/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/mix040_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 23:03:57,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 23:03:57,308 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 23:03:57,314 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 23:03:57,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 23:03:57,350 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 23:03:57,351 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 23:03:57,355 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 23:03:57,356 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 23:03:57,359 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 23:03:57,359 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 23:03:57,359 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 23:03:57,360 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 23:03:57,360 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 23:03:57,360 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 23:03:57,361 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 23:03:57,361 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 23:03:57,361 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 23:03:57,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 23:03:57,361 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 23:03:57,362 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 23:03:57,363 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 23:03:57,363 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 23:03:57,364 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 23:03:57,364 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 23:03:57,364 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 23:03:57,364 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 23:03:57,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:03:57,365 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 23:03:57,365 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 23:03:57,366 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 23:03:57,366 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 23:03:57,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 23:03:57,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 23:03:57,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 23:03:57,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 23:03:57,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 23:03:57,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 23:03:57,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 23:03:57,688 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 23:03:57,688 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 23:03:57,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix040_tso.oepc.i [2023-08-23 23:03:58,877 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 23:03:59,128 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 23:03:59,129 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix040_tso.oepc.i [2023-08-23 23:03:59,145 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87d5e0486/f069465ac327463189b626a0806ecb00/FLAGf0fa1580e [2023-08-23 23:03:59,157 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87d5e0486/f069465ac327463189b626a0806ecb00 [2023-08-23 23:03:59,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 23:03:59,163 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 23:03:59,166 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 23:03:59,166 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 23:03:59,168 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 23:03:59,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:03:59" (1/1) ... [2023-08-23 23:03:59,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c82067d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:03:59, skipping insertion in model container [2023-08-23 23:03:59,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:03:59" (1/1) ... [2023-08-23 23:03:59,233 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 23:03:59,393 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/mix040_tso.oepc.i[949,962] [2023-08-23 23:03:59,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:03:59,613 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 23:03:59,623 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/mix040_tso.oepc.i[949,962] [2023-08-23 23:03:59,638 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:03:59,639 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:03:59,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:03:59,711 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:03:59,712 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:03:59,716 INFO L206 MainTranslator]: Completed translation [2023-08-23 23:03:59,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:03:59 WrapperNode [2023-08-23 23:03:59,717 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 23:03:59,718 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 23:03:59,718 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 23:03:59,718 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 23:03:59,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:03:59" (1/1) ... [2023-08-23 23:03:59,737 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:03:59" (1/1) ... [2023-08-23 23:03:59,761 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 162 [2023-08-23 23:03:59,761 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 23:03:59,762 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 23:03:59,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 23:03:59,762 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 23:03:59,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:03:59" (1/1) ... [2023-08-23 23:03:59,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:03:59" (1/1) ... [2023-08-23 23:03:59,774 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:03:59" (1/1) ... [2023-08-23 23:03:59,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:03:59" (1/1) ... [2023-08-23 23:03:59,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:03:59" (1/1) ... [2023-08-23 23:03:59,783 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:03:59" (1/1) ... [2023-08-23 23:03:59,785 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:03:59" (1/1) ... [2023-08-23 23:03:59,787 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:03:59" (1/1) ... [2023-08-23 23:03:59,790 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 23:03:59,790 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 23:03:59,790 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 23:03:59,791 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 23:03:59,791 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:03:59" (1/1) ... [2023-08-23 23:03:59,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:03:59,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 23:03:59,832 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 23:03:59,851 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 23:03:59,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 23:03:59,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-23 23:03:59,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 23:03:59,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 23:03:59,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 23:03:59,866 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-23 23:03:59,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-23 23:03:59,866 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-23 23:03:59,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-23 23:03:59,866 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-23 23:03:59,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-23 23:03:59,866 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-23 23:03:59,867 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-23 23:03:59,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 23:03:59,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-23 23:03:59,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 23:03:59,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 23:03:59,869 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 23:04:00,006 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 23:04:00,008 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 23:04:00,402 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 23:04:00,507 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 23:04:00,508 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-23 23:04:00,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:04:00 BoogieIcfgContainer [2023-08-23 23:04:00,510 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 23:04:00,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 23:04:00,513 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 23:04:00,515 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 23:04:00,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 11:03:59" (1/3) ... [2023-08-23 23:04:00,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cfa7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:04:00, skipping insertion in model container [2023-08-23 23:04:00,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:03:59" (2/3) ... [2023-08-23 23:04:00,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cfa7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:04:00, skipping insertion in model container [2023-08-23 23:04:00,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:04:00" (3/3) ... [2023-08-23 23:04:00,518 INFO L112 eAbstractionObserver]: Analyzing ICFG mix040_tso.oepc.i [2023-08-23 23:04:00,533 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 23:04:00,534 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-23 23:04:00,534 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 23:04:00,584 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-23 23:04:00,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 131 transitions, 282 flow [2023-08-23 23:04:00,653 INFO L124 PetriNetUnfolderBase]: 2/127 cut-off events. [2023-08-23 23:04:00,654 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:04:00,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 127 events. 2/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2023-08-23 23:04:00,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 131 transitions, 282 flow [2023-08-23 23:04:00,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 127 transitions, 266 flow [2023-08-23 23:04:00,672 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 23:04:00,683 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 127 transitions, 266 flow [2023-08-23 23:04:00,689 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 127 transitions, 266 flow [2023-08-23 23:04:00,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 127 transitions, 266 flow [2023-08-23 23:04:00,716 INFO L124 PetriNetUnfolderBase]: 2/127 cut-off events. [2023-08-23 23:04:00,716 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:04:00,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 127 events. 2/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2023-08-23 23:04:00,718 INFO L119 LiptonReduction]: Number of co-enabled transitions 3090 [2023-08-23 23:04:05,381 INFO L134 LiptonReduction]: Checked pairs total: 7976 [2023-08-23 23:04:05,382 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-08-23 23:04:05,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 23:04:05,397 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;@c2152bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 23:04:05,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-23 23:04:05,401 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 23:04:05,402 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-23 23:04:05,402 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:04:05,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:05,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:05,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:05,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:05,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1317619857, now seen corresponding path program 1 times [2023-08-23 23:04:05,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:05,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285182577] [2023-08-23 23:04:05,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:05,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:05,825 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 23:04:05,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:05,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285182577] [2023-08-23 23:04:05,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285182577] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:05,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:05,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-23 23:04:05,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001311866] [2023-08-23 23:04:05,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:05,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:04:05,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:05,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:04:05,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:04:05,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 242 [2023-08-23 23:04:05,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 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 23:04:05,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:05,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 242 [2023-08-23 23:04:05,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:06,638 INFO L124 PetriNetUnfolderBase]: 3567/5262 cut-off events. [2023-08-23 23:04:06,638 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-23 23:04:06,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10290 conditions, 5262 events. 