/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_stateful01-1_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:15:40,204 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:15:40,263 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:15:40,272 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:15:40,273 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:15:40,273 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:15:40,273 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:15:40,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:15:40,298 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:15:40,302 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:15:40,302 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:15:40,303 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:15:40,303 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:15:40,303 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:15:40,303 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:15:40,304 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:15:40,304 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:15:40,304 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:15:40,304 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:15:40,305 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:15:40,305 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:15:40,307 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:15:40,307 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:15:40,307 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:15:40,308 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:15:40,308 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:15:40,309 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:15:40,309 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:15:40,309 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:15:40,310 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:15:40,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:15:40,311 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:15:40,311 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:15:40,311 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:15:40,311 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:15:40,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:15:40,311 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:15:40,311 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:15:40,312 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:15:40,312 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:15:40,312 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:15:40,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:15:40,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:15:40,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:15:40,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:15:40,558 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:15:40,560 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:15:40,561 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread_stateful01-1_bound2.i [2023-08-03 19:15:41,760 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:15:41,990 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:15:41,990 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread_stateful01-1_bound2.i [2023-08-03 19:15:42,024 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b2d6a536/e22b0cb25abb4e9fabe486c5cbecae0c/FLAGe9a634e4a [2023-08-03 19:15:42,040 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b2d6a536/e22b0cb25abb4e9fabe486c5cbecae0c [2023-08-03 19:15:42,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:15:42,048 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:15:42,051 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:15:42,051 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:15:42,054 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:15:42,055 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:15:42" (1/1) ... [2023-08-03 19:15:42,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f2cd411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:42, skipping insertion in model container [2023-08-03 19:15:42,056 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:15:42" (1/1) ... [2023-08-03 19:15:42,110 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:15:42,343 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_stateful01-1_bound2.i[30988,31001] [2023-08-03 19:15:42,344 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:15:42,368 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:15:42,385 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-03 19:15:42,387 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-03 19:15:42,403 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_stateful01-1_bound2.i[30988,31001] [2023-08-03 19:15:42,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:15:42,436 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:15:42,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:42 WrapperNode [2023-08-03 19:15:42,437 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:15:42,438 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:15:42,438 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:15:42,438 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:15:42,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:42" (1/1) ... [2023-08-03 19:15:42,459 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:42" (1/1) ... [2023-08-03 19:15:42,480 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 95 [2023-08-03 19:15:42,480 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:15:42,481 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:15:42,481 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:15:42,481 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:15:42,489 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:42" (1/1) ... [2023-08-03 19:15:42,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:42" (1/1) ... [2023-08-03 19:15:42,492 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:42" (1/1) ... [2023-08-03 19:15:42,493 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:42" (1/1) ... [2023-08-03 19:15:42,498 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:42" (1/1) ... [2023-08-03 19:15:42,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:42" (1/1) ... [2023-08-03 19:15:42,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:42" (1/1) ... [2023-08-03 19:15:42,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:42" (1/1) ... [2023-08-03 19:15:42,507 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:15:42,507 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:15:42,508 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:15:42,508 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:15:42,508 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:42" (1/1) ... [2023-08-03 19:15:42,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:15:42,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:15:42,548 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 19:15:42,550 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 19:15:42,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:15:42,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:15:42,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:15:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:15:42,575 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:15:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:15:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 19:15:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:15:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:15:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:15:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:15:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:15:42,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:15:42,577 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 19:15:42,688 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:15:42,690 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:15:42,868 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:15:42,875 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:15:42,876 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 19:15:42,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:15:42 BoogieIcfgContainer [2023-08-03 19:15:42,878 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:15:42,880 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:15:42,880 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:15:42,884 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:15:42,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:15:42" (1/3) ... [2023-08-03 19:15:42,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f5274c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:15:42, skipping insertion in model container [2023-08-03 19:15:42,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:15:42" (2/3) ... [2023-08-03 19:15:42,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f5274c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:15:42, skipping insertion in model container [2023-08-03 19:15:42,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:15:42" (3/3) ... [2023-08-03 19:15:42,888 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread_stateful01-1_bound2.i [2023-08-03 19:15:42,898 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:15:42,907 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:15:42,907 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:15:42,908 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:15:43,011 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 19:15:43,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 119 transitions, 260 flow [2023-08-03 19:15:43,160 INFO L124 PetriNetUnfolderBase]: 26/248 cut-off events. [2023-08-03 19:15:43,161 INFO L125 PetriNetUnfolderBase]: For 8/14 co-relation queries the response was YES. [2023-08-03 19:15:43,167 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 19:15:43,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 119 transitions, 260 flow [2023-08-03 19:15:43,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 109 transitions, 240 flow [2023-08-03 19:15:43,174 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:15:43,186 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 109 transitions, 240 flow [2023-08-03 19:15:43,188 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 109 transitions, 240 flow [2023-08-03 19:15:43,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 109 transitions, 240 flow [2023-08-03 19:15:43,222 INFO L124 PetriNetUnfolderBase]: 22/208 cut-off events. [2023-08-03 19:15:43,222 INFO L125 PetriNetUnfolderBase]: For 8/14 co-relation queries the response was YES. [2023-08-03 19:15:43,223 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 19:15:43,226 INFO L119 LiptonReduction]: Number of co-enabled transitions 2518 [2023-08-03 19:15:45,882 INFO L134 LiptonReduction]: Checked pairs total: 7071 [2023-08-03 19:15:45,882 INFO L136 LiptonReduction]: Total number of compositions: 76 [2023-08-03 19:15:45,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:15:45,901 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;@19a4192f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:15:45,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:15:45,905 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:15:45,905 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-03 19:15:45,905 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:15:45,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:15:45,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 19:15:45,906 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 19:15:45,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:15:45,912 INFO L85 PathProgramCache]: Analyzing trace with hash 392187662, now seen corresponding path program 1 times [2023-08-03 19:15:45,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:15:45,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740814153] [2023-08-03 19:15:45,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:15:45,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:15:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:15:46,155 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 19:15:46,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:15:46,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740814153] [2023-08-03 19:15:46,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740814153] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:15:46,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:15:46,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:15:46,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230592331] [2023-08-03 19:15:46,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:15:46,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:15:46,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:15:46,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:15:46,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:15:46,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 195 [2023-08-03 19:15:46,225 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 19:15:46,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:15:46,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 195 [2023-08-03 19:15:46,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:15:46,344 INFO L124 PetriNetUnfolderBase]: 381/749 cut-off events. [2023-08-03 19:15:46,344 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-03 19:15:46,347 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 19:15:46,352 INFO L140 encePairwiseOnDemand]: 192/195 looper letters, 31 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-03 19:15:46,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 174 flow [2023-08-03 19:15:46,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:15:46,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:15:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2023-08-03 19:15:46,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5863247863247864 [2023-08-03 19:15:46,365 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 343 transitions. [2023-08-03 19:15:46,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 343 transitions. [2023-08-03 19:15:46,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:15:46,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 343 transitions. [2023-08-03 19:15:46,373 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 19:15:46,377 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 19:15:46,377 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 19:15:46,379 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 96 flow. Second operand 3 states and 343 transitions. [2023-08-03 19:15:46,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 174 flow [2023-08-03 19:15:46,382 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 19:15:46,384 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 104 flow [2023-08-03 19:15:46,386 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 19:15:46,388 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2023-08-03 19:15:46,389 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 104 flow [2023-08-03 19:15:46,389 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 19:15:46,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:15:46,389 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:15:46,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:15:46,390 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 19:15:46,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:15:46,390 INFO L85 PathProgramCache]: Analyzing trace with hash -715591623, now seen corresponding path program 1 times [2023-08-03 19:15:46,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:15:46,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766178786] [2023-08-03 19:15:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:15:46,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:15:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:15:46,421 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:15:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:15:46,454 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:15:46,455 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:15:46,456 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 19:15:46,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 19:15:46,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:15:46,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:15:46,459 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 19:15:46,462 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:15:46,462 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:15:46,486 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 19:15:46,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 151 transitions, 350 flow [2023-08-03 19:15:46,578 INFO L124 PetriNetUnfolderBase]: 117/784 cut-off events. [2023-08-03 19:15:46,578 INFO L125 PetriNetUnfolderBase]: For 72/88 co-relation queries the response was YES. [2023-08-03 19:15:46,583 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 19:15:46,583 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 151 transitions, 350 flow [2023-08-03 19:15:46,586 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 141 transitions, 330 flow [2023-08-03 19:15:46,586 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:15:46,587 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 141 transitions, 330 flow [2023-08-03 19:15:46,587 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 141 transitions, 330 flow [2023-08-03 19:15:46,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 141 transitions, 330 flow [2023-08-03 19:15:46,658 INFO L124 PetriNetUnfolderBase]: 101/624 cut-off events. [2023-08-03 19:15:46,659 INFO L125 PetriNetUnfolderBase]: For 72/88 co-relation queries the response was YES. [2023-08-03 19:15:46,662 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 19:15:46,676 INFO L119 LiptonReduction]: Number of co-enabled transitions 6916 [2023-08-03 19:15:49,149 INFO L134 LiptonReduction]: Checked pairs total: 25810 [2023-08-03 19:15:49,149 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-03 19:15:49,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:15:49,152 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;@19a4192f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:15:49,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:15:49,159 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:15:49,159 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-03 19:15:49,159 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:15:49,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:15:49,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 19:15:49,160 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 19:15:49,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:15:49,160 INFO L85 PathProgramCache]: Analyzing trace with hash 646989919, now seen corresponding path program 1 times [2023-08-03 19:15:49,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:15:49,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988887096] [2023-08-03 19:15:49,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:15:49,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:15:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:15:49,208 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 19:15:49,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:15:49,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988887096] [2023-08-03 19:15:49,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988887096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:15:49,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:15:49,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:15:49,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061945313] [2023-08-03 19:15:49,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:15:49,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:15:49,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:15:49,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:15:49,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:15:49,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 237 [2023-08-03 19:15:49,223 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 19:15:49,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:15:49,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 237 [2023-08-03 19:15:49,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:15:54,975 INFO L124 PetriNetUnfolderBase]: 54246/79950 cut-off events. [2023-08-03 19:15:54,976 INFO L125 PetriNetUnfolderBase]: For 5074/5074 co-relation queries the response was YES. [2023-08-03 19:15:55,105 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 19:15:55,580 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 51 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-03 19:15:55,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 67 transitions, 288 flow [2023-08-03 19:15:55,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:15:55,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:15:55,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-08-03 19:15:55,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.620253164556962 [2023-08-03 19:15:55,586 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-08-03 19:15:55,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-08-03 19:15:55,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:15:55,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-08-03 19:15:55,588 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 19:15:55,591 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 19:15:55,592 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 19:15:55,592 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 166 flow. Second operand 3 states and 441 transitions. [2023-08-03 19:15:55,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 67 transitions, 288 flow [2023-08-03 19:15:55,601 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 19:15:55,602 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 178 flow [2023-08-03 19:15:55,603 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 19:15:55,603 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 3 predicate places. [2023-08-03 19:15:55,603 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 178 flow [2023-08-03 19:15:55,604 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 19:15:55,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:15:55,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:15:55,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 19:15:55,604 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 19:15:55,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:15:55,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2025941927, now seen corresponding path program 1 times [2023-08-03 19:15:55,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:15:55,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190100691] [2023-08-03 19:15:55,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:15:55,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:15:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:15:55,699 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 19:15:55,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:15:55,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190100691] [2023-08-03 19:15:55,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190100691] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:15:55,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088705916] [2023-08-03 19:15:55,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:15:55,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:15:55,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:15:55,705 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 19:15:55,715 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 19:15:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:15:55,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:15:55,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:15:55,829 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 19:15:55,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:15:55,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088705916] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:15:55,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:15:55,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-03 19:15:55,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835892167] [2023-08-03 19:15:55,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:15:55,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:15:55,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:15:55,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:15:55,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:15:55,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 237 [2023-08-03 19:15:55,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states 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 19:15:55,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:15:55,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 237 [2023-08-03 19:15:55,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:00,626 INFO L124 PetriNetUnfolderBase]: 64414/89888 cut-off events. [2023-08-03 19:16:00,626 INFO L125 PetriNetUnfolderBase]: For 6140/6140 co-relation queries the response was YES. [2023-08-03 19:16:00,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181061 conditions, 89888 events. 64414/89888 cut-off events. For 6140/6140 co-relation queries the response was YES. Maximal size of possible extension queue 2506. Compared 609451 event pairs, 18550 based on Foata normal form. 0/82404 useless extension candidates. Maximal degree in co-relation 181001. Up to 74799 conditions per place. [2023-08-03 19:16:01,106 INFO L140 encePairwiseOnDemand]: 231/237 looper letters, 72 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2023-08-03 19:16:01,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 90 transitions, 412 flow [2023-08-03 19:16:01,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:16:01,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:16:01,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-03 19:16:01,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6385372714486639 [2023-08-03 19:16:01,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-03 19:16:01,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-03 19:16:01,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:01,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-03 19:16:01,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 19:16:01,111 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 19:16:01,112 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 19:16:01,112 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 178 flow. Second operand 3 states and 454 transitions. [2023-08-03 19:16:01,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 90 transitions, 412 flow [2023-08-03 19:16:01,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 90 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:16:01,150 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 209 flow [2023-08-03 19:16:01,150 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=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-08-03 19:16:01,153 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 5 predicate places. [2023-08-03 19:16:01,153 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 209 flow [2023-08-03 19:16:01,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states 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 19:16:01,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:01,154 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:16:01,160 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 19:16:01,359 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 19:16:01,360 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 19:16:01,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:01,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1673471335, now seen corresponding path program 1 times [2023-08-03 19:16:01,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:01,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552444169] [2023-08-03 19:16:01,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:01,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:01,448 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 19:16:01,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:01,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552444169] [2023-08-03 19:16:01,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552444169] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:01,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752770138] [2023-08-03 19:16:01,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:01,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:01,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:01,459 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 19:16:01,460 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 19:16:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:01,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:16:01,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:01,741 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 19:16:01,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:16:01,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752770138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:01,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:16:01,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:16:01,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295475250] [2023-08-03 19:16:01,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:01,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:16:01,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:01,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:16:01,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:16:01,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 237 [2023-08-03 19:16:01,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 209 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 19:16:01,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:01,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 237 [2023-08-03 19:16:01,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:06,932 INFO L124 PetriNetUnfolderBase]: 58218/85069 cut-off events. [2023-08-03 19:16:06,937 INFO L125 PetriNetUnfolderBase]: For 15737/15789 co-relation queries the response was YES. [2023-08-03 19:16:07,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184563 conditions, 85069 events. 58218/85069 cut-off events. For 15737/15789 co-relation queries the response was YES. Maximal size of possible extension queue 2501. Compared 641295 event pairs, 25550 based on Foata normal form. 49/79369 useless extension candidates. Maximal degree in co-relation 58962. Up to 78149 conditions per place. [2023-08-03 19:16:07,437 INFO L140 encePairwiseOnDemand]: 233/237 looper letters, 67 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-08-03 19:16:07,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 85 transitions, 404 flow [2023-08-03 19:16:07,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:16:07,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:16:07,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 707 transitions. [2023-08-03 19:16:07,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5966244725738397 [2023-08-03 19:16:07,442 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 707 transitions. [2023-08-03 19:16:07,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 707 transitions. [2023-08-03 19:16:07,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:07,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 707 transitions. [2023-08-03 19:16:07,444 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 19:16:07,448 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 19:16:07,449 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 19:16:07,449 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 209 flow. Second operand 5 states and 707 transitions. [2023-08-03 19:16:07,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 85 transitions, 404 flow [2023-08-03 19:16:07,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 85 transitions, 390 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:16:07,473 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 213 flow [2023-08-03 19:16:07,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2023-08-03 19:16:07,475 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 7 predicate places. [2023-08-03 19:16:07,475 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 213 flow [2023-08-03 19:16:07,476 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 19:16:07,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:07,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:16:07,485 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 19:16:07,684 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 19:16:07,685 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 19:16:07,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:07,685 INFO L85 PathProgramCache]: Analyzing trace with hash 291715411, now seen corresponding path program 1 times [2023-08-03 19:16:07,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:07,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725325836] [2023-08-03 19:16:07,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:07,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:07,744 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 19:16:07,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:07,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725325836] [2023-08-03 19:16:07,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725325836] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:07,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:16:07,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:16:07,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560942231] [2023-08-03 19:16:07,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:07,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:16:07,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:07,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:16:07,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:16:07,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 237 [2023-08-03 19:16:07,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 19:16:07,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:07,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 237 [2023-08-03 19:16:07,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:12,571 INFO L124 PetriNetUnfolderBase]: 57762/83415 cut-off events. [2023-08-03 19:16:12,571 INFO L125 PetriNetUnfolderBase]: For 14627/14627 co-relation queries the response was YES. [2023-08-03 19:16:12,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178688 conditions, 83415 events. 57762/83415 cut-off events. For 14627/14627 co-relation queries the response was YES. Maximal size of possible extension queue 2491. Compared 609611 event pairs, 42733 based on Foata normal form. 0/77783 useless extension candidates. Maximal degree in co-relation 77593. Up to 76636 conditions per place. [2023-08-03 19:16:13,192 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 68 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2023-08-03 19:16:13,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 85 transitions, 409 flow [2023-08-03 19:16:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:16:13,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:16:13,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-08-03 19:16:13,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6343178621659634 [2023-08-03 19:16:13,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-08-03 19:16:13,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-08-03 19:16:13,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:13,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-08-03 19:16:13,196 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 19:16:13,198 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 19:16:13,198 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 19:16:13,198 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 213 flow. Second operand 3 states and 451 transitions. [2023-08-03 19:16:13,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 85 transitions, 409 flow [2023-08-03 19:16:13,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 85 transitions, 402 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:16:13,206 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 221 flow [2023-08-03 19:16:13,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2023-08-03 19:16:13,207 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 8 predicate places. [2023-08-03 19:16:13,207 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 221 flow [2023-08-03 19:16:13,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 19:16:13,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:13,208 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:16:13,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 19:16:13,208 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 19:16:13,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:13,209 INFO L85 PathProgramCache]: Analyzing trace with hash -612832111, now seen corresponding path program 1 times [2023-08-03 19:16:13,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:13,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457702111] [2023-08-03 19:16:13,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:13,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:13,259 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 19:16:13,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:13,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457702111] [2023-08-03 19:16:13,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457702111] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:13,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448203125] [2023-08-03 19:16:13,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:13,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:13,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:13,262 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 19:16:13,264 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 19:16:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:13,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:16:13,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:13,362 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 19:16:13,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:16:13,386 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 19:16:13,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448203125] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:16:13,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:16:13,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:16:13,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330840913] [2023-08-03 19:16:13,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:16:13,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:16:13,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:13,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:16:13,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:16:13,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 237 [2023-08-03 19:16:13,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 221 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 19:16:13,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:13,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 237 [2023-08-03 19:16:13,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:18,041 INFO L124 PetriNetUnfolderBase]: 55710/80822 cut-off events. [2023-08-03 19:16:18,042 INFO L125 PetriNetUnfolderBase]: For 16733/16733 co-relation queries the response was YES. [2023-08-03 19:16:18,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175835 conditions, 80822 events. 