/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 21:28:42,811 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 21:28:42,857 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 21:28:42,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 21:28:42,861 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 21:28:42,892 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 21:28:42,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 21:28:42,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 21:28:42,894 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 21:28:42,894 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 21:28:42,895 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 21:28:42,895 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 21:28:42,895 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 21:28:42,896 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 21:28:42,896 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 21:28:42,896 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 21:28:42,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 21:28:42,897 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 21:28:42,897 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 21:28:42,898 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 21:28:42,898 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 21:28:42,904 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 21:28:42,904 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 21:28:42,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 21:28:42,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 21:28:42,909 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 21:28:42,909 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 21:28:42,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:28:42,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 21:28:42,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 21:28:42,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 21:28:42,912 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 21:28:42,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 21:28:42,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 21:28:42,912 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 21:28:42,913 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 21:28:43,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 21:28:43,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 21:28:43,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 21:28:43,291 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 21:28:43,291 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 21:28:43,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-26 21:28:44,487 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 21:28:44,784 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 21:28:44,785 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-26 21:28:44,797 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a03f8bc04/238af77722c94f1ca3dad3506ebed99b/FLAG8c67ff150 [2023-08-26 21:28:44,809 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a03f8bc04/238af77722c94f1ca3dad3506ebed99b [2023-08-26 21:28:44,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 21:28:44,812 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 21:28:44,813 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 21:28:44,813 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 21:28:44,816 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 21:28:44,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:28:44" (1/1) ... [2023-08-26 21:28:44,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35615c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:44, skipping insertion in model container [2023-08-26 21:28:44,817 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:28:44" (1/1) ... [2023-08-26 21:28:44,860 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 21:28:45,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:28:45,162 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 21:28:45,190 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 21:28:45,191 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 21:28:45,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:28:45,251 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:28:45,251 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:28:45,257 INFO L206 MainTranslator]: Completed translation [2023-08-26 21:28:45,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:45 WrapperNode [2023-08-26 21:28:45,260 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 21:28:45,261 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 21:28:45,261 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 21:28:45,261 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 21:28:45,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:45" (1/1) ... [2023-08-26 21:28:45,297 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:45" (1/1) ... [2023-08-26 21:28:45,321 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2023-08-26 21:28:45,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 21:28:45,322 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 21:28:45,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 21:28:45,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 21:28:45,330 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:45" (1/1) ... [2023-08-26 21:28:45,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:45" (1/1) ... [2023-08-26 21:28:45,347 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:45" (1/1) ... [2023-08-26 21:28:45,348 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:45" (1/1) ... [2023-08-26 21:28:45,352 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:45" (1/1) ... [2023-08-26 21:28:45,353 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:45" (1/1) ... [2023-08-26 21:28:45,355 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:45" (1/1) ... [2023-08-26 21:28:45,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:45" (1/1) ... [2023-08-26 21:28:45,358 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 21:28:45,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 21:28:45,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 21:28:45,359 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 21:28:45,359 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:45" (1/1) ... [2023-08-26 21:28:45,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:28:45,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:28:45,401 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 21:28:45,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 21:28:45,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 21:28:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 21:28:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 21:28:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 21:28:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 21:28:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 21:28:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 21:28:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 21:28:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 21:28:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-26 21:28:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-26 21:28:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 21:28:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 21:28:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 21:28:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 21:28:45,446 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 21:28:45,556 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 21:28:45,558 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 21:28:45,696 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 21:28:45,720 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 21:28:45,720 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 21:28:45,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:28:45 BoogieIcfgContainer [2023-08-26 21:28:45,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 21:28:45,728 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 21:28:45,729 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 