/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 INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread_sync01_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 01:43:35,319 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 01:43:35,376 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 01:43:35,379 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 01:43:35,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 01:43:35,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 01:43:35,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 01:43:35,391 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 01:43:35,392 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 01:43:35,392 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 01:43:35,392 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 01:43:35,393 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 01:43:35,393 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 01:43:35,393 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 01:43:35,394 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 01:43:35,394 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 01:43:35,394 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 01:43:35,394 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 01:43:35,394 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 01:43:35,395 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 01:43:35,395 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 01:43:35,396 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 01:43:35,396 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 01:43:35,396 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 01:43:35,396 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 01:43:35,397 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 01:43:35,397 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 01:43:35,397 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 01:43:35,397 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 01:43:35,397 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 01:43:35,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:43:35,398 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 01:43:35,398 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 01:43:35,398 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 01:43:35,398 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 01:43:35,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 01:43:35,398 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 01:43:35,399 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 01:43:35,399 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 01:43:35,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 01:43:35,399 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 01:43:35,401 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 01:43:35,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 01:43:35,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 01:43:35,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 01:43:35,600 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 01:43:35,600 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 01:43:35,601 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread_sync01_bound2.i [2023-08-04 01:43:36,526 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 01:43:36,757 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 01:43:36,757 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread_sync01_bound2.i [2023-08-04 01:43:36,779 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436f5b881/5ffa930227e041908285e4c012b4cd4b/FLAGba8eef050 [2023-08-04 01:43:37,106 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436f5b881/5ffa930227e041908285e4c012b4cd4b [2023-08-04 01:43:37,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 01:43:37,110 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 01:43:37,111 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 01:43:37,111 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 01:43:37,114 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 01:43:37,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:43:37" (1/1) ... [2023-08-04 01:43:37,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d28eff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:37, skipping insertion in model container [2023-08-04 01:43:37,115 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:43:37" (1/1) ... [2023-08-04 01:43:37,140 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 01:43:37,416 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_sync01_bound2.i[42166,42179] [2023-08-04 01:43:37,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:43:37,432 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 01:43:37,450 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [133] [2023-08-04 01:43:37,458 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [495] [2023-08-04 01:43:37,458 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [495] [2023-08-04 01:43:37,467 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_sync01_bound2.i[42166,42179] [2023-08-04 01:43:37,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:43:37,505 INFO L206 MainTranslator]: Completed translation [2023-08-04 01:43:37,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:37 WrapperNode [2023-08-04 01:43:37,505 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 01:43:37,506 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 01:43:37,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 01:43:37,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 01:43:37,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:37" (1/1) ... [2023-08-04 01:43:37,528 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:37" (1/1) ... [2023-08-04 01:43:37,551 INFO L138 Inliner]: procedures = 268, calls = 46, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 105 [2023-08-04 01:43:37,551 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 01:43:37,552 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 01:43:37,552 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 01:43:37,552 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 01:43:37,560 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:37" (1/1) ... [2023-08-04 01:43:37,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:37" (1/1) ... [2023-08-04 01:43:37,563 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:37" (1/1) ... [2023-08-04 01:43:37,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:37" (1/1) ... [2023-08-04 01:43:37,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:37" (1/1) ... [2023-08-04 01:43:37,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:37" (1/1) ... [2023-08-04 01:43:37,570 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:37" (1/1) ... [2023-08-04 01:43:37,570 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:37" (1/1) ... [2023-08-04 01:43:37,572 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 01:43:37,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 01:43:37,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 01:43:37,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 01:43:37,573 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:37" (1/1) ... [2023-08-04 01:43:37,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:43:37,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:43:37,594 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) [2023-08-04 01:43:37,606 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 [2023-08-04 01:43:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 01:43:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 01:43:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 01:43:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 01:43:37,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 01:43:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 01:43:37,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 01:43:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 01:43:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 01:43:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 01:43:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 01:43:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 01:43:37,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 01:43:37,629 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 01:43:37,749 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 01:43:37,751 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 01:43:37,925 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 01:43:37,930 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 01:43:37,930 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-04 01:43:37,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:43:37 BoogieIcfgContainer [2023-08-04 01:43:37,931 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 01:43:37,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 01:43:37,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 01:43:37,934 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 01:43:37,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 01:43:37" (1/3) ... [2023-08-04 01:43:37,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a90b2a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:43:37, skipping insertion in model container [2023-08-04 01:43:37,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:37" (2/3) ... [2023-08-04 01:43:37,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a90b2a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:43:37, skipping insertion in model container [2023-08-04 01:43:37,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:43:37" (3/3) ... [2023-08-04 01:43:37,936 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread_sync01_bound2.i [2023-08-04 01:43:37,941 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 01:43:37,947 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 01:43:37,947 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 01:43:37,947 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 01:43:38,005 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-04 01:43:38,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 133 transitions, 288 flow [2023-08-04 01:43:38,095 INFO L124 PetriNetUnfolderBase]: 32/266 cut-off events. [2023-08-04 01:43:38,095 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 01:43:38,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 266 events. 