55710/80822 cut-off events. For 16733/16733 co-relation queries the response was YES. Maximal size of possible extension queue 2391. Compared 592543 event pairs, 23803 based on Foata normal form. 7/76815 useless extension candidates. Maximal degree in co-relation 27285. Up to 74639 conditions per place. [2023-08-03 19:16:18,412 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 68 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2023-08-03 19:16:18,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 85 transitions, 408 flow [2023-08-03 19:16:18,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:16:18,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:16:18,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 578 transitions. [2023-08-03 19:16:18,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609704641350211 [2023-08-03 19:16:18,414 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 578 transitions. [2023-08-03 19:16:18,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 578 transitions. [2023-08-03 19:16:18,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:18,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 578 transitions. [2023-08-03 19:16:18,416 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 19:16:18,418 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 19:16:18,418 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 19:16:18,418 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 221 flow. Second operand 4 states and 578 transitions. [2023-08-03 19:16:18,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 85 transitions, 408 flow [2023-08-03 19:16:18,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 85 transitions, 406 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:16:18,426 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 216 flow [2023-08-03 19:16:18,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2023-08-03 19:16:18,427 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2023-08-03 19:16:18,427 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 216 flow [2023-08-03 19:16:18,427 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 19:16:18,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:18,427 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:16:18,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 19:16:18,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:18,633 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 19:16:18,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:18,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1175991784, now seen corresponding path program 1 times [2023-08-03 19:16:18,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:18,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893432176] [2023-08-03 19:16:18,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:18,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:18,710 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 19:16:18,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:18,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893432176] [2023-08-03 19:16:18,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893432176] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:18,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273110099] [2023-08-03 19:16:18,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:18,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:18,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:18,714 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 19:16:18,717 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 19:16:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:18,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:16:18,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:18,827 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 19:16:18,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:16:18,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273110099] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:18,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:16:18,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:16:18,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132623395] [2023-08-03 19:16:18,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:18,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:16:18,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:18,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:16:18,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:16:18,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 237 [2023-08-03 19:16:18,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 216 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 19:16:18,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:18,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 237 [2023-08-03 19:16:18,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:23,010 INFO L124 PetriNetUnfolderBase]: 55082/77474 cut-off events. [2023-08-03 19:16:23,011 INFO L125 PetriNetUnfolderBase]: For 12993/12993 co-relation queries the response was YES. [2023-08-03 19:16:23,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170077 conditions, 77474 events. 55082/77474 cut-off events. For 12993/12993 co-relation queries the response was YES. Maximal size of possible extension queue 2249. Compared 535914 event pairs, 1947 based on Foata normal form. 1395/75259 useless extension candidates. Maximal degree in co-relation 83646. Up to 66587 conditions per place. [2023-08-03 19:16:23,601 INFO L140 encePairwiseOnDemand]: 233/237 looper letters, 104 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2023-08-03 19:16:23,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 121 transitions, 576 flow [2023-08-03 19:16:23,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:16:23,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:16:23,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 737 transitions. [2023-08-03 19:16:23,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6219409282700422 [2023-08-03 19:16:23,603 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 737 transitions. [2023-08-03 19:16:23,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 737 transitions. [2023-08-03 19:16:23,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:23,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 737 transitions. [2023-08-03 19:16:23,605 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 19:16:23,607 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 19:16:23,608 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 19:16:23,608 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 216 flow. Second operand 5 states and 737 transitions. [2023-08-03 19:16:23,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 121 transitions, 576 flow [2023-08-03 19:16:23,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 121 transitions, 564 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:16:23,633 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 219 flow [2023-08-03 19:16:23,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2023-08-03 19:16:23,635 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2023-08-03 19:16:23,636 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 219 flow [2023-08-03 19:16:23,636 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 19:16:23,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:23,636 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:16:23,648 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 19:16:23,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:23,841 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 19:16:23,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:23,842 INFO L85 PathProgramCache]: Analyzing trace with hash -462411144, now seen corresponding path program 1 times [2023-08-03 19:16:23,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:23,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735053057] [2023-08-03 19:16:23,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:23,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:16:23,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:23,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735053057] [2023-08-03 19:16:23,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735053057] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:23,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497223844] [2023-08-03 19:16:23,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:23,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:23,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:23,933 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 19:16:23,936 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 19:16:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:24,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:16:24,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:24,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:16:24,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:16:24,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497223844] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:24,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:16:24,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:16:24,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532006885] [2023-08-03 19:16:24,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:24,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:16:24,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:24,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:16:24,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:16:24,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 237 [2023-08-03 19:16:24,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states 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 19:16:24,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:24,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 237 [2023-08-03 19:16:24,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:27,248 INFO L124 PetriNetUnfolderBase]: 38670/55883 cut-off events. [2023-08-03 19:16:27,248 INFO L125 PetriNetUnfolderBase]: For 21701/21791 co-relation queries the response was YES. [2023-08-03 19:16:27,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126986 conditions, 55883 events. 38670/55883 cut-off events. For 21701/21791 co-relation queries the response was YES. Maximal size of possible extension queue 1469. Compared 387177 event pairs, 22227 based on Foata normal form. 0/53890 useless extension candidates. Maximal degree in co-relation 63499. Up to 35376 conditions per place. [2023-08-03 19:16:27,562 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 77 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2023-08-03 19:16:27,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 457 flow [2023-08-03 19:16:27,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:16:27,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:16:27,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 459 transitions. [2023-08-03 19:16:27,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6455696202531646 [2023-08-03 19:16:27,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 459 transitions. [2023-08-03 19:16:27,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 459 transitions. [2023-08-03 19:16:27,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:27,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 459 transitions. [2023-08-03 19:16:27,566 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 19:16:27,567 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 19:16:27,567 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 19:16:27,567 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 219 flow. Second operand 3 states and 459 transitions. [2023-08-03 19:16:27,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 457 flow [2023-08-03 19:16:27,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 93 transitions, 450 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:16:27,578 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 227 flow [2023-08-03 19:16:27,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2023-08-03 19:16:27,582 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 11 predicate places. [2023-08-03 19:16:27,582 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 227 flow [2023-08-03 19:16:27,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states 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 19:16:27,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:27,583 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 19:16:27,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 19:16:27,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:27,787 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 19:16:27,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:27,788 INFO L85 PathProgramCache]: Analyzing trace with hash 598689729, now seen corresponding path program 1 times [2023-08-03 19:16:27,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:27,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305772814] [2023-08-03 19:16:27,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:27,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:27,861 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 19:16:27,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:27,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305772814] [2023-08-03 19:16:27,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305772814] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:27,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48115335] [2023-08-03 19:16:27,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:27,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:27,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:27,863 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 19:16:27,885 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 19:16:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:27,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:16:27,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:27,960 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 19:16:27,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:16:27,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48115335] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:27,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:16:27,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 19:16:27,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16792296] [2023-08-03 19:16:27,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:27,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:16:27,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:27,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:16:27,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:16:27,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 237 [2023-08-03 19:16:27,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 227 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 19:16:27,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:27,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 237 [2023-08-03 19:16:27,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:31,185 INFO L124 PetriNetUnfolderBase]: 36936/53766 cut-off events. [2023-08-03 19:16:31,186 INFO L125 PetriNetUnfolderBase]: For 27626/27726 co-relation queries the response was YES. [2023-08-03 19:16:31,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125037 conditions, 53766 events. 