/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/safe034_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 10:20:12,789 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 10:20:12,853 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 10:20:12,857 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 10:20:12,857 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 10:20:12,880 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 10:20:12,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 10:20:12,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 10:20:12,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 10:20:12,883 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 10:20:12,884 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 10:20:12,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 10:20:12,884 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 10:20:12,885 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 10:20:12,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 10:20:12,885 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 10:20:12,885 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 10:20:12,885 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 10:20:12,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 10:20:12,886 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 10:20:12,886 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 10:20:12,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 10:20:12,886 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 10:20:12,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 10:20:12,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 10:20:12,887 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 10:20:12,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 10:20:12,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:20:12,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 10:20:12,888 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 10:20:12,888 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 10:20:12,888 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 10:20:12,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 10:20:12,889 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 10:20:12,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 10:20:12,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 10:20:13,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 10:20:13,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 10:20:13,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 10:20:13,118 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 10:20:13,120 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 10:20:13,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.i [2023-08-27 10:20:14,018 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 10:20:14,219 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 10:20:14,220 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.i [2023-08-27 10:20:14,234 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ddf7934f/180bff18da874ddcb56cd3c4e4cf2b3c/FLAG2dc0828e3 [2023-08-27 10:20:14,245 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ddf7934f/180bff18da874ddcb56cd3c4e4cf2b3c [2023-08-27 10:20:14,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 10:20:14,250 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 10:20:14,252 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 10:20:14,252 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 10:20:14,254 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 10:20:14,255 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:20:14" (1/1) ... [2023-08-27 10:20:14,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157a6d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:14, skipping insertion in model container [2023-08-27 10:20:14,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:20:14" (1/1) ... [2023-08-27 10:20:14,296 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 10:20:14,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:20:14,576 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 10:20:14,602 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:20:14,605 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:20:14,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:20:14,638 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:20:14,638 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:20:14,642 INFO L206 MainTranslator]: Completed translation [2023-08-27 10:20:14,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:14 WrapperNode [2023-08-27 10:20:14,643 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 10:20:14,644 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 10:20:14,644 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 10:20:14,644 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 10:20:14,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:14" (1/1) ... [2023-08-27 10:20:14,673 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:14" (1/1) ... [2023-08-27 10:20:14,691 INFO L138 Inliner]: procedures = 176, calls = 58, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2023-08-27 10:20:14,691 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 10:20:14,692 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 10:20:14,692 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 10:20:14,693 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 10:20:14,698 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:14" (1/1) ... [2023-08-27 10:20:14,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:14" (1/1) ... [2023-08-27 10:20:14,714 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:14" (1/1) ... [2023-08-27 10:20:14,714 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:14" (1/1) ... [2023-08-27 10:20:14,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:14" (1/1) ... [2023-08-27 10:20:14,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:14" (1/1) ... [2023-08-27 10:20:14,719 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:14" (1/1) ... [2023-08-27 10:20:14,720 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:14" (1/1) ... [2023-08-27 10:20:14,721 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 10:20:14,722 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 10:20:14,722 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 10:20:14,722 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 10:20:14,723 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:14" (1/1) ... [2023-08-27 10:20:14,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:20:14,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 10:20:14,753 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 10:20:14,761 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 10:20:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 10:20:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 10:20:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 10:20:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 10:20:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 10:20:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-27 10:20:14,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-27 10:20:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-27 10:20:14,781 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-27 10:20:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-27 10:20:14,781 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-27 10:20:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 10:20:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 10:20:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 10:20:14,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 10:20:14,783 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 10:20:14,875 