/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 -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 23:10:08,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 23:10:08,377 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 [2023-08-23 23:10:08,385 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 23:10:08,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 23:10:08,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 23:10:08,414 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 23:10:08,415 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 23:10:08,415 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 23:10:08,419 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 23:10:08,419 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 23:10:08,419 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 23:10:08,419 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 23:10:08,421 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 23:10:08,421 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 23:10:08,421 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 23:10:08,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 23:10:08,422 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 23:10:08,422 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 23:10:08,422 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 23:10:08,422 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 23:10:08,423 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 23:10:08,423 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 23:10:08,423 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 23:10:08,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 23:10:08,424 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 23:10:08,424 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 23:10:08,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:10:08,425 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 23:10:08,425 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 23:10:08,426 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 23:10:08,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 23:10:08,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 23:10:08,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 23:10:08,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 23:10:08,427 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 23:10:08,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 23:10:08,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 23:10:08,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 23:10:08,756 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 23:10:08,758 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 23:10:08,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-23 23:10:10,034 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 23:10:10,290 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 23:10:10,291 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-23 23:10:10,311 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c55dd3c17/70708828a0304600b271a973acf35255/FLAGb39740474 [2023-08-23 23:10:10,328 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c55dd3c17/70708828a0304600b271a973acf35255 [2023-08-23 23:10:10,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 23:10:10,334 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 23:10:10,336 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 23:10:10,337 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 23:10:10,339 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 23:10:10,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:10:10" (1/1) ... [2023-08-23 23:10:10,342 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a57a2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:10, skipping insertion in model container [2023-08-23 23:10:10,342 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:10:10" (1/1) ... [2023-08-23 23:10:10,394 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 23:10:10,569 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-23 23:10:10,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:10:10,741 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 23:10:10,756 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-23 23:10:10,776 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:10:10,778 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:10:10,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:10:10,823 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:10:10,823 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:10:10,829 INFO L206 MainTranslator]: Completed translation [2023-08-23 23:10:10,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:10 WrapperNode [2023-08-23 23:10:10,830 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 23:10:10,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 23:10:10,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 23:10:10,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 23:10:10,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:10" (1/1) ... [2023-08-23 23:10:10,850 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:10" (1/1) ... [2023-08-23 23:10:10,865 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-23 23:10:10,876 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 23:10:10,886 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 23:10:10,886 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 23:10:10,886 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 23:10:10,892 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:10" (1/1) ... [2023-08-23 23:10:10,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:10" (1/1) ... [2023-08-23 23:10:10,895 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:10" (1/1) ... [2023-08-23 23:10:10,895 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:10" (1/1) ... [2023-08-23 23:10:10,900 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:10" (1/1) ... [2023-08-23 23:10:10,901 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:10" (1/1) ... [2023-08-23 23:10:10,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:10" (1/1) ... [2023-08-23 23:10:10,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:10" (1/1) ... [2023-08-23 23:10:10,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 23:10:10,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 23:10:10,913 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 23:10:10,913 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 23:10:10,914 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:10" (1/1) ... [2023-08-23 23:10:10,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:10:10,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 23:10:10,950 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) [2023-08-23 23:10:10,979 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 [2023-08-23 23:10:10,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 23:10:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-23 23:10:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 23:10:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 23:10:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 23:10:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-23 23:10:10,997 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-23 23:10:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-23 23:10:10,997 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-23 23:10:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-23 23:10:10,997 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-23 23:10:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 23:10:10,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-23 23:10:10,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 23:10:10,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 23:10:11,000 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-23 23:10:11,127 