36936/53766 cut-off events. For 27626/27726 co-relation queries the response was YES. Maximal size of possible extension queue 1343. Compared 374449 event pairs, 27684 based on Foata normal form. 1218/53795 useless extension candidates. Maximal degree in co-relation 62929. Up to 41788 conditions per place. [2023-08-03 19:16:31,697 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 76 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2023-08-03 19:16:31,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 91 transitions, 449 flow [2023-08-03 19:16:31,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:16:31,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:16:31,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 459 transitions. [2023-08-03 19:16:31,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6455696202531646 [2023-08-03 19:16:31,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 459 transitions. [2023-08-03 19:16:31,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 459 transitions. [2023-08-03 19:16:31,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:31,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 459 transitions. [2023-08-03 19:16:31,700 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 19:16:31,701 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 19:16:31,702 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 19:16:31,702 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 227 flow. Second operand 3 states and 459 transitions. [2023-08-03 19:16:31,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 91 transitions, 449 flow [2023-08-03 19:16:31,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 91 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:16:31,816 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 236 flow [2023-08-03 19:16:31,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2023-08-03 19:16:31,816 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 13 predicate places. [2023-08-03 19:16:31,816 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 236 flow [2023-08-03 19:16:31,817 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 19:16:31,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:31,817 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 19:16:31,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 19:16:32,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:32,021 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 19:16:32,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:32,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2060975898, now seen corresponding path program 1 times [2023-08-03 19:16:32,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:32,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730069475] [2023-08-03 19:16:32,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:32,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:32,103 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 19:16:32,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:32,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730069475] [2023-08-03 19:16:32,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730069475] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:32,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084940948] [2023-08-03 19:16:32,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:32,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:32,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:32,107 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 19:16:32,132 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 19:16:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:32,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:16:32,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:32,237 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 19:16:32,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:16:32,262 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 19:16:32,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084940948] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:16:32,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:16:32,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:16:32,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456414037] [2023-08-03 19:16:32,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:16:32,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:16:32,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:32,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:16:32,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:16:32,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 237 [2023-08-03 19:16:32,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 236 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 19:16:32,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:32,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 237 [2023-08-03 19:16:32,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:35,455 INFO L124 PetriNetUnfolderBase]: 35557/51621 cut-off events. [2023-08-03 19:16:35,455 INFO L125 PetriNetUnfolderBase]: For 20577/20577 co-relation queries the response was YES. [2023-08-03 19:16:35,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120742 conditions, 51621 events. 35557/51621 cut-off events. For 20577/20577 co-relation queries the response was YES. Maximal size of possible extension queue 1255. Compared 352112 event pairs, 15068 based on Foata normal form. 245/51164 useless extension candidates. Maximal degree in co-relation 92891. Up to 41887 conditions per place. [2023-08-03 19:16:35,699 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 92 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2023-08-03 19:16:35,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 108 transitions, 530 flow [2023-08-03 19:16:35,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:16:35,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:16:35,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 596 transitions. [2023-08-03 19:16:35,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6286919831223629 [2023-08-03 19:16:35,701 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 596 transitions. [2023-08-03 19:16:35,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 596 transitions. [2023-08-03 19:16:35,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:35,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 596 transitions. [2023-08-03 19:16:35,703 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 19:16:35,705 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 19:16:35,705 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 19:16:35,705 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 236 flow. Second operand 4 states and 596 transitions. [2023-08-03 19:16:35,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 108 transitions, 530 flow [2023-08-03 19:16:36,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 108 transitions, 528 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:16:36,724 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 232 flow [2023-08-03 19:16:36,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2023-08-03 19:16:36,725 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 15 predicate places. [2023-08-03 19:16:36,725 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 232 flow [2023-08-03 19:16:36,725 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 19:16:36,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:36,726 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 19:16:36,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 19:16:36,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:36,927 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 19:16:36,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:36,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1319745386, now seen corresponding path program 1 times [2023-08-03 19:16:36,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:36,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043991087] [2023-08-03 19:16:36,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:36,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:37,049 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:16:37,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:37,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043991087] [2023-08-03 19:16:37,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043991087] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:37,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:16:37,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:16:37,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094592046] [2023-08-03 19:16:37,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:37,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:16:37,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:37,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:16:37,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:16:37,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 237 [2023-08-03 19:16:37,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 232 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 19:16:37,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:37,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 237 [2023-08-03 19:16:37,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:38,367 INFO L124 PetriNetUnfolderBase]: 9548/18712 cut-off events. [2023-08-03 19:16:38,367 INFO L125 PetriNetUnfolderBase]: For 15126/15126 co-relation queries the response was YES. [2023-08-03 19:16:38,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46872 conditions, 18712 events. 9548/18712 cut-off events. For 15126/15126 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 162810 event pairs, 2421 based on Foata normal form. 8728/27268 useless extension candidates. Maximal degree in co-relation 33638. Up to 13102 conditions per place. [2023-08-03 19:16:38,465 INFO L140 encePairwiseOnDemand]: 221/237 looper letters, 69 selfloop transitions, 16 changer transitions 0/92 dead transitions. [2023-08-03 19:16:38,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 92 transitions, 535 flow [2023-08-03 19:16:38,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:16:38,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:16:38,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-08-03 19:16:38,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5963431786216596 [2023-08-03 19:16:38,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-08-03 19:16:38,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-08-03 19:16:38,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:38,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-08-03 19:16:38,469 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 19:16:38,470 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 19:16:38,470 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 19:16:38,470 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 232 flow. Second operand 3 states and 424 transitions. [2023-08-03 19:16:38,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 92 transitions, 535 flow [2023-08-03 19:16:38,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 92 transitions, 523 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:16:38,683 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 258 flow [2023-08-03 19:16:38,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2023-08-03 19:16:38,684 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 14 predicate places. [2023-08-03 19:16:38,684 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 258 flow [2023-08-03 19:16:38,684 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 19:16:38,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:38,684 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 19:16:38,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 19:16:38,685 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 19:16:38,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:38,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1213567400, now seen corresponding path program 2 times [2023-08-03 19:16:38,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:38,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229633023] [2023-08-03 19:16:38,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:38,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:38,766 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 19:16:38,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:38,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229633023] [2023-08-03 19:16:38,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229633023] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:38,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495699949] [2023-08-03 19:16:38,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:16:38,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:38,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:38,769 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 19:16:38,771 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 19:16:38,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:16:38,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:16:38,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:16:38,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:38,955 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 19:16:38,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:16:38,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495699949] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:38,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:16:38,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2023-08-03 19:16:38,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54156124] [2023-08-03 19:16:38,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:38,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:16:38,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:38,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:16:38,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-03 19:16:38,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 237 [2023-08-03 19:16:38,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 131.6) internal successors, (658), 5 states have internal predecessors, (658), 0 states have call successors, (0), 0 states 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 19:16:38,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:38,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 237 [2023-08-03 19:16:38,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:40,319 INFO L124 PetriNetUnfolderBase]: 8389/17624 cut-off events. [2023-08-03 19:16:40,319 INFO L125 PetriNetUnfolderBase]: For 11612/11612 co-relation queries the response was YES. [2023-08-03 19:16:40,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46588 conditions, 17624 events. 8389/17624 cut-off events. For 11612/11612 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 157030 event pairs, 4794 based on Foata normal form. 5/17571 useless extension candidates. Maximal degree in co-relation 31281. Up to 14019 conditions per place. [2023-08-03 19:16:40,391 INFO L140 encePairwiseOnDemand]: 231/237 looper letters, 129 selfloop transitions, 12 changer transitions 0/153 dead transitions. [2023-08-03 19:16:40,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 153 transitions, 876 flow [2023-08-03 19:16:40,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:16:40,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:16:40,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 759 transitions. [2023-08-03 19:16:40,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.640506329113924 [2023-08-03 19:16:40,398 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 759 transitions. [2023-08-03 19:16:40,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 759 transitions. [2023-08-03 19:16:40,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:40,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 759 transitions. [2023-08-03 19:16:40,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states 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 19:16:40,402 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 19:16:40,402 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 19:16:40,402 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 258 flow. Second operand 5 states and 759 transitions. [2023-08-03 19:16:40,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 153 transitions, 876 flow [2023-08-03 19:16:40,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 153 transitions, 837 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:16:40,511 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 310 flow [2023-08-03 19:16:40,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2023-08-03 19:16:40,512 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 19 predicate places. [2023-08-03 19:16:40,512 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 310 flow [2023-08-03 19:16:40,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.6) internal successors, (658), 5 states have internal predecessors, (658), 0 states have call successors, (0), 0 states 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 19:16:40,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:40,513 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, 1, 1] [2023-08-03 19:16:40,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 19:16:40,717 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,SelfDestructingSolverStorable12 [2023-08-03 19:16:40,718 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 19:16:40,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:40,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1410299268, now seen corresponding path program 1 times [2023-08-03 19:16:40,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:40,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007510258] [2023-08-03 19:16:40,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:40,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:40,826 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 19:16:40,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:40,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007510258] [2023-08-03 19:16:40,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007510258] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:40,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883166204] [2023-08-03 19:16:40,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:40,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:40,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:40,829 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 19:16:40,852 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 19:16:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:40,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:16:40,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:40,980 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 19:16:40,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:16:41,006 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 19:16:41,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883166204] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:16:41,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:16:41,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:16:41,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457134383] [2023-08-03 19:16:41,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:16:41,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:16:41,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:41,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:16:41,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:16:41,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 237 [2023-08-03 19:16:41,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 310 flow. Second operand has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states 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 19:16:41,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:41,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 237 [2023-08-03 19:16:41,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:41,888 INFO L124 PetriNetUnfolderBase]: 5849/12383 cut-off events. [2023-08-03 19:16:41,889 INFO L125 PetriNetUnfolderBase]: For 9832/9832 co-relation queries the response was YES. [2023-08-03 19:16:41,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32266 conditions, 12383 events. 