3567/5262 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 29454 event pairs, 678 based on Foata normal form. 0/4994 useless extension candidates. Maximal degree in co-relation 10278. Up to 3862 conditions per place. [2023-08-23 23:04:06,670 INFO L140 encePairwiseOnDemand]: 239/242 looper letters, 35 selfloop transitions, 2 changer transitions 2/43 dead transitions. [2023-08-23 23:04:06,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 179 flow [2023-08-23 23:04:06,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:04:06,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:04:06,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2023-08-23 23:04:06,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5344352617079889 [2023-08-23 23:04:06,682 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2023-08-23 23:04:06,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2023-08-23 23:04:06,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:06,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2023-08-23 23:04:06,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:04:06,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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 23:04:06,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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 23:04:06,695 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 70 flow. Second operand 3 states and 388 transitions. [2023-08-23 23:04:06,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 179 flow [2023-08-23 23:04:06,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 174 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-23 23:04:06,700 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 66 flow [2023-08-23 23:04:06,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-08-23 23:04:06,704 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-08-23 23:04:06,705 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 66 flow [2023-08-23 23:04:06,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 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 23:04:06,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:06,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:06,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 23:04:06,706 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:06,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:06,706 INFO L85 PathProgramCache]: Analyzing trace with hash 580403258, now seen corresponding path program 1 times [2023-08-23 23:04:06,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:06,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703381162] [2023-08-23 23:04:06,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:06,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:06,969 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 23:04:06,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:06,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703381162] [2023-08-23 23:04:06,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703381162] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:06,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:06,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-23 23:04:06,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234053142] [2023-08-23 23:04:06,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:06,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:04:06,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:06,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:04:06,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:04:06,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 242 [2023-08-23 23:04:06,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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 23:04:06,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:06,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 242 [2023-08-23 23:04:06,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:07,540 INFO L124 PetriNetUnfolderBase]: 3785/5496 cut-off events. [2023-08-23 23:04:07,541 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2023-08-23 23:04:07,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11206 conditions, 5496 events. 3785/5496 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 29898 event pairs, 721 based on Foata normal form. 40/5517 useless extension candidates. Maximal degree in co-relation 11196. Up to 4819 conditions per place. [2023-08-23 23:04:07,576 INFO L140 encePairwiseOnDemand]: 238/242 looper letters, 39 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-08-23 23:04:07,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 194 flow [2023-08-23 23:04:07,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:04:07,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:04:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2023-08-23 23:04:07,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2023-08-23 23:04:07,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2023-08-23 23:04:07,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2023-08-23 23:04:07,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:07,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2023-08-23 23:04:07,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:04:07,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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 23:04:07,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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 23:04:07,586 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 66 flow. Second operand 3 states and 385 transitions. [2023-08-23 23:04:07,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 194 flow [2023-08-23 23:04:07,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 23:04:07,587 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 81 flow [2023-08-23 23:04:07,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2023-08-23 23:04:07,590 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-08-23 23:04:07,592 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 81 flow [2023-08-23 23:04:07,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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 23:04:07,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:07,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:07,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-23 23:04:07,597 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:07,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:07,600 INFO L85 PathProgramCache]: Analyzing trace with hash 812629623, now seen corresponding path program 1 times [2023-08-23 23:04:07,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:07,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424451936] [2023-08-23 23:04:07,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:07,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:08,064 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 23:04:08,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:08,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424451936] [2023-08-23 23:04:08,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424451936] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:08,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:08,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:04:08,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437231986] [2023-08-23 23:04:08,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:08,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:04:08,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:08,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:04:08,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:04:08,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 242 [2023-08-23 23:04:08,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 23:04:08,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:08,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 242 [2023-08-23 23:04:08,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:09,174 INFO L124 PetriNetUnfolderBase]: 8565/11734 cut-off events. [2023-08-23 23:04:09,175 INFO L125 PetriNetUnfolderBase]: For 1469/1469 co-relation queries the response was YES. [2023-08-23 23:04:09,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25551 conditions, 11734 events. 8565/11734 cut-off events. For 1469/1469 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 55422 event pairs, 2151 based on Foata normal form. 380/12114 useless extension candidates. Maximal degree in co-relation 25540. Up to 7215 conditions per place. [2023-08-23 23:04:09,236 INFO L140 encePairwiseOnDemand]: 230/242 looper letters, 46 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2023-08-23 23:04:09,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 58 transitions, 267 flow [2023-08-23 23:04:09,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:04:09,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:04:09,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 456 transitions. [2023-08-23 23:04:09,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47107438016528924 [2023-08-23 23:04:09,238 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 456 transitions. [2023-08-23 23:04:09,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 456 transitions. [2023-08-23 23:04:09,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:09,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 456 transitions. [2023-08-23 23:04:09,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 23:04:09,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 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 23:04:09,242 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 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 23:04:09,242 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 81 flow. Second operand 4 states and 456 transitions. [2023-08-23 23:04:09,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 58 transitions, 267 flow [2023-08-23 23:04:09,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:04:09,245 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 176 flow [2023-08-23 23:04:09,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-08-23 23:04:09,245 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-23 23:04:09,246 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 176 flow [2023-08-23 23:04:09,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 23:04:09,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:09,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:09,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-23 23:04:09,247 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:09,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:09,247 INFO L85 PathProgramCache]: Analyzing trace with hash 268360005, now seen corresponding path program 1 times [2023-08-23 23:04:09,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:09,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749447548] [2023-08-23 23:04:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:09,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:10,118 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 23:04:10,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:10,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749447548] [2023-08-23 23:04:10,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749447548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:10,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:10,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:04:10,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278905176] [2023-08-23 23:04:10,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:10,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:04:10,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:10,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:04:10,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:04:10,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 242 [2023-08-23 23:04:10,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 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 23:04:10,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:10,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 242 [2023-08-23 23:04:10,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:11,431 INFO L124 PetriNetUnfolderBase]: 9495/13024 cut-off events. [2023-08-23 23:04:11,432 INFO L125 PetriNetUnfolderBase]: For 8929/8929 co-relation queries the response was YES. [2023-08-23 23:04:11,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37091 conditions, 13024 events. 9495/13024 cut-off events. For 8929/8929 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 64453 event pairs, 1287 based on Foata normal form. 60/13084 useless extension candidates. Maximal degree in co-relation 37076. Up to 9033 conditions per place. [2023-08-23 23:04:11,486 INFO L140 encePairwiseOnDemand]: 229/242 looper letters, 80 selfloop transitions, 32 changer transitions 0/112 dead transitions. [2023-08-23 23:04:11,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 112 transitions, 714 flow [2023-08-23 23:04:11,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:04:11,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:04:11,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 583 transitions. [2023-08-23 23:04:11,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2023-08-23 23:04:11,488 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 583 transitions. [2023-08-23 23:04:11,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 583 transitions. [2023-08-23 23:04:11,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:11,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 583 transitions. [2023-08-23 23:04:11,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.6) internal successors, (583), 5 states have internal predecessors, (583), 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 23:04:11,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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 23:04:11,493 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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 23:04:11,493 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 176 flow. Second operand 5 states and 583 transitions. [2023-08-23 23:04:11,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 112 transitions, 714 flow [2023-08-23 23:04:11,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 112 transitions, 703 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-23 23:04:11,502 INFO L231 Difference]: Finished difference. Result has 51 places, 66 transitions, 479 flow [2023-08-23 23:04:11,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=479, PETRI_PLACES=51, PETRI_TRANSITIONS=66} [2023-08-23 23:04:11,503 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-08-23 23:04:11,503 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 66 transitions, 479 flow [2023-08-23 23:04:11,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 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 23:04:11,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:11,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:11,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-23 23:04:11,504 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:11,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:11,505 INFO L85 PathProgramCache]: Analyzing trace with hash -270807597, now seen corresponding path program 1 times [2023-08-23 23:04:11,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:11,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316033454] [2023-08-23 23:04:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:11,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:11,717 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 23:04:11,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:11,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316033454] [2023-08-23 23:04:11,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316033454] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:11,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:11,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:04:11,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514488678] [2023-08-23 23:04:11,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:11,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:04:11,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:11,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:04:11,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:04:11,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 242 [2023-08-23 23:04:11,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 66 transitions, 479 flow. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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 23:04:11,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:11,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 242 [2023-08-23 23:04:11,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:12,802 INFO L124 PetriNetUnfolderBase]: 7958/11342 cut-off events. [2023-08-23 23:04:12,802 INFO L125 PetriNetUnfolderBase]: For 24030/24253 co-relation queries the response was YES. [2023-08-23 23:04:12,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42219 conditions, 11342 events. 