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 23:10:11,129 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 23:10:11,242 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 23:10:11,248 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 23:10:11,248 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-23 23:10:11,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:10:11 BoogieIcfgContainer [2023-08-23 23:10:11,250 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 23:10:11,252 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 23:10:11,252 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 23:10:11,255 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 23:10:11,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 11:10:10" (1/3) ... [2023-08-23 23:10:11,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306d6e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:10:11, skipping insertion in model container [2023-08-23 23:10:11,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:10:10" (2/3) ... [2023-08-23 23:10:11,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306d6e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:10:11, skipping insertion in model container [2023-08-23 23:10:11,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:10:11" (3/3) ... [2023-08-23 23:10:11,257 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-23 23:10:11,272 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 23:10:11,272 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-23 23:10:11,272 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 23:10:11,322 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-23 23:10:11,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-08-23 23:10:11,392 INFO L124 PetriNetUnfolderBase]: 2/81 cut-off events. [2023-08-23 23:10:11,393 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:10:11,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-08-23 23:10:11,401 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-08-23 23:10:11,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-08-23 23:10:11,407 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 23:10:11,425 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-08-23 23:10:11,433 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-08-23 23:10:11,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-08-23 23:10:11,457 INFO L124 PetriNetUnfolderBase]: 1/69 cut-off events. [2023-08-23 23:10:11,458 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:10:11,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 34 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-23 23:10:11,459 INFO L119 LiptonReduction]: Number of co-enabled transitions 974 [2023-08-23 23:10:13,332 INFO L134 LiptonReduction]: Checked pairs total: 1620 [2023-08-23 23:10:13,333 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-08-23 23:10:13,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 23:10:13,360 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;@30abe675, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 23:10:13,360 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-23 23:10:13,372 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 23:10:13,372 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-23 23:10:13,372 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:10:13,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:10:13,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:10:13,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:10:13,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:10:13,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1744931790, now seen corresponding path program 1 times [2023-08-23 23:10:13,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:10:13,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380956759] [2023-08-23 23:10:13,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:10:13,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:10:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:10:13,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:10:13,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:10:13,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380956759] [2023-08-23 23:10:13,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380956759] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:10:13,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:10:13,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-23 23:10:13,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719198630] [2023-08-23 23:10:13,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:10:13,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:10:13,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:10:13,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:10:13,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:10:13,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2023-08-23 23:10:13,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2023-08-23 23:10:13,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:10:13,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2023-08-23 23:10:13,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:10:13,988 INFO L124 PetriNetUnfolderBase]: 222/384 cut-off events. [2023-08-23 23:10:13,989 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-23 23:10:13,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 384 events. 222/384 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1491 event pairs, 69 based on Foata normal form. 3/387 useless extension candidates. Maximal degree in co-relation 772. Up to 340 conditions per place. [2023-08-23 23:10:13,997 INFO L140 encePairwiseOnDemand]: 136/140 looper letters, 21 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2023-08-23 23:10:13,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 25 transitions, 113 flow [2023-08-23 23:10:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:10:14,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:10:14,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2023-08-23 23:10:14,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2023-08-23 23:10:14,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2023-08-23 23:10:14,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2023-08-23 23:10:14,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:10:14,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2023-08-23 23:10:14,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2023-08-23 23:10:14,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-08-23 23:10:14,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-08-23 23:10:14,030 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 41 flow. Second operand 3 states and 238 transitions. [2023-08-23 23:10:14,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 25 transitions, 113 flow [2023-08-23 23:10:14,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 108 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-23 23:10:14,034 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 57 flow [2023-08-23 23:10:14,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-23 23:10:14,039 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-08-23 23:10:14,039 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 57 flow [2023-08-23 23:10:14,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2023-08-23 23:10:14,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:10:14,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:10:14,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 23:10:14,041 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:10:14,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:10:14,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1741688772, now seen corresponding path program 1 times [2023-08-23 23:10:14,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:10:14,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056695383] [2023-08-23 