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 10:20:14,876 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 10:20:15,000 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 10:20:15,016 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 10:20:15,016 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 10:20:15,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:20:15 BoogieIcfgContainer [2023-08-27 10:20:15,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 10:20:15,020 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 10:20:15,020 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 10:20:15,026 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 10:20:15,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:20:14" (1/3) ... [2023-08-27 10:20:15,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394640e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:20:15, skipping insertion in model container [2023-08-27 10:20:15,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:14" (2/3) ... [2023-08-27 10:20:15,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394640e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:20:15, skipping insertion in model container [2023-08-27 10:20:15,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:20:15" (3/3) ... [2023-08-27 10:20:15,029 INFO L112 eAbstractionObserver]: Analyzing ICFG safe034_tso.i [2023-08-27 10:20:15,039 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 10:20:15,040 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-27 10:20:15,040 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 10:20:15,092 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 10:20:15,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 95 transitions, 205 flow [2023-08-27 10:20:15,173 INFO L124 PetriNetUnfolderBase]: 3/92 cut-off events. [2023-08-27 10:20:15,173 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:20:15,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 3/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-27 10:20:15,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 95 transitions, 205 flow [2023-08-27 10:20:15,181 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 92 transitions, 193 flow [2023-08-27 10:20:15,184 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 10:20:15,193 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 92 transitions, 193 flow [2023-08-27 10:20:15,197 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 92 transitions, 193 flow [2023-08-27 10:20:15,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 92 transitions, 193 flow [2023-08-27 10:20:15,223 INFO L124 PetriNetUnfolderBase]: 3/92 cut-off events. [2023-08-27 10:20:15,223 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:20:15,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 3/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-27 10:20:15,226 INFO L119 LiptonReduction]: Number of co-enabled transitions 2256 [2023-08-27 10:20:17,077 INFO L134 LiptonReduction]: Checked pairs total: 7141 [2023-08-27 10:20:17,078 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-27 10:20:17,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 10:20:17,090 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;@170fbcf3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 10:20:17,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-27 10:20:17,093 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 10:20:17,093 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-27 10:20:17,093 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:20:17,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:17,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 10:20:17,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:20:17,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:17,096 INFO L85 PathProgramCache]: Analyzing trace with hash 338105004, now seen corresponding path program 1 times [2023-08-27 10:20:17,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:17,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041900330] [2023-08-27 10:20:17,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:17,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:17,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:17,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041900330] [2023-08-27 10:20:17,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041900330] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:17,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:17,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:20:17,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669790558] [2023-08-27 10:20:17,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:17,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:20:17,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:17,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:20:17,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:20:17,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 181 [2023-08-27 10:20:17,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 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 10:20:17,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:17,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 181 [2023-08-27 10:20:17,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:17,453 INFO L124 PetriNetUnfolderBase]: 496/815 cut-off events. [2023-08-27 10:20:17,453 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-27 10:20:17,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 815 events. 496/815 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 3701 event pairs, 127 based on Foata normal form. 0/515 useless extension candidates. Maximal degree in co-relation 1648. Up to 710 conditions per place. [2023-08-27 10:20:17,465 INFO L140 encePairwiseOnDemand]: 170/181 looper letters, 30 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-08-27 10:20:17,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 157 flow [2023-08-27 10:20:17,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:20:17,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:20:17,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-08-27 10:20:17,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027624309392266 [2023-08-27 10:20:17,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-08-27 10:20:17,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-08-27 10:20:17,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:17,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-08-27 10:20:17,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:17,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:17,481 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:17,482 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 59 flow. Second operand 3 states and 273 transitions. [2023-08-27 10:20:17,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 157 flow [2023-08-27 10:20:17,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 10:20:17,485 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 90 flow [2023-08-27 10:20:17,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2023-08-27 10:20:17,488 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-27 10:20:17,489 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 90 flow [2023-08-27 10:20:17,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 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 10:20:17,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:17,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:17,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 10:20:17,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:20:17,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:17,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1932079704, now seen corresponding path program 1 times [2023-08-27 10:20:17,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:17,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256616348] [2023-08-27 10:20:17,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:17,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:17,679 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 10:20:17,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:17,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256616348] [2023-08-27 10:20:17,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256616348] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:17,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:17,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:20:17,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370068366] [2023-08-27 10:20:17,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:17,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:20:17,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:17,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:20:17,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:20:17,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 181 [2023-08-27 10:20:17,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:17,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:17,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 181 [2023-08-27 10:20:17,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:17,747 INFO L124 PetriNetUnfolderBase]: 473/838 cut-off events. [2023-08-27 10:20:17,747 INFO L125 PetriNetUnfolderBase]: For 111/121 co-relation queries the response was YES. [2023-08-27 10:20:17,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2067 conditions, 838 events. 473/838 cut-off events. For 111/121 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4589 event pairs, 155 based on Foata normal form. 0/660 useless extension candidates. Maximal degree in co-relation 2056. Up to 667 conditions per place. [2023-08-27 10:20:17,751 INFO L140 encePairwiseOnDemand]: 177/181 looper letters, 30 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2023-08-27 10:20:17,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 185 flow [2023-08-27 10:20:17,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:20:17,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:20:17,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-08-27 10:20:17,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880294659300184 [2023-08-27 10:20:17,753 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-08-27 10:20:17,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-08-27 10:20:17,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:17,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-08-27 10:20:17,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:17,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:17,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:17,756 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 90 flow. Second operand 3 states and 265 transitions. [2023-08-27 10:20:17,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 185 flow [2023-08-27 10:20:17,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:20:17,757 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 105 flow [2023-08-27 10:20:17,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-08-27 10:20:17,758 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-08-27 10:20:17,758 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 105 flow [2023-08-27 10:20:17,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:17,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:17,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:17,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 10:20:17,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:20:17,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:17,759 INFO L85 PathProgramCache]: Analyzing trace with hash -235072271, now seen corresponding path program 1 times [2023-08-27 10:20:17,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:17,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946843512] [2023-08-27 10:20:17,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:17,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:17,864 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 10:20:17,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:17,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946843512] [2023-08-27 10:20:17,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946843512] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:17,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:17,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:20:17,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104564578] [2023-08-27 10:20:17,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:17,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:20:17,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:17,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:20:17,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:20:17,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 181 [2023-08-27 10:20:17,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:17,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:17,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 181 [2023-08-27 10:20:17,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:17,990 INFO L124 PetriNetUnfolderBase]: 567/1000 cut-off events. [2023-08-27 10:20:17,991 INFO L125 PetriNetUnfolderBase]: For 282/290 co-relation queries the response was YES. [2023-08-27 10:20:17,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2734 conditions, 1000 events. 567/1000 cut-off events. For 282/290 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 5790 event pairs, 107 based on Foata normal form. 181/844 useless extension candidates. Maximal degree in co-relation 2721. Up to 532 conditions per place. [2023-08-27 10:20:17,995 INFO L140 encePairwiseOnDemand]: 168/181 looper letters, 48 selfloop transitions, 26 changer transitions 0/78 dead transitions. [2023-08-27 10:20:17,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 78 transitions, 432 flow [2023-08-27 10:20:17,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:20:17,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:20:17,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2023-08-27 10:20:17,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895027624309392 [2023-08-27 10:20:17,998 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2023-08-27 10:20:17,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2023-08-27 10:20:17,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:17,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2023-08-27 10:20:18,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,003 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,003 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 105 flow. Second operand 5 states and 443 transitions. [2023-08-27 10:20:18,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 78 transitions, 432 flow [2023-08-27 10:20:18,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 78 transitions, 426 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:20:18,006 INFO L231 Difference]: Finished difference. Result has 43 places, 51 transitions, 338 flow [2023-08-27 10:20:18,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=338, PETRI_PLACES=43, PETRI_TRANSITIONS=51} [2023-08-27 10:20:18,007 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-08-27 10:20:18,007 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 51 transitions, 338 flow [2023-08-27 10:20:18,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:18,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:18,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 10:20:18,010 