/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 10:15:13,802 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 10:15:13,889 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 10:15:13,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 10:15:13,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 10:15:13,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 10:15:13,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 10:15:13,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 10:15:13,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 10:15:13,929 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 10:15:13,929 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 10:15:13,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 10:15:13,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 10:15:13,931 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 10:15:13,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 10:15:13,931 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 10:15:13,931 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 10:15:13,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 10:15:13,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 10:15:13,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 10:15:13,932 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 10:15:13,933 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 10:15:13,933 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 10:15:13,934 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 10:15:13,934 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 10:15:13,934 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 10:15:13,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 10:15:13,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:15:13,935 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 10:15:13,935 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 10:15:13,936 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 10:15:13,936 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 10:15:13,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 10:15:13,936 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 10:15:13,937 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 10:15:13,937 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 10:15:14,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 10:15:14,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 10:15:14,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 10:15:14,244 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 10:15:14,244 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 10:15:14,246 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.i [2023-08-27 10:15:15,437 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 10:15:15,705 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 10:15:15,705 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.i [2023-08-27 10:15:15,718 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7c3a033e/e6284fa2427d438fa42697a43f01a292/FLAG7e13d6780 [2023-08-27 10:15:15,729 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7c3a033e/e6284fa2427d438fa42697a43f01a292 [2023-08-27 10:15:15,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 10:15:15,732 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 10:15:15,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 10:15:15,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 10:15:15,736 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 10:15:15,736 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:15:15" (1/1) ... [2023-08-27 10:15:15,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bdd1a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:15:15, skipping insertion in model container [2023-08-27 10:15:15,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:15:15" (1/1) ... [2023-08-27 10:15:15,780 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 10:15:16,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:15:16,115 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 10:15:16,145 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:15:16,147 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:15:16,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:15:16,190 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:15:16,190 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:15:16,196 INFO L206 MainTranslator]: Completed translation [2023-08-27 10:15:16,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:15:16 WrapperNode [2023-08-27 10:15:16,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 10:15:16,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 10:15:16,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 10:15:16,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 10:15:16,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:15:16" (1/1) ... [2023-08-27 10:15:16,233 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:15:16" (1/1) ... [2023-08-27 10:15:16,255 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2023-08-27 10:15:16,255 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 10:15:16,256 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 10:15:16,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 10:15:16,256 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 10:15:16,263 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:15:16" (1/1) ... [2023-08-27 10:15:16,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:15:16" (1/1) ... [2023-08-27 10:15:16,269 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:15:16" (1/1) ... [2023-08-27 10:15:16,270 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:15:16" (1/1) ... [2023-08-27 10:15:16,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:15:16" (1/1) ... [2023-08-27 10:15:16,285 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:15:16" (1/1) ... [2023-08-27 10:15:16,286 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:15:16" (1/1) ... [2023-08-27 10:15:16,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:15:16" (1/1) ... [2023-08-27 10:15:16,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 10:15:16,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 10:15:16,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 10:15:16,290 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 10:15:16,290 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:15:16" (1/1) ... [2023-08-27 10:15:16,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:15:16,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 10:15:16,323 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 10:15:16,346 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 10:15:16,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 10:15:16,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 10:15:16,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 10:15:16,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 10:15:16,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 10:15:16,359 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-27 10:15:16,359 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-27 10:15:16,360 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-27 10:15:16,360 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-27 10:15:16,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 10:15:16,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 10:15:16,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 10:15:16,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 10:15:16,361 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 10:15:16,481 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 10:15:16,484 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 10:15:16,662 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 10:15:16,680 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 10:15:16,682 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 10:15:16,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:15:16 