23:10:14,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:10:14,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:10:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:10:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:10:14,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:10:14,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056695383] [2023-08-23 23:10:14,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056695383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:10:14,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:10:14,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:10:14,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43957981] [2023-08-23 23:10:14,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:10:14,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:10:14,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:10:14,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:10:14,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:10:14,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2023-08-23 23:10:14,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2023-08-23 23:10:14,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:10:14,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2023-08-23 23:10:14,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:10:14,346 INFO L124 PetriNetUnfolderBase]: 201/354 cut-off events. [2023-08-23 23:10:14,347 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-08-23 23:10:14,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 354 events. 201/354 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1295 event pairs, 75 based on Foata normal form. 9/363 useless extension candidates. Maximal degree in co-relation 812. Up to 211 conditions per place. [2023-08-23 23:10:14,352 INFO L140 encePairwiseOnDemand]: 137/140 looper letters, 19 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2023-08-23 23:10:14,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 111 flow [2023-08-23 23:10:14,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:10:14,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:10:14,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-08-23 23:10:14,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2023-08-23 23:10:14,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-08-23 23:10:14,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-08-23 23:10:14,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:10:14,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-08-23 23:10:14,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-08-23 23:10:14,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-08-23 23:10:14,362 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-08-23 23:10:14,362 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 57 flow. Second operand 3 states and 235 transitions. [2023-08-23 23:10:14,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 111 flow [2023-08-23 23:10:14,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:10:14,364 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 65 flow [2023-08-23 23:10:14,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-08-23 23:10:14,365 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-08-23 23:10:14,367 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 65 flow [2023-08-23 23:10:14,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2023-08-23 23:10:14,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:10:14,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:10:14,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-23 23:10:14,374 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:10:14,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:10:14,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1741688090, now seen corresponding path program 1 times [2023-08-23 23:10:14,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:10:14,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006367638] [2023-08-23 23:10:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:10:14,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:10:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:10:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:10:14,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:10:14,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006367638] [2023-08-23 23:10:14,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006367638] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:10:14,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:10:14,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:10:14,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189756431] [2023-08-23 23:10:14,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:10:14,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:10:14,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:10:14,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:10:14,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:10:14,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2023-08-23 23:10:14,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2023-08-23 23:10:14,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:10:14,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2023-08-23 23:10:14,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:10:14,643 INFO L124 PetriNetUnfolderBase]: 188/335 cut-off events. [2023-08-23 23:10:14,643 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2023-08-23 23:10:14,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 335 events. 188/335 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1294 event pairs, 65 based on Foata normal form. 6/341 useless extension candidates. Maximal degree in co-relation 808. Up to 265 conditions per place. [2023-08-23 23:10:14,646 INFO L140 encePairwiseOnDemand]: 137/140 looper letters, 22 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-08-23 23:10:14,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 135 flow [2023-08-23 23:10:14,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:10:14,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:10:14,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2023-08-23 23:10:14,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2023-08-23 23:10:14,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2023-08-23 23:10:14,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2023-08-23 23:10:14,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:10:14,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2023-08-23 23:10:14,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2023-08-23 23:10:14,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-08-23 23:10:14,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-08-23 23:10:14,652 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 65 flow. Second operand 3 states and 238 transitions. [2023-08-23 23:10:14,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 135 flow [2023-08-23 23:10:14,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 129 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 23:10:14,654 INFO L231 Difference]: Finished difference. Result has 29 places, 18 transitions, 70 flow [2023-08-23 23:10:14,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=18} [2023-08-23 23:10:14,655 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-23 23:10:14,658 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 70 flow [2023-08-23 23:10:14,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2023-08-23 23:10:14,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:10:14,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:10:14,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-23 23:10:14,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:10:14,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:10:14,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1842224184, now seen