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:20:18,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:18,011 INFO L85 PathProgramCache]: Analyzing trace with hash 672860414, now seen corresponding path program 1 times [2023-08-27 10:20:18,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:18,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401470863] [2023-08-27 10:20:18,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:18,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:18,057 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 10:20:18,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:18,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401470863] [2023-08-27 10:20:18,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401470863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:18,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:18,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:20:18,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439431444] [2023-08-27 10:20:18,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:18,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:20:18,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:18,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:20:18,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:20:18,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 181 [2023-08-27 10:20:18,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 51 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:18,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 181 [2023-08-27 10:20:18,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:18,132 INFO L124 PetriNetUnfolderBase]: 359/640 cut-off events. [2023-08-27 10:20:18,133 INFO L125 PetriNetUnfolderBase]: For 1213/1229 co-relation queries the response was YES. [2023-08-27 10:20:18,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2569 conditions, 640 events. 359/640 cut-off events. For 1213/1229 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3250 event pairs, 111 based on Foata normal form. 4/633 useless extension candidates. Maximal degree in co-relation 2551. Up to 559 conditions per place. [2023-08-27 10:20:18,136 INFO L140 encePairwiseOnDemand]: 174/181 looper letters, 40 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2023-08-27 10:20:18,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 51 transitions, 390 flow [2023-08-27 10:20:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:20:18,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:20:18,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2023-08-27 10:20:18,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696132596685083 [2023-08-27 10:20:18,138 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 340 transitions. [2023-08-27 10:20:18,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 340 transitions. [2023-08-27 10:20:18,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:18,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 340 transitions. [2023-08-27 10:20:18,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,140 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,140 INFO L175 Difference]: Start difference. First operand has 43 places, 51 transitions, 338 flow. Second operand 4 states and 340 transitions. [2023-08-27 10:20:18,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 51 transitions, 390 flow [2023-08-27 10:20:18,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 390 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 10:20:18,143 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 280 flow [2023-08-27 10:20:18,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-08-27 10:20:18,144 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-08-27 10:20:18,144 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 280 flow [2023-08-27 10:20:18,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:18,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:18,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 10:20:18,144 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:20:18,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:18,145 INFO L85 PathProgramCache]: Analyzing trace with hash 672691155, now seen corresponding path program 1 times [2023-08-27 10:20:18,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:18,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274053110] [2023-08-27 10:20:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:18,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:18,167 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 10:20:18,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:18,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274053110] [2023-08-27 10:20:18,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274053110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:18,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:18,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:20:18,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948960248] [2023-08-27 10:20:18,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:18,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:20:18,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:18,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:20:18,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:20:18,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 181 [2023-08-27 10:20:18,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:18,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 181 [2023-08-27 10:20:18,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:18,225 INFO L124 PetriNetUnfolderBase]: 221/401 cut-off events. [2023-08-27 10:20:18,225 INFO L125 PetriNetUnfolderBase]: For 1008/1024 co-relation queries the response was YES. [2023-08-27 10:20:18,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1553 conditions, 401 events. 221/401 cut-off events. For 1008/1024 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1673 event pairs, 33 based on Foata normal form. 79/471 useless extension candidates. Maximal degree in co-relation 1533. Up to 167 conditions per place. [2023-08-27 10:20:18,227 INFO L140 encePairwiseOnDemand]: 174/181 looper letters, 39 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2023-08-27 10:20:18,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 392 flow [2023-08-27 10:20:18,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:20:18,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:20:18,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 351 transitions. [2023-08-27 10:20:18,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48480662983425415 [2023-08-27 10:20:18,229 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 351 transitions. [2023-08-27 10:20:18,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 351 transitions. [2023-08-27 10:20:18,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:18,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 351 transitions. [2023-08-27 10:20:18,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,231 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,231 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 280 flow. Second operand 4 states and 351 transitions. [2023-08-27 10:20:18,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 392 flow [2023-08-27 10:20:18,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 377 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 10:20:18,233 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 264 flow [2023-08-27 10:20:18,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2023-08-27 10:20:18,234 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2023-08-27 10:20:18,234 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 264 flow [2023-08-27 