BoogieIcfgContainer [2023-08-27 10:15:16,685 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 10:15:16,687 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 10:15:16,687 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 10:15:16,690 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 10:15:16,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:15:15" (1/3) ... [2023-08-27 10:15:16,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe038bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:15:16, skipping insertion in model container [2023-08-27 10:15:16,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:15:16" (2/3) ... [2023-08-27 10:15:16,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe038bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:15:16, skipping insertion in model container [2023-08-27 10:15:16,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:15:16" (3/3) ... [2023-08-27 10:15:16,693 INFO L112 eAbstractionObserver]: Analyzing ICFG safe010_tso.i [2023-08-27 10:15:16,706 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 10:15:16,706 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-27 10:15:16,706 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 10:15:16,757 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 10:15:16,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 75 transitions, 160 flow [2023-08-27 10:15:16,831 INFO L124 PetriNetUnfolderBase]: 3/73 cut-off events. [2023-08-27 10:15:16,832 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:15:16,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 73 events. 3/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-08-27 10:15:16,836 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 75 transitions, 160 flow [2023-08-27 10:15:16,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 73 transitions, 152 flow [2023-08-27 10:15:16,846 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 10:15:16,859 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 73 transitions, 152 flow [2023-08-27 10:15:16,866 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 73 transitions, 152 flow [2023-08-27 10:15:16,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 73 transitions, 152 flow [2023-08-27 10:15:16,900 INFO L124 PetriNetUnfolderBase]: 3/73 cut-off events. [2023-08-27 10:15:16,900 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:15:16,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 73 events. 3/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-08-27 10:15:16,902 INFO L119 LiptonReduction]: Number of co-enabled transitions 1200 [2023-08-27 10:15:18,702 INFO L134 LiptonReduction]: Checked pairs total: 3221 [2023-08-27 10:15:18,702 INFO L136 LiptonReduction]: Total number of compositions: 73 [2023-08-27 10:15:18,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 10:15:18,729 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;@4d87dcb3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 10:15:18,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-27 10:15:18,736 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 10:15:18,736 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-27 10:15:18,736 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:15:18,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:15:18,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 10:15:18,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-27 10:15:18,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:15:18,743 INFO L85 PathProgramCache]: Analyzing trace with hash 275510815, now seen corresponding path program 1 times [2023-08-27 10:15:18,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:15:18,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20615682] [2023-08-27 10:15:18,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:15:18,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:15:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:15:18,967 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 10:15:18,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:15:18,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20615682] [2023-08-27 10:15:18,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20615682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:15:18,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:15:18,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:15:18,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254516465] [2023-08-27 10:15:18,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:15:18,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:15:18,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:15:18,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:15:18,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:15:19,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 148 [2023-08-27 10:15:19,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:19,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:15:19,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 148 [2023-08-27 10:15:19,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:15:19,094 INFO L124 PetriNetUnfolderBase]: 72/150 cut-off events. [2023-08-27 10:15:19,094 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 10:15:19,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 150 events. 72/150 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 526 event pairs, 19 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 296. Up to 101 conditions per place. [2023-08-27 10:15:19,098 INFO L140 encePairwiseOnDemand]: 140/148 looper letters, 23 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2023-08-27 10:15:19,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 28 transitions, 117 flow [2023-08-27 10:15:19,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:15:19,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:15:19,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2023-08-27 10:15:19,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48423423423423423 [2023-08-27 10:15:19,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2023-08-27 10:15:19,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2023-08-27 10:15:19,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:15:19,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2023-08-27 10:15:19,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:19,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:19,128 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:19,129 INFO L175 Difference]: Start difference. First operand has 25 places, 19 transitions, 44 flow. Second operand 3 states and 215 transitions. [2023-08-27 10:15:19,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 28 transitions, 117 flow [2023-08-27 10:15:19,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 28 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:15:19,134 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 65 flow [2023-08-27 10:15:19,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2023-08-27 10:15:19,141 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2023-08-27 10:15:19,141 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 65 flow [2023-08-27 10:15:19,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:19,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:15:19,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:15:19,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 10:15:19,143 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-27 10:15:19,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:15:19,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1489181039, now seen corresponding path program 1 times [2023-08-27 10:15:19,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:15:19,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785682330] [2023-08-27 10:15:19,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:15:19,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:15:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:15:19,395 