corresponding path program 1 times [2023-08-23 23:10:14,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:10:14,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496527764] [2023-08-23 23:10:14,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:10:14,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:10:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:10:14,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:10:14,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:10:14,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496527764] [2023-08-23 23:10:14,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496527764] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:10:14,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:10:14,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:10:14,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986746530] [2023-08-23 23:10:14,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:10:14,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:10:14,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:10:14,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:10:14,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:10:14,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2023-08-23 23:10:14,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 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) [2023-08-23 23:10:14,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:10:14,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2023-08-23 23:10:14,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:10:14,885 INFO L124 PetriNetUnfolderBase]: 282/465 cut-off events. [2023-08-23 23:10:14,886 INFO L125 PetriNetUnfolderBase]: For 289/289 co-relation queries the response was YES. [2023-08-23 23:10:14,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1170 conditions, 465 events. 282/465 cut-off events. For 289/289 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1610 event pairs, 115 based on Foata normal form. 27/492 useless extension candidates. Maximal degree in co-relation 1156. Up to 190 conditions per place. [2023-08-23 23:10:14,889 INFO L140 encePairwiseOnDemand]: 136/140 looper letters, 20 selfloop transitions, 3 changer transitions 7/30 dead transitions. [2023-08-23 23:10:14,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 159 flow [2023-08-23 23:10:14,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:10:14,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:10:14,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2023-08-23 23:10:14,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464285714285714 [2023-08-23 23:10:14,890 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 306 transitions. [2023-08-23 23:10:14,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 306 transitions. [2023-08-23 23:10:14,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:10:14,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 306 transitions. [2023-08-23 23:10:14,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 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) [2023-08-23 23:10:14,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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) [2023-08-23 23:10:14,893 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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) [2023-08-23 23:10:14,893 INFO L175 Difference]: Start difference. First operand has 29 places, 18 transitions, 70 flow. Second operand 4 states and 306 transitions. [2023-08-23 23:10:14,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 159 flow [2023-08-23 23:10:14,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 151 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 23:10:14,895 INFO L231 Difference]: Finished difference. Result has 32 places, 16 transitions, 68 flow [2023-08-23 23:10:14,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=32, PETRI_TRANSITIONS=16} [2023-08-23 23:10:14,897 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-08-23 23:10:14,897 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 16 transitions, 68 flow [2023-08-23 23:10:14,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 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) [2023-08-23 23:10:14,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:10:14,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:10:14,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-23 23:10:14,898 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:10:14,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:10:14,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1275045259, now seen corresponding path program 1 times [2023-08-23 23:10:14,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:10:14,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169468524] [2023-08-23 23:10:14,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:10:14,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:10:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:10:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:10:15,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:10:15,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169468524] [2023-08-23 23:10:15,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169468524] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:10:15,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:10:15,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:10:15,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82503005] [2023-08-23 23:10:15,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:10:15,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:10:15,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:10:15,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:10:15,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:10:15,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2023-08-23 23:10:15,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 16 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 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) [2023-08-23 23:10:15,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:10:15,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2023-08-23 23:10:15,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:10:15,083 INFO L124 PetriNetUnfolderBase]: 140/253 cut-off events. [2023-08-23 23:10:15,084 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2023-08-23 23:10:15,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 253 events. 140/253 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 930 event pairs, 40 based on Foata normal form. 18/271 useless extension candidates. Maximal degree in co-relation 668. Up to 109 conditions per place. [2023-08-23 23:10:15,085 INFO L140 encePairwiseOnDemand]: 136/140 looper letters, 17 selfloop transitions, 3 changer transitions 9/30 dead transitions. [2023-08-23 23:10:15,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 171 flow [2023-08-23 23:10:15,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:10:15,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:10:15,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2023-08-23 23:10:15,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482142857142858 [2023-08-23 23:10:15,087 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 307 transitions. [2023-08-23 23:10:15,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 307 transitions. [2023-08-23 23:10:15,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:10:15,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 307 transitions. [2023-08-23 23:10:15,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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) [2023-08-23 23:10:15,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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) [2023-08-23 23:10:15,089 