/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread_stateful01-2_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:15:54,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:15:54,467 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:15:54,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:15:54,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:15:54,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:15:54,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:15:54,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:15:54,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:15:54,485 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:15:54,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:15:54,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:15:54,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:15:54,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:15:54,487 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:15:54,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:15:54,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:15:54,488 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:15:54,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:15:54,488 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:15:54,488 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:15:54,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:15:54,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:15:54,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:15:54,489 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:15:54,489 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:15:54,490 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:15:54,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:15:54,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:15:54,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:15:54,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:15:54,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:15:54,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:15:54,491 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:15:54,491 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:15:54,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:15:54,491 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:15:54,491 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:15:54,492 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:15:54,492 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:15:54,492 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:15:54,492 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:15:54,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:15:54,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:15:54,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:15:54,686 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:15:54,687 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:15:54,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread_stateful01-2_bound2.i [2023-08-03 19:15:55,681 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:15:55,886 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:15:55,887 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread_stateful01-2_bound2.i [2023-08-03 19:15:55,900 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/392bc038d/694a73623ee44d74b973892e62db07c3/FLAG5babb5fb3 [2023-08-03 19:15:55,914 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/392bc038d/694a73623ee44d74b973892e62db07c3 [2023-08-03 19:15:55,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:15:55,920 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:15:55,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:15:55,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:15:55,924 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:15:55,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:15:55" (1/1) ... [2023-08-03 19:15:55,925 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec8acd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:55, skipping insertion in model container [2023-08-03 19:15:55,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:15:55" (1/1) ... [2023-08-03 19:15:55,964 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:15:56,205 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread_stateful01-2_bound2.i[30988,31001] [2023-08-03 19:15:56,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:15:56,218 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:15:56,241 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-03 19:15:56,242 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-03 19:15:56,256 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread_stateful01-2_bound2.i[30988,31001] [2023-08-03 19:15:56,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:15:56,281 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:15:56,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:56 WrapperNode [2023-08-03 19:15:56,283 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:15:56,284 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:15:56,284 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:15:56,284 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:15:56,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:56" (1/1) ... [2023-08-03 19:15:56,309 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:56" (1/1) ... [2023-08-03 19:15:56,325 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 95 [2023-08-03 19:15:56,326 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:15:56,326 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:15:56,326 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:15:56,326 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:15:56,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:56" (1/1) ... [2023-08-03 19:15:56,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:56" (1/1) ... [2023-08-03 19:15:56,343 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:56" (1/1) ... [2023-08-03 19:15:56,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:56" (1/1) ... [2023-08-03 19:15:56,360 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:56" (1/1) ... [2023-08-03 19:15:56,362 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:56" (1/1) ... [2023-08-03 19:15:56,363 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:56" (1/1) ... [2023-08-03 19:15:56,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:56" (1/1) ... [2023-08-03 19:15:56,365 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:15:56,366 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:15:56,366 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:15:56,366 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:15:56,366 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:56" (1/1) ... [2023-08-03 19:15:56,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:15:56,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:15:56,396 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) [2023-08-03 19:15:56,410 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 [2023-08-03 19:15:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:15:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:15:56,425 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:15:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:15:56,425 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:15:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:15:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 19:15:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:15:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:15:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:15:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:15:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:15:56,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:15:56,429 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 19:15:56,508 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:15:56,509 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:15:56,680 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:15:56,688 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:15:56,688 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 19:15:56,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:15:56 BoogieIcfgContainer [2023-08-03 19:15:56,690 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:15:56,693 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:15:56,693 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:15:56,695 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:15:56,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:15:55" (1/3) ... [2023-08-03 19:15:56,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e5958e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:15:56, skipping insertion in model container [2023-08-03 19:15:56,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:56" (2/3) ... [2023-08-03 19:15:56,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e5958e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:15:56, skipping insertion in model container [2023-08-03 19:15:56,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:15:56" (3/3) ... [2023-08-03 19:15:56,698 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread_stateful01-2_bound2.i [2023-08-03 19:15:56,705 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:15:56,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:15:56,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:15:56,712 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:15:56,810 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 19:15:56,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 119 transitions, 260 flow [2023-08-03 19:15:56,973 INFO L124 PetriNetUnfolderBase]: 26/248 cut-off events. [2023-08-03 19:15:56,973 INFO L125 PetriNetUnfolderBase]: For 8/14 co-relation queries the response was YES. [2023-08-03 19:15:56,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 248 events. 26/248 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 848 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 131. Up to 8 conditions per place. [2023-08-03 19:15:56,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 119 transitions, 260 flow [2023-08-03 19:15:56,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 109 transitions, 240 flow [2023-08-03 19:15:56,985 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:15:56,993 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 109 transitions, 240 flow [2023-08-03 19:15:56,998 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 109 transitions, 240 flow [2023-08-03 19:15:56,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 109 transitions, 240 flow [2023-08-03 19:15:57,035 INFO L124 PetriNetUnfolderBase]: 22/208 cut-off events. [2023-08-03 19:15:57,035 INFO L125 PetriNetUnfolderBase]: For 8/14 co-relation queries the response was YES. [2023-08-03 19:15:57,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 208 events. 22/208 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 622 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 111. Up to 8 conditions per place. [2023-08-03 19:15:57,038 INFO L119 LiptonReduction]: Number of co-enabled transitions 2518 [2023-08-03 19:15:59,200 INFO L134 LiptonReduction]: Checked pairs total: 7071 [2023-08-03 19:15:59,200 INFO L136 LiptonReduction]: Total number of compositions: 76 [2023-08-03 19:15:59,209 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:15:59,224 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=true, 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;@7d378d06, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:15:59,225 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:15:59,229 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:15:59,229 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-03 19:15:59,229 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:15:59,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:15:59,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 19:15:59,230 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:15:59,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:15:59,235 INFO L85 PathProgramCache]: Analyzing trace with hash 392187662, now seen corresponding path program 1 times [2023-08-03 19:15:59,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:15:59,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593184108] [2023-08-03 19:15:59,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:15:59,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:15:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:15:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:15:59,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:15:59,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593184108] [2023-08-03 19:15:59,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593184108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:15:59,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:15:59,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:15:59,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76308497] [2023-08-03 19:15:59,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:15:59,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:15:59,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:15:59,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:15:59,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:15:59,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 195 [2023-08-03 19:15:59,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:15:59,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:15:59,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 195 [2023-08-03 19:15:59,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:15:59,518 INFO L124 PetriNetUnfolderBase]: 381/749 cut-off events. [2023-08-03 19:15:59,518 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-03 19:15:59,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1497 conditions, 749 events. 