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 10:15:19,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:15:19,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785682330] [2023-08-27 10:15:19,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785682330] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:15:19,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:15:19,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:15:19,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509754874] [2023-08-27 10:15:19,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:15:19,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:15:19,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:15:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:15:19,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:15:19,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 148 [2023-08-27 10:15:19,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:19,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:15:19,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 148 [2023-08-27 10:15:19,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:15:19,499 INFO L124 PetriNetUnfolderBase]: 131/281 cut-off events. [2023-08-27 10:15:19,499 INFO L125 PetriNetUnfolderBase]: For 51/58 co-relation queries the response was YES. [2023-08-27 10:15:19,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 699 conditions, 281 events. 131/281 cut-off events. For 51/58 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1383 event pairs, 30 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 688. Up to 106 conditions per place. [2023-08-27 10:15:19,506 INFO L140 encePairwiseOnDemand]: 141/148 looper letters, 36 selfloop transitions, 10 changer transitions 4/53 dead transitions. [2023-08-27 10:15:19,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 53 transitions, 275 flow [2023-08-27 10:15:19,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:15:19,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:15:19,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 329 transitions. [2023-08-27 10:15:19,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4445945945945946 [2023-08-27 10:15:19,514 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 329 transitions. [2023-08-27 10:15:19,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 329 transitions. [2023-08-27 10:15:19,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:15:19,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 329 transitions. [2023-08-27 10:15:19,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:19,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:19,520 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:19,520 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 65 flow. Second operand 5 states and 329 transitions. [2023-08-27 10:15:19,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 53 transitions, 275 flow [2023-08-27 10:15:19,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 53 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:15:19,523 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 136 flow [2023-08-27 10:15:19,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2023-08-27 10:15:19,524 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2023-08-27 10:15:19,524 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 136 flow [2023-08-27 10:15:19,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:19,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:15:19,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:15:19,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 10:15:19,528 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-27 10:15:19,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:15:19,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1079998472, now seen corresponding path program 1 times [2023-08-27 10:15:19,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:15:19,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112909981] [2023-08-27 10:15:19,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:15:19,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:15:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:15:19,661 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 10:15:19,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:15:19,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112909981] [2023-08-27 10:15:19,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112909981] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:15:19,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:15:19,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:15:19,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114909127] [2023-08-27 10:15:19,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:15:19,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:15:19,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:15:19,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:15:19,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:15:19,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 148 [2023-08-27 10:15:19,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:19,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:15:19,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 148 [2023-08-27 10:15:19,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:15:19,747 INFO L124 PetriNetUnfolderBase]: 137/308 cut-off events. [2023-08-27 10:15:19,747 INFO L125 PetriNetUnfolderBase]: For 357/362 co-relation queries the response was YES. [2023-08-27 10:15:19,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 308 events. 137/308 cut-off events. For 357/362 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1617 event pairs, 34 based on Foata normal form. 9/286 useless extension candidates. Maximal degree in co-relation 980. Up to 131 conditions per place. [2023-08-27 10:15:19,750 INFO L140 encePairwiseOnDemand]: 143/148 looper letters, 32 selfloop transitions, 10 changer transitions 2/49 dead transitions. [2023-08-27 10:15:19,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 49 transitions, 328 flow [2023-08-27 10:15:19,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:15:19,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:15:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 330 transitions. [2023-08-27 10:15:19,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2023-08-27 10:15:19,752 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 330 transitions. [2023-08-27 10:15:19,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 330 transitions. [2023-08-27 10:15:19,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:15:19,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 330 transitions. [2023-08-27 10:15:19,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:19,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:19,755 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:19,755 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 136 flow. Second operand 5 states and 330 transitions. [2023-08-27 10:15:19,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 49 transitions, 328 flow [2023-08-27 10:15:19,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 49 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 10:15:19,758 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 224 flow [2023-08-27 10:15:19,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2023-08-27 10:15:19,759 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 16 predicate places. [2023-08-27 10:15:19,759 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 224 flow [2023-08-27 10:15:19,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:19,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:15:19,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:15:19,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 10:15:19,760 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-27 