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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) [2023-08-23 23:10:15,090 INFO L175 Difference]: Start difference. First operand has 32 places, 16 transitions, 68 flow. Second operand 4 states and 307 transitions. [2023-08-23 23:10:15,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 171 flow [2023-08-23 23:10:15,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 132 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-08-23 23:10:15,094 INFO L231 Difference]: Finished difference. Result has 29 places, 16 transitions, 56 flow [2023-08-23 23:10:15,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=56, PETRI_PLACES=29, PETRI_TRANSITIONS=16} [2023-08-23 23:10:15,096 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-23 23:10:15,096 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 16 transitions, 56 flow [2023-08-23 23:10:15,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 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) [2023-08-23 23:10:15,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:10:15,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:10:15,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-23 23:10:15,097 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:10:15,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:10:15,098 INFO L85 PathProgramCache]: Analyzing trace with hash -851892702, now seen corresponding path program 1 times [2023-08-23 23:10:15,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:10:15,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691562453] [2023-08-23 23:10:15,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:10:15,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:10:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:10:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:10:15,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:10:15,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691562453] [2023-08-23 23:10:15,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691562453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:10:15,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:10:15,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:10:15,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189790645] [2023-08-23 23:10:15,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:10:15,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:10:15,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:10:15,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:10:15,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:10:15,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2023-08-23 23:10:15,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 16 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:15,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:10:15,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2023-08-23 23:10:15,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:10:15,259 INFO L124 PetriNetUnfolderBase]: 51/117 cut-off events. [2023-08-23 23:10:15,259 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-08-23 23:10:15,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 117 events. 51/117 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 370 event pairs, 19 based on Foata normal form. 8/124 useless extension candidates. Maximal degree in co-relation 280. Up to 68 conditions per place. [2023-08-23 23:10:15,260 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 17 selfloop transitions, 4 changer transitions 12/35 dead transitions. [2023-08-23 23:10:15,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 35 transitions, 178 flow [2023-08-23 23:10:15,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:10:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:10:15,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2023-08-23 23:10:15,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2023-08-23 23:10:15,262 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 390 transitions. [2023-08-23 23:10:15,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 390 transitions. [2023-08-23 23:10:15,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:10:15,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 390 transitions. [2023-08-23 23:10:15,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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) [2023-08-23 23:10:15,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 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) [2023-08-23 23:10:15,264 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 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) [2023-08-23 23:10:15,265 INFO L175 Difference]: Start difference. First operand has 29 places, 16 transitions, 56 flow. Second operand 5 states and 390 transitions. [2023-08-23 23:10:15,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 35 transitions, 178 flow [2023-08-23 23:10:15,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 157 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-23 23:10:15,266 INFO L231 Difference]: Finished difference. Result has 32 places, 19 transitions, 80 flow [2023-08-23 23:10:15,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=19} [2023-08-23 23:10:15,267 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-08-23 23:10:15,267 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 19 transitions, 80 flow [2023-08-23 23:10:15,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:15,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:10:15,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:10:15,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-23 23:10:15,268 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:10:15,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:10:15,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1952189162, now seen corresponding path program 1 times [2023-08-23 23:10:15,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:10:15,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613433212] [2023-08-23 23:10:15,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:10:15,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:10:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:10:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:10:15,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:10:15,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613433212] [2023-08-23 23:10:15,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613433212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:10:15,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:10:15,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:10:15,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708593415] [2023-08-23 23:10:15,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:10:15,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:10:15,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:10:15,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:10:15,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:10:15,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2023-08-23 23:10:15,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 19 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 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) [2023-08-23 23:10:15,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:10:15,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2023-08-23 23:10:15,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:10:15,429 INFO L124 PetriNetUnfolderBase]: 31/79 cut-off events. [2023-08-23 23:10:15,429 INFO L125 PetriNetUnfolderBase]: For 83/96 co-relation queries the response was YES. [2023-08-23 23:10:15,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 79 events. 