7958/11342 cut-off events. For 24030/24253 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 62349 event pairs, 1398 based on Foata normal form. 150/11162 useless extension candidates. Maximal degree in co-relation 42199. Up to 8163 conditions per place. [2023-08-23 23:04:12,877 INFO L140 encePairwiseOnDemand]: 235/242 looper letters, 77 selfloop transitions, 20 changer transitions 0/113 dead transitions. [2023-08-23 23:04:12,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 113 transitions, 956 flow [2023-08-23 23:04:12,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:04:12,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:04:12,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 510 transitions. [2023-08-23 23:04:12,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268595041322314 [2023-08-23 23:04:12,879 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 510 transitions. [2023-08-23 23:04:12,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 510 transitions. [2023-08-23 23:04:12,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:12,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 510 transitions. [2023-08-23 23:04:12,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 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 23:04:12,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 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 23:04:12,884 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 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 23:04:12,885 INFO L175 Difference]: Start difference. First operand has 51 places, 66 transitions, 479 flow. Second operand 4 states and 510 transitions. [2023-08-23 23:04:12,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 113 transitions, 956 flow [2023-08-23 23:04:12,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 113 transitions, 956 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-23 23:04:12,896 INFO L231 Difference]: Finished difference. Result has 56 places, 79 transitions, 674 flow [2023-08-23 23:04:12,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=674, PETRI_PLACES=56, PETRI_TRANSITIONS=79} [2023-08-23 23:04:12,899 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2023-08-23 23:04:12,899 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 79 transitions, 674 flow [2023-08-23 23:04:12,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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 23:04:12,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:12,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:12,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-23 23:04:12,900 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:12,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:12,900 INFO L85 PathProgramCache]: Analyzing trace with hash -322470957, now seen corresponding path program 2 times [2023-08-23 23:04:12,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:12,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525686532] [2023-08-23 23:04:12,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:12,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:13,312 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 23:04:13,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:13,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525686532] [2023-08-23 23:04:13,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525686532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:13,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:13,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:04:13,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129917210] [2023-08-23 23:04:13,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:13,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:04:13,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:13,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:04:13,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:04:13,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 242 [2023-08-23 23:04:13,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 79 transitions, 674 flow. Second operand has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 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 23:04:13,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:13,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 242 [2023-08-23 23:04:13,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:14,297 INFO L124 PetriNetUnfolderBase]: 7910/11224 cut-off events. [2023-08-23 23:04:14,297 INFO L125 PetriNetUnfolderBase]: For 34345/34705 co-relation queries the response was YES. [2023-08-23 23:04:14,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46244 conditions, 11224 events. 7910/11224 cut-off events. For 34345/34705 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 61026 event pairs, 1222 based on Foata normal form. 260/11088 useless extension candidates. Maximal degree in co-relation 46220. Up to 8238 conditions per place. [2023-08-23 23:04:14,366 INFO L140 encePairwiseOnDemand]: 238/242 looper letters, 88 selfloop transitions, 13 changer transitions 0/117 dead transitions. [2023-08-23 23:04:14,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 117 transitions, 1115 flow [2023-08-23 23:04:14,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:04:14,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:04:14,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 497 transitions. [2023-08-23 23:04:14,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134297520661157 [2023-08-23 23:04:14,369 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 497 transitions. [2023-08-23 23:04:14,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 497 transitions. [2023-08-23 23:04:14,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:14,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 497 transitions. [2023-08-23 23:04:14,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 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 23:04:14,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 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 23:04:14,373 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 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 23:04:14,373 INFO L175 Difference]: Start difference. First operand has 56 places, 79 transitions, 674 flow. Second operand 4 states and 497 transitions. [2023-08-23 23:04:14,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 117 transitions, 1115 flow [2023-08-23 23:04:14,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 117 transitions, 1104 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:04:14,389 INFO L231 Difference]: Finished difference. Result has 59 places, 81 transitions, 721 flow [2023-08-23 23:04:14,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=721, PETRI_PLACES=59, PETRI_TRANSITIONS=81} [2023-08-23 23:04:14,389 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2023-08-23 23:04:14,389 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 81 transitions, 721 flow [2023-08-23 23:04:14,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 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 23:04:14,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:14,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:14,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-23 23:04:14,390 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:14,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:14,391 INFO L85 PathProgramCache]: Analyzing trace with hash 195820663, now seen corresponding path program 1 times [2023-08-23 23:04:14,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:14,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183870226] [2023-08-23 23:04:14,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:14,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:14,676 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 23:04:14,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:14,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183870226] [2023-08-23 23:04:14,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183870226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:14,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:14,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:04:14,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117251074] [2023-08-23 23:04:14,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:14,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:04:14,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:14,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:04:14,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:04:14,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 242 [2023-08-23 23:04:14,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 81 transitions, 721 flow. Second operand has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 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 23:04:14,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:14,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 242 [2023-08-23 23:04:14,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:15,795 INFO L124 PetriNetUnfolderBase]: 8424/12006 cut-off events. [2023-08-23 23:04:15,795 INFO L125 PetriNetUnfolderBase]: For 40562/40829 co-relation queries the response was YES. [2023-08-23 23:04:15,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50624 conditions, 12006 events. 8424/12006 cut-off events. For 40562/40829 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 65918 event pairs, 1443 based on Foata normal form. 212/11894 useless extension candidates. Maximal degree in co-relation 50598. Up to 8451 conditions per place. [2023-08-23 23:04:15,866 INFO L140 encePairwiseOnDemand]: 234/242 looper letters, 86 selfloop transitions, 33 changer transitions 0/135 dead transitions. [2023-08-23 23:04:15,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 135 transitions, 1296 flow [2023-08-23 23:04:15,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:04:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:04:15,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 626 transitions. [2023-08-23 23:04:15,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173553719008265 [2023-08-23 23:04:15,870 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 626 transitions. [2023-08-23 23:04:15,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 626 transitions. [2023-08-23 23:04:15,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:15,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 626 transitions. [2023-08-23 23:04:15,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 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 23:04:15,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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 23:04:15,877 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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 23:04:15,877 INFO L175 Difference]: Start difference. First operand has 59 places, 81 transitions, 721 flow. Second operand 5 states and 626 transitions. [2023-08-23 23:04:15,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 135 transitions, 1296 flow [2023-08-23 23:04:15,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 135 transitions, 1285 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:04:15,899 INFO L231 Difference]: Finished difference. Result has 63 places, 92 transitions, 918 flow [2023-08-23 23:04:15,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=918, PETRI_PLACES=63, PETRI_TRANSITIONS=92} [2023-08-23 23:04:15,900 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-08-23 23:04:15,900 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 92 transitions, 918 flow [2023-08-23 23:04:15,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 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 23:04:15,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:15,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:15,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-23 23:04:15,901 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:15,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:15,901 INFO L85 PathProgramCache]: Analyzing trace with hash 109056313, now seen corresponding path program 2 times [2023-08-23 23:04:15,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:15,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069741690] [2023-08-23 23:04:15,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:15,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:16,260 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 23:04:16,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:16,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069741690] [2023-08-23 23:04:16,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069741690] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:16,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:16,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:04:16,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27481520] [2023-08-23 23:04:16,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:16,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-23 23:04:16,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:16,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-23 23:04:16,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-23 23:04:16,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 242 [2023-08-23 23:04:16,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 92 transitions, 918 flow. Second operand has 6 states, 6 states have (on average 113.66666666666667) internal successors, (682), 6 states have internal predecessors, (682), 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 23:04:16,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:16,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 242 [2023-08-23 23:04:16,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:17,396 INFO L124 PetriNetUnfolderBase]: 8578/12232 cut-off events. [2023-08-23 23:04:17,396 INFO L125 PetriNetUnfolderBase]: For 56507/56774 co-relation queries the response was YES. [2023-08-23 23:04:17,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55981 conditions, 12232 events. 