5849/12383 cut-off events. For 9832/9832 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 105449 event pairs, 1823 based on Foata normal form. 513/12882 useless extension candidates. Maximal degree in co-relation 29086. Up to 4196 conditions per place. [2023-08-03 19:16:41,933 INFO L140 encePairwiseOnDemand]: 233/237 looper letters, 115 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2023-08-03 19:16:41,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 135 transitions, 767 flow [2023-08-03 19:16:41,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:16:41,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:16:41,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 605 transitions. [2023-08-03 19:16:41,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6381856540084389 [2023-08-03 19:16:41,936 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 605 transitions. [2023-08-03 19:16:41,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 605 transitions. [2023-08-03 19:16:41,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:41,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 605 transitions. [2023-08-03 19:16:41,938 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 19:16:41,939 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 19:16:41,939 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 19:16:41,939 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 310 flow. Second operand 4 states and 605 transitions. [2023-08-03 19:16:41,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 135 transitions, 767 flow [2023-08-03 19:16:41,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 135 transitions, 767 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:16:41,984 INFO L231 Difference]: Finished difference. Result has 84 places, 76 transitions, 330 flow [2023-08-03 19:16:41,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=84, PETRI_TRANSITIONS=76} [2023-08-03 19:16:41,985 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 24 predicate places. [2023-08-03 19:16:41,985 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 76 transitions, 330 flow [2023-08-03 19:16:41,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states 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 19:16:41,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:41,985 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 19:16:41,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-03 19:16:42,185 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,SelfDestructingSolverStorable13 [2023-08-03 19:16:42,186 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 19:16:42,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:42,186 INFO L85 PathProgramCache]: Analyzing trace with hash 2103175554, now seen corresponding path program 1 times [2023-08-03 19:16:42,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:42,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343488456] [2023-08-03 19:16:42,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:42,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:42,272 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 19:16:42,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:42,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343488456] [2023-08-03 19:16:42,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343488456] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:42,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500819653] [2023-08-03 19:16:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:42,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:42,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:42,274 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 19:16:42,291 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 19:16:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:42,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 19:16:42,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 19:16:42,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:16:42,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500819653] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:42,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:16:42,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 8 [2023-08-03 19:16:42,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047653919] [2023-08-03 19:16:42,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:42,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 19:16:42,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:42,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 19:16:42,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-03 19:16:42,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 237 [2023-08-03 19:16:42,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 330 flow. Second operand has 7 states, 7 states have (on average 129.14285714285714) internal successors, (904), 7 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 19:16:42,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:42,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 237 [2023-08-03 19:16:42,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:43,889 INFO L124 PetriNetUnfolderBase]: 7624/16129 cut-off events. [2023-08-03 19:16:43,890 INFO L125 PetriNetUnfolderBase]: For 20812/20812 co-relation queries the response was YES. [2023-08-03 19:16:43,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46665 conditions, 16129 events. 7624/16129 cut-off events. For 20812/20812 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 143068 event pairs, 2844 based on Foata normal form. 3/16094 useless extension candidates. Maximal degree in co-relation 42117. Up to 8259 conditions per place. [2023-08-03 19:16:43,976 INFO L140 encePairwiseOnDemand]: 229/237 looper letters, 206 selfloop transitions, 28 changer transitions 0/246 dead transitions. [2023-08-03 19:16:43,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 246 transitions, 1630 flow [2023-08-03 19:16:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 19:16:43,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 19:16:43,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1311 transitions. [2023-08-03 19:16:43,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6146272855133614 [2023-08-03 19:16:43,980 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1311 transitions. [2023-08-03 19:16:43,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1311 transitions. [2023-08-03 19:16:43,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:43,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1311 transitions. [2023-08-03 19:16:43,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.66666666666666) internal successors, (1311), 9 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states 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 19:16:43,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 237.0) internal successors, (2370), 10 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states 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 19:16:43,987 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 237.0) internal successors, (2370), 10 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states 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 19:16:43,987 INFO L175 Difference]: Start difference. First operand has 84 places, 76 transitions, 330 flow. Second operand 9 states and 1311 transitions. [2023-08-03 19:16:43,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 246 transitions, 1630 flow [2023-08-03 19:16:44,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 246 transitions, 1604 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-03 19:16:44,043 INFO L231 Difference]: Finished difference. Result has 92 places, 93 transitions, 483 flow [2023-08-03 19:16:44,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=483, PETRI_PLACES=92, PETRI_TRANSITIONS=93} [2023-08-03 19:16:44,044 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 32 predicate places. [2023-08-03 19:16:44,044 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 93 transitions, 483 flow [2023-08-03 19:16:44,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.14285714285714) internal successors, (904), 7 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 19:16:44,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:44,045 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 19:16:44,052 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 19:16:44,249 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,SelfDestructingSolverStorable14 [2023-08-03 19:16:44,250 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 19:16:44,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:44,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1609046310, now seen corresponding path program 2 times [2023-08-03 19:16:44,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:44,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596434098] [2023-08-03 19:16:44,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:44,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:44,367 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 19:16:44,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:44,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596434098] [2023-08-03 19:16:44,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596434098] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:44,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808363772] [2023-08-03 19:16:44,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:16:44,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:44,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:44,370 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 19:16:44,390 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 19:16:44,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:16:44,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:16:44,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 19:16:44,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:44,585 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 19:16:44,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:16:44,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808363772] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:44,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:16:44,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 8 [2023-08-03 19:16:44,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819168276] [2023-08-03 19:16:44,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:44,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 19:16:44,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:44,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 19:16:44,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-03 19:16:44,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 237 [2023-08-03 19:16:44,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 483 flow. Second operand has 7 states, 7 states have (on average 129.14285714285714) internal successors, (904), 7 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 19:16:44,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:44,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 237 [2023-08-03 19:16:44,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:45,979 INFO L124 PetriNetUnfolderBase]: 7611/16151 cut-off events. [2023-08-03 19:16:45,979 INFO L125 PetriNetUnfolderBase]: For 21015/21015 co-relation queries the response was YES. [2023-08-03 19:16:46,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47695 conditions, 16151 events. 7611/16151 cut-off events. For 21015/21015 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 143815 event pairs, 3562 based on Foata normal form. 3/16103 useless extension candidates. Maximal degree in co-relation 42953. Up to 12163 conditions per place. [2023-08-03 19:16:46,058 INFO L140 encePairwiseOnDemand]: 229/237 looper letters, 169 selfloop transitions, 21 changer transitions 0/202 dead transitions. [2023-08-03 19:16:46,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 202 transitions, 1360 flow [2023-08-03 19:16:46,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:16:46,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:16:46,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1146 transitions. [2023-08-03 19:16:46,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6044303797468354 [2023-08-03 19:16:46,061 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1146 transitions. [2023-08-03 19:16:46,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1146 transitions. [2023-08-03 19:16:46,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:46,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1146 transitions. [2023-08-03 19:16:46,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 143.25) internal successors, (1146), 8 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states 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 19:16:46,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 237.0) internal successors, (2133), 9 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states 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 19:16:46,066 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 237.0) internal successors, (2133), 9 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states 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 19:16:46,066 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 483 flow. Second operand 8 states and 1146 transitions. [2023-08-03 19:16:46,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 202 transitions, 1360 flow [2023-08-03 19:16:46,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 202 transitions, 1334 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-03 19:16:46,153 INFO L231 Difference]: Finished difference. Result has 100 places, 95 transitions, 520 flow [2023-08-03 19:16:46,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=520, PETRI_PLACES=100, PETRI_TRANSITIONS=95} [2023-08-03 19:16:46,154 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 40 predicate places. [2023-08-03 19:16:46,154 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 95 transitions, 520 flow [2023-08-03 19:16:46,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.14285714285714) internal successors, (904), 7 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 19:16:46,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:46,154 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 19:16:46,158 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 19:16:46,355 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,SelfDestructingSolverStorable15 [2023-08-03 19:16:46,355 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 19:16:46,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:46,355 INFO L85 PathProgramCache]: Analyzing trace with hash -414253634, now seen corresponding path program 1 times [2023-08-03 19:16:46,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:46,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704587373] [2023-08-03 19:16:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:46,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:46,432 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 19:16:46,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:46,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704587373] [2023-08-03 19:16:46,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704587373] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:46,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901070499] [2023-08-03 19:16:46,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:46,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:46,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:46,434 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 19:16:46,437 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 19:16:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:46,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 19:16:46,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 19:16:46,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:16:46,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901070499] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:46,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:16:46,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 8 [2023-08-03 19:16:46,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526094170] [2023-08-03 19:16:46,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:46,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 19:16:46,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:46,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 19:16:46,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-03 19:16:46,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 237 [2023-08-03 19:16:46,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 520 flow. Second operand has 7 states, 7 states have (on average 129.14285714285714) internal successors, (904), 7 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 19:16:46,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:46,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 237 [2023-08-03 19:16:46,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:48,060 INFO L124 PetriNetUnfolderBase]: 7602/16120 cut-off events. [2023-08-03 19:16:48,061 INFO L125 PetriNetUnfolderBase]: For 19990/19990 co-relation queries the response was YES. [2023-08-03 19:16:48,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47406 conditions, 16120 events. 