381/749 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4172 event pairs, 147 based on Foata normal form. 0/611 useless extension candidates. Maximal degree in co-relation 1325. Up to 675 conditions per place. [2023-08-03 19:15:59,523 INFO L140 encePairwiseOnDemand]: 192/195 looper letters, 31 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-03 19:15:59,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 174 flow [2023-08-03 19:15:59,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:15:59,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:15:59,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2023-08-03 19:15:59,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5863247863247864 [2023-08-03 19:15:59,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 343 transitions. [2023-08-03 19:15:59,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 343 transitions. [2023-08-03 19:15:59,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:15:59,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 343 transitions. [2023-08-03 19:15:59,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:15:59,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:15:59,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:15:59,542 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 96 flow. Second operand 3 states and 343 transitions. [2023-08-03 19:15:59,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 174 flow [2023-08-03 19:15:59,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 43 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:15:59,546 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 104 flow [2023-08-03 19:15:59,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-03 19:15:59,549 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2023-08-03 19:15:59,549 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 104 flow [2023-08-03 19:15:59,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:15:59,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:15:59,550 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:15:59,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:15:59,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:15:59,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:15:59,550 INFO L85 PathProgramCache]: Analyzing trace with hash -715591623, now seen corresponding path program 1 times [2023-08-03 19:15:59,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:15:59,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394693617] [2023-08-03 19:15:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:15:59,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:15:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:15:59,571 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:15:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:15:59,608 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:15:59,608 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:15:59,609 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 19:15:59,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 19:15:59,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:15:59,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:15:59,611 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 19:15:59,613 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:15:59,613 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:15:59,645 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 19:15:59,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 151 transitions, 350 flow [2023-08-03 19:15:59,710 INFO L124 PetriNetUnfolderBase]: 117/784 cut-off events. [2023-08-03 19:15:59,710 INFO L125 PetriNetUnfolderBase]: For 72/88 co-relation queries the response was YES. [2023-08-03 19:15:59,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 784 events. 117/784 cut-off events. For 72/88 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4199 event pairs, 2 based on Foata normal form. 0/664 useless extension candidates. Maximal degree in co-relation 467. Up to 32 conditions per place. [2023-08-03 19:15:59,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 151 transitions, 350 flow [2023-08-03 19:15:59,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 141 transitions, 330 flow [2023-08-03 19:15:59,714 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:15:59,714 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 141 transitions, 330 flow [2023-08-03 19:15:59,714 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 141 transitions, 330 flow [2023-08-03 19:15:59,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 141 transitions, 330 flow [2023-08-03 19:15:59,749 INFO L124 PetriNetUnfolderBase]: 101/624 cut-off events. [2023-08-03 19:15:59,749 INFO L125 PetriNetUnfolderBase]: For 72/88 co-relation queries the response was YES. [2023-08-03 19:15:59,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 624 events. 101/624 cut-off events. For 72/88 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3090 event pairs, 2 based on Foata normal form. 0/536 useless extension candidates. Maximal degree in co-relation 387. Up to 32 conditions per place. [2023-08-03 19:15:59,758 INFO L119 LiptonReduction]: Number of co-enabled transitions 6916 [2023-08-03 19:16:01,869 INFO L134 LiptonReduction]: Checked pairs total: 25810 [2023-08-03 19:16:01,869 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-03 19:16:01,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:16:01,871 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=true, 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;@7d378d06, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:16:01,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:16:01,873 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:16:01,873 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-03 19:16:01,873 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:16:01,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:01,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 19:16:01,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:16:01,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:01,874 INFO L85 PathProgramCache]: Analyzing trace with hash 646989919, now seen corresponding path program 1 times [2023-08-03 19:16:01,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:01,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948000518] [2023-08-03 19:16:01,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:01,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:01,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:16:01,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:01,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948000518] [2023-08-03 19:16:01,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948000518] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:01,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:16:01,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:16:01,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487321866] [2023-08-03 19:16:01,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:01,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:16:01,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:01,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:16:01,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:16:01,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 237 [2023-08-03 19:16:01,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:01,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:01,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 237 [2023-08-03 19:16:01,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:06,610 INFO L124 PetriNetUnfolderBase]: 54246/79950 cut-off events. [2023-08-03 19:16:06,610 INFO L125 PetriNetUnfolderBase]: For 5074/5074 co-relation queries the response was YES. [2023-08-03 19:16:06,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157215 conditions, 79950 events. 54246/79950 cut-off events. For 5074/5074 co-relation queries the response was YES. Maximal size of possible extension queue 2339. Compared 599878 event pairs, 37616 based on Foata normal form. 0/72087 useless extension candidates. Maximal degree in co-relation 27382. Up to 73238 conditions per place. [2023-08-03 19:16:07,105 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 51 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-03 19:16:07,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 67 transitions, 288 flow [2023-08-03 19:16:07,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:16:07,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:16:07,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-08-03 19:16:07,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.620253164556962 [2023-08-03 19:16:07,110 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-08-03 19:16:07,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-08-03 19:16:07,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:07,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-08-03 19:16:07,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:07,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:07,115 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:07,115 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 166 flow. Second operand 3 states and 441 transitions. [2023-08-03 19:16:07,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 67 transitions, 288 flow [2023-08-03 19:16:07,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 67 transitions, 288 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:16:07,123 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 178 flow [2023-08-03 19:16:07,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-08-03 19:16:07,124 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 3 predicate places. [2023-08-03 19:16:07,124 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 178 flow [2023-08-03 19:16:07,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:07,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:07,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:16:07,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 19:16:07,125 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:16:07,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:07,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2025941927, now seen corresponding path program 1 times [2023-08-03 19:16:07,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:07,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401483438] [2023-08-03 19:16:07,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:07,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:07,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:16:07,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:07,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401483438] [2023-08-03 19:16:07,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401483438] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:07,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249893047] [2023-08-03 19:16:07,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:07,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:07,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:07,207 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:16:07,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 19:16:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:07,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:16:07,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:16:07,287 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:16:07,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249893047] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:07,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:16:07,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:16:07,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456790699] [2023-08-03 19:16:07,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:07,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:16:07,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:07,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:16:07,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:16:07,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 237 [2023-08-03 19:16:07,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:07,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:07,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 237 [2023-08-03 19:16:07,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:11,497 INFO L124 PetriNetUnfolderBase]: 54190/79953 cut-off events. [2023-08-03 19:16:11,498 INFO L125 PetriNetUnfolderBase]: For 5172/5172 co-relation queries the response was YES. [2023-08-03 19:16:11,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157364 conditions, 79953 events. 54190/79953 cut-off events. For 5172/5172 co-relation queries the response was YES. Maximal size of possible extension queue 2401. Compared 604418 event pairs, 38944 based on Foata normal form. 0/73021 useless extension candidates. Maximal degree in co-relation 157304. Up to 72169 conditions per place. [2023-08-03 19:16:11,867 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 62 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-08-03 19:16:11,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 78 transitions, 342 flow [2023-08-03 19:16:11,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:16:11,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:16:11,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-08-03 19:16:11,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6343178621659634 [2023-08-03 19:16:11,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-08-03 19:16:11,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-08-03 19:16:11,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:11,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-08-03 19:16:11,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:11,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:11,872 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:11,872 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 178 flow. Second operand 3 states and 451 transitions. [2023-08-03 19:16:11,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 78 transitions, 342 flow [2023-08-03 19:16:11,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 78 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:16:11,881 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 188 flow [2023-08-03 19:16:11,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2023-08-03 19:16:11,883 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 5 predicate places. [2023-08-03 19:16:11,883 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 188 flow [2023-08-03 19:16:11,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:11,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:11,884 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:16:11,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 19:16:12,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:12,089 