8578/12232 cut-off events. For 56507/56774 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 67440 event pairs, 1459 based on Foata normal form. 212/12120 useless extension candidates. Maximal degree in co-relation 55953. Up to 8485 conditions per place. [2023-08-23 23:04:17,484 INFO L140 encePairwiseOnDemand]: 234/242 looper letters, 89 selfloop transitions, 38 changer transitions 0/143 dead transitions. [2023-08-23 23:04:17,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 143 transitions, 1513 flow [2023-08-23 23:04:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:04:17,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:04:17,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 621 transitions. [2023-08-23 23:04:17,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132231404958678 [2023-08-23 23:04:17,488 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 621 transitions. [2023-08-23 23:04:17,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 621 transitions. [2023-08-23 23:04:17,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:17,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 621 transitions. [2023-08-23 23:04:17,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.2) internal successors, (621), 5 states have internal predecessors, (621), 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 23:04:17,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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 23:04:17,493 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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 23:04:17,493 INFO L175 Difference]: Start difference. First operand has 63 places, 92 transitions, 918 flow. Second operand 5 states and 621 transitions. [2023-08-23 23:04:17,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 143 transitions, 1513 flow [2023-08-23 23:04:17,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 143 transitions, 1445 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-23 23:04:17,547 INFO L231 Difference]: Finished difference. Result has 65 places, 100 transitions, 1053 flow [2023-08-23 23:04:17,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1053, PETRI_PLACES=65, PETRI_TRANSITIONS=100} [2023-08-23 23:04:17,549 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-23 23:04:17,549 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 100 transitions, 1053 flow [2023-08-23 23:04:17,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.66666666666667) internal successors, (682), 6 states have internal predecessors, (682), 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 23:04:17,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:17,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:17,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-23 23:04:17,550 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:17,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:17,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1406666057, now seen corresponding path program 3 times [2023-08-23 23:04:17,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:17,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956081607] [2023-08-23 23:04:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:17,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:17,965 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 23:04:17,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:17,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956081607] [2023-08-23 23:04:17,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956081607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:17,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:17,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:04:17,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623182904] [2023-08-23 23:04:17,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:17,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-23 23:04:17,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:17,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-23 23:04:17,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-23 23:04:17,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 242 [2023-08-23 23:04:17,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 100 transitions, 1053 flow. Second operand has 6 states, 6 states have (on average 113.66666666666667) internal successors, (682), 6 states have internal predecessors, (682), 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 23:04:17,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:17,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 242 [2023-08-23 23:04:17,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:19,246 INFO L124 PetriNetUnfolderBase]: 9765/13978 cut-off events. [2023-08-23 23:04:19,246 INFO L125 PetriNetUnfolderBase]: For 77421/77712 co-relation queries the response was YES. [2023-08-23 23:04:19,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65510 conditions, 13978 events. 9765/13978 cut-off events. For 77421/77712 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 80078 event pairs, 1547 based on Foata normal form. 322/13900 useless extension candidates. Maximal degree in co-relation 65481. Up to 7817 conditions per place. [2023-08-23 23:04:19,334 INFO L140 encePairwiseOnDemand]: 235/242 looper letters, 94 selfloop transitions, 56 changer transitions 0/166 dead transitions. [2023-08-23 23:04:19,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 166 transitions, 1873 flow [2023-08-23 23:04:19,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:04:19,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:04:19,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 624 transitions. [2023-08-23 23:04:19,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515702479338843 [2023-08-23 23:04:19,341 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 624 transitions. [2023-08-23 23:04:19,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 624 transitions. [2023-08-23 23:04:19,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:19,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 624 transitions. [2023-08-23 23:04:19,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 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 23:04:19,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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 23:04:19,345 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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 23:04:19,345 INFO L175 Difference]: Start difference. First operand has 65 places, 100 transitions, 1053 flow. Second operand 5 states and 624 transitions. [2023-08-23 23:04:19,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 166 transitions, 1873 flow [2023-08-23 23:04:19,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 166 transitions, 1798 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-23 23:04:19,444 INFO L231 Difference]: Finished difference. Result has 69 places, 116 transitions, 1418 flow [2023-08-23 23:04:19,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1418, PETRI_PLACES=69, PETRI_TRANSITIONS=116} [2023-08-23 23:04:19,445 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2023-08-23 23:04:19,445 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 116 transitions, 1418 flow [2023-08-23 23:04:19,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.66666666666667) internal successors, (682), 6 states have internal predecessors, (682), 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 23:04:19,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:19,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:19,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-23 23:04:19,446 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:19,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:19,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1775469888, now seen corresponding path program 1 times [2023-08-23 23:04:19,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:19,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773028703] [2023-08-23 23:04:19,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:19,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:20,062 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 23:04:20,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:20,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773028703] [2023-08-23 23:04:20,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773028703] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:20,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:20,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:04:20,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777583506] [2023-08-23 23:04:20,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:20,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-23 23:04:20,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:20,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-23 23:04:20,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-23 23:04:20,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 242 [2023-08-23 23:04:20,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 116 transitions, 1418 flow. Second operand has 6 states, 6 states have (on average 101.83333333333333) internal successors, (611), 6 states have internal predecessors, (611), 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 23:04:20,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:20,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 242 [2023-08-23 23:04:20,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:21,915 INFO L124 PetriNetUnfolderBase]: 13797/18902 cut-off events. [2023-08-23 23:04:21,916 INFO L125 PetriNetUnfolderBase]: For 103085/103085 co-relation queries the response was YES. [2023-08-23 23:04:21,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91508 conditions, 18902 events. 13797/18902 cut-off events. For 103085/103085 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 99596 event pairs, 765 based on Foata normal form. 64/18966 useless extension candidates. Maximal degree in co-relation 91476. Up to 11983 conditions per place. [2023-08-23 23:04:22,010 INFO L140 encePairwiseOnDemand]: 229/242 looper letters, 120 selfloop transitions, 126 changer transitions 0/246 dead transitions. [2023-08-23 23:04:22,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 246 transitions, 2854 flow [2023-08-23 23:04:22,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-23 23:04:22,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-23 23:04:22,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 919 transitions. [2023-08-23 23:04:22,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4746900826446281 [2023-08-23 23:04:22,014 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 919 transitions. [2023-08-23 23:04:22,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 919 transitions. [2023-08-23 23:04:22,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:22,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 919 transitions. [2023-08-23 23:04:22,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.875) internal successors, (919), 8 states have internal predecessors, (919), 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 23:04:22,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 242.0) internal successors, (2178), 9 states have internal predecessors, (2178), 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 23:04:22,022 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 242.0) internal successors, (2178), 9 states have internal predecessors, (2178), 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 23:04:22,022 INFO L175 Difference]: Start difference. First operand has 69 places, 116 transitions, 1418 flow. Second operand 8 states and 919 transitions. [2023-08-23 23:04:22,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 246 transitions, 2854 flow [2023-08-23 23:04:22,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 246 transitions, 2834 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-23 23:04:22,173 INFO L231 Difference]: Finished difference. Result has 81 places, 176 transitions, 2612 flow [2023-08-23 23:04:22,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2612, PETRI_PLACES=81, PETRI_TRANSITIONS=176} [2023-08-23 23:04:22,174 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2023-08-23 23:04:22,174 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 176 transitions, 2612 flow [2023-08-23 23:04:22,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.83333333333333) internal successors, (611), 6 states have internal predecessors, (611), 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 23:04:22,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:22,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:22,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-23 23:04:22,175 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:22,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:22,175 INFO L85 PathProgramCache]: Analyzing trace with hash -719150404, now seen corresponding path program 2 times [2023-08-23 23:04:22,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:22,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632812504] [2023-08-23 23:04:22,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:22,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:22,689 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 23:04:22,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:22,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632812504] [2023-08-23 23:04:22,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632812504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:22,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:22,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:04:22,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257010296] [2023-08-23 23:04:22,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:22,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-23 23:04:22,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:22,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-23 23:04:22,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-23 23:04:22,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 242 [2023-08-23 23:04:22,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 176 transitions, 2612 flow. Second operand has 6 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 states have internal predecessors, (665), 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 23:04:22,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:22,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 242 [2023-08-23 23:04:22,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:24,460 INFO L124 PetriNetUnfolderBase]: 12164/17380 cut-off events. [2023-08-23 23:04:24,460 INFO L125 PetriNetUnfolderBase]: For 167758/168390 co-relation queries the response was YES. [2023-08-23 23:04:24,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103749 conditions, 17380 events. 