7602/16120 cut-off events. For 19990/19990 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 143090 event pairs, 3471 based on Foata normal form. 3/16074 useless extension candidates. Maximal degree in co-relation 42711. Up to 10349 conditions per place. [2023-08-03 19:16:48,155 INFO L140 encePairwiseOnDemand]: 229/237 looper letters, 181 selfloop transitions, 24 changer transitions 0/217 dead transitions. [2023-08-03 19:16:48,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 217 transitions, 1485 flow [2023-08-03 19:16:48,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:16:48,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:16:48,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1160 transitions. [2023-08-03 19:16:48,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6118143459915611 [2023-08-03 19:16:48,157 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1160 transitions. [2023-08-03 19:16:48,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1160 transitions. [2023-08-03 19:16:48,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:48,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1160 transitions. [2023-08-03 19:16:48,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 145.0) internal successors, (1160), 8 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 19:16:48,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 237.0) internal successors, (2133), 9 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states 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 19:16:48,163 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 237.0) internal successors, (2133), 9 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states 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 19:16:48,163 INFO L175 Difference]: Start difference. First operand has 100 places, 95 transitions, 520 flow. Second operand 8 states and 1160 transitions. [2023-08-03 19:16:48,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 217 transitions, 1485 flow [2023-08-03 19:16:48,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 217 transitions, 1451 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-03 19:16:48,254 INFO L231 Difference]: Finished difference. Result has 106 places, 98 transitions, 581 flow [2023-08-03 19:16:48,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=581, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2023-08-03 19:16:48,255 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 46 predicate places. [2023-08-03 19:16:48,255 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 581 flow [2023-08-03 19:16:48,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.14285714285714) internal successors, (904), 7 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 19:16:48,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:48,255 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 19:16:48,260 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 19:16:48,456 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,SelfDestructingSolverStorable16 [2023-08-03 19:16:48,456 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 19:16:48,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:48,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1179048039, now seen corresponding path program 1 times [2023-08-03 19:16:48,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:48,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880463537] [2023-08-03 19:16:48,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:48,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:48,533 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 19:16:48,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:48,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880463537] [2023-08-03 19:16:48,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880463537] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:48,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377995807] [2023-08-03 19:16:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:48,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:48,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:48,536 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 19:16:48,539 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 19:16:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:48,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 19:16:48,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:16:48,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:16:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:16:48,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377995807] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:16:48,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:16:48,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 13 [2023-08-03 19:16:48,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525501409] [2023-08-03 19:16:48,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:16:48,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-03 19:16:48,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:48,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-03 19:16:48,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-03 19:16:48,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 237 [2023-08-03 19:16:48,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 581 flow. Second operand has 14 states, 14 states have (on average 126.42857142857143) internal successors, (1770), 14 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states 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 19:16:48,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:48,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 237 [2023-08-03 19:16:48,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:50,823 INFO L124 PetriNetUnfolderBase]: 9124/19243 cut-off events. [2023-08-03 19:16:50,823 INFO L125 PetriNetUnfolderBase]: For 25567/25567 co-relation queries the response was YES. [2023-08-03 19:16:50,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57078 conditions, 19243 events. 9124/19243 cut-off events. For 25567/25567 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 176140 event pairs, 3090 based on Foata normal form. 32/19230 useless extension candidates. Maximal degree in co-relation 52221. Up to 10017 conditions per place. [2023-08-03 19:16:50,962 INFO L140 encePairwiseOnDemand]: 227/237 looper letters, 318 selfloop transitions, 46 changer transitions 2/378 dead transitions. [2023-08-03 19:16:50,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 378 transitions, 2518 flow [2023-08-03 19:16:50,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-03 19:16:50,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-03 19:16:50,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2813 transitions. [2023-08-03 19:16:50,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5651999196302994 [2023-08-03 19:16:50,966 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2813 transitions. [2023-08-03 19:16:50,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2813 transitions. [2023-08-03 19:16:50,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:50,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2813 transitions. [2023-08-03 19:16:50,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 133.95238095238096) internal successors, (2813), 21 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states 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 19:16:50,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 237.0) internal successors, (5214), 22 states have internal predecessors, (5214), 0 states have call successors, (0), 0 states 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 19:16:50,978 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 237.0) internal successors, (5214), 22 states have internal predecessors, (5214), 0 states have call successors, (0), 0 states 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 19:16:50,978 INFO L175 Difference]: Start difference. First operand has 106 places, 98 transitions, 581 flow. Second operand 21 states and 2813 transitions. [2023-08-03 19:16:50,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 378 transitions, 2518 flow [2023-08-03 19:16:51,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 378 transitions, 2463 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-03 19:16:51,121 INFO L231 Difference]: Finished difference. Result has 122 places, 129 transitions, 774 flow [2023-08-03 19:16:51,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=774, PETRI_PLACES=122, PETRI_TRANSITIONS=129} [2023-08-03 19:16:51,122 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 62 predicate places. [2023-08-03 19:16:51,122 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 129 transitions, 774 flow [2023-08-03 19:16:51,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 126.42857142857143) internal successors, (1770), 14 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states 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 19:16:51,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:51,123 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 19:16:51,129 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 19:16:51,328 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,SelfDestructingSolverStorable17 [2023-08-03 19:16:51,329 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:16:51,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:51,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1703841362, now seen corresponding path program 1 times [2023-08-03 19:16:51,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:51,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279481182] [2023-08-03 19:16:51,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:51,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:16:51,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:51,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279481182] [2023-08-03 19:16:51,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279481182] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:16:51,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868608838] [2023-08-03 19:16:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:51,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:51,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:16:51,489 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:16:51,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-03 19:16:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:51,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:16:51,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:16:51,689 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:16:51,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:16:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:16:51,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868608838] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:16:51,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:16:51,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-03 19:16:51,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438158024] [2023-08-03 19:16:51,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:16:51,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-03 19:16:51,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:51,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-03 19:16:51,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-03 19:16:51,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 237 [2023-08-03 19:16:51,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 129 transitions, 774 flow. Second operand has 14 states, 14 states have (on average 128.28571428571428) internal successors, (1796), 14 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states 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 19:16:51,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:51,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 237 [2023-08-03 19:16:51,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:54,655 INFO L124 PetriNetUnfolderBase]: 14869/31697 cut-off events. [2023-08-03 19:16:54,655 INFO L125 PetriNetUnfolderBase]: For 41892/41892 co-relation queries the response was YES. [2023-08-03 19:16:54,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95797 conditions, 31697 events. 14869/31697 cut-off events. For 41892/41892 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 317871 event pairs, 4147 based on Foata normal form. 2/31675 useless extension candidates. Maximal degree in co-relation 91534. Up to 8786 conditions per place. [2023-08-03 19:16:54,919 INFO L140 encePairwiseOnDemand]: 228/237 looper letters, 335 selfloop transitions, 79 changer transitions 61/487 dead transitions. [2023-08-03 19:16:54,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 487 transitions, 3590 flow [2023-08-03 19:16:54,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-03 19:16:54,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-03 19:16:54,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2662 transitions. [2023-08-03 19:16:54,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911614479236065 [2023-08-03 19:16:54,923 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2662 transitions. [2023-08-03 19:16:54,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2662 transitions. [2023-08-03 19:16:54,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:54,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2662 transitions. [2023-08-03 19:16:54,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 140.10526315789474) internal successors, (2662), 19 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states 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 19:16:54,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 237.0) internal successors, (4740), 20 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states 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 19:16:54,933 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 237.0) internal successors, (4740), 20 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states 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 19:16:54,933 INFO L175 Difference]: Start difference. First operand has 122 places, 129 transitions, 774 flow. Second operand 19 states and 2662 transitions. [2023-08-03 19:16:54,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 487 transitions, 3590 flow [2023-08-03 19:16:55,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 487 transitions, 3490 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-08-03 19:16:55,408 INFO L231 Difference]: Finished difference. Result has 141 places, 145 transitions, 1015 flow [2023-08-03 19:16:55,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1015, PETRI_PLACES=141, PETRI_TRANSITIONS=145} [2023-08-03 19:16:55,409 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 81 predicate places. [2023-08-03 19:16:55,409 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 145 transitions, 1015 flow [2023-08-03 19:16:55,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 128.28571428571428) internal successors, (1796), 14 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states 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 19:16:55,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:55,410 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 19:16:55,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-03 19:16:55,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:16:55,611 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:16:55,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:55,612 INFO L85 PathProgramCache]: Analyzing trace with hash 459542126, now seen corresponding path program 2 times [2023-08-03 19:16:55,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:55,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355216853] [2023-08-03 19:16:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:55,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:16:55,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:55,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355216853] [2023-08-03 19:16:55,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355216853] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:55,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:16:55,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-03 19:16:55,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546063518] [2023-08-03 19:16:55,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:55,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-03 19:16:55,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:55,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-03 19:16:55,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-03 19:16:55,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 237 [2023-08-03 19:16:55,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 145 transitions, 1015 flow. Second operand has 9 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states 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 19:16:55,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:55,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 237 [2023-08-03 19:16:55,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:16:58,362 INFO L124 PetriNetUnfolderBase]: 11187/23946 cut-off events. [2023-08-03 19:16:58,362 INFO L125 PetriNetUnfolderBase]: For 37115/37115 co-relation queries the response was YES. [2023-08-03 19:16:58,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75637 conditions, 23946 events. 