21:28:45,731 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 21:28:45,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:28:44" (1/3) ... [2023-08-26 21:28:45,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170b7313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:28:45, skipping insertion in model container [2023-08-26 21:28:45,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:45" (2/3) ... [2023-08-26 21:28:45,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170b7313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:28:45, skipping insertion in model container [2023-08-26 21:28:45,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:28:45" (3/3) ... [2023-08-26 21:28:45,735 INFO L112 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-26 21:28:45,751 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 21:28:45,751 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-26 21:28:45,752 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 21:28:45,834 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:28:45,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 95 transitions, 205 flow [2023-08-26 21:28:45,910 INFO L124 PetriNetUnfolderBase]: 3/92 cut-off events. [2023-08-26 21:28:45,910 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:28:45,915 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 76 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. [2023-08-26 21:28:45,915 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 95 transitions, 205 flow [2023-08-26 21:28:45,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 92 transitions, 193 flow [2023-08-26 21:28:45,922 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:28:45,929 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 92 transitions, 193 flow [2023-08-26 21:28:45,931 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 92 transitions, 193 flow [2023-08-26 21:28:45,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 92 transitions, 193 flow [2023-08-26 21:28:45,959 INFO L124 PetriNetUnfolderBase]: 3/92 cut-off events. [2023-08-26 21:28:45,959 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:28:45,960 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 76 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. [2023-08-26 21:28:45,962 INFO L119 LiptonReduction]: Number of co-enabled transitions 2256 [2023-08-26 21:28:48,175 INFO L134 LiptonReduction]: Checked pairs total: 5938 [2023-08-26 21:28:48,175 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-26 21:28:48,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:28:48,192 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;@bdddceb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:28:48,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-26 21:28:48,194 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:28:48,195 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-26 21:28:48,195 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:28:48,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:48,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 21:28:48,196 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:28:48,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:48,200 INFO L85 PathProgramCache]: Analyzing trace with hash 335334441, now seen corresponding path program 1 times [2023-08-26 21:28:48,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:48,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199357196] [2023-08-26 21:28:48,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:48,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:28:48,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:48,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199357196] [2023-08-26 21:28:48,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199357196] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:48,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:48,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:28:48,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849943674] [2023-08-26 21:28:48,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:48,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:28:48,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:48,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:28:48,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:28:48,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-08-26 21:28:48,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 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) [2023-08-26 21:28:48,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:48,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-08-26 21:28:48,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:48,590 INFO L124 PetriNetUnfolderBase]: 532/887 cut-off events. [2023-08-26 21:28:48,590 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-26 21:28:48,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 887 events. 532/887 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 4709 event pairs, 306 based on Foata normal form. 8/553 useless extension candidates. Maximal degree in co-relation 1793. Up to 843 conditions per place. [2023-08-26 21:28:48,598 INFO L140 encePairwiseOnDemand]: 164/176 looper letters, 28 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-08-26 21:28:48,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 149 flow [2023-08-26 21:28:48,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:28:48,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:28:48,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-08-26 21:28:48,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2023-08-26 21:28:48,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-08-26 21:28:48,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-08-26 21:28:48,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:48,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-08-26 21:28:48,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:48,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:48,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:48,621 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 3 states and 272 transitions. [2023-08-26 21:28:48,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 149 flow [2023-08-26 21:28:48,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 21:28:48,625 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 94 flow [2023-08-26 21:28:48,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-08-26 21:28:48,629 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-26 21:28:48,629 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 94 flow [2023-08-26 21:28:48,630 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) [2023-08-26 21:28:48,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:48,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:48,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 21:28:48,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:28:48,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:48,631 INFO L85 PathProgramCache]: Analyzing trace with hash 632723755, now seen corresponding path program 1 times [2023-08-26 21:28:48,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:48,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111766973] [2023-08-26 21:28:48,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:48,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:28:48,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:48,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111766973] [2023-08-26 21:28:48,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111766973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:48,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:48,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:28:48,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508238944] [2023-08-26 21:28:48,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:48,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:28:48,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:48,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:28:48,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:28:48,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-08-26 21:28:48,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 94 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) [2023-08-26 21:28:48,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:48,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-08-26 21:28:48,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:48,853 INFO L124 PetriNetUnfolderBase]: 327/558 cut-off events. [2023-08-26 21:28:48,853 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-08-26 21:28:48,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 558 events. 