10:15:19,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:15:19,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1079985979, now seen corresponding path program 1 times [2023-08-27 10:15:19,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:15:19,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333467722] [2023-08-27 10:15:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:15:19,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:15:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:15:19,903 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 10:15:19,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:15:19,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333467722] [2023-08-27 10:15:19,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333467722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:15:19,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:15:19,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:15:19,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339892168] [2023-08-27 10:15:19,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:15:19,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:15:19,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:15:19,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:15:19,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:15:19,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 148 [2023-08-27 10:15:19,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 54.333333333333336) internal successors, (326), 6 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:19,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:15:19,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 148 [2023-08-27 10:15:19,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:15:20,031 INFO L124 PetriNetUnfolderBase]: 192/399 cut-off events. [2023-08-27 10:15:20,031 INFO L125 PetriNetUnfolderBase]: For 1299/1299 co-relation queries the response was YES. [2023-08-27 10:15:20,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1576 conditions, 399 events. 192/399 cut-off events. For 1299/1299 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2117 event pairs, 19 based on Foata normal form. 21/352 useless extension candidates. Maximal degree in co-relation 1554. Up to 158 conditions per place. [2023-08-27 10:15:20,034 INFO L140 encePairwiseOnDemand]: 142/148 looper letters, 53 selfloop transitions, 21 changer transitions 4/79 dead transitions. [2023-08-27 10:15:20,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 79 transitions, 616 flow [2023-08-27 10:15:20,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 10:15:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 10:15:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 429 transitions. [2023-08-27 10:15:20,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140926640926641 [2023-08-27 10:15:20,037 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 429 transitions. [2023-08-27 10:15:20,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 429 transitions. [2023-08-27 10:15:20,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:15:20,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 429 transitions. [2023-08-27 10:15:20,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 61.285714285714285) internal successors, (429), 7 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 148.0) internal successors, (1184), 8 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,040 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 148.0) internal successors, (1184), 8 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,041 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 224 flow. Second operand 7 states and 429 transitions. [2023-08-27 10:15:20,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 79 transitions, 616 flow [2023-08-27 10:15:20,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 79 transitions, 614 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-27 10:15:20,047 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 392 flow [2023-08-27 10:15:20,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=392, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-08-27 10:15:20,048 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 28 predicate places. [2023-08-27 10:15:20,048 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 392 flow [2023-08-27 10:15:20,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.333333333333336) internal successors, (326), 6 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:15:20,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:15:20,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 10:15:20,049 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-27 10:15:20,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:15:20,049 INFO L85 PathProgramCache]: Analyzing trace with hash -879827804, now seen corresponding path program 1 times [2023-08-27 10:15:20,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:15:20,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867149396] [2023-08-27 10:15:20,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:15:20,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:15:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:15:20,144 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 10:15:20,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:15:20,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867149396] [2023-08-27 10:15:20,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867149396] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:15:20,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:15:20,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:15:20,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580882280] [2023-08-27 10:15:20,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:15:20,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:15:20,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:15:20,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:15:20,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:15:20,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 148 [2023-08-27 10:15:20,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 392 flow. Second operand has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:15:20,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 148 [2023-08-27 10:15:20,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:15:20,290 INFO L124 PetriNetUnfolderBase]: 241/509 cut-off events. [2023-08-27 10:15:20,290 INFO L125 PetriNetUnfolderBase]: For 2685/2697 co-relation queries the response was YES. [2023-08-27 10:15:20,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2208 conditions, 509 events. 241/509 cut-off events. For 2685/2697 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2802 event pairs, 23 based on Foata normal form. 20/483 useless extension candidates. Maximal degree in co-relation 2178. Up to 201 conditions per place. [2023-08-27 10:15:20,295 INFO L140 encePairwiseOnDemand]: 142/148 looper letters, 61 selfloop transitions, 16 changer transitions 6/91 dead transitions. [2023-08-27 10:15:20,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 91 transitions, 880 flow [2023-08-27 10:15:20,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 10:15:20,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 10:15:20,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 451 transitions. [2023-08-27 10:15:20,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43532818532818535 [2023-08-27 10:15:20,297 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 451 transitions. [2023-08-27 10:15:20,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 451 transitions. [2023-08-27 10:15:20,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:15:20,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 451 transitions. [2023-08-27 10:15:20,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.42857142857143) internal