10:20:18,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:18,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:18,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 10:20:18,234 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:20:18,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:18,235 INFO L85 PathProgramCache]: Analyzing trace with hash 84791407, now seen corresponding path program 1 times [2023-08-27 10:20:18,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:18,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772206536] [2023-08-27 10:20:18,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:18,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:18,374 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 10:20:18,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:18,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772206536] [2023-08-27 10:20:18,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772206536] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:18,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:18,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:20:18,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910993930] [2023-08-27 10:20:18,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:18,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:20:18,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:18,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:20:18,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:20:18,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 181 [2023-08-27 10:20:18,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:18,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 181 [2023-08-27 10:20:18,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:18,477 INFO L124 PetriNetUnfolderBase]: 167/330 cut-off events. [2023-08-27 10:20:18,477 INFO L125 PetriNetUnfolderBase]: For 1040/1056 co-relation queries the response was YES. [2023-08-27 10:20:18,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 330 events. 167/330 cut-off events. For 1040/1056 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1387 event pairs, 19 based on Foata normal form. 63/389 useless extension candidates. Maximal degree in co-relation 1418. Up to 135 conditions per place. [2023-08-27 10:20:18,480 INFO L140 encePairwiseOnDemand]: 171/181 looper letters, 41 selfloop transitions, 25 changer transitions 3/73 dead transitions. [2023-08-27 10:20:18,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 73 transitions, 586 flow [2023-08-27 10:20:18,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 10:20:18,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 10:20:18,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2023-08-27 10:20:18,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46566692975532753 [2023-08-27 10:20:18,482 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2023-08-27 10:20:18,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2023-08-27 10:20:18,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:18,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2023-08-27 10:20:18,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,486 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,486 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 264 flow. Second operand 7 states and 590 transitions. [2023-08-27 10:20:18,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 73 transitions, 586 flow [2023-08-27 10:20:18,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 73 transitions, 548 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-27 10:20:18,490 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 390 flow [2023-08-27 10:20:18,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-08-27 10:20:18,492 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-08-27 10:20:18,492 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 390 flow [2023-08-27 10:20:18,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:18,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:18,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 10:20:18,493 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:20:18,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:18,493 INFO L85 PathProgramCache]: Analyzing trace with hash -809337570, now seen corresponding path program 1 times [2023-08-27 10:20:18,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:18,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970665925] [2023-08-27 10:20:18,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:18,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:18,597 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 10:20:18,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:18,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970665925] [2023-08-27 10:20:18,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970665925] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:18,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:18,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:20:18,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412840634] [2023-08-27 10:20:18,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:18,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:20:18,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:18,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:20:18,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:20:18,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 181 [2023-08-27 10:20:18,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 390 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:18,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 181 [2023-08-27 10:20:18,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:18,752 INFO L124 PetriNetUnfolderBase]: 536/1004 cut-off events. [2023-08-27 10:20:18,752 INFO L125 PetriNetUnfolderBase]: For 4392/4392 co-relation queries the response was YES. [2023-08-27 10:20:18,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4466 conditions, 1004 events. 536/1004 cut-off events. For 4392/4392 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5464 event pairs, 14 based on Foata normal form. 21/1025 useless extension candidates. Maximal degree in co-relation 4443. Up to 401 conditions per place. [2023-08-27 10:20:18,758 INFO L140 encePairwiseOnDemand]: 173/181 looper letters, 136 selfloop transitions, 16 changer transitions 4/156 dead transitions. [2023-08-27 10:20:18,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 156 transitions, 1702 flow [2023-08-27 10:20:18,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 10:20:18,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 10:20:18,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2023-08-27 10:20:18,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46685082872928174 [2023-08-27 10:20:18,760 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2023-08-27 10:20:18,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2023-08-27 10:20:18,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:18,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2023-08-27 10:20:18,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,763 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,763 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 390 flow. Second operand 6 states and 507 transitions. [2023-08-27 10:20:18,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 156 transitions, 1702 flow [2023-08-27 10:20:18,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 156 transitions, 1645 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:20:18,772 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 521 flow [2023-08-27 10:20:18,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=521, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2023-08-27 10:20:18,773 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 25 