12164/17380 cut-off events. For 167758/168390 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 102511 event pairs, 1606 based on Foata normal form. 190/16921 useless extension candidates. Maximal degree in co-relation 103710. Up to 11113 conditions per place. [2023-08-23 23:04:24,588 INFO L140 encePairwiseOnDemand]: 234/242 looper letters, 132 selfloop transitions, 50 changer transitions 0/221 dead transitions. [2023-08-23 23:04:24,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 221 transitions, 3334 flow [2023-08-23 23:04:24,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:04:24,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:04:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 606 transitions. [2023-08-23 23:04:24,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008264462809917 [2023-08-23 23:04:24,591 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 606 transitions. [2023-08-23 23:04:24,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 606 transitions. [2023-08-23 23:04:24,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:24,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 606 transitions. [2023-08-23 23:04:24,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.2) internal successors, (606), 5 states have internal predecessors, (606), 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 23:04:24,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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 23:04:24,596 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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 23:04:24,596 INFO L175 Difference]: Start difference. First operand has 81 places, 176 transitions, 2612 flow. Second operand 5 states and 606 transitions. [2023-08-23 23:04:24,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 221 transitions, 3334 flow [2023-08-23 23:04:25,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 221 transitions, 3129 flow, removed 72 selfloop flow, removed 3 redundant places. [2023-08-23 23:04:25,010 INFO L231 Difference]: Finished difference. Result has 83 places, 181 transitions, 2648 flow [2023-08-23 23:04:25,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2648, PETRI_PLACES=83, PETRI_TRANSITIONS=181} [2023-08-23 23:04:25,013 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2023-08-23 23:04:25,013 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 181 transitions, 2648 flow [2023-08-23 23:04:25,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 states have internal predecessors, (665), 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 23:04:25,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:25,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:25,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-23 23:04:25,014 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:25,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:25,014 INFO L85 PathProgramCache]: Analyzing trace with hash -372887012, now seen corresponding path program 3 times [2023-08-23 23:04:25,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:25,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991937139] [2023-08-23 23:04:25,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:25,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:25,603 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 23:04:25,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:25,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991937139] [2023-08-23 23:04:25,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991937139] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:25,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:25,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-23 23:04:25,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899004045] [2023-08-23 23:04:25,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:25,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-23 23:04:25,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:25,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-23 23:04:25,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-23 23:04:25,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 242 [2023-08-23 23:04:25,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 181 transitions, 2648 flow. Second operand has 7 states, 7 states have (on average 112.42857142857143) internal successors, (787), 7 states have internal predecessors, (787), 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 23:04:25,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:25,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 242 [2023-08-23 23:04:25,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:28,127 INFO L124 PetriNetUnfolderBase]: 13381/19240 cut-off events. [2023-08-23 23:04:28,127 INFO L125 PetriNetUnfolderBase]: For 171836/172476 co-relation queries the response was YES. [2023-08-23 23:04:28,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113990 conditions, 19240 events. 13381/19240 cut-off events. For 171836/172476 co-relation queries the response was YES. Maximal size of possible extension queue 907. Compared 116959 event pairs, 1494 based on Foata normal form. 184/18612 useless extension candidates. Maximal degree in co-relation 113949. Up to 9747 conditions per place. [2023-08-23 23:04:28,294 INFO L140 encePairwiseOnDemand]: 234/242 looper letters, 128 selfloop transitions, 96 changer transitions 0/263 dead transitions. [2023-08-23 23:04:28,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 263 transitions, 3903 flow [2023-08-23 23:04:28,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-23 23:04:28,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-23 23:04:28,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 742 transitions. [2023-08-23 23:04:28,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5110192837465565 [2023-08-23 23:04:28,297 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 742 transitions. [2023-08-23 23:04:28,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 742 transitions. [2023-08-23 23:04:28,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:28,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 742 transitions. [2023-08-23 23:04:28,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 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 23:04:28,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 242.0) internal successors, (1694), 7 states have internal predecessors, (1694), 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 23:04:28,302 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 242.0) internal successors, (1694), 7 states have internal predecessors, (1694), 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 23:04:28,302 INFO L175 Difference]: Start difference. First operand has 83 places, 181 transitions, 2648 flow. Second operand 6 states and 742 transitions. [2023-08-23 23:04:28,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 263 transitions, 3903 flow [2023-08-23 23:04:28,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 263 transitions, 3813 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-23 23:04:28,702 INFO L231 Difference]: Finished difference. Result has 87 places, 207 transitions, 3336 flow [2023-08-23 23:04:28,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=2569, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3336, PETRI_PLACES=87, PETRI_TRANSITIONS=207} [2023-08-23 23:04:28,703 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2023-08-23 23:04:28,703 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 207 transitions, 3336 flow [2023-08-23 23:04:28,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.42857142857143) internal successors, (787), 7 states have internal predecessors, (787), 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 23:04:28,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:28,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:28,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-23 23:04:28,704 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:28,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:28,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2061809792, now seen corresponding path program 4 times [2023-08-23 23:04:28,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:28,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215671938] [2023-08-23 23:04:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:28,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:29,265 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 23:04:29,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:29,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215671938] [2023-08-23 23:04:29,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215671938] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:29,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:29,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:04:29,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275011745] [2023-08-23 23:04:29,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:29,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-23 23:04:29,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:29,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-23 23:04:29,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-23 23:04:29,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 242 [2023-08-23 23:04:29,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 207 transitions, 3336 flow. Second operand has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 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 23:04:29,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:29,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 242 [2023-08-23 23:04:29,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:31,907 INFO L124 PetriNetUnfolderBase]: 15293/22099 cut-off events. [2023-08-23 23:04:31,908 INFO L125 PetriNetUnfolderBase]: For 247323/248261 co-relation queries the response was YES. [2023-08-23 23:04:31,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135080 conditions, 22099 events. 15293/22099 cut-off events. For 247323/248261 co-relation queries the response was YES. Maximal size of possible extension queue 1049. Compared 138830 event pairs, 1494 based on Foata normal form. 507/21689 useless extension candidates. Maximal degree in co-relation 135037. Up to 10699 conditions per place. [2023-08-23 23:04:32,049 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 152 selfloop transitions, 81 changer transitions 0/272 dead transitions. [2023-08-23 23:04:32,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 272 transitions, 4347 flow [2023-08-23 23:04:32,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:04:32,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:04:32,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 842 transitions. [2023-08-23 23:04:32,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4970484061393152 [2023-08-23 23:04:32,052 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 842 transitions. [2023-08-23 23:04:32,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 842 transitions. [2023-08-23 23:04:32,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:32,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 842 transitions. [2023-08-23 23:04:32,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 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 23:04:32,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 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 23:04:32,056 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 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 23:04:32,056 INFO L175 Difference]: Start difference. First operand has 87 places, 207 transitions, 3336 flow. Second operand 7 states and 842 transitions. [2023-08-23 23:04:32,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 272 transitions, 4347 flow [2023-08-23 23:04:32,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 272 transitions, 4333 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-23 23:04:32,600 INFO L231 Difference]: Finished difference. Result has 94 places, 214 transitions, 3687 flow [2023-08-23 23:04:32,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=3322, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3687, PETRI_PLACES=94, PETRI_TRANSITIONS=214} [2023-08-23 23:04:32,600 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 52 predicate places. [2023-08-23 23:04:32,600 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 214 transitions, 3687 flow [2023-08-23 23:04:32,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 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 23:04:32,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:32,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:32,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-23 23:04:32,601 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:32,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:32,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2061817728, now seen corresponding path program 1 times [2023-08-23 23:04:32,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:32,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547942218] [2023-08-23 23:04:32,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:32,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:33,131 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 23:04:33,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:33,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547942218] [2023-08-23 23:04:33,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547942218] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:33,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:33,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:04:33,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656068068] [2023-08-23 23:04:33,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:33,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:04:33,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:33,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:04:33,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:04:33,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 242 [2023-08-23 23:04:33,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 214 transitions, 3687 flow. Second operand has 5 states, 5 states have (on average 101.4) internal successors, (507), 5 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:04:33,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:33,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 242 [2023-08-23 23:04:33,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:37,280 INFO L124 PetriNetUnfolderBase]: 25825/35978 cut-off events. [2023-08-23 23:04:37,280 INFO L125 PetriNetUnfolderBase]: For 385787/385787 co-relation queries the response was YES. [2023-08-23 23:04:37,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218953 conditions, 35978 events. 25825/35978 cut-off events. For 385787/385787 co-relation queries the response was YES. Maximal size of possible extension queue 1371. Compared 215202 event pairs, 2103 based on Foata normal form. 180/36158 useless extension candidates. Maximal degree in co-relation 218907. Up to 15457 conditions per place. [2023-08-23 23:04:37,630 INFO L140 encePairwiseOnDemand]: 229/242 looper letters, 172 selfloop transitions, 154 changer transitions 137/463 dead transitions. [2023-08-23 23:04:37,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 463 transitions, 8604 flow [2023-08-23 23:04:37,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-23 23:04:37,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-23 23:04:37,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 679 transitions. [2023-08-23 23:04:37,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46763085399449034 [2023-08-23 23:04:37,633 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 679 transitions. [2023-08-23 23:04:37,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 679 transitions. [2023-08-23 23:04:37,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:37,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 679 transitions. [2023-08-23 23:04:37,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.16666666666667) internal successors, (679), 6 states have internal predecessors, (679), 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 23:04:37,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 242.0) internal successors, (1694), 7 states have internal predecessors, (1694), 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 23:04:37,637 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 242.0) internal successors, (1694), 7 states have internal predecessors, (1694), 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 23:04:37,637 INFO L175 Difference]: Start difference. First operand has 94 places, 214 transitions, 3687 flow. Second operand 6 states and 679 transitions. [2023-08-23 23:04:37,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 463 transitions, 8604 flow [2023-08-23 23:04:38,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 463 transitions, 8504 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-08-23 23:04:38,422 INFO L231 Difference]: Finished difference. Result has 101 places, 248 transitions, 4829 flow [2023-08-23 23:04:38,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=3627, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4829, PETRI_PLACES=101, PETRI_TRANSITIONS=248} [2023-08-23 23:04:38,423 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2023-08-23 23:04:38,423 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 248 transitions, 4829 flow [2023-08-23 23:04:38,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.4) internal successors, (507), 5 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:04:38,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:38,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:38,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-23 23:04:38,424 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:38,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:38,424 INFO L85 PathProgramCache]: Analyzing trace with hash 925871514, now seen corresponding path program 2 times [2023-08-23 23:04:38,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:38,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7884601] [2023-08-23 23:04:38,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:38,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:38,596 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 23:04:38,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:38,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7884601] [2023-08-23 23:04:38,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7884601] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:38,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:38,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:04:38,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529564518] [2023-08-23 23:04:38,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:38,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:04:38,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:38,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:04:38,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:04:38,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 242 [2023-08-23 23:04:38,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 248 transitions, 4829 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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 23:04:38,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:38,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 242 [2023-08-23 23:04:38,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:41,554 INFO L124 PetriNetUnfolderBase]: 14230/21093 cut-off events. [2023-08-23 23:04:41,554 INFO L125 PetriNetUnfolderBase]: For 403368/408594 co-relation queries the response was YES. [2023-08-23 23:04:41,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140678 conditions, 21093 events. 