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:16:12,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:12,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1673471335, now seen corresponding path program 1 times [2023-08-03 19:16:12,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:12,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957609787] [2023-08-03 19:16:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:12,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:12,174 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:16:12,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:12,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957609787] [2023-08-03 19:16:12,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957609787] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:12,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299319181] [2023-08-03 19:16:12,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:12,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:12,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:12,176 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:16:12,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 19:16:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:12,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:16:12,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:16:12,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:16:12,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299319181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:12,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:16:12,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:16:12,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116429357] [2023-08-03 19:16:12,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:12,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:16:12,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:12,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:16:12,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:16:12,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 237 [2023-08-03 19:16:12,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:12,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:12,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 237 [2023-08-03 19:16:12,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:16,371 INFO L124 PetriNetUnfolderBase]: 54106/79663 cut-off events. [2023-08-03 19:16:16,372 INFO L125 PetriNetUnfolderBase]: For 8263/8263 co-relation queries the response was YES. [2023-08-03 19:16:16,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160649 conditions, 79663 events. 54106/79663 cut-off events. For 8263/8263 co-relation queries the response was YES. Maximal size of possible extension queue 2388. Compared 601707 event pairs, 23680 based on Foata normal form. 49/73983 useless extension candidates. Maximal degree in co-relation 27831. Up to 72931 conditions per place. [2023-08-03 19:16:16,711 INFO L140 encePairwiseOnDemand]: 233/237 looper letters, 63 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2023-08-03 19:16:16,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 80 transitions, 361 flow [2023-08-03 19:16:16,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:16:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:16:16,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 707 transitions. [2023-08-03 19:16:16,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5966244725738397 [2023-08-03 19:16:16,713 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 707 transitions. [2023-08-03 19:16:16,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 707 transitions. [2023-08-03 19:16:16,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:16,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 707 transitions. [2023-08-03 19:16:16,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.4) internal successors, (707), 5 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:16,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:16,717 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:16,717 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 188 flow. Second operand 5 states and 707 transitions. [2023-08-03 19:16:16,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 80 transitions, 361 flow [2023-08-03 19:16:16,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 352 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:16:16,721 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 197 flow [2023-08-03 19:16:16,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=197, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-08-03 19:16:16,721 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 7 predicate places. [2023-08-03 19:16:16,722 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 197 flow [2023-08-03 19:16:16,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:16,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:16,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:16:16,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 19:16:16,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:16,927 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:16:16,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:16,927 INFO L85 PathProgramCache]: Analyzing trace with hash 759308338, now seen corresponding path program 1 times [2023-08-03 19:16:16,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:16,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124526390] [2023-08-03 19:16:16,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:16,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:16:16,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:16,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124526390] [2023-08-03 19:16:16,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124526390] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:16,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111718326] [2023-08-03 19:16:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:16,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:16,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:16,957 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:16:16,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 19:16:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:17,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:16:17,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 19:16:17,022 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:16:17,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111718326] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:17,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:16:17,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:16:17,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670162459] [2023-08-03 19:16:17,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:17,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:16:17,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:17,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:16:17,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:16:17,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 237 [2023-08-03 19:16:17,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:17,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:17,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 237 [2023-08-03 19:16:17,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:20,335 INFO L124 PetriNetUnfolderBase]: 41281/60243 cut-off events. [2023-08-03 19:16:20,335 INFO L125 PetriNetUnfolderBase]: For 6487/6487 co-relation queries the response was YES. [2023-08-03 19:16:20,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123719 conditions, 60243 events. 41281/60243 cut-off events. For 6487/6487 co-relation queries the response was YES. Maximal size of possible extension queue 1530. Compared 431598 event pairs, 27558 based on Foata normal form. 0/57407 useless extension candidates. Maximal degree in co-relation 52874. Up to 39665 conditions per place. [2023-08-03 19:16:20,651 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 72 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-08-03 19:16:20,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 407 flow [2023-08-03 19:16:20,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:16:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:16:20,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 459 transitions. [2023-08-03 19:16:20,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6455696202531646 [2023-08-03 19:16:20,653 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 459 transitions. [2023-08-03 19:16:20,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 459 transitions. [2023-08-03 19:16:20,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:20,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 459 transitions. [2023-08-03 19:16:20,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:20,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:20,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:20,655 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 197 flow. Second operand 3 states and 459 transitions. [2023-08-03 19:16:20,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 407 flow [2023-08-03 19:16:20,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 87 transitions, 400 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:16:20,660 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 202 flow [2023-08-03 19:16:20,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2023-08-03 19:16:20,661 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 8 predicate places. [2023-08-03 19:16:20,661 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 202 flow [2023-08-03 19:16:20,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:20,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:20,661 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:16:20,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 19:16:20,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:20,866 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:16:20,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:20,866 INFO L85 PathProgramCache]: Analyzing trace with hash -612832111, now seen corresponding path program 1 times [2023-08-03 19:16:20,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:20,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656979198] [2023-08-03 19:16:20,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:20,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:16:20,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:20,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656979198] [2023-08-03 19:16:20,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656979198] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:20,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705403476] [2023-08-03 19:16:20,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:20,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:20,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:20,961 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:16:20,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 19:16:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:21,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:16:21,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:21,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:16:21,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:16:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:16:21,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705403476] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:16:21,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:16:21,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:16:21,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491377192] [2023-08-03 19:16:21,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:16:21,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:16:21,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:21,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:16:21,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:16:21,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 237 [2023-08-03 19:16:21,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:21,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:21,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 237 [2023-08-03 19:16:21,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:24,324 INFO L124 PetriNetUnfolderBase]: 38782/57339 cut-off events. [2023-08-03 19:16:24,325 INFO L125 PetriNetUnfolderBase]: For 13411/13411 co-relation queries the response was YES. [2023-08-03 19:16:24,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121219 conditions, 57339 events. 