31/79 cut-off events. For 83/96 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 205 event pairs, 4 based on Foata normal form. 9/88 useless extension candidates. Maximal degree in co-relation 265. Up to 48 conditions per place. [2023-08-23 23:10:15,430 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 18 selfloop transitions, 7 changer transitions 10/37 dead transitions. [2023-08-23 23:10:15,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 232 flow [2023-08-23 23:10:15,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-23 23:10:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-23 23:10:15,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 463 transitions. [2023-08-23 23:10:15,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5511904761904762 [2023-08-23 23:10:15,432 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 463 transitions. [2023-08-23 23:10:15,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 463 transitions. [2023-08-23 23:10:15,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:10:15,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 463 transitions. [2023-08-23 23:10:15,434 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) [2023-08-23 23:10:15,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 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) [2023-08-23 23:10:15,436 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 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) [2023-08-23 23:10:15,436 INFO L175 Difference]: Start difference. First operand has 32 places, 19 transitions, 80 flow. Second operand 6 states and 463 transitions. [2023-08-23 23:10:15,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 232 flow [2023-08-23 23:10:15,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 226 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-23 23:10:15,439 INFO L231 Difference]: Finished difference. Result has 36 places, 22 transitions, 130 flow [2023-08-23 23:10:15,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2023-08-23 23:10:15,440 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-08-23 23:10:15,440 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 130 flow [2023-08-23 23:10:15,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 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) [2023-08-23 23:10:15,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:10:15,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:10:15,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-23 23:10:15,441 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:10:15,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:10:15,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1634633047, now seen corresponding path program 1 times [2023-08-23 23:10:15,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:10:15,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701482995] [2023-08-23 23:10:15,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:10:15,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:10:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:10:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:10:15,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:10:15,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701482995] [2023-08-23 23:10:15,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701482995] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:10:15,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:10:15,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:10:15,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927348311] [2023-08-23 23:10:15,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:10:15,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-23 23:10:15,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:10:15,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-23 23:10:15,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-23 23:10:15,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2023-08-23 23:10:15,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2023-08-23 23:10:15,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:10:15,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2023-08-23 23:10:15,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:10:15,606 INFO L124 PetriNetUnfolderBase]: 17/52 cut-off events. [2023-08-23 23:10:15,607 INFO L125 PetriNetUnfolderBase]: For 142/156 co-relation queries the response was YES. [2023-08-23 23:10:15,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 52 events. 17/52 cut-off events. For 142/156 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 95 event pairs, 2 based on Foata normal form. 10/62 useless extension candidates. Maximal degree in co-relation 200. Up to 28 conditions per place. [2023-08-23 23:10:15,607 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 15 selfloop transitions, 10 changer transitions 5/32 dead transitions. [2023-08-23 23:10:15,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 244 flow [2023-08-23 23:10:15,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:10:15,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:10:15,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 529 transitions. [2023-08-23 23:10:15,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.539795918367347 [2023-08-23 23:10:15,609 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 529 transitions. [2023-08-23 23:10:15,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 529 transitions. [2023-08-23 23:10:15,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:10:15,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 529 transitions. [2023-08-23 23:10:15,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 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) [2023-08-23 23:10:15,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 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) [2023-08-23 23:10:15,613 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 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) [2023-08-23 23:10:15,613 INFO L175 Difference]: Start difference. First operand has 36 places, 22 transitions, 130 flow. Second operand 7 states and 529 transitions. [2023-08-23 23:10:15,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 244 flow [2023-08-23 23:10:15,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 208 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-08-23 23:10:15,614 INFO L231 Difference]: Finished difference. Result has 39 places, 22 transitions, 132 flow [2023-08-23 23:10:15,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=132, PETRI_PLACES=39, PETRI_TRANSITIONS=22} [2023-08-23 23:10:15,615 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2023-08-23 23:10:15,615 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 22 transitions, 132 flow [2023-08-23 23:10:15,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2023-08-23 23:10:15,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:10:15,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:10:15,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-23 23:10:15,616 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:10:15,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:10:15,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1077554796, now seen corresponding path program 1 times [2023-08-23 23:10:15,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:10:15,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028672828] [2023-08-23 23:10:15,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:10:15,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:10:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:10:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:10:15,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:10:15,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028672828] [2023-08-23 23:10:15,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028672828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:10:15,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:10:15,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:10:15,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825733380] [2023-08-23 23:10:15,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:10:15,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:10:15,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:10:15,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:10:15,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:10:15,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2023-08-23 23:10:15,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 22 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:15,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:10:15,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2023-08-23 23:10:15,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:10:15,749 INFO L124 PetriNetUnfolderBase]: 18/49 cut-off events. [2023-08-23 23:10:15,749 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2023-08-23 23:10:15,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 49 events. 