14230/21093 cut-off events. For 403368/408594 co-relation queries the response was YES. Maximal size of possible extension queue 1244. Compared 143698 event pairs, 2154 based on Foata normal form. 3722/24144 useless extension candidates. Maximal degree in co-relation 140628. Up to 12887 conditions per place. [2023-08-23 23:04:41,688 INFO L140 encePairwiseOnDemand]: 235/242 looper letters, 433 selfloop transitions, 9 changer transitions 68/564 dead transitions. [2023-08-23 23:04:41,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 564 transitions, 12325 flow [2023-08-23 23:04:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:04:41,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:04:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 613 transitions. [2023-08-23 23:04:41,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066115702479339 [2023-08-23 23:04:41,690 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 613 transitions. [2023-08-23 23:04:41,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 613 transitions. [2023-08-23 23:04:41,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:41,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 613 transitions. [2023-08-23 23:04:41,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.6) internal successors, (613), 5 states have internal predecessors, (613), 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 23:04:41,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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 23:04:41,694 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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 23:04:41,694 INFO L175 Difference]: Start difference. First operand has 101 places, 248 transitions, 4829 flow. Second operand 5 states and 613 transitions. [2023-08-23 23:04:41,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 564 transitions, 12325 flow [2023-08-23 23:04:42,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 564 transitions, 12035 flow, removed 74 selfloop flow, removed 4 redundant places. [2023-08-23 23:04:42,012 INFO L231 Difference]: Finished difference. Result has 104 places, 229 transitions, 4221 flow [2023-08-23 23:04:42,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=4036, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4221, PETRI_PLACES=104, PETRI_TRANSITIONS=229} [2023-08-23 23:04:42,013 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 62 predicate places. [2023-08-23 23:04:42,013 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 229 transitions, 4221 flow [2023-08-23 23:04:42,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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 23:04:42,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:42,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:42,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-23 23:04:42,014 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:42,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:42,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1002904961, now seen corresponding path program 1 times [2023-08-23 23:04:42,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:42,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139634884] [2023-08-23 23:04:42,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:42,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:42,298 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 23:04:42,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:42,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139634884] [2023-08-23 23:04:42,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139634884] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:42,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:42,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:04:42,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63727330] [2023-08-23 23:04:42,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:42,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:04:42,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:42,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:04:42,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:04:42,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 242 [2023-08-23 23:04:42,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 229 transitions, 4221 flow. Second operand has 5 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 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 23:04:42,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:42,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 242 [2023-08-23 23:04:42,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:44,828 INFO L124 PetriNetUnfolderBase]: 11526/17499 cut-off events. [2023-08-23 23:04:44,829 INFO L125 PetriNetUnfolderBase]: For 359218/365368 co-relation queries the response was YES. [2023-08-23 23:04:44,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127368 conditions, 17499 events. 11526/17499 cut-off events. For 359218/365368 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 121113 event pairs, 775 based on Foata normal form. 3402/20346 useless extension candidates. Maximal degree in co-relation 127314. Up to 6924 conditions per place. [2023-08-23 23:04:44,938 INFO L140 encePairwiseOnDemand]: 235/242 looper letters, 481 selfloop transitions, 17 changer transitions 92/644 dead transitions. [2023-08-23 23:04:44,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 644 transitions, 13904 flow [2023-08-23 23:04:44,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:04:44,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:04:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 859 transitions. [2023-08-23 23:04:44,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070838252656434 [2023-08-23 23:04:44,941 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 859 transitions. [2023-08-23 23:04:44,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 859 transitions. [2023-08-23 23:04:44,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:44,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 859 transitions. [2023-08-23 23:04:44,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.71428571428571) internal successors, (859), 7 states have internal predecessors, (859), 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 23:04:44,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 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 23:04:44,946 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 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 23:04:44,946 INFO L175 Difference]: Start difference. First operand has 104 places, 229 transitions, 4221 flow. Second operand 7 states and 859 transitions. [2023-08-23 23:04:44,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 644 transitions, 13904 flow [2023-08-23 23:04:45,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 644 transitions, 13214 flow, removed 239 selfloop flow, removed 5 redundant places. [2023-08-23 23:04:45,242 INFO L231 Difference]: Finished difference. Result has 108 places, 205 transitions, 3593 flow [2023-08-23 23:04:45,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=3467, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3593, PETRI_PLACES=108, PETRI_TRANSITIONS=205} [2023-08-23 23:04:45,243 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 66 predicate places. [2023-08-23 23:04:45,243 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 205 transitions, 3593 flow [2023-08-23 23:04:45,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 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 23:04:45,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:45,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:45,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-23 23:04:45,245 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:45,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:45,245 INFO L85 PathProgramCache]: Analyzing trace with hash 226403653, now seen corresponding path program 1 times [2023-08-23 23:04:45,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:45,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927315037] [2023-08-23 23:04:45,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:45,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:45,708 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 23:04:45,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:45,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927315037] [2023-08-23 23:04:45,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927315037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:45,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:45,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:04:45,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633565587] [2023-08-23 23:04:45,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:45,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:04:45,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:45,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:04:45,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:04:45,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 242 [2023-08-23 23:04:45,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 205 transitions, 3593 flow. Second operand has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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 23:04:45,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:45,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 242 [2023-08-23 23:04:45,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:49,330 INFO L124 PetriNetUnfolderBase]: 18268/27813 cut-off events. [2023-08-23 23:04:49,330 INFO L125 PetriNetUnfolderBase]: For 347683/347683 co-relation queries the response was YES. [2023-08-23 23:04:49,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198795 conditions, 27813 events. 18268/27813 cut-off events. For 347683/347683 co-relation queries the response was YES. Maximal size of possible extension queue 1220. Compared 191716 event pairs, 5186 based on Foata normal form. 51/27864 useless extension candidates. Maximal degree in co-relation 198739. Up to 14018 conditions per place. [2023-08-23 23:04:49,480 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 129 selfloop transitions, 29 changer transitions 128/286 dead transitions. [2023-08-23 23:04:49,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 286 transitions, 5196 flow [2023-08-23 23:04:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:04:49,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:04:49,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 461 transitions. [2023-08-23 23:04:49,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4762396694214876 [2023-08-23 23:04:49,482 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 461 transitions. [2023-08-23 23:04:49,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 461 transitions. [2023-08-23 23:04:49,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:49,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 461 transitions. [2023-08-23 23:04:49,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 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 23:04:49,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 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 23:04:49,485 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 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 23:04:49,485 INFO L175 Difference]: Start difference. First operand has 108 places, 205 transitions, 3593 flow. Second operand 4 states and 461 transitions. [2023-08-23 23:04:49,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 286 transitions, 5196 flow [2023-08-23 23:04:51,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 286 transitions, 5056 flow, removed 45 selfloop flow, removed 4 redundant places. [2023-08-23 23:04:51,834 INFO L231 Difference]: Finished difference. Result has 109 places, 122 transitions, 1964 flow [2023-08-23 23:04:51,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=3517, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1964, PETRI_PLACES=109, PETRI_TRANSITIONS=122} [2023-08-23 23:04:51,835 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2023-08-23 23:04:51,835 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 122 transitions, 1964 flow [2023-08-23 23:04:51,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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 23:04:51,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:51,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:51,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-23 23:04:51,835 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:51,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:51,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2054188906, now seen corresponding path program 1 times [2023-08-23 23:04:51,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:51,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73999978] [2023-08-23 23:04:51,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:51,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:51,973 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 23:04:51,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:51,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73999978] [2023-08-23 23:04:51,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73999978] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:51,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:51,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-23 23:04:51,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975910775] [2023-08-23 23:04:51,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:51,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-23 23:04:51,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:51,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-23 23:04:51,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-23 23:04:51,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 242 [2023-08-23 23:04:51,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 122 transitions, 1964 flow. Second operand has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 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 23:04:51,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:51,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 242 [2023-08-23 23:04:51,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:52,918 INFO L124 PetriNetUnfolderBase]: 4613/7632 cut-off events. [2023-08-23 23:04:52,919 INFO L125 PetriNetUnfolderBase]: For 123080/124290 co-relation queries the response was YES. [2023-08-23 23:04:52,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50646 conditions, 7632 events. 