L158 Benchmark]: CACSL2BoogieTranslator took 548.30ms. Allocated memory is still 341.8MB. Free memory was 316.5MB in the beginning and 289.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-27 04:40:45,571 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.51ms. Allocated memory is still 341.8MB. Free memory was 289.2MB in the beginning and 287.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 04:40:45,571 INFO L158 Benchmark]: Boogie Preprocessor took 26.90ms. Allocated memory is still 341.8MB. Free memory was 287.0MB in the beginning and 285.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 04:40:45,571 INFO L158 Benchmark]: RCFGBuilder took 461.32ms. Allocated memory is still 341.8MB. Free memory was 285.3MB in the beginning and 271.2MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 04:40:45,573 INFO L158 Benchmark]: TraceAbstraction took 4793.14ms. Allocated memory was 341.8MB in the beginning and 446.7MB in the end (delta: 104.9MB). Free memory was 270.3MB in the beginning and 286.1MB in the end (delta: -15.7MB). Peak memory consumption was 89.8MB. Max. memory is 16.0GB. [2023-08-27 04:40:45,575 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 341.8MB. Free memory is still 318.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 548.30ms. Allocated memory is still 341.8MB. Free memory was 316.5MB in the beginning and 289.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 53.51ms. Allocated memory is still 341.8MB. Free memory was 289.2MB in the beginning and 287.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.90ms. Allocated memory is still 341.8MB. Free memory was 287.0MB in the beginning and 285.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 461.32ms. Allocated memory is still 341.8MB. Free memory was 285.3MB in the beginning and 271.2MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 4793.14ms. Allocated memory was 341.8MB in the beginning and 446.7MB in the end (delta: 104.9MB). Free memory was 270.3MB in the beginning and 286.1MB in the end (delta: -15.7MB). Peak memory consumption was 89.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 736]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [736] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 69 PlacesBefore, 19 PlacesAfterwards, 65 TransitionsBefore, 15 TransitionsAfterwards, 612 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 56 TotalNumberOfCompositions, 1164 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 806, independent: 697, independent conditional: 0, independent unconditional: 697, dependent: 109, dependent conditional: 0, dependent unconditional: 109, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 352, independent: 336, independent conditional: 0, independent unconditional: 336, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 806, independent: 361, independent conditional: 0, independent unconditional: 361, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 352, unknown conditional: 0, unknown unconditional: 352] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, 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: 923]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 923]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 923]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 923]: 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, 93 locations, 7 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: 4.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 322 IncrementalHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 0 mSDtfsCounter, 322 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=3, InterpolantAutomatonStates: 33, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 345 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 04:40:45,590 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...