327/558 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2576 event pairs, 150 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 1430. Up to 513 conditions per place. [2023-08-26 21:28:48,859 INFO L140 encePairwiseOnDemand]: 169/176 looper letters, 25 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2023-08-26 21:28:48,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 158 flow [2023-08-26 21:28:48,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:28:48,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:28:48,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2023-08-26 21:28:48,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2023-08-26 21:28:48,866 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 340 transitions. [2023-08-26 21:28:48,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 340 transitions. [2023-08-26 21:28:48,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:48,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 340 transitions. [2023-08-26 21:28:48,868 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) [2023-08-26 21:28:48,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:48,872 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:48,872 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 94 flow. Second operand 4 states and 340 transitions. [2023-08-26 21:28:48,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 158 flow [2023-08-26 21:28:48,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:28:48,873 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 86 flow [2023-08-26 21:28:48,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2023-08-26 21:28:48,875 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-08-26 21:28:48,875 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 86 flow [2023-08-26 21:28:48,876 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) [2023-08-26 21:28:48,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:48,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:48,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 21:28:48,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:28:48,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:48,886 INFO L85 PathProgramCache]: Analyzing trace with hash 632561006, now seen corresponding path program 1 times [2023-08-26 21:28:48,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:48,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105210713] [2023-08-26 21:28:48,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:48,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:28:49,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:49,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105210713] [2023-08-26 21:28:49,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105210713] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:49,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:49,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:28:49,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342589548] [2023-08-26 21:28:49,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:49,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:28:49,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:49,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:28:49,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:28:49,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-08-26 21:28:49,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 86 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) [2023-08-26 21:28:49,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:49,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-08-26 21:28:49,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:49,079 INFO L124 PetriNetUnfolderBase]: 92/196 cut-off events. [2023-08-26 21:28:49,079 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-08-26 21:28:49,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 196 events. 92/196 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 687 event pairs, 31 based on Foata normal form. 12/180 useless extension candidates. Maximal degree in co-relation 503. Up to 104 conditions per place. [2023-08-26 21:28:49,080 INFO L140 encePairwiseOnDemand]: 168/176 looper letters, 30 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2023-08-26 21:28:49,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 202 flow [2023-08-26 21:28:49,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:28:49,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:28:49,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 349 transitions. [2023-08-26 21:28:49,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49573863636363635 [2023-08-26 21:28:49,082 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 349 transitions. [2023-08-26 21:28:49,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 349 transitions. [2023-08-26 21:28:49,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:49,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 349 transitions. [2023-08-26 21:28:49,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:49,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:49,085 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:49,085 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 86 flow. Second operand 4 states and 349 transitions. [2023-08-26 21:28:49,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 202 flow [2023-08-26 21:28:49,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:28:49,087 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 127 flow [2023-08-26 21:28:49,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-08-26 21:28:49,087 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-26 21:28:49,088 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 127 flow [2023-08-26 21:28:49,088 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) [2023-08-26 21:28:49,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:49,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:49,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 21:28:49,088 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:28:49,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:49,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1309472272, now seen corresponding path program 1 times [2023-08-26 21:28:49,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:49,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194995736] [2023-08-26 21:28:49,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:49,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:49,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:28:49,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:49,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194995736] [2023-08-26 21:28:49,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194995736] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:49,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:49,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:28:49,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578231626] [2023-08-26 21:28:49,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:49,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:28:49,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:49,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:28:49,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:28:49,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-08-26 21:28:49,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 127 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) [2023-08-26 21:28:49,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:49,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-08-26 21:28:49,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:49,240 INFO L124 PetriNetUnfolderBase]: 56/121 cut-off events. [2023-08-26 21:28:49,240 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-08-26 21:28:49,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 121 events. 