32/266 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 909 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 142. Up to 8 conditions per place. [2023-08-04 01:43:38,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 133 transitions, 288 flow [2023-08-04 01:43:38,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 133 transitions, 288 flow [2023-08-04 01:43:38,113 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:43:38,131 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 133 transitions, 288 flow [2023-08-04 01:43:38,136 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 133 transitions, 288 flow [2023-08-04 01:43:38,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 133 transitions, 288 flow [2023-08-04 01:43:38,178 INFO L124 PetriNetUnfolderBase]: 32/266 cut-off events. [2023-08-04 01:43:38,179 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 01:43:38,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 266 events. 32/266 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 909 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 142. Up to 8 conditions per place. [2023-08-04 01:43:38,182 INFO L119 LiptonReduction]: Number of co-enabled transitions 3510 [2023-08-04 01:43:41,654 INFO L134 LiptonReduction]: Checked pairs total: 9588 [2023-08-04 01:43:41,654 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-08-04 01:43:41,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:43:41,666 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;@b8bc66f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:43:41,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 01:43:41,671 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:43:41,671 INFO L124 PetriNetUnfolderBase]: 2/33 cut-off events. [2023-08-04 01:43:41,671 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:43:41,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:43:41,671 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 01:43:41,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 01:43:41,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:43:41,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1584616022, now seen corresponding path program 1 times [2023-08-04 01:43:41,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:43:41,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070949458] [2023-08-04 01:43:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:41,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:43:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:43:41,778 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 01:43:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:43:41,835 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 01:43:41,836 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 01:43:41,837 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-04 01:43:41,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-04 01:43:41,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 01:43:41,839 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 01:43:41,840 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-04 01:43:41,841 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 01:43:41,841 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 01:43:41,875 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-04 01:43:41,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 169 transitions, 386 flow [2023-08-04 01:43:41,979 INFO L124 PetriNetUnfolderBase]: 133/818 cut-off events. [2023-08-04 01:43:41,980 INFO L125 PetriNetUnfolderBase]: For 72/75 co-relation queries the response was YES. [2023-08-04 01:43:41,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 818 events. 133/818 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4293 event pairs, 2 based on Foata normal form. 0/682 useless extension candidates. Maximal degree in co-relation 488. Up to 32 conditions per place. [2023-08-04 01:43:41,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 169 transitions, 386 flow [2023-08-04 01:43:41,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 169 transitions, 386 flow [2023-08-04 01:43:41,990 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:43:41,991 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 169 transitions, 386 flow [2023-08-04 01:43:41,991 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 169 transitions, 386 flow [2023-08-04 01:43:41,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 169 transitions, 386 flow [2023-08-04 01:43:42,054 INFO L124 PetriNetUnfolderBase]: 133/818 cut-off events. [2023-08-04 01:43:42,054 INFO L125 PetriNetUnfolderBase]: For 72/75 co-relation queries the response was YES. [2023-08-04 01:43:42,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 818 events. 133/818 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4293 event pairs, 2 based on Foata normal form. 0/682 useless extension candidates. Maximal degree in co-relation 488. Up to 32 conditions per place. [2023-08-04 01:43:42,071 INFO L119 LiptonReduction]: Number of co-enabled transitions 9420 [2023-08-04 01:43:45,209 INFO L134 LiptonReduction]: Checked pairs total: 32304 [2023-08-04 01:43:45,209 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-04 01:43:45,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:43:45,211 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;@b8bc66f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:43:45,212 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 01:43:45,216 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:43:45,216 INFO L124 PetriNetUnfolderBase]: 12/96 cut-off events. [2023-08-04 01:43:45,217 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-04 01:43:45,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:43:45,217 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 01:43:45,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 01:43:45,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:43:45,217 INFO L85 PathProgramCache]: Analyzing trace with hash -629918540, now seen corresponding path program 1 times [2023-08-04 01:43:45,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:43:45,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563629362] [2023-08-04 01:43:45,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:45,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:43:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:43:45,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:43:45,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:43:45,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563629362] [2023-08-04 01:43:45,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563629362] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:43:45,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355761545] [2023-08-04 01:43:45,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:45,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:43:45,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:43:45,357 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) [2023-08-04 01:43:45,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 01:43:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:43:45,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:43:45,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:43:45,482 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:43:45,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:43:45,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355761545] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:43:45,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:43:45,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 01:43:45,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410292671] [2023-08-04 01:43:45,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:43:45,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:43:45,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:43:45,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:43:45,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:43:45,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 287 [2023-08-04 01:43:45,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 68 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:45,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:43:45,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 287 [2023-08-04 01:43:45,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:43:47,244 INFO L124 PetriNetUnfolderBase]: 19014/27931 cut-off events. [2023-08-04 01:43:47,245 INFO L125 PetriNetUnfolderBase]: For 1885/1885 co-relation queries the response was YES. [2023-08-04 01:43:47,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54197 conditions, 27931 events. 