11187/23946 cut-off events. For 37115/37115 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 229007 event pairs, 4159 based on Foata normal form. 1/23925 useless extension candidates. Maximal degree in co-relation 75598. Up to 12946 conditions per place. [2023-08-03 19:16:58,578 INFO L140 encePairwiseOnDemand]: 228/237 looper letters, 192 selfloop transitions, 34 changer transitions 97/335 dead transitions. [2023-08-03 19:16:58,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 335 transitions, 2559 flow [2023-08-03 19:16:58,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-03 19:16:58,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-03 19:16:58,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1694 transitions. [2023-08-03 19:16:58,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5956399437412095 [2023-08-03 19:16:58,581 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1694 transitions. [2023-08-03 19:16:58,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1694 transitions. [2023-08-03 19:16:58,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:16:58,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1694 transitions. [2023-08-03 19:16:58,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.16666666666666) internal successors, (1694), 12 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:16:58,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 237.0) internal successors, (3081), 13 states have internal predecessors, (3081), 0 states have call successors, (0), 0 states 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 19:16:58,586 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 237.0) internal successors, (3081), 13 states have internal predecessors, (3081), 0 states have call successors, (0), 0 states 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 19:16:58,586 INFO L175 Difference]: Start difference. First operand has 141 places, 145 transitions, 1015 flow. Second operand 12 states and 1694 transitions. [2023-08-03 19:16:58,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 335 transitions, 2559 flow [2023-08-03 19:16:58,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 335 transitions, 2447 flow, removed 13 selfloop flow, removed 11 redundant places. [2023-08-03 19:16:58,793 INFO L231 Difference]: Finished difference. Result has 142 places, 136 transitions, 917 flow [2023-08-03 19:16:58,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=917, PETRI_PLACES=142, PETRI_TRANSITIONS=136} [2023-08-03 19:16:58,794 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 82 predicate places. [2023-08-03 19:16:58,794 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 136 transitions, 917 flow [2023-08-03 19:16:58,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states 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 19:16:58,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:16:58,795 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 19:16:58,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-03 19:16:58,795 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:16:58,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:16:58,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1635996384, now seen corresponding path program 3 times [2023-08-03 19:16:58,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:16:58,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311862942] [2023-08-03 19:16:58,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:16:58,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:16:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:16:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:16:58,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:16:58,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311862942] [2023-08-03 19:16:58,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311862942] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:16:58,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:16:58,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-03 19:16:58,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429320574] [2023-08-03 19:16:58,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:16:58,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-03 19:16:58,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:16:58,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-03 19:16:58,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-03 19:16:58,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 237 [2023-08-03 19:16:58,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 136 transitions, 917 flow. Second operand has 9 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states 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 19:16:58,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:16:58,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 237 [2023-08-03 19:16:58,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:01,254 INFO L124 PetriNetUnfolderBase]: 10581/22746 cut-off events. [2023-08-03 19:17:01,254 INFO L125 PetriNetUnfolderBase]: For 35484/35484 co-relation queries the response was YES. [2023-08-03 19:17:01,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70751 conditions, 22746 events. 10581/22746 cut-off events. For 35484/35484 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 215843 event pairs, 4504 based on Foata normal form. 1/22717 useless extension candidates. Maximal degree in co-relation 61277. Up to 15588 conditions per place. [2023-08-03 19:17:01,449 INFO L140 encePairwiseOnDemand]: 228/237 looper letters, 152 selfloop transitions, 13 changer transitions 106/283 dead transitions. [2023-08-03 19:17:01,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 283 transitions, 2157 flow [2023-08-03 19:17:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-03 19:17:01,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-03 19:17:01,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1410 transitions. [2023-08-03 19:17:01,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5949367088607594 [2023-08-03 19:17:01,451 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1410 transitions. [2023-08-03 19:17:01,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1410 transitions. [2023-08-03 19:17:01,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:01,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1410 transitions. [2023-08-03 19:17:01,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states 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 19:17:01,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 237.0) internal successors, (2607), 11 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states 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 19:17:01,455 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 237.0) internal successors, (2607), 11 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states 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 19:17:01,455 INFO L175 Difference]: Start difference. First operand has 142 places, 136 transitions, 917 flow. Second operand 10 states and 1410 transitions. [2023-08-03 19:17:01,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 283 transitions, 2157 flow [2023-08-03 19:17:01,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 283 transitions, 2079 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-08-03 19:17:01,605 INFO L231 Difference]: Finished difference. Result has 138 places, 129 transitions, 829 flow [2023-08-03 19:17:01,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=829, PETRI_PLACES=138, PETRI_TRANSITIONS=129} [2023-08-03 19:17:01,606 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 78 predicate places. [2023-08-03 19:17:01,606 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 129 transitions, 829 flow [2023-08-03 19:17:01,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states 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 19:17:01,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:01,607 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 19:17:01,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-03 19:17:01,607 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:17:01,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:01,607 INFO L85 PathProgramCache]: Analyzing trace with hash -857785570, now seen corresponding path program 1 times [2023-08-03 19:17:01,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:01,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673248664] [2023-08-03 19:17:01,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:01,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:17:01,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:01,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673248664] [2023-08-03 19:17:01,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673248664] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:17:01,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:17:01,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-03 19:17:01,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716154133] [2023-08-03 19:17:01,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:17:01,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-03 19:17:01,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:01,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-03 19:17:01,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-03 19:17:01,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 237 [2023-08-03 19:17:01,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 129 transitions, 829 flow. Second operand has 9 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states 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 19:17:01,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:01,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 237 [2023-08-03 19:17:01,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:03,766 INFO L124 PetriNetUnfolderBase]: 8736/18806 cut-off events. [2023-08-03 19:17:03,766 INFO L125 PetriNetUnfolderBase]: For 29398/29398 co-relation queries the response was YES. [2023-08-03 19:17:03,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58521 conditions, 18806 events. 8736/18806 cut-off events. For 29398/29398 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 172954 event pairs, 3312 based on Foata normal form. 1/18780 useless extension candidates. Maximal degree in co-relation 58180. Up to 11404 conditions per place. [2023-08-03 19:17:03,888 INFO L140 encePairwiseOnDemand]: 228/237 looper letters, 158 selfloop transitions, 15 changer transitions 98/283 dead transitions. [2023-08-03 19:17:03,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 283 transitions, 2076 flow [2023-08-03 19:17:03,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-03 19:17:03,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-03 19:17:03,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1418 transitions. [2023-08-03 19:17:03,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5983122362869199 [2023-08-03 19:17:03,890 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1418 transitions. [2023-08-03 19:17:03,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1418 transitions. [2023-08-03 19:17:03,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:03,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1418 transitions. [2023-08-03 19:17:03,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 141.8) internal successors, (1418), 10 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states 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 19:17:03,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 237.0) internal successors, (2607), 11 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states 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 19:17:03,893 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 237.0) internal successors, (2607), 11 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states 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 19:17:03,893 INFO L175 Difference]: Start difference. First operand has 138 places, 129 transitions, 829 flow. Second operand 10 states and 1418 transitions. [2023-08-03 19:17:03,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 283 transitions, 2076 flow [2023-08-03 19:17:04,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 283 transitions, 2037 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-08-03 19:17:04,014 INFO L231 Difference]: Finished difference. Result has 132 places, 119 transitions, 747 flow [2023-08-03 19:17:04,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=747, PETRI_PLACES=132, PETRI_TRANSITIONS=119} [2023-08-03 19:17:04,015 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 72 predicate places. [2023-08-03 19:17:04,015 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 119 transitions, 747 flow [2023-08-03 19:17:04,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states 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 19:17:04,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:04,015 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 19:17:04,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-03 19:17:04,016 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:17:04,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:04,016 INFO L85 PathProgramCache]: Analyzing trace with hash 240026028, now seen corresponding path program 2 times [2023-08-03 19:17:04,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:04,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422882576] [2023-08-03 19:17:04,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:04,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:04,173 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:17:04,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:04,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422882576] [2023-08-03 19:17:04,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422882576] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:17:04,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:17:04,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-03 19:17:04,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100693224] [2023-08-03 19:17:04,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:17:04,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-03 19:17:04,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:04,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-03 19:17:04,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-03 19:17:04,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 237 [2023-08-03 19:17:04,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 119 transitions, 747 flow. Second operand has 9 states, 9 states have (on average 126.88888888888889) internal successors, (1142), 9 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states 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 19:17:04,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:04,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 237 [2023-08-03 19:17:04,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:06,680 INFO L124 PetriNetUnfolderBase]: 11013/23244 cut-off events. [2023-08-03 19:17:06,680 INFO L125 PetriNetUnfolderBase]: For 36385/36418 co-relation queries the response was YES. [2023-08-03 19:17:06,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73289 conditions, 23244 events. 11013/23244 cut-off events. For 36385/36418 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 215341 event pairs, 3685 based on Foata normal form. 34/23252 useless extension candidates. Maximal degree in co-relation 72596. Up to 4980 conditions per place. [2023-08-03 19:17:06,866 INFO L140 encePairwiseOnDemand]: 229/237 looper letters, 381 selfloop transitions, 26 changer transitions 6/432 dead transitions. [2023-08-03 19:17:06,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 432 transitions, 3383 flow [2023-08-03 19:17:06,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-03 19:17:06,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-03 19:17:06,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1858 transitions. [2023-08-03 19:17:06,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6030509574813372 [2023-08-03 19:17:06,868 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1858 transitions. [2023-08-03 19:17:06,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1858 transitions. [2023-08-03 19:17:06,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:06,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1858 transitions. [2023-08-03 19:17:06,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 142.92307692307693) internal successors, (1858), 13 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states 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 19:17:06,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 237.0) internal successors, (3318), 14 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states 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 19:17:06,873 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 237.0) internal successors, (3318), 14 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states 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 19:17:06,873 INFO L175 Difference]: Start difference. First operand has 132 places, 119 transitions, 747 flow. Second operand 13 states and 1858 transitions. [2023-08-03 19:17:06,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 432 transitions, 3383 flow [2023-08-03 19:17:07,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 432 transitions, 3309 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-08-03 19:17:07,003 INFO L231 Difference]: Finished difference. Result has 134 places, 139 transitions, 897 flow [2023-08-03 19:17:07,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=897, PETRI_PLACES=134, PETRI_TRANSITIONS=139} [2023-08-03 19:17:07,004 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 74 predicate places. [2023-08-03 19:17:07,004 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 139 transitions, 897 flow [2023-08-03 19:17:07,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 126.88888888888889) internal successors, (1142), 9 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states 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 19:17:07,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:07,004 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 19:17:07,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-03 19:17:07,004 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:17:07,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:07,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1685906042, now seen corresponding path program 4 times [2023-08-03 19:17:07,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:07,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176160189] [2023-08-03 19:17:07,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:07,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:17:07,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:07,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176160189] [2023-08-03 19:17:07,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176160189] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:17:07,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:17:07,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-03 19:17:07,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813227171] [2023-08-03 19:17:07,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:17:07,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-03 19:17:07,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:07,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-03 19:17:07,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-03 19:17:07,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 237 [2023-08-03 19:17:07,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 139 transitions, 897 flow. Second operand has 9 states, 9 states have (on average 126.88888888888889) internal successors, (1142), 9 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states 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 19:17:07,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:07,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 237 [2023-08-03 19:17:07,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:09,811 INFO L124 PetriNetUnfolderBase]: 12967/28509 cut-off events. [2023-08-03 19:17:09,811 INFO L125 PetriNetUnfolderBase]: For 46364/46364 co-relation queries the response was YES. [2023-08-03 19:17:09,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91455 conditions, 28509 events. 