4613/7632 cut-off events. For 123080/124290 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 51411 event pairs, 508 based on Foata normal form. 990/8439 useless extension candidates. Maximal degree in co-relation 50589. Up to 3033 conditions per place. [2023-08-23 23:04:52,971 INFO L140 encePairwiseOnDemand]: 235/242 looper letters, 188 selfloop transitions, 15 changer transitions 58/286 dead transitions. [2023-08-23 23:04:52,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 286 transitions, 5012 flow [2023-08-23 23:04:52,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:04:52,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:04:52,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 859 transitions. [2023-08-23 23:04:52,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070838252656434 [2023-08-23 23:04:52,974 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 859 transitions. [2023-08-23 23:04:52,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 859 transitions. [2023-08-23 23:04:52,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:52,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 859 transitions. [2023-08-23 23:04:52,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.71428571428571) internal successors, (859), 7 states have internal predecessors, (859), 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 23:04:52,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 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 23:04:52,979 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 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 23:04:52,979 INFO L175 Difference]: Start difference. First operand has 109 places, 122 transitions, 1964 flow. Second operand 7 states and 859 transitions. [2023-08-23 23:04:52,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 286 transitions, 5012 flow [2023-08-23 23:04:53,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 286 transitions, 4740 flow, removed 95 selfloop flow, removed 7 redundant places. [2023-08-23 23:04:53,224 INFO L231 Difference]: Finished difference. Result has 106 places, 119 transitions, 1752 flow [2023-08-23 23:04:53,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1752, PETRI_PLACES=106, PETRI_TRANSITIONS=119} [2023-08-23 23:04:53,224 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 64 predicate places. [2023-08-23 23:04:53,224 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 119 transitions, 1752 flow [2023-08-23 23:04:53,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 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 23:04:53,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:53,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:53,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-23 23:04:53,225 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:53,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:53,226 INFO L85 PathProgramCache]: Analyzing trace with hash 697315801, now seen corresponding path program 1 times [2023-08-23 23:04:53,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:53,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436837607] [2023-08-23 23:04:53,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:53,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:53,397 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 23:04:53,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:53,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436837607] [2023-08-23 23:04:53,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436837607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:53,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:53,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-23 23:04:53,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361781260] [2023-08-23 23:04:53,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:53,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-23 23:04:53,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:53,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-23 23:04:53,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-23 23:04:53,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 242 [2023-08-23 23:04:53,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 119 transitions, 1752 flow. Second operand has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 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 23:04:53,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:53,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 242 [2023-08-23 23:04:53,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:54,375 INFO L124 PetriNetUnfolderBase]: 4019/6665 cut-off events. [2023-08-23 23:04:54,375 INFO L125 PetriNetUnfolderBase]: For 77265/77800 co-relation queries the response was YES. [2023-08-23 23:04:54,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44992 conditions, 6665 events. 4019/6665 cut-off events. For 77265/77800 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 44189 event pairs, 474 based on Foata normal form. 291/6788 useless extension candidates. Maximal degree in co-relation 44937. Up to 2743 conditions per place. [2023-08-23 23:04:54,407 INFO L140 encePairwiseOnDemand]: 235/242 looper letters, 147 selfloop transitions, 18 changer transitions 88/273 dead transitions. [2023-08-23 23:04:54,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 273 transitions, 4560 flow [2023-08-23 23:04:54,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-23 23:04:54,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-23 23:04:54,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1075 transitions. [2023-08-23 23:04:54,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935720844811754 [2023-08-23 23:04:54,410 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1075 transitions. [2023-08-23 23:04:54,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1075 transitions. [2023-08-23 23:04:54,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:54,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1075 transitions. [2023-08-23 23:04:54,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.44444444444444) internal successors, (1075), 9 states have internal predecessors, (1075), 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 23:04:54,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 242.0) internal successors, (2420), 10 states have internal predecessors, (2420), 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 23:04:54,416 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 242.0) internal successors, (2420), 10 states have internal predecessors, (2420), 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 23:04:54,416 INFO L175 Difference]: Start difference. First operand has 106 places, 119 transitions, 1752 flow. Second operand 9 states and 1075 transitions. [2023-08-23 23:04:54,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 273 transitions, 4560 flow [2023-08-23 23:04:54,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 273 transitions, 4424 flow, removed 38 selfloop flow, removed 6 redundant places. [2023-08-23 23:04:54,687 INFO L231 Difference]: Finished difference. Result has 111 places, 97 transitions, 1328 flow [2023-08-23 23:04:54,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1328, PETRI_PLACES=111, PETRI_TRANSITIONS=97} [2023-08-23 23:04:54,688 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 69 predicate places. [2023-08-23 23:04:54,688 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 97 transitions, 1328 flow [2023-08-23 23:04:54,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 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 23:04:54,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:54,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:54,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-23 23:04:54,689 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:54,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:54,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1207025528, now seen corresponding path program 1 times [2023-08-23 23:04:54,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:54,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520390641] [2023-08-23 23:04:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:54,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:55,067 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 23:04:55,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:55,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520390641] [2023-08-23 23:04:55,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520390641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:55,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:55,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:04:55,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074511122] [2023-08-23 23:04:55,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:55,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:04:55,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:55,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:04:55,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:04:55,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 242 [2023-08-23 23:04:55,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 97 transitions, 1328 flow. Second operand has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 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 23:04:55,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:55,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 242 [2023-08-23 23:04:55,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:55,700 INFO L124 PetriNetUnfolderBase]: 1930/3180 cut-off events. [2023-08-23 23:04:55,700 INFO L125 PetriNetUnfolderBase]: For 27818/27818 co-relation queries the response was YES. [2023-08-23 23:04:55,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20489 conditions, 3180 events. 1930/3180 cut-off events. For 27818/27818 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 16867 event pairs, 358 based on Foata normal form. 1/3181 useless extension candidates. Maximal degree in co-relation 20445. Up to 2072 conditions per place. [2023-08-23 23:04:55,723 INFO L140 encePairwiseOnDemand]: 231/242 looper letters, 55 selfloop transitions, 9 changer transitions 122/186 dead transitions. [2023-08-23 23:04:55,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 186 transitions, 2712 flow [2023-08-23 23:04:55,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-23 23:04:55,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-23 23:04:55,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 666 transitions. [2023-08-23 23:04:55,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45867768595041325 [2023-08-23 23:04:55,725 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 666 transitions. [2023-08-23 23:04:55,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 666 transitions. [2023-08-23 23:04:55,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:55,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 666 transitions. [2023-08-23 23:04:55,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 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 23:04:55,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 242.0) internal successors, (1694), 7 states have internal predecessors, (1694), 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 23:04:55,729 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 242.0) internal successors, (1694), 7 states have internal predecessors, (1694), 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 23:04:55,729 INFO L175 Difference]: Start difference. First operand has 111 places, 97 transitions, 1328 flow. Second operand 6 states and 666 transitions. [2023-08-23 23:04:55,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 186 transitions, 2712 flow [2023-08-23 23:04:55,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 186 transitions, 2439 flow, removed 52 selfloop flow, removed 15 redundant places. [2023-08-23 23:04:55,782 INFO L231 Difference]: Finished difference. Result has 99 places, 52 transitions, 563 flow [2023-08-23 23:04:55,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=563, PETRI_PLACES=99, PETRI_TRANSITIONS=52} [2023-08-23 23:04:55,783 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 57 predicate places. [2023-08-23 23:04:55,783 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 52 transitions, 563 flow [2023-08-23 23:04:55,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 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 23:04:55,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:55,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:55,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-23 23:04:55,783 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:55,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:55,784 INFO L85 PathProgramCache]: Analyzing trace with hash -957976752, now seen corresponding path program 2 times [2023-08-23 23:04:55,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:55,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055664553] [2023-08-23 23:04:55,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:55,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:04:56,560 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 23:04:56,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:04:56,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055664553] [2023-08-23 23:04:56,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055664553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:04:56,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:04:56,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-23 23:04:56,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544495624] [2023-08-23 23:04:56,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:04:56,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-23 23:04:56,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:04:56,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-23 23:04:56,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-23 23:04:56,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 242 [2023-08-23 23:04:56,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 52 transitions, 563 flow. Second operand has 7 states, 7 states have (on average 110.42857142857143) internal successors, (773), 7 states have internal predecessors, (773), 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 23:04:56,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:04:56,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 242 [2023-08-23 23:04:56,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:04:56,740 INFO L124 PetriNetUnfolderBase]: 359/645 cut-off events. [2023-08-23 23:04:56,740 INFO L125 PetriNetUnfolderBase]: For 5412/5422 co-relation queries the response was YES. [2023-08-23 23:04:56,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3809 conditions, 645 events. 