38782/57339 cut-off events. For 13411/13411 co-relation queries the response was YES. Maximal size of possible extension queue 1501. Compared 412672 event pairs, 16737 based on Foata normal form. 7/55629 useless extension candidates. Maximal degree in co-relation 40488. Up to 53058 conditions per place. [2023-08-03 19:16:24,554 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 64 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2023-08-03 19:16:24,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 80 transitions, 368 flow [2023-08-03 19:16:24,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:16:24,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:16:24,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 578 transitions. [2023-08-03 19:16:24,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609704641350211 [2023-08-03 19:16:24,556 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 578 transitions. [2023-08-03 19:16:24,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 578 transitions. [2023-08-03 19:16:24,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:24,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 578 transitions. [2023-08-03 19:16:24,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:24,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:24,558 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:24,558 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 202 flow. Second operand 4 states and 578 transitions. [2023-08-03 19:16:24,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 80 transitions, 368 flow [2023-08-03 19:16:24,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 80 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:16:24,633 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 198 flow [2023-08-03 19:16:24,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2023-08-03 19:16:24,634 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2023-08-03 19:16:24,634 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 198 flow [2023-08-03 19:16:24,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:24,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:24,634 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:16:24,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 19:16:24,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:24,838 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:16:24,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:24,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1175991784, now seen corresponding path program 1 times [2023-08-03 19:16:24,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:24,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49637269] [2023-08-03 19:16:24,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:24,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:16:24,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:24,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49637269] [2023-08-03 19:16:24,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49637269] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:24,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769109172] [2023-08-03 19:16:24,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:24,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:24,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:24,912 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:16:24,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 19:16:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:24,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:16:24,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:25,001 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:16:25,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:16:25,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769109172] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:25,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:16:25,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:16:25,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833015879] [2023-08-03 19:16:25,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:25,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:16:25,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:25,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:16:25,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:16:25,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 237 [2023-08-03 19:16:25,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:25,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:25,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 237 [2023-08-03 19:16:25,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:27,609 INFO L124 PetriNetUnfolderBase]: 34722/50249 cut-off events. [2023-08-03 19:16:27,609 INFO L125 PetriNetUnfolderBase]: For 5061/5061 co-relation queries the response was YES. [2023-08-03 19:16:27,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107550 conditions, 50249 events. 34722/50249 cut-off events. For 5061/5061 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 343329 event pairs, 383 based on Foata normal form. 1225/50383 useless extension candidates. Maximal degree in co-relation 51957. Up to 40681 conditions per place. [2023-08-03 19:16:27,818 INFO L140 encePairwiseOnDemand]: 233/237 looper letters, 94 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2023-08-03 19:16:27,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 110 transitions, 492 flow [2023-08-03 19:16:27,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:16:27,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:16:27,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 737 transitions. [2023-08-03 19:16:27,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6219409282700422 [2023-08-03 19:16:27,820 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 737 transitions. [2023-08-03 19:16:27,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 737 transitions. [2023-08-03 19:16:27,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:27,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 737 transitions. [2023-08-03 19:16:27,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:27,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:27,823 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:27,823 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 198 flow. Second operand 5 states and 737 transitions. [2023-08-03 19:16:27,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 110 transitions, 492 flow [2023-08-03 19:16:28,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 110 transitions, 480 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:16:28,128 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 203 flow [2023-08-03 19:16:28,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2023-08-03 19:16:28,128 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2023-08-03 19:16:28,128 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 203 flow [2023-08-03 19:16:28,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:28,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:28,129 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:16:28,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-03 19:16:28,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:28,333 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:16:28,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:28,333 INFO L85 PathProgramCache]: Analyzing trace with hash -635077397, now seen corresponding path program 1 times [2023-08-03 19:16:28,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:28,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592678866] [2023-08-03 19:16:28,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:28,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:16:28,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:28,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592678866] [2023-08-03 19:16:28,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592678866] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:28,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015791424] [2023-08-03 19:16:28,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:28,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:28,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:28,394 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:16:28,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 19:16:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:28,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:16:28,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:28,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:16:28,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:16:28,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015791424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:28,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:16:28,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 19:16:28,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975734488] [2023-08-03 19:16:28,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:28,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:16:28,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:28,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:16:28,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:16:28,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 237 [2023-08-03 19:16:28,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:28,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:28,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 237 [2023-08-03 19:16:28,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:31,156 INFO L124 PetriNetUnfolderBase]: 33239/48807 cut-off events. [2023-08-03 19:16:31,156 INFO L125 PetriNetUnfolderBase]: For 20502/20502 co-relation queries the response was YES. [2023-08-03 19:16:31,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108255 conditions, 48807 events. 33239/48807 cut-off events. For 20502/20502 co-relation queries the response was YES. Maximal size of possible extension queue 1213. Compared 340542 event pairs, 27447 based on Foata normal form. 0/47800 useless extension candidates. Maximal degree in co-relation 52246. Up to 38105 conditions per place. [2023-08-03 19:16:31,544 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 73 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-08-03 19:16:31,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 87 transitions, 413 flow [2023-08-03 19:16:31,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:16:31,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:16:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 459 transitions. [2023-08-03 19:16:31,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6455696202531646 [2023-08-03 19:16:31,545 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 459 transitions. [2023-08-03 19:16:31,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 459 transitions. [2023-08-03 19:16:31,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:31,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 459 transitions. [2023-08-03 19:16:31,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:31,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:31,547 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:31,547 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 203 flow. Second operand 3 states and 459 transitions. [2023-08-03 19:16:31,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 87 transitions, 413 flow [2023-08-03 19:16:31,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 87 transitions, 406 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:16:31,608 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 208 flow [2023-08-03 19:16:31,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2023-08-03 19:16:31,609 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 11 predicate places. [2023-08-03 19:16:31,609 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 208 flow [2023-08-03 19:16:31,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:31,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:31,610 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2023-08-03 19:16:31,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-03 19:16:31,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:31,813 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:16:31,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:31,814 INFO L85 PathProgramCache]: Analyzing trace with hash -2060975898, now seen corresponding path program 1 times [2023-08-03 19:16:31,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:31,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878201958] [2023-08-03 19:16:31,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:31,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:16:31,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:31,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878201958] [2023-08-03 19:16:31,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878201958] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:31,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413251424] [2023-08-03 19:16:31,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:31,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:31,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:31,866 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:16:31,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 19:16:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:31,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:16:31,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:16:31,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:16:31,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:16:31,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413251424] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:16:31,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:16:31,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:16:31,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525580815] [2023-08-03 19:16:31,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:16:31,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:16:31,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:31,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:16:31,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:16:31,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 237 [2023-08-03 19:16:31,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 134.8) internal successors, (674), 5 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:31,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:31,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 237 [2023-08-03 19:16:31,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:34,660 INFO L124 PetriNetUnfolderBase]: 31688/46278 cut-off events. [2023-08-03 19:16:34,660 INFO L125 PetriNetUnfolderBase]: For 14600/14600 co-relation queries the response was YES. [2023-08-03 19:16:34,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102931 conditions, 46278 events. 