predicate places. [2023-08-27 10:20:18,773 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 521 flow [2023-08-27 10:20:18,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:18,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:18,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 10:20:18,775 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:20:18,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:18,776 INFO L85 PathProgramCache]: Analyzing trace with hash 156242420, now seen corresponding path program 2 times [2023-08-27 10:20:18,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:18,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160092218] [2023-08-27 10:20:18,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:18,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:18,880 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 10:20:18,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:18,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160092218] [2023-08-27 10:20:18,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160092218] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:18,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:18,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:20:18,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383862112] [2023-08-27 10:20:18,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:18,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:20:18,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:18,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:20:18,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:20:18,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 181 [2023-08-27 10:20:18,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 521 flow. Second operand has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:18,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 181 [2023-08-27 10:20:18,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:18,986 INFO L124 PetriNetUnfolderBase]: 290/618 cut-off events. [2023-08-27 10:20:18,986 INFO L125 PetriNetUnfolderBase]: For 3389/3608 co-relation queries the response was YES. [2023-08-27 10:20:18,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3227 conditions, 618 events. 290/618 cut-off events. For 3389/3608 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3674 event pairs, 15 based on Foata normal form. 173/774 useless extension candidates. Maximal degree in co-relation 3198. Up to 304 conditions per place. [2023-08-27 10:20:18,990 INFO L140 encePairwiseOnDemand]: 174/181 looper letters, 67 selfloop transitions, 20 changer transitions 5/103 dead transitions. [2023-08-27 10:20:18,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 103 transitions, 979 flow [2023-08-27 10:20:18,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 10:20:18,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 10:20:18,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 739 transitions. [2023-08-27 10:20:18,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4536525475751995 [2023-08-27 10:20:18,992 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 739 transitions. [2023-08-27 10:20:18,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 739 transitions. [2023-08-27 10:20:18,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:18,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 739 transitions. [2023-08-27 10:20:18,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.11111111111111) internal successors, (739), 9 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,996 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:18,996 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 521 flow. Second operand 9 states and 739 transitions. [2023-08-27 10:20:18,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 103 transitions, 979 flow [2023-08-27 10:20:19,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 103 transitions, 977 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-27 10:20:19,010 INFO L231 Difference]: Finished difference. Result has 70 places, 56 transitions, 542 flow [2023-08-27 10:20:19,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=542, PETRI_PLACES=70, PETRI_TRANSITIONS=56} [2023-08-27 10:20:19,010 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 36 predicate places. [2023-08-27 10:20:19,010 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 56 transitions, 542 flow [2023-08-27 10:20:19,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:19,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:19,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:19,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 10:20:19,011 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:20:19,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:19,011 INFO L85 PathProgramCache]: Analyzing trace with hash -719426237, now seen corresponding path program 1 times [2023-08-27 10:20:19,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:19,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153341076] [2023-08-27 10:20:19,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:19,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:19,040 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 10:20:19,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:19,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153341076] [2023-08-27 10:20:19,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153341076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:19,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:19,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:20:19,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673145390] [2023-08-27 10:20:19,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:19,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:20:19,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:19,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:20:19,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:20:19,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 181 [2023-08-27 10:20:19,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 56 transitions, 542 flow. Second operand has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:19,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:19,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 181 [2023-08-27 10:20:19,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:19,107 INFO L124 PetriNetUnfolderBase]: 262/544 cut-off events. [2023-08-27 10:20:19,107 INFO L125 PetriNetUnfolderBase]: For 2912/3047 co-relation queries the response was YES. [2023-08-27 10:20:19,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3104 conditions, 544 events. 