359/645 cut-off events. For 5412/5422 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2686 event pairs, 55 based on Foata normal form. 7/644 useless extension candidates. Maximal degree in co-relation 3774. Up to 324 conditions per place. [2023-08-23 23:04:56,742 INFO L140 encePairwiseOnDemand]: 237/242 looper letters, 53 selfloop transitions, 5 changer transitions 19/81 dead transitions. [2023-08-23 23:04:56,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 81 transitions, 917 flow [2023-08-23 23:04:56,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:04:56,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:04:56,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 577 transitions. [2023-08-23 23:04:56,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4768595041322314 [2023-08-23 23:04:56,743 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 577 transitions. [2023-08-23 23:04:56,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 577 transitions. [2023-08-23 23:04:56,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:04:56,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 577 transitions. [2023-08-23 23:04:56,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.4) internal successors, (577), 5 states have internal predecessors, (577), 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 23:04:56,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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 23:04:56,746 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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 23:04:56,746 INFO L175 Difference]: Start difference. First operand has 99 places, 52 transitions, 563 flow. Second operand 5 states and 577 transitions. [2023-08-23 23:04:56,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 81 transitions, 917 flow [2023-08-23 23:04:56,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 81 transitions, 716 flow, removed 43 selfloop flow, removed 26 redundant places. [2023-08-23 23:04:56,756 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 394 flow [2023-08-23 23:04:56,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2023-08-23 23:04:56,757 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-08-23 23:04:56,757 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 394 flow [2023-08-23 23:04:56,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.42857142857143) internal successors, (773), 7 states have internal predecessors, (773), 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 23:04:56,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:04:56,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:56,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-23 23:04:56,757 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 23:04:56,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:04:56,758 INFO L85 PathProgramCache]: Analyzing trace with hash -95805658, now seen corresponding path program 3 times [2023-08-23 23:04:56,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:04:56,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302553688] [2023-08-23 23:04:56,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:04:56,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:04:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-23 23:04:56,786 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-23 23:04:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-23 23:04:56,836 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-23 23:04:56,837 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-23 23:04:56,837 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-23 23:04:56,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-23 23:04:56,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-23 23:04:56,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-23 23:04:56,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-23 23:04:56,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-23 23:04:56,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-23 23:04:56,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-23 23:04:56,843 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:04:56,847 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-23 23:04:56,847 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-23 23:04:56,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.08 11:04:56 BasicIcfg [2023-08-23 23:04:56,939 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-23 23:04:56,939 INFO L158 Benchmark]: Toolchain (without parser) took 57775.74ms. Allocated memory was 373.3MB in the beginning and 11.2GB in the end (delta: 10.8GB). Free memory was 347.6MB in the beginning and 9.3GB in the end (delta: -9.0GB). Peak memory consumption was 1.8GB. Max. memory is 16.0GB. [2023-08-23 23:04:56,939 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 373.3MB. Free memory is still 350.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:04:56,939 INFO L158 Benchmark]: CACSL2BoogieTranslator took 551.14ms. Allocated memory is still 373.3MB. Free memory was 347.6MB in the beginning and 323.7MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-23 23:04:56,940 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.46ms. Allocated memory is still 373.3MB. Free memory was 323.7MB in the beginning and 321.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-23 23:04:56,940 INFO L158 Benchmark]: Boogie Preprocessor took 27.96ms. Allocated memory is still 373.3MB. Free memory was 321.0MB in the beginning and 318.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:04:56,940 INFO L158 Benchmark]: RCFGBuilder took 720.06ms. Allocated memory is still 373.3MB. Free memory was 318.9MB in the beginning and 330.1MB in the end (delta: -11.2MB). Peak memory consumption was 25.0MB. Max. memory is 16.0GB. [2023-08-23 23:04:56,940 INFO L158 Benchmark]: TraceAbstraction took 56425.75ms. Allocated memory was 373.3MB in the beginning and 11.2GB in the end (delta: 10.8GB). Free memory was 329.1MB in the beginning and 9.3GB in the end (delta: -9.0GB). Peak memory consumption was 1.8GB. Max. memory is 16.0GB. [2023-08-23 23:04:56,948 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 373.3MB. Free memory is still 350.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 551.14ms. Allocated memory is still 373.3MB. Free memory was 347.6MB in the beginning and 323.7MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.46ms. Allocated memory is still 373.3MB. Free memory was 323.7MB in the beginning and 321.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.96ms. Allocated memory is still 373.3MB. Free memory was 321.0MB in the beginning and 318.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 720.06ms. Allocated memory is still 373.3MB. Free memory was 318.9MB in the beginning and 330.1MB in the end (delta: -11.2MB). Peak memory consumption was 25.0MB. Max. memory is 16.0GB. * TraceAbstraction took 56425.75ms. Allocated memory was 373.3MB in the beginning and 11.2GB in the end (delta: 10.8GB). Free memory was 329.1MB in the beginning and 9.3GB in the end (delta: -9.0GB). Peak memory consumption was 1.8GB. 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: 4.7s, 138 PlacesBefore, 42 PlacesAfterwards, 127 TransitionsBefore, 29 TransitionsAfterwards, 3090 CoEnabledTransitionPairs, 7 FixpointIterations, 43 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 111 TotalNumberOfCompositions, 7976 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3235, independent: 3013, independent conditional: 0, independent unconditional: 3013, dependent: 222, dependent conditional: 0, dependent unconditional: 222, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1658, independent: 1613, independent conditional: 0, independent unconditional: 1613, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3235, independent: 1400, independent conditional: 0, independent unconditional: 1400, dependent: 177, dependent conditional: 0, dependent unconditional: 177, unknown: 1658, unknown conditional: 0, unknown unconditional: 1658] , Statistics on independence cache: Total cache size (in pairs): 146, Positive cache size: 125, Positive conditional cache size: 0, Positive unconditional cache size: 125, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p2_EAX = 0; [L714] 0 int __unbuffered_p3_EAX = 0; [L716] 0 int __unbuffered_p3_EBX = 0; [L718] 0 int a = 0; [L720] 0 int b = 0; [L721] 0 _Bool main$tmp_guard0; [L722] 0 _Bool main$tmp_guard1; [L724] 0 int x = 0; [L726] 0 int y = 0; [L727] 0 _Bool y$flush_delayed; [L728] 0 int y$mem_tmp; [L729] 0 _Bool y$r_buff0_thd0; [L730] 0 _Bool y$r_buff0_thd1; [L731] 0 _Bool y$r_buff0_thd2; [L732] 0 _Bool y$r_buff0_thd3; [L733] 0 _Bool y$r_buff0_thd4; [L734] 0 _Bool y$r_buff1_thd0; [L735] 0 _Bool y$r_buff1_thd1; [L736] 0 _Bool y$r_buff1_thd2; [L737] 0 _Bool y$r_buff1_thd3; [L738] 0 _Bool y$r_buff1_thd4; [L739] 0 _Bool y$read_delayed; [L740] 0 int *y$read_delayed_var; [L741] 0 int y$w_buff0; [L742] 0 _Bool y$w_buff0_used; [L743] 0 int y$w_buff1; [L744] 0 _Bool y$w_buff1_used; [L746] 0 int z = 0; [L747] 0 _Bool weak$$choice0; [L748] 0 _Bool weak$$choice2; [L851] 0 pthread_t t1081; [L852] FCALL, FORK 0 pthread_create(&t1081, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1081, ((void *)0), P0, ((void *)0))=-3, t1081={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L853] 0 pthread_t t1082; [L854] FCALL, FORK 0 pthread_create(&t1082, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1082, ((void *)0), P1, ((void *)0))=-2, t1081={5:0}, t1082={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L855] 0 pthread_t t1083; [L856] FCALL, FORK 0 pthread_create(&t1083, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1083, ((void *)0), P2, ((void *)0))=-1, t1081={5:0}, t1082={6:0}, t1083={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L857] 0 pthread_t t1084; [L858] FCALL, FORK 0 pthread_create(&t1084, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1084, ((void *)0), P3, ((void *)0))=0, t1081={5:0}, t1082={6:0}, t1083={7:0}, t1084={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L787] 3 y$w_buff1 = y$w_buff0 [L788] 3 y$w_buff0 = 2 [L789] 3 y$w_buff1_used = y$w_buff0_used [L790] 3 y$w_buff0_used = (_Bool)1 [L791] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L791] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L792] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L793] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L794] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L795] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L796] 3 y$r_buff1_thd4 = y$r_buff0_thd4 [L797] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L800] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L817] 4 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L820] 4 a = 1 [L823] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L826] 4 __unbuffered_p3_EBX = b VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L752] 1 b = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L755] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L767] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L829] 4 y = y$w_buff0_used && y$r_buff0_thd4 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd4 ? y$w_buff1 : y) [L830] 4 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$w_buff0_used [L831] 4 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$w_buff1_used [L832] 4 y$r_buff0_thd4 = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$r_buff0_thd4 [L833] 4 y$r_buff1_thd4 = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$r_buff1_thd4 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L770] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L773] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L774] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L775] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L776] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L777] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L803] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L804] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L805] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L806] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L807] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L810] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L812] 3 return 0; [L760] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L762] 1 return 0; [L836] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L838] 4 return 0; [L780] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L782] 2 return 0; [L860] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L862] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L862] RET 0 assume_abort_if_not(main$tmp_guard0) [L864] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L865] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L866] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L867] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L868] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=1, main$tmp_guard1=0, t1081={5:0}, t1082={6:0}, t1083={7:0}, t1084={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L871] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L872] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L873] 0 y$flush_delayed = weak$$choice2 [L874] 0 y$mem_tmp = y [L875] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L876] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L877] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L878] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L879] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L880] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L881] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L882] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 0 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) [L883] 0 y = y$flush_delayed ? y$mem_tmp : y [L884] 0 y$flush_delayed = (_Bool)0 [L886] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 854]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 852]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 858]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 856]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 168 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 56.2s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 42.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 793 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 793 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 55 mSDsCounter, 146 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2478 IncrementalHoareTripleChecker+Invalid, 2624 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 146 mSolverCounterUnsat, 59 mSDtfsCounter, 2478 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4829occurred in iteration=14, InterpolantAutomatonStates: 113, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 388 NumberOfCodeBlocks, 388 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 340 ConstructedInterpolants, 0 QuantifiedInterpolants, 4333 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-23 23:04:56,973 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...