56/121 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 357 event pairs, 15 based on Foata normal form. 6/123 useless extension candidates. Maximal degree in co-relation 375. Up to 48 conditions per place. [2023-08-26 21:28:49,241 INFO L140 encePairwiseOnDemand]: 168/176 looper letters, 23 selfloop transitions, 10 changer transitions 1/37 dead transitions. [2023-08-26 21:28:49,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 207 flow [2023-08-26 21:28:49,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:28:49,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:28:49,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2023-08-26 21:28:49,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48068181818181815 [2023-08-26 21:28:49,243 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2023-08-26 21:28:49,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2023-08-26 21:28:49,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:49,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2023-08-26 21:28:49,245 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) [2023-08-26 21:28:49,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:49,247 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:49,247 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 127 flow. Second operand 5 states and 423 transitions. [2023-08-26 21:28:49,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 207 flow [2023-08-26 21:28:49,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 193 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-26 21:28:49,249 INFO L231 Difference]: Finished difference. Result has 36 places, 24 transitions, 121 flow [2023-08-26 21:28:49,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2023-08-26 21:28:49,250 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-26 21:28:49,250 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 121 flow [2023-08-26 21:28:49,250 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) [2023-08-26 21:28:49,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:49,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:49,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 21:28:49,251 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:28:49,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:49,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1587709000, now seen corresponding path program 1 times [2023-08-26 21:28:49,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:49,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765552708] [2023-08-26 21:28:49,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:49,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:28:49,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:49,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765552708] [2023-08-26 21:28:49,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765552708] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:49,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:49,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:28:49,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98172487] [2023-08-26 21:28:49,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:49,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:28:49,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:49,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:28:49,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:28:49,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 176 [2023-08-26 21:28:49,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:49,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:49,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 176 [2023-08-26 21:28:49,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:49,524 INFO L124 PetriNetUnfolderBase]: 133/263 cut-off events. [2023-08-26 21:28:49,524 INFO L125 PetriNetUnfolderBase]: For 362/368 co-relation queries the response was YES. [2023-08-26 21:28:49,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 263 events. 133/263 cut-off events. For 362/368 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1004 event pairs, 66 based on Foata normal form. 1/264 useless extension candidates. Maximal degree in co-relation 828. Up to 153 conditions per place. [2023-08-26 21:28:49,526 INFO L140 encePairwiseOnDemand]: 171/176 looper letters, 29 selfloop transitions, 2 changer transitions 21/53 dead transitions. [2023-08-26 21:28:49,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 53 transitions, 396 flow [2023-08-26 21:28:49,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:28:49,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:28:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 463 transitions. [2023-08-26 21:28:49,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4384469696969697 [2023-08-26 21:28:49,528 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 463 transitions. [2023-08-26 21:28:49,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 463 transitions. [2023-08-26 21:28:49,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:49,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 463 transitions. [2023-08-26 21:28:49,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.16666666666667) internal successors, (463), 6 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:49,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:49,532 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:49,532 INFO L175 Difference]: Start difference. First operand has 36 places, 24 transitions, 121 flow. Second operand 6 states and 463 transitions. [2023-08-26 21:28:49,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 53 transitions, 396 flow [2023-08-26 21:28:49,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 53 transitions, 334 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-26 21:28:49,536 INFO L231 Difference]: Finished difference. Result has 40 places, 24 transitions, 107 flow [2023-08-26 21:28:49,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=107, PETRI_PLACES=40, PETRI_TRANSITIONS=24} [2023-08-26 21:28:49,537 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-08-26 21:28:49,537 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 24 transitions, 107 flow [2023-08-26 21:28:49,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:49,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:49,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:49,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 21:28:49,538 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:28:49,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:49,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1585005092, now seen corresponding path program 2 times [2023-08-26 21:28:49,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:49,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341420729] [2023-08-26 21:28:49,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:49,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:49,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:28:49,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:49,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341420729] [2023-08-26 21:28:49,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341420729] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:49,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:49,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:28:49,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913378007] [2023-08-26 21:28:49,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:49,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:28:49,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:49,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:28:49,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:28:49,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 176 [2023-08-26 21:28:49,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 24 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:49,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:49,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 176 [2023-08-26 21:28:49,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:49,749 INFO L124 PetriNetUnfolderBase]: 80/189 cut-off events. [2023-08-26 21:28:49,749 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2023-08-26 21:28:49,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 189 events. 