31688/46278 cut-off events. For 14600/14600 co-relation queries the response was YES. Maximal size of possible extension queue 1083. Compared 314316 event pairs, 14972 based on Foata normal form. 245/46262 useless extension candidates. Maximal degree in co-relation 79584. Up to 36961 conditions per place. [2023-08-03 19:16:34,842 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 83 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2023-08-03 19:16:34,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 98 transitions, 448 flow [2023-08-03 19:16:34,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:16:34,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:16:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 596 transitions. [2023-08-03 19:16:34,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6286919831223629 [2023-08-03 19:16:34,844 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 596 transitions. [2023-08-03 19:16:34,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 596 transitions. [2023-08-03 19:16:34,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:34,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 596 transitions. [2023-08-03 19:16:34,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:34,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:34,846 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:34,846 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 208 flow. Second operand 4 states and 596 transitions. [2023-08-03 19:16:34,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 98 transitions, 448 flow [2023-08-03 19:16:35,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 98 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:16:35,655 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 204 flow [2023-08-03 19:16:35,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2023-08-03 19:16:35,655 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 13 predicate places. [2023-08-03 19:16:35,655 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 204 flow [2023-08-03 19:16:35,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.8) internal successors, (674), 5 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:35,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:35,656 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1] [2023-08-03 19:16:35,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-03 19:16:35,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:35,860 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:16:35,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:35,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1736883492, now seen corresponding path program 1 times [2023-08-03 19:16:35,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:35,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646042558] [2023-08-03 19:16:35,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:35,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 19:16:35,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:35,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646042558] [2023-08-03 19:16:35,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646042558] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:35,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:16:35,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:16:35,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563795353] [2023-08-03 19:16:35,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:35,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:16:35,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:35,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:16:35,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:16:35,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 237 [2023-08-03 19:16:35,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:35,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:35,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 237 [2023-08-03 19:16:35,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:36,955 INFO L124 PetriNetUnfolderBase]: 9538/18702 cut-off events. [2023-08-03 19:16:36,955 INFO L125 PetriNetUnfolderBase]: For 14796/14796 co-relation queries the response was YES. [2023-08-03 19:16:36,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45139 conditions, 18702 events. 9538/18702 cut-off events. For 14796/14796 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 163163 event pairs, 2902 based on Foata normal form. 8728/27258 useless extension candidates. Maximal degree in co-relation 32209. Up to 13092 conditions per place. [2023-08-03 19:16:37,021 INFO L140 encePairwiseOnDemand]: 221/237 looper letters, 66 selfloop transitions, 16 changer transitions 0/88 dead transitions. [2023-08-03 19:16:37,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 88 transitions, 499 flow [2023-08-03 19:16:37,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:16:37,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:16:37,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-08-03 19:16:37,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5963431786216596 [2023-08-03 19:16:37,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-08-03 19:16:37,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-08-03 19:16:37,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:37,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-08-03 19:16:37,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:37,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:37,024 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:37,024 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 204 flow. Second operand 3 states and 424 transitions. [2023-08-03 19:16:37,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 88 transitions, 499 flow [2023-08-03 19:16:37,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 88 transitions, 487 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:16:37,064 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 230 flow [2023-08-03 19:16:37,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2023-08-03 19:16:37,064 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 12 predicate places. [2023-08-03 19:16:37,064 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 230 flow [2023-08-03 19:16:37,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:37,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:37,065 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1] [2023-08-03 19:16:37,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 19:16:37,065 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:16:37,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:37,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1213567400, now seen corresponding path program 2 times [2023-08-03 19:16:37,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:37,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25808229] [2023-08-03 19:16:37,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:37,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:37,112 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:16:37,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:37,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25808229] [2023-08-03 19:16:37,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25808229] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:37,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363294289] [2023-08-03 19:16:37,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:16:37,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:37,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:37,114 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:16:37,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 19:16:37,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:16:37,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:16:37,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:16:37,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:37,215 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:16:37,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:16:37,227 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:16:37,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363294289] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:16:37,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:16:37,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:16:37,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059829616] [2023-08-03 19:16:37,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:16:37,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:16:37,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:37,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:16:37,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:16:37,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 237 [2023-08-03 19:16:37,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 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) [2023-08-03 19:16:37,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:37,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 237 [2023-08-03 19:16:37,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:37,907 INFO L124 PetriNetUnfolderBase]: 5822/12339 cut-off events. [2023-08-03 19:16:37,907 INFO L125 PetriNetUnfolderBase]: For 8361/8361 co-relation queries the response was YES. [2023-08-03 19:16:37,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31613 conditions, 12339 events. 5822/12339 cut-off events. For 8361/8361 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 104568 event pairs, 2162 based on Foata normal form. 513/12823 useless extension candidates. Maximal degree in co-relation 28577. Up to 4259 conditions per place. [2023-08-03 19:16:37,953 INFO L140 encePairwiseOnDemand]: 233/237 looper letters, 91 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2023-08-03 19:16:37,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 107 transitions, 560 flow [2023-08-03 19:16:37,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:16:37,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:16:37,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 605 transitions. [2023-08-03 19:16:37,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6381856540084389 [2023-08-03 19:16:37,954 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 605 transitions. [2023-08-03 19:16:37,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 605 transitions. [2023-08-03 19:16:37,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:37,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 605 transitions. [2023-08-03 19:16:37,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:37,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:37,957 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:37,957 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 230 flow. Second operand 4 states and 605 transitions. [2023-08-03 19:16:37,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 107 transitions, 560 flow [2023-08-03 19:16:37,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 107 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:16:38,000 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 234 flow [2023-08-03 19:16:38,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2023-08-03 19:16:38,000 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 16 predicate places. [2023-08-03 19:16:38,000 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 234 flow [2023-08-03 19:16:38,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 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) [2023-08-03 19:16:38,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:38,001 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:16:38,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-03 19:16:38,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-03 19:16:38,205 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:16:38,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:38,205 INFO L85 PathProgramCache]: Analyzing trace with hash 343273010, now seen corresponding path program 1 times [2023-08-03 19:16:38,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:38,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358632447] [2023-08-03 19:16:38,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:38,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:38,264 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:16:38,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:38,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358632447] [2023-08-03 19:16:38,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358632447] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:38,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879404997] [2023-08-03 19:16:38,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:38,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:38,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:38,285 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:16:38,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 19:16:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:38,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:16:38,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:16:38,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:16:38,412 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:16:38,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879404997] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:16:38,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:16:38,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:16:38,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809386594] [2023-08-03 19:16:38,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:16:38,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:16:38,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:38,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:16:38,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:16:38,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 237 [2023-08-03 19:16:38,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:38,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:38,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 237 [2023-08-03 19:16:38,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:39,207 INFO L124 PetriNetUnfolderBase]: 5808/12278 cut-off events. [2023-08-03 19:16:39,208 INFO L125 PetriNetUnfolderBase]: For 12597/12597 co-relation queries the response was YES. [2023-08-03 19:16:39,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33157 conditions, 12278 events. 