18/49 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 3 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 184. Up to 27 conditions per place. [2023-08-23 23:10:15,750 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2023-08-23 23:10:15,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 27 transitions, 210 flow [2023-08-23 23:10:15,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:10:15,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:10:15,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 364 transitions. [2023-08-23 23:10:15,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-08-23 23:10:15,751 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 364 transitions. [2023-08-23 23:10:15,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 364 transitions. [2023-08-23 23:10:15,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:10:15,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 364 transitions. [2023-08-23 23:10:15,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 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) [2023-08-23 23:10:15,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 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) [2023-08-23 23:10:15,754 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 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) [2023-08-23 23:10:15,754 INFO L175 Difference]: Start difference. First operand has 39 places, 22 transitions, 132 flow. Second operand 5 states and 364 transitions. [2023-08-23 23:10:15,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 27 transitions, 210 flow [2023-08-23 23:10:15,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 170 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-23 23:10:15,755 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2023-08-23 23:10:15,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2023-08-23 23:10:15,756 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2023-08-23 23:10:15,756 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2023-08-23 23:10:15,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:10:15,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-23 23:10:15,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-23 23:10:15,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-23 23:10:15,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-23 23:10:15,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-23 23:10:15,760 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:10:15,762 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-23 23:10:15,762 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-23 23:10:15,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.08 11:10:15 BasicIcfg [2023-08-23 23:10:15,765 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-23 23:10:15,765 INFO L158 Benchmark]: Toolchain (without parser) took 5431.37ms. Allocated memory was 352.3MB in the beginning and 438.3MB in the end (delta: 86.0MB). Free memory was 306.4MB in the beginning and 398.8MB in the end (delta: -92.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:10:15,765 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 352.3MB. Free memory was 328.8MB in the beginning and 328.7MB in the end (delta: 87.1kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:10:15,766 INFO L158 Benchmark]: CACSL2BoogieTranslator took 494.05ms. Allocated memory is still 352.3MB. Free memory was 306.4MB in the beginning and 286.0MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-23 23:10:15,766 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.52ms. Allocated memory is still 352.3MB. Free memory was 286.0MB in the beginning and 330.5MB in the end (delta: -44.6MB). Peak memory consumption was 7.0MB. Max. memory is 16.0GB. [2023-08-23 23:10:15,766 INFO L158 Benchmark]: Boogie Preprocessor took 26.39ms. Allocated memory is still 352.3MB. Free memory was 330.5MB in the beginning and 329.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:10:15,766 INFO L158 Benchmark]: RCFGBuilder took 337.69ms. Allocated memory is still 352.3MB. Free memory was 329.5MB in the beginning and 315.5MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-23 23:10:15,767 INFO L158 Benchmark]: TraceAbstraction took 4512.82ms. Allocated memory was 352.3MB in the beginning and 438.3MB in the end (delta: 86.0MB). Free memory was 314.8MB in the beginning and 398.8MB in the end (delta: -84.0MB). Peak memory consumption was 2.0MB. Max. memory is 16.0GB. [2023-08-23 23:10:15,768 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 352.3MB. Free memory was 328.8MB in the beginning and 328.7MB in the end (delta: 87.1kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 494.05ms. Allocated memory is still 352.3MB. Free memory was 306.4MB in the beginning and 286.0MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.52ms. Allocated memory is still 352.3MB. Free memory was 286.0MB in the beginning and 330.5MB in the end (delta: -44.6MB). Peak memory consumption was 7.0MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.39ms. Allocated memory is still 352.3MB. Free memory was 330.5MB in the beginning and 329.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 337.69ms. Allocated memory is still 352.3MB. Free memory was 329.5MB in the beginning and 315.5MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4512.82ms. Allocated memory was 352.3MB in the beginning and 438.3MB in the end (delta: 86.0MB). Free memory was 314.8MB in the beginning and 398.8MB in the end (delta: -84.0MB). Peak memory consumption was 2.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 78 PlacesBefore, 26 PlacesAfterwards, 69 TransitionsBefore, 16 TransitionsAfterwards, 974 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 1620 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 924, independent: 858, independent conditional: 0, independent unconditional: 858, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 534, independent: 512, independent conditional: 0, independent unconditional: 512, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 924, independent: 346, independent conditional: 0, independent unconditional: 346, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 534, unknown conditional: 0, unknown unconditional: 534] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 locations, 4 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: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 121 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 121 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 364 IncrementalHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 5 mSDtfsCounter, 364 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=8, InterpolantAutomatonStates: 40, 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, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 411 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-23 23:10:15,789 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...