successors, (451), 7 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 148.0) internal successors, (1184), 8 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,301 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 148.0) internal successors, (1184), 8 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,301 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 392 flow. Second operand 7 states and 451 transitions. [2023-08-27 10:15:20,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 91 transitions, 880 flow [2023-08-27 10:15:20,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 91 transitions, 872 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-27 10:15:20,313 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 561 flow [2023-08-27 10:15:20,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=561, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2023-08-27 10:15:20,315 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 38 predicate places. [2023-08-27 10:15:20,315 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 561 flow [2023-08-27 10:15:20,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:15:20,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:15:20,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 10:15:20,316 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-27 10:15:20,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:15:20,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1290155682, now seen corresponding path program 1 times [2023-08-27 10:15:20,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:15:20,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526688579] [2023-08-27 10:15:20,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:15:20,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:15:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:15:20,423 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 10:15:20,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:15:20,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526688579] [2023-08-27 10:15:20,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526688579] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:15:20,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:15:20,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:15:20,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645947049] [2023-08-27 10:15:20,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:15:20,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:15:20,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:15:20,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:15:20,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:15:20,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 148 [2023-08-27 10:15:20,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 561 flow. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:15:20,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 148 [2023-08-27 10:15:20,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:15:20,499 INFO L124 PetriNetUnfolderBase]: 103/275 cut-off events. [2023-08-27 10:15:20,500 INFO L125 PetriNetUnfolderBase]: For 2126/2135 co-relation queries the response was YES. [2023-08-27 10:15:20,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 275 events. 103/275 cut-off events. For 2126/2135 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 1541 event pairs, 50 based on Foata normal form. 48/252 useless extension candidates. Maximal degree in co-relation 1249. Up to 206 conditions per place. [2023-08-27 10:15:20,502 INFO L140 encePairwiseOnDemand]: 143/148 looper letters, 49 selfloop transitions, 6 changer transitions 3/63 dead transitions. [2023-08-27 10:15:20,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 666 flow [2023-08-27 10:15:20,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:15:20,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:15:20,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 332 transitions. [2023-08-27 10:15:20,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2023-08-27 10:15:20,504 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 332 transitions. [2023-08-27 10:15:20,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 332 transitions. [2023-08-27 10:15:20,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:15:20,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 332 transitions. [2023-08-27 10:15:20,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 66.4) internal successors, (332), 5 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,506 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,507 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 561 flow. Second operand 5 states and 332 transitions. [2023-08-27 10:15:20,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 666 flow [2023-08-27 10:15:20,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 590 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-08-27 10:15:20,513 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 395 flow [2023-08-27 10:15:20,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=395, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-08-27 10:15:20,513 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 35 predicate places. [2023-08-27 10:15:20,514 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 395 flow [2023-08-27 10:15:20,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:15:20,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:15:20,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 10:15:20,514 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-27 10:15:20,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:15:20,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1257119941, now seen corresponding path program 1 times [2023-08-27 10:15:20,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:15:20,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727207098] [2023-08-27 10:15:20,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:15:20,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:15:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:15:20,550 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 10:15:20,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:15:20,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727207098] [2023-08-27 10:15:20,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727207098] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:15:20,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:15:20,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:15:20,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398809166] [2023-08-27 10:15:20,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:15:20,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:15:20,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:15:20,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:15:20,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:15:20,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 148 [2023-08-27 10:15:20,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 395 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:15:20,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 148 [2023-08-27 10:15:20,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:15:20,611 INFO L124 PetriNetUnfolderBase]: 64/204 cut-off events. [2023-08-27 10:15:20,611 INFO L125 PetriNetUnfolderBase]: For 1129/1136 co-relation queries the response was YES. [2023-08-27 10:15:20,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 204 events. 