5808/12278 cut-off events. For 12597/12597 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 103897 event pairs, 5277 based on Foata normal form. 28/12181 useless extension candidates. Maximal degree in co-relation 30156. Up to 9761 conditions per place. [2023-08-03 19:16:39,275 INFO L140 encePairwiseOnDemand]: 233/237 looper letters, 92 selfloop transitions, 3 changer transitions 1/108 dead transitions. [2023-08-03 19:16:39,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 108 transitions, 546 flow [2023-08-03 19:16:39,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:16:39,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:16:39,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 605 transitions. [2023-08-03 19:16:39,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6381856540084389 [2023-08-03 19:16:39,276 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 605 transitions. [2023-08-03 19:16:39,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 605 transitions. [2023-08-03 19:16:39,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:39,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 605 transitions. [2023-08-03 19:16:39,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:39,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:39,279 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:39,279 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 234 flow. Second operand 4 states and 605 transitions. [2023-08-03 19:16:39,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 108 transitions, 546 flow [2023-08-03 19:16:39,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 108 transitions, 542 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:16:39,372 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 244 flow [2023-08-03 19:16:39,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2023-08-03 19:16:39,372 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 20 predicate places. [2023-08-03 19:16:39,372 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 244 flow [2023-08-03 19:16:39,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:39,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:39,373 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:16:39,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 19:16:39,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 19:16:39,578 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:16:39,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:39,578 INFO L85 PathProgramCache]: Analyzing trace with hash -61604128, now seen corresponding path program 1 times [2023-08-03 19:16:39,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:39,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924167657] [2023-08-03 19:16:39,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:39,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:16:40,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:40,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924167657] [2023-08-03 19:16:40,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924167657] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:40,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834485179] [2023-08-03 19:16:40,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:40,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:40,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:40,304 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:16:40,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 19:16:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:40,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-03 19:16:40,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:40,484 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-08-03 19:16:40,499 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-03 19:16:40,552 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-08-03 19:16:40,679 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2023-08-03 19:16:40,762 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2023-08-03 19:16:40,853 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-08-03 19:16:40,898 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:16:40,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:16:41,223 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_624 (Array Int Int))) (let ((.cse0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_624) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 4294967296))) (or (not (= .cse0 |c_ULTIMATE.start_main_#t~pre13#1|)) (< 2147483647 .cse0)))) (forall ((v_ArrVal_624 (Array Int Int))) (let ((.cse1 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_624) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 4294967296))) (or (not (= .cse1 (+ |c_ULTIMATE.start_main_#t~pre13#1| 4294967296))) (<= .cse1 2147483647))))) is different from false [2023-08-03 19:16:41,442 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| (* |c_ULTIMATE.start_main_~asdf~0#1| 4)))) (and (forall ((v_ArrVal_624 (Array Int Int)) (v_ArrVal_622 Int)) (let ((.cse0 (mod (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| (store .cse1 .cse2 v_ArrVal_622)) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_624) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 4294967296))) (or (not (= .cse0 (+ 4294967297 |c_#pthreadsForks|))) (<= .cse0 2147483647)))) (forall ((v_ArrVal_624 (Array Int Int)) (v_ArrVal_622 Int)) (let ((.cse3 (mod (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| (store .cse1 .cse2 v_ArrVal_622)) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_624) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 4294967296))) (or (< 2147483647 .cse3) (not (= .cse3 (+ |c_#pthreadsForks| 1)))))))) is different from false [2023-08-03 19:16:41,458 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| (* |c_ULTIMATE.start_main_~asdf~0#1| 4) 4))) (and (forall ((v_ArrVal_624 (Array Int Int)) (v_ArrVal_622 Int)) (let ((.cse0 (mod (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| (store .cse1 .cse2 v_ArrVal_622)) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_624) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 4294967296))) (or (<= .cse0 2147483647) (not (= (+ 4294967297 |c_#pthreadsForks|) .cse0))))) (forall ((v_ArrVal_624 (Array Int Int)) (v_ArrVal_622 Int)) (let ((.cse3 (mod (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| (store .cse1 .cse2 v_ArrVal_622)) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_624) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 4294967296))) (or (< 2147483647 .cse3) (not (= (+ |c_#pthreadsForks| 1) .cse3))))))) is different from false [2023-08-03 19:16:41,495 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:16:41,495 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 53 [2023-08-03 19:16:41,501 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:16:41,502 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 58 [2023-08-03 19:16:41,505 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2023-08-03 19:16:41,531 INFO L322 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-08-03 19:16:41,531 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 1 [2023-08-03 19:16:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 6 not checked. [2023-08-03 19:16:41,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834485179] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:16:41,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:16:41,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 24 [2023-08-03 19:16:41,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753108615] [2023-08-03 19:16:41,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:16:41,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-03 19:16:41,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:41,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-03 19:16:41,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=398, Unknown=5, NotChecked=126, Total=600 [2023-08-03 19:16:41,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 237 [2023-08-03 19:16:41,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 244 flow. Second operand has 25 states, 25 states have (on average 93.12) internal successors, (2328), 25 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:41,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:41,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 237 [2023-08-03 19:16:41,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:45,716 INFO L124 PetriNetUnfolderBase]: 7002/13496 cut-off events. [2023-08-03 19:16:45,717 INFO L125 PetriNetUnfolderBase]: For 7190/7190 co-relation queries the response was YES. [2023-08-03 19:16:45,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36542 conditions, 13496 events. 7002/13496 cut-off events. For 7190/7190 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 106162 event pairs, 2202 based on Foata normal form. 135/13523 useless extension candidates. Maximal degree in co-relation 36215. Up to 7871 conditions per place. [2023-08-03 19:16:45,803 INFO L140 encePairwiseOnDemand]: 208/237 looper letters, 183 selfloop transitions, 30 changer transitions 0/223 dead transitions. [2023-08-03 19:16:45,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 223 transitions, 1075 flow [2023-08-03 19:16:45,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-03 19:16:45,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-03 19:16:45,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1547 transitions. [2023-08-03 19:16:45,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351617440225035 [2023-08-03 19:16:45,806 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1547 transitions. [2023-08-03 19:16:45,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1547 transitions. [2023-08-03 19:16:45,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:45,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1547 transitions. [2023-08-03 19:16:45,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 103.13333333333334) internal successors, (1547), 15 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:45,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:45,812 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:45,812 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 244 flow. Second operand 15 states and 1547 transitions. [2023-08-03 19:16:45,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 223 transitions, 1075 flow [2023-08-03 19:16:45,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 223 transitions, 1069 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 19:16:45,979 INFO L231 Difference]: Finished difference. Result has 96 places, 83 transitions, 420 flow [2023-08-03 19:16:45,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=420, PETRI_PLACES=96, PETRI_TRANSITIONS=83} [2023-08-03 19:16:45,980 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 36 predicate places. [2023-08-03 19:16:45,980 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 83 transitions, 420 flow [2023-08-03 19:16:45,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 93.12) internal successors, (2328), 25 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:45,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:45,981 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:16:45,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 19:16:46,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 19:16:46,188 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:16:46,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:46,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1013211400, now seen corresponding path program 2 times [2023-08-03 19:16:46,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:46,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352903089] [2023-08-03 19:16:46,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:46,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:16:46,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:46,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352903089] [2023-08-03 19:16:46,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352903089] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:46,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123348474] [2023-08-03 19:16:46,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:16:46,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:46,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:46,800 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:16:46,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 19:16:46,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:16:46,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:16:46,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-03 19:16:46,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:47,067 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-03 19:16:47,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:16:47,160 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2023-08-03 19:16:47,283 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-08-03 19:16:47,314 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:16:47,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:16:47,877 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2023-08-03 19:16:47,880 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 244 [2023-08-03 19:16:47,958 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-08-03 19:16:47,961 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 104 [2023-08-03 19:16:48,345 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:16:48,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123348474] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:16:48,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:16:48,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 30 [2023-08-03 19:16:48,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108087011] [2023-08-03 19:16:48,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:16:48,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-03 19:16:48,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:48,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-03 19:16:48,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=770, Unknown=0, NotChecked=0, Total=870 [2023-08-03 19:16:51,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 237 [2023-08-03 19:16:51,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 83 transitions, 420 flow. Second operand has 30 states, 30 states have (on average 118.63333333333334) internal successors, (3559), 30 states have internal predecessors, (3559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:51,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:51,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 237 [2023-08-03 19:16:51,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:54,777 INFO L124 PetriNetUnfolderBase]: 5605/11620 cut-off events. [2023-08-03 19:16:54,777 INFO L125 PetriNetUnfolderBase]: For 16740/16754 co-relation queries the response was YES. [2023-08-03 19:16:54,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40847 conditions, 11620 events. 