262/544 cut-off events. For 2912/3047 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3133 event pairs, 37 based on Foata normal form. 71/591 useless extension candidates. Maximal degree in co-relation 3070. Up to 268 conditions per place. [2023-08-27 10:20:19,110 INFO L140 encePairwiseOnDemand]: 174/181 looper letters, 25 selfloop transitions, 14 changer transitions 18/64 dead transitions. [2023-08-27 10:20:19,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 64 transitions, 609 flow [2023-08-27 10:20:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:20:19,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:20:19,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2023-08-27 10:20:19,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46740331491712706 [2023-08-27 10:20:19,111 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2023-08-27 10:20:19,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2023-08-27 10:20:19,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:19,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2023-08-27 10:20:19,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:19,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:19,113 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:19,114 INFO L175 Difference]: Start difference. First operand has 70 places, 56 transitions, 542 flow. Second operand 5 states and 423 transitions. [2023-08-27 10:20:19,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 64 transitions, 609 flow [2023-08-27 10:20:19,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 64 transitions, 489 flow, removed 23 selfloop flow, removed 13 redundant places. [2023-08-27 10:20:19,120 INFO L231 Difference]: Finished difference. Result has 56 places, 36 transitions, 251 flow [2023-08-27 10:20:19,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=251, PETRI_PLACES=56, PETRI_TRANSITIONS=36} [2023-08-27 10:20:19,121 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 22 predicate places. [2023-08-27 10:20:19,121 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 36 transitions, 251 flow [2023-08-27 10:20:19,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:19,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:19,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:19,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 10:20:19,121 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:20:19,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:19,122 INFO L85 PathProgramCache]: Analyzing trace with hash 736372979, now seen corresponding path program 1 times [2023-08-27 10:20:19,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:19,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697218103] [2023-08-27 10:20:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:19,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:19,176 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 10:20:19,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:19,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697218103] [2023-08-27 10:20:19,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697218103] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:19,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:19,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:20:19,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668595363] [2023-08-27 10:20:19,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:19,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:20:19,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:19,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:20:19,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:20:19,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 181 [2023-08-27 10:20:19,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 36 transitions, 251 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:19,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:19,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 181 [2023-08-27 10:20:19,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:19,243 INFO L124 PetriNetUnfolderBase]: 280/602 cut-off events. [2023-08-27 10:20:19,243 INFO L125 PetriNetUnfolderBase]: For 1566/1566 co-relation queries the response was YES. [2023-08-27 10:20:19,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2662 conditions, 602 events. 280/602 cut-off events. For 1566/1566 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3317 event pairs, 68 based on Foata normal form. 1/603 useless extension candidates. Maximal degree in co-relation 2636. Up to 318 conditions per place. [2023-08-27 10:20:19,245 INFO L140 encePairwiseOnDemand]: 176/181 looper letters, 21 selfloop transitions, 3 changer transitions 39/63 dead transitions. [2023-08-27 10:20:19,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 554 flow [2023-08-27 10:20:19,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:20:19,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:20:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2023-08-27 10:20:19,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457182320441989 [2023-08-27 10:20:19,246 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 331 transitions. [2023-08-27 10:20:19,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 331 transitions. [2023-08-27 10:20:19,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:19,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 331 transitions. [2023-08-27 10:20:19,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:19,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:19,248 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:19,248 INFO L175 Difference]: Start difference. First operand has 56 places, 36 transitions, 251 flow. Second operand 4 states and 331 transitions. [2023-08-27 10:20:19,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 554 flow [2023-08-27 10:20:19,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 491 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-27 10:20:19,252 INFO L231 Difference]: Finished difference. Result has 53 places, 23 transitions, 138 flow [2023-08-27 10:20:19,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=53, PETRI_TRANSITIONS=23} [2023-08-27 10:20:19,253 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2023-08-27 10:20:19,253 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 23 transitions, 138 flow [2023-08-27 10:20:19,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:19,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:19,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:19,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 10:20:19,253 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:20:19,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:19,254 INFO L85 PathProgramCache]: Analyzing trace with hash 830066315, now seen corresponding path program 2 times [2023-08-27 10:20:19,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:19,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780865142] [2023-08-27 10:20:19,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:19,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:19,304 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 10:20:19,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:19,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780865142] [2023-08-27 10:20:19,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780865142] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:19,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:19,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:20:19,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132468160] [2023-08-27 10:20:19,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:19,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:20:19,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:19,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:20:19,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:20:19,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 181 [2023-08-27 10:20:19,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 23 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:19,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:19,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 181 [2023-08-27 10:20:19,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:19,326 INFO L124 PetriNetUnfolderBase]: 17/50 cut-off events. [2023-08-27 10:20:19,327 INFO L125 PetriNetUnfolderBase]: For 113/115 co-relation queries the response was YES. [2023-08-27 10:20:19,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 50 events. 