64/204 cut-off events. For 1129/1136 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1089 event pairs, 36 based on Foata normal form. 6/190 useless extension candidates. Maximal degree in co-relation 942. Up to 158 conditions per place. [2023-08-27 10:15:20,613 INFO L140 encePairwiseOnDemand]: 143/148 looper letters, 36 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2023-08-27 10:15:20,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 46 transitions, 495 flow [2023-08-27 10:15:20,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:15:20,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:15:20,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2023-08-27 10:15:20,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2023-08-27 10:15:20,614 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 266 transitions. [2023-08-27 10:15:20,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 266 transitions. [2023-08-27 10:15:20,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:15:20,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 266 transitions. [2023-08-27 10:15:20,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,616 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,617 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 395 flow. Second operand 4 states and 266 transitions. [2023-08-27 10:15:20,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 46 transitions, 495 flow [2023-08-27 10:15:20,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 46 transitions, 487 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:15:20,621 INFO L231 Difference]: Finished difference. Result has 59 places, 42 transitions, 389 flow [2023-08-27 10:15:20,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=389, PETRI_PLACES=59, PETRI_TRANSITIONS=42} [2023-08-27 10:15:20,622 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 34 predicate places. [2023-08-27 10:15:20,622 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 42 transitions, 389 flow [2023-08-27 10:15:20,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:15:20,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:15:20,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 10:15:20,622 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-27 10:15:20,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:15:20,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1257119942, now seen corresponding path program 1 times [2023-08-27 10:15:20,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:15:20,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951988883] [2023-08-27 10:15:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:15:20,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:15:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:15:20,651 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 10:15:20,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:15:20,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951988883] [2023-08-27 10:15:20,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951988883] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:15:20,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:15:20,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:15:20,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302215088] [2023-08-27 10:15:20,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:15:20,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:15:20,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:15:20,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:15:20,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:15:20,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 148 [2023-08-27 10:15:20,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 42 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:15:20,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 148 [2023-08-27 10:15:20,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:15:20,696 INFO L124 PetriNetUnfolderBase]: 41/146 cut-off events. [2023-08-27 10:15:20,696 INFO L125 PetriNetUnfolderBase]: For 880/887 co-relation queries the response was YES. [2023-08-27 10:15:20,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 146 events. 41/146 cut-off events. For 880/887 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 709 event pairs, 7 based on Foata normal form. 22/167 useless extension candidates. Maximal degree in co-relation 707. Up to 68 conditions per place. [2023-08-27 10:15:20,697 INFO L140 encePairwiseOnDemand]: 143/148 looper letters, 12 selfloop transitions, 3 changer transitions 38/55 dead transitions. [2023-08-27 10:15:20,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 55 transitions, 637 flow [2023-08-27 10:15:20,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:15:20,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:15:20,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 268 transitions. [2023-08-27 10:15:20,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2023-08-27 10:15:20,699 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 268 transitions. [2023-08-27 10:15:20,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 268 transitions. [2023-08-27 10:15:20,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:15:20,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 268 transitions. [2023-08-27 10:15:20,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,701 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,701 INFO L175 Difference]: Start difference. First operand has 59 places, 42 transitions, 389 flow. Second operand 4 states and 268 transitions. [2023-08-27 10:15:20,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 55 transitions, 637 flow [2023-08-27 10:15:20,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 631 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:15:20,706 INFO L231 Difference]: Finished difference. Result has 58 places, 13 transitions, 105 flow [2023-08-27 10:15:20,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=58, PETRI_TRANSITIONS=13} [2023-08-27 10:15:20,706 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 33 predicate places. [2023-08-27 10:15:20,706 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 13 transitions, 105 flow [2023-08-27 10:15:20,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:15:20,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:15:20,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 10:15:20,707 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-27 10:15:20,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:15:20,707 INFO L85 PathProgramCache]: Analyzing trace with hash 2113691207, now seen corresponding path program 1 times [2023-08-27 10:15:20,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:15:20,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157360915] [2023-08-27 10:15:20,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:15:20,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:15:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:15:20,784 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 10:15:20,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:15:20,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157360915] [2023-08-27 10:15:20,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157360915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:15:20,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:15:20,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:15:20,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589813294] [2023-08-27 10:15:20,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:15:20,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:15:20,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:15:20,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:15:20,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:15:20,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 148 [2023-08-27 10:15:20,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 13 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:15:20,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 148 [2023-08-27 10:15:20,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:15:20,814 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2023-08-27 10:15:20,814 INFO L125 PetriNetUnfolderBase]: For 94/96 co-relation queries the response was YES. [2023-08-27 10:15:20,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 26 events. 