12967/28509 cut-off events. For 46364/46364 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 284737 event pairs, 5536 based on Foata normal form. 4/28452 useless extension candidates. Maximal degree in co-relation 72665. Up to 12008 conditions per place. [2023-08-03 19:17:09,979 INFO L140 encePairwiseOnDemand]: 228/237 looper letters, 191 selfloop transitions, 21 changer transitions 130/357 dead transitions. [2023-08-03 19:17:09,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 357 transitions, 2726 flow [2023-08-03 19:17:09,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 19:17:09,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 19:17:09,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1568 transitions. [2023-08-03 19:17:09,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.601457614115842 [2023-08-03 19:17:09,981 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1568 transitions. [2023-08-03 19:17:09,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1568 transitions. [2023-08-03 19:17:09,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:09,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1568 transitions. [2023-08-03 19:17:09,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 142.54545454545453) internal successors, (1568), 11 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states 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 19:17:09,985 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 19:17:09,985 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 19:17:09,985 INFO L175 Difference]: Start difference. First operand has 134 places, 139 transitions, 897 flow. Second operand 11 states and 1568 transitions. [2023-08-03 19:17:09,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 357 transitions, 2726 flow [2023-08-03 19:17:10,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 357 transitions, 2614 flow, removed 42 selfloop flow, removed 2 redundant places. [2023-08-03 19:17:10,200 INFO L231 Difference]: Finished difference. Result has 142 places, 128 transitions, 820 flow [2023-08-03 19:17:10,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=820, PETRI_PLACES=142, PETRI_TRANSITIONS=128} [2023-08-03 19:17:10,201 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 82 predicate places. [2023-08-03 19:17:10,201 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 128 transitions, 820 flow [2023-08-03 19:17:10,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 126.88888888888889) internal successors, (1142), 9 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states 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 19:17:10,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:10,202 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 19:17:10,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-03 19:17:10,202 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:17:10,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:10,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1164481902, now seen corresponding path program 1 times [2023-08-03 19:17:10,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:10,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638596681] [2023-08-03 19:17:10,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:10,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:17:10,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:10,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638596681] [2023-08-03 19:17:10,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638596681] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:17:10,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781401330] [2023-08-03 19:17:10,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:10,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:17:10,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:17:10,356 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:17:10,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-03 19:17:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:10,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:17:10,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:17:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:17:10,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:17:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:17:10,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781401330] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:17:10,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:17:10,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-03 19:17:10,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662808818] [2023-08-03 19:17:10,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:17:10,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-03 19:17:10,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:10,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-03 19:17:10,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-03 19:17:10,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 237 [2023-08-03 19:17:10,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 128 transitions, 820 flow. Second operand has 14 states, 14 states have (on average 128.14285714285714) internal successors, (1794), 14 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states 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 19:17:10,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:10,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 237 [2023-08-03 19:17:10,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:13,517 INFO L124 PetriNetUnfolderBase]: 15211/33458 cut-off events. [2023-08-03 19:17:13,517 INFO L125 PetriNetUnfolderBase]: For 50575/50575 co-relation queries the response was YES. [2023-08-03 19:17:13,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105584 conditions, 33458 events. 15211/33458 cut-off events. For 50575/50575 co-relation queries the response was YES. Maximal size of possible extension queue 945. Compared 346038 event pairs, 4947 based on Foata normal form. 8/33407 useless extension candidates. Maximal degree in co-relation 105280. Up to 9440 conditions per place. [2023-08-03 19:17:13,722 INFO L140 encePairwiseOnDemand]: 228/237 looper letters, 175 selfloop transitions, 25 changer transitions 167/382 dead transitions. [2023-08-03 19:17:13,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 382 transitions, 2836 flow [2023-08-03 19:17:13,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-03 19:17:13,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-03 19:17:13,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1821 transitions. [2023-08-03 19:17:13,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5910418695228822 [2023-08-03 19:17:13,724 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1821 transitions. [2023-08-03 19:17:13,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1821 transitions. [2023-08-03 19:17:13,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:13,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1821 transitions. [2023-08-03 19:17:13,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 140.07692307692307) internal successors, (1821), 13 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states 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 19:17:13,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 237.0) internal successors, (3318), 14 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states 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 19:17:13,728 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 237.0) internal successors, (3318), 14 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states 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 19:17:13,728 INFO L175 Difference]: Start difference. First operand has 142 places, 128 transitions, 820 flow. Second operand 13 states and 1821 transitions. [2023-08-03 19:17:13,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 382 transitions, 2836 flow [2023-08-03 19:17:14,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 382 transitions, 2755 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-08-03 19:17:14,102 INFO L231 Difference]: Finished difference. Result has 137 places, 101 transitions, 609 flow [2023-08-03 19:17:14,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=609, PETRI_PLACES=137, PETRI_TRANSITIONS=101} [2023-08-03 19:17:14,103 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 77 predicate places. [2023-08-03 19:17:14,103 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 101 transitions, 609 flow [2023-08-03 19:17:14,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 128.14285714285714) internal successors, (1794), 14 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states 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 19:17:14,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:14,104 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 19:17:14,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-03 19:17:14,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:17:14,304 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:17:14,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:14,304 INFO L85 PathProgramCache]: Analyzing trace with hash 710453774, now seen corresponding path program 1 times [2023-08-03 19:17:14,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:14,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268397530] [2023-08-03 19:17:14,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:14,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-08-03 19:17:14,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:14,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268397530] [2023-08-03 19:17:14,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268397530] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:17:14,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23418574] [2023-08-03 19:17:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:14,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:17:14,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:17:14,430 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:17:14,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-03 19:17:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:14,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:17:14,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:17:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-08-03 19:17:14,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:17:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-08-03 19:17:14,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23418574] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:17:14,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:17:14,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-03 19:17:14,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577506180] [2023-08-03 19:17:14,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:17:14,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-03 19:17:14,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:14,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-03 19:17:14,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-03 19:17:14,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 237 [2023-08-03 19:17:14,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 101 transitions, 609 flow. Second operand has 14 states, 14 states have (on average 128.14285714285714) internal successors, (1794), 14 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states 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 19:17:14,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:14,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 237 [2023-08-03 19:17:14,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:16,017 INFO L124 PetriNetUnfolderBase]: 5172/11448 cut-off events. [2023-08-03 19:17:16,017 INFO L125 PetriNetUnfolderBase]: For 19135/19135 co-relation queries the response was YES. [2023-08-03 19:17:16,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36883 conditions, 11448 events. 5172/11448 cut-off events. For 19135/19135 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 98406 event pairs, 1184 based on Foata normal form. 4/11446 useless extension candidates. Maximal degree in co-relation 36760. Up to 4943 conditions per place. [2023-08-03 19:17:16,056 INFO L140 encePairwiseOnDemand]: 228/237 looper letters, 0 selfloop transitions, 0 changer transitions 258/258 dead transitions. [2023-08-03 19:17:16,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 258 transitions, 1859 flow [2023-08-03 19:17:16,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-03 19:17:16,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-03 19:17:16,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1893 transitions. [2023-08-03 19:17:16,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5705244122965641 [2023-08-03 19:17:16,058 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1893 transitions. [2023-08-03 19:17:16,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1893 transitions. [2023-08-03 19:17:16,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:16,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1893 transitions. [2023-08-03 19:17:16,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 135.21428571428572) internal successors, (1893), 14 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states 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 19:17:16,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 237.0) internal successors, (3555), 15 states have internal predecessors, (3555), 0 states have call successors, (0), 0 states 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 19:17:16,062 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 237.0) internal successors, (3555), 15 states have internal predecessors, (3555), 0 states have call successors, (0), 0 states 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 19:17:16,062 INFO L175 Difference]: Start difference. First operand has 137 places, 101 transitions, 609 flow. Second operand 14 states and 1893 transitions. [2023-08-03 19:17:16,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 258 transitions, 1859 flow [2023-08-03 19:17:16,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 258 transitions, 1761 flow, removed 0 selfloop flow, removed 19 redundant places. [2023-08-03 19:17:16,110 INFO L231 Difference]: Finished difference. Result has 117 places, 0 transitions, 0 flow [2023-08-03 19:17:16,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=117, PETRI_TRANSITIONS=0} [2023-08-03 19:17:16,110 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 57 predicate places. [2023-08-03 19:17:16,111 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 0 transitions, 0 flow [2023-08-03 19:17:16,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 128.14285714285714) internal successors, (1794), 14 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states 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 19:17:16,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 19:17:16,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 19:17:16,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:17:16,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-03 19:17:16,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-03 19:17:16,317 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:17:16,319 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:17:16,319 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:17:16,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:17:16 BasicIcfg [2023-08-03 19:17:16,322 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:17:16,322 INFO L158 Benchmark]: Toolchain (without parser) took 94274.76ms. Allocated memory was 654.3MB in the beginning and 15.4GB in the end (delta: 14.7GB). Free memory was 606.7MB in the beginning and 7.8GB in the end (delta: -7.2GB). Peak memory consumption was 7.5GB. Max. memory is 16.0GB. [2023-08-03 19:17:16,322 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 373.3MB. Free memory is still 326.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:17:16,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 386.35ms. Allocated memory is still 654.3MB. Free memory was 606.7MB in the beginning and 586.7MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 19:17:16,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.86ms. Allocated memory is still 654.3MB. Free memory was 586.7MB in the beginning and 584.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:17:16,323 INFO L158 Benchmark]: Boogie Preprocessor took 25.83ms. Allocated memory is still 654.3MB. Free memory was 584.7MB in the beginning and 582.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:17:16,324 INFO L158 Benchmark]: RCFGBuilder took 370.52ms. Allocated memory is still 654.3MB. Free memory was 582.9MB in the beginning and 567.2MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 19:17:16,324 INFO L158 Benchmark]: TraceAbstraction took 93442.04ms. Allocated memory was 654.3MB in the beginning and 15.4GB in the end (delta: 14.7GB). Free memory was 566.5MB in the beginning and 7.8GB in the end (delta: -7.3GB). Peak memory consumption was 7.5GB. Max. memory is 16.0GB. [2023-08-03 19:17:16,329 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 373.3MB. Free memory is still 326.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 386.35ms. Allocated memory is still 654.3MB. Free memory was 606.7MB in the beginning and 586.7MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.86ms. Allocated memory is still 654.3MB. Free memory was 586.7MB in the beginning and 584.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.83ms. Allocated memory is still 654.3MB. Free memory was 584.7MB in the beginning and 582.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 370.52ms. Allocated memory is still 654.3MB. Free memory was 582.9MB in the beginning and 567.2MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 93442.04ms. Allocated memory was 654.3MB in the beginning and 15.4GB in the end (delta: 14.7GB). Free memory was 566.5MB in the beginning and 7.8GB in the end (delta: -7.3GB). Peak memory consumption was 7.5GB. 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: 2.7s, 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: 2.6s, 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 - PositiveResult [Line: 727]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 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: 3.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.1s 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: 89.8s, OverallIterations: 24, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 77.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3042 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2835 mSDsluCounter, 356 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 293 mSDsCounter, 236 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10801 IncrementalHoareTripleChecker+Invalid, 11037 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 236 mSolverCounterUnsat, 63 mSDtfsCounter, 10801 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1137 GetRequests, 926 SyntacticMatches, 12 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1015occurred in iteration=17, InterpolantAutomatonStates: 193, 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: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1657 NumberOfCodeBlocks, 1657 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 1956 ConstructedInterpolants, 0 QuantifiedInterpolants, 4792 SizeOfPredicates, 16 NumberOfNonLiveVariables, 4152 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 47 InterpolantComputations, 17 PerfectInterpolantSequences, 611/685 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 19:17:16,343 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...