80/189 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 769 event pairs, 9 based on Foata normal form. 1/189 useless extension candidates. Maximal degree in co-relation 604. Up to 103 conditions per place. [2023-08-26 21:28:49,751 INFO L140 encePairwiseOnDemand]: 172/176 looper letters, 36 selfloop transitions, 2 changer transitions 7/47 dead transitions. [2023-08-26 21:28:49,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 314 flow [2023-08-26 21:28:49,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:28:49,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:28:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 397 transitions. [2023-08-26 21:28:49,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511363636363636 [2023-08-26 21:28:49,753 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 397 transitions. [2023-08-26 21:28:49,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 397 transitions. [2023-08-26 21:28:49,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:49,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 397 transitions. [2023-08-26 21:28:49,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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) [2023-08-26 21:28:49,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:49,756 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:49,756 INFO L175 Difference]: Start difference. First operand has 40 places, 24 transitions, 107 flow. Second operand 5 states and 397 transitions. [2023-08-26 21:28:49,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 314 flow [2023-08-26 21:28:49,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 300 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-26 21:28:49,759 INFO L231 Difference]: Finished difference. Result has 40 places, 25 transitions, 114 flow [2023-08-26 21:28:49,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2023-08-26 21:28:49,760 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-08-26 21:28:49,760 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 114 flow [2023-08-26 21:28:49,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:49,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:49,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:49,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 21:28:49,761 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:28:49,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:49,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1669569230, now seen corresponding path program 3 times [2023-08-26 21:28:49,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:49,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189486439] [2023-08-26 21:28:49,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:49,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:28:49,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:49,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189486439] [2023-08-26 21:28:49,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189486439] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:49,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:49,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:28:49,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362909224] [2023-08-26 21:28:49,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:49,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:28:49,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:49,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:28:49,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:28:49,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 176 [2023-08-26 21:28:49,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:49,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:49,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 176 [2023-08-26 21:28:49,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:49,992 INFO L124 PetriNetUnfolderBase]: 153/305 cut-off events. [2023-08-26 21:28:49,992 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2023-08-26 21:28:49,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1043 conditions, 305 events. 153/305 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1217 event pairs, 51 based on Foata normal form. 1/299 useless extension candidates. Maximal degree in co-relation 1030. Up to 120 conditions per place. [2023-08-26 21:28:49,994 INFO L140 encePairwiseOnDemand]: 172/176 looper letters, 26 selfloop transitions, 1 changer transitions 20/48 dead transitions. [2023-08-26 21:28:49,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 322 flow [2023-08-26 21:28:49,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:28:49,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:28:49,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 388 transitions. [2023-08-26 21:28:49,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2023-08-26 21:28:49,995 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 388 transitions. [2023-08-26 21:28:49,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 388 transitions. [2023-08-26 21:28:49,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:49,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 388 transitions. [2023-08-26 21:28:49,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:49,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:49,998 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:49,998 INFO L175 Difference]: Start difference. First operand has 40 places, 25 transitions, 114 flow. Second operand 5 states and 388 transitions. [2023-08-26 21:28:49,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 322 flow [2023-08-26 21:28:50,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 48 transitions, 318 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 21:28:50,001 INFO L231 Difference]: Finished difference. Result has 44 places, 24 transitions, 114 flow [2023-08-26 21:28:50,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=44, PETRI_TRANSITIONS=24} [2023-08-26 21:28:50,002 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2023-08-26 21:28:50,002 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 24 transitions, 114 flow [2023-08-26 21:28:50,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:50,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:50,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:50,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 21:28:50,003 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:28:50,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:50,003 INFO L85 PathProgramCache]: Analyzing trace with hash -654614988, now seen corresponding path program 4 times [2023-08-26 21:28:50,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:50,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541570166] [2023-08-26 21:28:50,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:50,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:50,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:28:50,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:50,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541570166] [2023-08-26 21:28:50,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541570166] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:50,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:50,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:28:50,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723879876] [2023-08-26 21:28:50,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:50,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 21:28:50,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:50,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 21:28:50,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-26 21:28:50,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2023-08-26 21:28:50,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 24 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:50,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:50,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2023-08-26 21:28:50,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:50,212 INFO L124 PetriNetUnfolderBase]: 113/236 cut-off events. [2023-08-26 21:28:50,212 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2023-08-26 21:28:50,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 236 events. 