5605/11620 cut-off events. For 16740/16754 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 94832 event pairs, 231 based on Foata normal form. 36/11638 useless extension candidates. Maximal degree in co-relation 40489. Up to 7273 conditions per place. [2023-08-03 19:16:54,853 INFO L140 encePairwiseOnDemand]: 223/237 looper letters, 238 selfloop transitions, 18 changer transitions 6/274 dead transitions. [2023-08-03 19:16:54,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 274 transitions, 1726 flow [2023-08-03 19:16:54,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-03 19:16:54,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-03 19:16:54,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2297 transitions. [2023-08-03 19:16:54,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384435067979372 [2023-08-03 19:16:54,857 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2297 transitions. [2023-08-03 19:16:54,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2297 transitions. [2023-08-03 19:16:54,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:54,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2297 transitions. [2023-08-03 19:16:54,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 127.61111111111111) internal successors, (2297), 18 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:54,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 237.0) internal successors, (4503), 19 states have internal predecessors, (4503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:54,865 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 237.0) internal successors, (4503), 19 states have internal predecessors, (4503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:54,865 INFO L175 Difference]: Start difference. First operand has 96 places, 83 transitions, 420 flow. Second operand 18 states and 2297 transitions. [2023-08-03 19:16:54,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 274 transitions, 1726 flow [2023-08-03 19:16:55,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 274 transitions, 1693 flow, removed 8 selfloop flow, removed 9 redundant places. [2023-08-03 19:16:55,109 INFO L231 Difference]: Finished difference. Result has 106 places, 86 transitions, 440 flow [2023-08-03 19:16:55,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=440, PETRI_PLACES=106, PETRI_TRANSITIONS=86} [2023-08-03 19:16:55,109 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 46 predicate places. [2023-08-03 19:16:55,109 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 86 transitions, 440 flow [2023-08-03 19:16:55,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 118.63333333333334) internal successors, (3559), 30 states have internal predecessors, (3559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:55,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:55,111 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:16:55,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 19:16:55,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 19:16:55,315 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:16:55,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:55,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1237311074, now seen corresponding path program 1 times [2023-08-03 19:16:55,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:55,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957587968] [2023-08-03 19:16:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:55,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:55,921 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:16:55,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:55,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957587968] [2023-08-03 19:16:55,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957587968] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:55,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227981925] [2023-08-03 19:16:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:55,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:55,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:55,923 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:16:55,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 19:16:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:56,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 60 conjunts are in the unsatisfiable core [2023-08-03 19:16:56,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:56,048 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-08-03 19:16:56,070 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-03 19:16:56,204 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-03 19:16:56,388 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-03 19:16:56,564 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-03 19:16:56,565 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-08-03 19:16:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:16:56,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:16:59,573 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:16:59,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227981925] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:16:59,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:16:59,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 14] total 35 [2023-08-03 19:16:59,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8349463] [2023-08-03 19:16:59,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:16:59,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-03 19:16:59,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:59,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-03 19:16:59,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1008, Unknown=0, NotChecked=0, Total=1190 [2023-08-03 19:17:05,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 237 [2023-08-03 19:17:05,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 86 transitions, 440 flow. Second operand has 35 states, 35 states have (on average 109.02857142857142) internal successors, (3816), 35 states have internal predecessors, (3816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:17:05,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:05,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 237 [2023-08-03 19:17:05,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:18,344 INFO L124 PetriNetUnfolderBase]: 5054/9847 cut-off events. [2023-08-03 19:17:18,345 INFO L125 PetriNetUnfolderBase]: For 11150/11191 co-relation queries the response was YES. [2023-08-03 19:17:18,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34003 conditions, 9847 events. 5054/9847 cut-off events. For 11150/11191 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 74817 event pairs, 143 based on Foata normal form. 306/10150 useless extension candidates. Maximal degree in co-relation 33839. Up to 4393 conditions per place. [2023-08-03 19:17:18,410 INFO L140 encePairwiseOnDemand]: 215/237 looper letters, 265 selfloop transitions, 24 changer transitions 0/297 dead transitions. [2023-08-03 19:17:18,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 297 transitions, 1883 flow [2023-08-03 19:17:18,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-03 19:17:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-03 19:17:18,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2375 transitions. [2023-08-03 19:17:18,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5010548523206751 [2023-08-03 19:17:18,415 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2375 transitions. [2023-08-03 19:17:18,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2375 transitions. [2023-08-03 19:17:18,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:18,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2375 transitions. [2023-08-03 19:17:18,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 118.75) internal successors, (2375), 20 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:17:18,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 237.0) internal successors, (4977), 21 states have internal predecessors, (4977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:17:18,441 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 237.0) internal successors, (4977), 21 states have internal predecessors, (4977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:17:18,441 INFO L175 Difference]: Start difference. First operand has 106 places, 86 transitions, 440 flow. Second operand 20 states and 2375 transitions. [2023-08-03 19:17:18,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 297 transitions, 1883 flow [2023-08-03 19:17:18,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 297 transitions, 1845 flow, removed 2 selfloop flow, removed 15 redundant places. [2023-08-03 19:17:18,685 INFO L231 Difference]: Finished difference. Result has 113 places, 86 transitions, 465 flow [2023-08-03 19:17:18,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=465, PETRI_PLACES=113, PETRI_TRANSITIONS=86} [2023-08-03 19:17:18,686 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 53 predicate places. [2023-08-03 19:17:18,686 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 86 transitions, 465 flow [2023-08-03 19:17:18,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 109.02857142857142) internal successors, (3816), 35 states have internal predecessors, (3816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:17:18,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:18,687 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:17:18,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 19:17:18,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-03 19:17:18,892 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:17:18,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:18,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1156269938, now seen corresponding path program 1 times [2023-08-03 19:17:18,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:18,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121582619] [2023-08-03 19:17:18,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:18,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:17:19,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:19,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121582619] [2023-08-03 19:17:19,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121582619] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:17:19,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375803238] [2023-08-03 19:17:19,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:19,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:17:19,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:17:19,413 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:17:19,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 19:17:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:19,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-03 19:17:19,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:17:19,597 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-03 19:17:19,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:17:19,705 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2023-08-03 19:17:19,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-08-03 19:17:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:17:19,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:17:20,402 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2023-08-03 19:17:20,405 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 112 [2023-08-03 19:17:20,432 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2023-08-03 19:17:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:17:20,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375803238] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:17:20,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:17:20,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-08-03 19:17:20,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795158796] [2023-08-03 19:17:20,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:17:20,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-03 19:17:20,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:20,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-03 19:17:20,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-08-03 19:17:21,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 237 [2023-08-03 19:17:21,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 86 transitions, 465 flow. Second operand has 19 states, 19 states have (on average 120.89473684210526) internal successors, (2297), 19 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:17:21,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:21,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 237 [2023-08-03 19:17:21,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:28,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 19:17:31,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 19:17:31,837 INFO L124 PetriNetUnfolderBase]: 4679/9472 cut-off events. [2023-08-03 19:17:31,837 INFO L125 PetriNetUnfolderBase]: For 14138/14179 co-relation queries the response was YES. [2023-08-03 19:17:31,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35151 conditions, 9472 events. 