17/50 cut-off events. For 113/115 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 104 event pairs, 5 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 197. Up to 23 conditions per place. [2023-08-27 10:20:19,327 INFO L140 encePairwiseOnDemand]: 178/181 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-08-27 10:20:19,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 26 transitions, 194 flow [2023-08-27 10:20:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:20:19,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:20:19,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2023-08-27 10:20:19,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488950276243094 [2023-08-27 10:20:19,328 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 325 transitions. [2023-08-27 10:20:19,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 325 transitions. [2023-08-27 10:20:19,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:19,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 325 transitions. [2023-08-27 10:20:19,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:19,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:19,330 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:19,330 INFO L175 Difference]: Start difference. First operand has 53 places, 23 transitions, 138 flow. Second operand 4 states and 325 transitions. [2023-08-27 10:20:19,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 26 transitions, 194 flow [2023-08-27 10:20:19,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 26 transitions, 171 flow, removed 3 selfloop flow, removed 10 redundant places. [2023-08-27 10:20:19,331 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-08-27 10:20:19,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-08-27 10:20:19,331 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-08-27 10:20:19,331 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-08-27 10:20:19,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:19,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-27 10:20:19,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-27 10:20:19,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-27 10:20:19,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-27 10:20:19,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-27 10:20:19,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-27 10:20:19,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (9 of 16 remaining) [2023-08-27 10:20:19,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2023-08-27 10:20:19,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 16 remaining) [2023-08-27 10:20:19,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 16 remaining) [2023-08-27 10:20:19,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-27 10:20:19,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-27 10:20:19,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-27 10:20:19,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-27 10:20:19,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-27 10:20:19,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-27 10:20:19,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 10:20:19,335 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:19,338 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 10:20:19,338 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 10:20:19,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:20:19 BasicIcfg [2023-08-27 10:20:19,340 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 10:20:19,340 INFO L158 Benchmark]: Toolchain (without parser) took 5090.65ms. Allocated memory was 476.1MB in the beginning and 620.8MB in the end (delta: 144.7MB). Free memory was 430.0MB in the beginning and 532.3MB in the end (delta: -102.3MB). Peak memory consumption was 44.5MB. Max. memory is 16.0GB. [2023-08-27 10:20:19,341 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 476.1MB. Free memory was 454.0MB in the beginning and 453.9MB in the end (delta: 91.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 10:20:19,341 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.65ms. Allocated memory is still 476.1MB. Free memory was 430.0MB in the beginning and 410.1MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 10:20:19,341 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.68ms. Allocated memory is still 476.1MB. Free memory was 410.1MB in the beginning and 408.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:20:19,341 INFO L158 Benchmark]: Boogie Preprocessor took 29.12ms. Allocated memory is still 476.1MB. Free memory was 408.0MB in the beginning and 407.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:20:19,341 INFO L158 Benchmark]: RCFGBuilder took 296.10ms. Allocated memory is still 476.1MB. Free memory was 407.0MB in the beginning and 390.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 10:20:19,341 INFO L158 Benchmark]: TraceAbstraction took 4320.59ms. Allocated memory was 476.1MB in the beginning and 620.8MB in the end (delta: 144.7MB). Free memory was 389.1MB in the beginning and 532.3MB in the end (delta: -143.2MB). Peak memory consumption was 4.7MB. Max. memory is 16.0GB. [2023-08-27 10:20:19,342 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 476.1MB. Free memory was 454.0MB in the beginning and 453.9MB in the end (delta: 91.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 391.65ms. Allocated memory is still 476.1MB. Free memory was 430.0MB in the beginning and 410.1MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.68ms. Allocated memory is still 476.1MB. Free memory was 410.1MB in the beginning and 408.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.12ms. Allocated memory is still 476.1MB. Free memory was 408.0MB in the beginning and 407.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 296.10ms. Allocated memory is still 476.1MB. Free memory was 407.0MB in the beginning and 390.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 4320.59ms. Allocated memory was 476.1MB in the beginning and 620.8MB in the end (delta: 144.7MB). Free memory was 389.1MB in the beginning and 532.3MB in the end (delta: -143.2MB). Peak memory consumption was 4.7MB. 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: 1.9s, 99 PlacesBefore, 34 PlacesAfterwards, 92 TransitionsBefore, 25 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 7 FixpointIterations, 20 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 86 TotalNumberOfCompositions, 7141 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3287, independent: 3067, independent conditional: 0, independent unconditional: 3067, dependent: 220, dependent conditional: 0, dependent unconditional: 220, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1233, independent: 1190, independent conditional: 0, independent unconditional: 1190, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3287, independent: 1877, independent conditional: 0, independent unconditional: 1877, dependent: 177, dependent conditional: 0, dependent unconditional: 177, unknown: 1233, unknown conditional: 0, unknown unconditional: 1233] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 101, Positive conditional cache size: 0, Positive unconditional cache size: 101, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 735]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 735]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 752]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 752]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: 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 7 procedures, 123 locations, 16 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: 4.2s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 231 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 231 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 667 IncrementalHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 22 mSDtfsCounter, 667 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=542occurred in iteration=8, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 393 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 10:20:19,353 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...