113/236 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 898 event pairs, 19 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 838. Up to 154 conditions per place. [2023-08-26 21:28:50,213 INFO L140 encePairwiseOnDemand]: 171/176 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2023-08-26 21:28:50,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 287 flow [2023-08-26 21:28:50,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:28:50,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:28:50,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 371 transitions. [2023-08-26 21:28:50,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42159090909090907 [2023-08-26 21:28:50,215 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 371 transitions. [2023-08-26 21:28:50,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 371 transitions. [2023-08-26 21:28:50,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:50,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 371 transitions. [2023-08-26 21:28:50,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:50,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:50,218 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:50,218 INFO L175 Difference]: Start difference. First operand has 44 places, 24 transitions, 114 flow. Second operand 5 states and 371 transitions. [2023-08-26 21:28:50,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 287 flow [2023-08-26 21:28:50,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 282 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-26 21:28:50,220 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-08-26 21:28:50,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-08-26 21:28:50,220 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-08-26 21:28:50,221 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-08-26 21:28:50,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:50,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-26 21:28:50,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-26 21:28:50,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-26 21:28:50,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-26 21:28:50,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-26 21:28:50,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-26 21:28:50,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (9 of 16 remaining) [2023-08-26 21:28:50,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2023-08-26 21:28:50,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 16 remaining) [2023-08-26 21:28:50,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 16 remaining) [2023-08-26 21:28:50,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-26 21:28:50,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-26 21:28:50,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-26 21:28:50,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-26 21:28:50,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-26 21:28:50,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-26 21:28:50,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 21:28:50,226 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2023-08-26 21:28:50,230 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 21:28:50,230 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 21:28:50,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 09:28:50 BasicIcfg [2023-08-26 21:28:50,233 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 21:28:50,233 INFO L158 Benchmark]: Toolchain (without parser) took 5421.03ms. Allocated memory was 379.6MB in the beginning and 480.2MB in the end (delta: 100.7MB). Free memory was 353.9MB in the beginning and 359.9MB in the end (delta: -6.0MB). Peak memory consumption was 96.5MB. Max. memory is 16.0GB. [2023-08-26 21:28:50,233 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 379.6MB. Free memory is still 357.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 21:28:50,234 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.33ms. Allocated memory is still 379.6MB. Free memory was 353.9MB in the beginning and 333.7MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 21:28:50,234 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.43ms. Allocated memory is still 379.6MB. Free memory was 333.7MB in the beginning and 331.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:28:50,234 INFO L158 Benchmark]: Boogie Preprocessor took 35.60ms. Allocated memory is still 379.6MB. Free memory was 331.6MB in the beginning and 330.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:28:50,234 INFO L158 Benchmark]: RCFGBuilder took 367.74ms. Allocated memory is still 379.6MB. Free memory was 330.0MB in the beginning and 314.1MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-26 21:28:50,235 INFO L158 Benchmark]: TraceAbstraction took 4504.51ms. Allocated memory was 379.6MB in the beginning and 480.2MB in the end (delta: 100.7MB). Free memory was 313.3MB in the beginning and 359.9MB in the end (delta: -46.7MB). Peak memory consumption was 56.6MB. Max. memory is 16.0GB. [2023-08-26 21:28:50,236 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 379.6MB. Free memory is still 357.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 447.33ms. Allocated memory is still 379.6MB. Free memory was 353.9MB in the beginning and 333.7MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.43ms. Allocated memory is still 379.6MB. Free memory was 333.7MB in the beginning and 331.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.60ms. Allocated memory is still 379.6MB. Free memory was 331.6MB in the beginning and 330.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 367.74ms. Allocated memory is still 379.6MB. Free memory was 330.0MB in the beginning and 314.1MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 4504.51ms. Allocated memory was 379.6MB in the beginning and 480.2MB in the end (delta: 100.7MB). Free memory was 313.3MB in the beginning and 359.9MB in the end (delta: -46.7MB). Peak memory consumption was 56.6MB. 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: 2.2s, 99 PlacesBefore, 35 PlacesAfterwards, 92 TransitionsBefore, 26 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 81 TotalNumberOfCompositions, 5938 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3040, independent: 2884, independent conditional: 0, independent unconditional: 2884, dependent: 156, dependent conditional: 0, dependent unconditional: 156, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1239, independent: 1197, independent conditional: 0, independent unconditional: 1197, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3040, independent: 1687, independent conditional: 0, independent unconditional: 1687, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 1239, unknown conditional: 0, unknown unconditional: 1239] , Statistics on independence cache: Total cache size (in pairs): 114, Positive cache size: 99, Positive conditional cache size: 0, Positive unconditional cache size: 99, 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: 750]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 750]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 765]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 765]: 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: 4.4s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 95 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 528 IncrementalHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 11 mSDtfsCounter, 528 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=3, InterpolantAutomatonStates: 37, 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, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 342 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2023-08-26 21:28:50,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...