4679/9472 cut-off events. For 14138/14179 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 74071 event pairs, 258 based on Foata normal form. 56/9526 useless extension candidates. Maximal degree in co-relation 35117. Up to 6013 conditions per place. [2023-08-03 19:17:31,903 INFO L140 encePairwiseOnDemand]: 226/237 looper letters, 180 selfloop transitions, 12 changer transitions 0/204 dead transitions. [2023-08-03 19:17:31,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 204 transitions, 1337 flow [2023-08-03 19:17:31,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 19:17:31,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 19:17:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1448 transitions. [2023-08-03 19:17:31,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555427694668201 [2023-08-03 19:17:31,906 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1448 transitions. [2023-08-03 19:17:31,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1448 transitions. [2023-08-03 19:17:31,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:31,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1448 transitions. [2023-08-03 19:17:31,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.63636363636363) internal successors, (1448), 11 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:17:31,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 237.0) internal successors, (2844), 12 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:17:31,918 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 237.0) internal successors, (2844), 12 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:17:31,918 INFO L175 Difference]: Start difference. First operand has 113 places, 86 transitions, 465 flow. Second operand 11 states and 1448 transitions. [2023-08-03 19:17:31,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 204 transitions, 1337 flow [2023-08-03 19:17:32,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 204 transitions, 1245 flow, removed 4 selfloop flow, removed 25 redundant places. [2023-08-03 19:17:32,226 INFO L231 Difference]: Finished difference. Result has 98 places, 84 transitions, 386 flow [2023-08-03 19:17:32,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=386, PETRI_PLACES=98, PETRI_TRANSITIONS=84} [2023-08-03 19:17:32,226 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 38 predicate places. [2023-08-03 19:17:32,226 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 84 transitions, 386 flow [2023-08-03 19:17:32,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 120.89473684210526) internal successors, (2297), 19 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:17:32,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:32,228 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:17:32,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-03 19:17:32,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 19:17:32,433 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:17:32,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:32,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1622205282, now seen corresponding path program 2 times [2023-08-03 19:17:32,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:32,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965676656] [2023-08-03 19:17:32,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:32,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:17:32,458 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:17:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:17:32,500 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:17:32,500 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:17:32,501 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 19:17:32,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 19:17:32,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:17:32,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-03 19:17:32,501 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:17:32,504 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:17:32,504 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:17:32,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:17:32 BasicIcfg [2023-08-03 19:17:32,602 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:17:32,606 INFO L158 Benchmark]: Toolchain (without parser) took 96686.26ms. Allocated memory was 367.0MB in the beginning and 14.9GB in the end (delta: 14.5GB). Free memory was 324.1MB in the beginning and 3.8GB in the end (delta: -3.5GB). Peak memory consumption was 11.0GB. Max. memory is 16.0GB. [2023-08-03 19:17:32,607 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 367.0MB. Free memory was 323.7MB in the beginning and 323.5MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:17:32,607 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.18ms. Allocated memory is still 367.0MB. Free memory was 324.1MB in the beginning and 304.4MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 19:17:32,609 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.16ms. Allocated memory is still 367.0MB. Free memory was 304.0MB in the beginning and 301.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:17:32,609 INFO L158 Benchmark]: Boogie Preprocessor took 38.99ms. Allocated memory is still 367.0MB. Free memory was 301.9MB in the beginning and 300.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:17:32,610 INFO L158 Benchmark]: RCFGBuilder took 325.04ms. Allocated memory is still 367.0MB. Free memory was 300.4MB in the beginning and 285.1MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-03 19:17:32,610 INFO L158 Benchmark]: TraceAbstraction took 95913.44ms. Allocated memory was 367.0MB in the beginning and 14.9GB in the end (delta: 14.5GB). Free memory was 284.4MB in the beginning and 3.8GB in the end (delta: -3.5GB). Peak memory consumption was 11.0GB. Max. memory is 16.0GB. [2023-08-03 19:17:32,611 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 367.0MB. Free memory was 323.7MB in the beginning and 323.5MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 361.18ms. Allocated memory is still 367.0MB. Free memory was 324.1MB in the beginning and 304.4MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.16ms. Allocated memory is still 367.0MB. Free memory was 304.0MB in the beginning and 301.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.99ms. Allocated memory is still 367.0MB. Free memory was 301.9MB in the beginning and 300.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 325.04ms. Allocated memory is still 367.0MB. Free memory was 300.4MB in the beginning and 285.1MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 95913.44ms. Allocated memory was 367.0MB in the beginning and 14.9GB in the end (delta: 14.5GB). Free memory was 284.4MB in the beginning and 3.8GB in the end (delta: -3.5GB). Peak memory consumption was 11.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 257]: Unsoundness Warning unspecified type, defaulting to int C: short [257] - GenericResultAtLocation [Line: 257]: Unsoundness Warning unspecified type, defaulting to int C: short [257] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 106 PlacesBefore, 38 PlacesAfterwards, 109 TransitionsBefore, 37 TransitionsAfterwards, 2518 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 76 TotalNumberOfCompositions, 7071 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3446, independent: 3274, independent conditional: 0, independent unconditional: 3274, dependent: 172, dependent conditional: 0, dependent unconditional: 172, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1200, independent: 1177, independent conditional: 0, independent unconditional: 1177, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3446, independent: 2097, independent conditional: 0, independent unconditional: 2097, dependent: 149, dependent conditional: 0, dependent unconditional: 149, unknown: 1200, unknown conditional: 0, unknown unconditional: 1200] , Statistics on independence cache: Total cache size (in pairs): 151, Positive cache size: 140, Positive conditional cache size: 0, Positive unconditional cache size: 140, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 138 PlacesBefore, 60 PlacesAfterwards, 141 TransitionsBefore, 59 TransitionsAfterwards, 6916 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 86 TotalNumberOfCompositions, 25810 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10610, independent: 10262, independent conditional: 0, independent unconditional: 10262, dependent: 348, dependent conditional: 0, dependent unconditional: 348, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3126, independent: 3079, independent conditional: 0, independent unconditional: 3079, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10610, independent: 7183, independent conditional: 0, independent unconditional: 7183, dependent: 301, dependent conditional: 0, dependent unconditional: 301, unknown: 3126, unknown conditional: 0, unknown unconditional: 3126] , Statistics on independence cache: Total cache size (in pairs): 395, Positive cache size: 370, Positive conditional cache size: 0, Positive unconditional cache size: 370, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 727]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L692] 0 pthread_mutex_t ma, mb; [L693] 0 int data1, data2; [L716] 0 pthread_t t1[2], t2[2]; [L719] 0 data1 = 10 [L720] 0 data2 = 10 [L721] 0 int asdf=0; VAL [asdf=0, data1=10, data2=10, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L721] COND TRUE 0 asdf<2 [L721] FCALL, FORK 0 pthread_create(&t1[asdf], 0, thread1, 0) VAL [arg={0:0}, asdf=0, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t1[asdf], 0, thread1, 0)=-4, t1={5:0}, t2={6:0}] [L721] 0 asdf++ VAL [arg={0:0}, asdf=1, data1=10, data2=10, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L697] 1 data1++ [L721] COND TRUE 0 asdf<2 [L721] FCALL, FORK 0 pthread_create(&t1[asdf], 0, thread1, 0) VAL [arg={0:0}, arg={0:0}, asdf=1, data1=11, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t1[asdf], 0, thread1, 0)=-3, t1={5:0}, t2={6:0}] [L721] 0 asdf++ VAL [arg={0:0}, arg={0:0}, asdf=2, data1=11, data2=10, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L697] 2 data1++ VAL [arg={0:0}, arg={0:0}, data1=12, data2=10, ma={3:0}, mb={4:0}] [L700] 1 data2++ VAL [arg={0:0}, arg={0:0}, data1=12, data2=11, ma={3:0}, mb={4:0}] [L702] 1 return 0; [L700] 2 data2++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, data1=12, data2=12, ma={3:0}, mb={4:0}] [L702] 2 return 0; [L721] COND FALSE 0 !(asdf<2) [L722] 0 int asdf=0; VAL [\result={0:0}, arg={0:0}, arg={0:0}, asdf=0, asdf=2, data1=12, data2=12, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L722] COND TRUE 0 asdf<2 [L722] FCALL, FORK 0 pthread_create(&t2[asdf], 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=0, asdf=2, data1=12, data2=12, ma={3:0}, mb={4:0}, pthread_create(&t2[asdf], 0, thread2, 0)=-2, t1={5:0}, t2={6:0}] [L707] 3 data1+=5 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=17, data2=12, ma={3:0}, mb={4:0}] [L710] 3 data2-=6 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=17, data2=6, ma={3:0}, mb={4:0}] [L712] 3 return 0; [L722] 0 asdf++ VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, data1=17, data2=6, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L722] COND TRUE 0 asdf<2 [L722] FCALL, FORK 0 pthread_create(&t2[asdf], 0, thread2, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, data1=17, data2=6, ma={3:0}, mb={4:0}, pthread_create(&t2[asdf], 0, thread2, 0)=-1, t1={5:0}, t2={6:0}] [L707] 4 data1+=5 VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=22, data2=6, ma={3:0}, mb={4:0}] [L710] 4 data2-=6 VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=22, data2=0, ma={3:0}, mb={4:0}] [L712] 4 return 0; [L722] 0 asdf++ VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=2, asdf=2, data1=22, data2=0, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L722] COND FALSE 0 !(asdf<2) [L723] 0 int asdf=0; VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, data1=22, data2=0, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L723] COND TRUE 0 asdf<2 [L723] 0 t1[asdf] VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, data1=22, data2=0, ma={3:0}, mb={4:0}, t1={5:0}, t1[asdf]=-4, t2={6:0}] [L723] FCALL, JOIN 1 pthread_join(t1[asdf], 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, data1=22, data2=0, ma={3:0}, mb={4:0}, t1={5:0}, t1[asdf]=-4, t2={6:0}] [L723] 0 asdf++ VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, data1=22, data2=0, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L723] COND TRUE 0 asdf<2 [L723] 0 t1[asdf] VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, data1=22, data2=0, ma={3:0}, mb={4:0}, t1={5:0}, t1[asdf]=-3, t2={6:0}] [L723] FCALL, JOIN 2 pthread_join(t1[asdf], 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, data1=22, data2=0, ma={3:0}, mb={4:0}, t1={5:0}, t1[asdf]=-3, t2={6:0}] [L723] 0 asdf++ VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=2, asdf=2, asdf=2, data1=22, data2=0, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L723] COND FALSE 0 !(asdf<2) [L724] 0 int asdf=0; VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, asdf=2, data1=22, data2=0, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L724] COND TRUE 0 asdf<2 [L724] 0 t2[asdf] VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, asdf=2, data1=22, data2=0, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}, t2[asdf]=-2] [L724] FCALL, JOIN 3 pthread_join(t2[asdf], 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, asdf=2, data1=22, data2=0, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}, t2[asdf]=-2] [L724] 0 asdf++ VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, asdf=2, data1=22, data2=0, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L724] COND TRUE 0 asdf<2 [L724] 0 t2[asdf] VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, asdf=2, data1=22, data2=0, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}, t2[asdf]=-1] [L724] FCALL, JOIN 4 pthread_join(t2[asdf], 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, asdf=2, data1=22, data2=0, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}, t2[asdf]=-1] [L724] 0 asdf++ VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=2, asdf=2, asdf=2, asdf=2, data1=22, data2=0, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L724] COND FALSE 0 !(asdf<2) [L725] COND TRUE 0 data1!=16 && data2!=5 [L727] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=2, asdf=2, asdf=2, asdf=2, data1=22, data2=0, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] - UnprovableResult [Line: 722]: 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: 721]: 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 5 procedures, 139 locations, 3 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: 2.8s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60 IncrementalHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 60 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 167 locations, 3 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: 92.9s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 76.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 5127 SdHoareTripleChecker+Valid, 27.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4892 mSDsluCounter, 5977 SdHoareTripleChecker+Invalid, 25.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 662 IncrementalHoareTripleChecker+Unchecked, 5943 mSDsCounter, 101 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21108 IncrementalHoareTripleChecker+Invalid, 21874 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 101 mSolverCounterUnsat, 34 mSDtfsCounter, 21108 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1012 GetRequests, 832 SyntacticMatches, 13 SemanticMatches, 167 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1109 ImplicationChecksByTransitivity, 13.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=465occurred in iteration=14, InterpolantAutomatonStates: 105, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 1089 NumberOfCodeBlocks, 1089 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1397 ConstructedInterpolants, 69 QuantifiedInterpolants, 24935 SizeOfPredicates, 49 NumberOfNonLiveVariables, 3231 ConjunctsInSsa, 182 ConjunctsInUnsatCore, 36 InterpolantComputations, 7 PerfectInterpolantSequences, 358/494 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! [2023-08-03 19:17:32,662 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...