6/26 cut-off events. For 94/96 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 2 based on Foata normal form. 2/27 useless extension candidates. Maximal degree in co-relation 121. Up to 10 conditions per place. [2023-08-27 10:15:20,814 INFO L140 encePairwiseOnDemand]: 143/148 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2023-08-27 10:15:20,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 17 transitions, 153 flow [2023-08-27 10:15:20,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 10:15:20,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 10:15:20,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 370 transitions. [2023-08-27 10:15:20,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-08-27 10:15:20,816 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 370 transitions. [2023-08-27 10:15:20,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 370 transitions. [2023-08-27 10:15:20,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:15:20,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 370 transitions. [2023-08-27 10:15:20,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 61.666666666666664) internal successors, (370), 6 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 148.0) internal successors, (1036), 7 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,819 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 148.0) internal successors, (1036), 7 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,819 INFO L175 Difference]: Start difference. First operand has 58 places, 13 transitions, 105 flow. Second operand 6 states and 370 transitions. [2023-08-27 10:15:20,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 17 transitions, 153 flow [2023-08-27 10:15:20,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 17 transitions, 85 flow, removed 5 selfloop flow, removed 19 redundant places. [2023-08-27 10:15:20,820 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2023-08-27 10:15:20,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2023-08-27 10:15:20,820 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2023-08-27 10:15:20,821 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2023-08-27 10:15:20,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:15:20,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2023-08-27 10:15:20,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-08-27 10:15:20,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-08-27 10:15:20,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-08-27 10:15:20,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (6 of 11 remaining) [2023-08-27 10:15:20,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 11 remaining) [2023-08-27 10:15:20,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2023-08-27 10:15:20,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-08-27 10:15:20,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-08-27 10:15:20,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-08-27 10:15:20,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-08-27 10:15:20,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 10:15:20,825 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:15:20,829 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 10:15:20,829 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 10:15:20,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:15:20 BasicIcfg [2023-08-27 10:15:20,832 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 10:15:20,833 INFO L158 Benchmark]: Toolchain (without parser) took 5100.25ms. Allocated memory was 369.1MB in the beginning and 453.0MB in the end (delta: 83.9MB). Free memory was 344.0MB in the beginning and 268.2MB in the end (delta: 75.8MB). Peak memory consumption was 160.3MB. Max. memory is 16.0GB. [2023-08-27 10:15:20,833 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 369.1MB. Free memory was 347.1MB in the beginning and 347.0MB in the end (delta: 91.6kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 10:15:20,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 463.68ms. Allocated memory is still 369.1MB. Free memory was 344.0MB in the beginning and 324.0MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 10:15:20,833 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.64ms. Allocated memory is still 369.1MB. Free memory was 324.0MB in the beginning and 321.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:15:20,834 INFO L158 Benchmark]: Boogie Preprocessor took 32.88ms. Allocated memory is still 369.1MB. Free memory was 321.9MB in the beginning and 320.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:15:20,834 INFO L158 Benchmark]: RCFGBuilder took 395.42ms. Allocated memory is still 369.1MB. Free memory was 320.4MB in the beginning and 305.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 10:15:20,834 INFO L158 Benchmark]: TraceAbstraction took 4144.75ms. Allocated memory was 369.1MB in the beginning and 453.0MB in the end (delta: 83.9MB). Free memory was 305.1MB in the beginning and 268.2MB in the end (delta: 36.9MB). Peak memory consumption was 122.5MB. Max. memory is 16.0GB. [2023-08-27 10:15:20,836 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 369.1MB. Free memory was 347.1MB in the beginning and 347.0MB in the end (delta: 91.6kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 463.68ms. Allocated memory is still 369.1MB. Free memory was 344.0MB in the beginning and 324.0MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.64ms. Allocated memory is still 369.1MB. Free memory was 324.0MB in the beginning and 321.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.88ms. Allocated memory is still 369.1MB. Free memory was 321.9MB in the beginning and 320.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 395.42ms. Allocated memory is still 369.1MB. Free memory was 320.4MB in the beginning and 305.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4144.75ms. Allocated memory was 369.1MB in the beginning and 453.0MB in the end (delta: 83.9MB). Free memory was 305.1MB in the beginning and 268.2MB in the end (delta: 36.9MB). Peak memory consumption was 122.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 77 PlacesBefore, 25 PlacesAfterwards, 73 TransitionsBefore, 19 TransitionsAfterwards, 1200 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 3221 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1966, independent: 1844, independent conditional: 0, independent unconditional: 1844, dependent: 122, dependent conditional: 0, dependent unconditional: 122, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 723, independent: 700, independent conditional: 0, independent unconditional: 700, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1966, independent: 1144, independent conditional: 0, independent unconditional: 1144, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 723, unknown conditional: 0, unknown unconditional: 723] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, 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: 728]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 728]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 743]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 743]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 93 locations, 11 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: 4.0s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 160 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 160 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 443 IncrementalHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 16 mSDtfsCounter, 443 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=561occurred in iteration=5, InterpolantAutomatonStates: 46, 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, 0.8s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 280 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 10:15:20,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...