19014/27931 cut-off events. For 1885/1885 co-relation queries the response was YES. Maximal size of possible extension queue 979. Compared 185403 event pairs, 8874 based on Foata normal form. 4632/28667 useless extension candidates. Maximal degree in co-relation 13842. Up to 24791 conditions per place. [2023-08-04 01:43:47,319 INFO L140 encePairwiseOnDemand]: 279/287 looper letters, 37 selfloop transitions, 5 changer transitions 18/79 dead transitions. [2023-08-04 01:43:47,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 79 transitions, 318 flow [2023-08-04 01:43:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:43:47,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:43:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 776 transitions. [2023-08-04 01:43:47,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407665505226481 [2023-08-04 01:43:47,331 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 776 transitions. [2023-08-04 01:43:47,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 776 transitions. [2023-08-04 01:43:47,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:43:47,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 776 transitions. [2023-08-04 01:43:47,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.2) internal successors, (776), 5 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:47,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:47,341 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:47,343 INFO L175 Difference]: Start difference. First operand has 61 places, 68 transitions, 184 flow. Second operand 5 states and 776 transitions. [2023-08-04 01:43:47,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 79 transitions, 318 flow [2023-08-04 01:43:47,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:43:47,369 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 131 flow [2023-08-04 01:43:47,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2023-08-04 01:43:47,372 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2023-08-04 01:43:47,372 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 131 flow [2023-08-04 01:43:47,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:47,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:43:47,373 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-04 01:43:47,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 01:43:47,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:43:47,578 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 01:43:47,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:43:47,578 INFO L85 PathProgramCache]: Analyzing trace with hash 122711985, now seen corresponding path program 1 times [2023-08-04 01:43:47,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:43:47,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875584088] [2023-08-04 01:43:47,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:47,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:43:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:43:47,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:43:47,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:43:47,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875584088] [2023-08-04 01:43:47,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875584088] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:43:47,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:43:47,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:43:47,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319709692] [2023-08-04 01:43:47,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:43:47,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:43:47,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:43:47,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:43:47,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:43:47,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 287 [2023-08-04 01:43:47,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 48 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:47,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:43:47,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 287 [2023-08-04 01:43:47,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:43:47,982 INFO L124 PetriNetUnfolderBase]: 4153/6504 cut-off events. [2023-08-04 01:43:47,982 INFO L125 PetriNetUnfolderBase]: For 324/324 co-relation queries the response was YES. [2023-08-04 01:43:47,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12382 conditions, 6504 events. 4153/6504 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 39405 event pairs, 2076 based on Foata normal form. 1/6059 useless extension candidates. Maximal degree in co-relation 3080. Up to 5433 conditions per place. [2023-08-04 01:43:48,009 INFO L140 encePairwiseOnDemand]: 284/287 looper letters, 31 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-04 01:43:48,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 204 flow [2023-08-04 01:43:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:43:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:43:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-08-04 01:43:48,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5365853658536586 [2023-08-04 01:43:48,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-08-04 01:43:48,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-08-04 01:43:48,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:43:48,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-08-04 01:43:48,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:48,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:48,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:48,015 INFO L175 Difference]: Start difference. First operand has 63 places, 48 transitions, 131 flow. Second operand 3 states and 462 transitions. [2023-08-04 01:43:48,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 204 flow [2023-08-04 01:43:48,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 201 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-04 01:43:48,017 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 127 flow [2023-08-04 01:43:48,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-08-04 01:43:48,018 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -7 predicate places. [2023-08-04 01:43:48,018 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 127 flow [2023-08-04 01:43:48,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:48,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:43:48,019 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:43:48,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 01:43:48,019 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 01:43:48,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:43:48,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1002742314, now seen corresponding path program 1 times [2023-08-04 01:43:48,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:43:48,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827514016] [2023-08-04 01:43:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:48,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:43:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:43:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:43:48,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:43:48,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827514016] [2023-08-04 01:43:48,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827514016] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:43:48,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025697267] [2023-08-04 01:43:48,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:48,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:43:48,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:43:48,106 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) [2023-08-04 01:43:48,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 01:43:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:43:48,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:43:48,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:43:48,194 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:43:48,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:43:48,210 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:43:48,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025697267] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:43:48,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:43:48,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 01:43:48,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947492672] [2023-08-04 01:43:48,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:43:48,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:43:48,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:43:48,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:43:48,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:43:48,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 287 [2023-08-04 01:43:48,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:48,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:43:48,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 287 [2023-08-04 01:43:48,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:43:48,511 INFO L124 PetriNetUnfolderBase]: 3533/5471 cut-off events. [2023-08-04 01:43:48,511 INFO L125 PetriNetUnfolderBase]: For 229/229 co-relation queries the response was YES. [2023-08-04 01:43:48,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10378 conditions, 5471 events. 3533/5471 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 31873 event pairs, 1066 based on Foata normal form. 4/5132 useless extension candidates. Maximal degree in co-relation 7751. Up to 4513 conditions per place. [2023-08-04 01:43:48,533 INFO L140 encePairwiseOnDemand]: 284/287 looper letters, 37 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-08-04 01:43:48,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 230 flow [2023-08-04 01:43:48,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:43:48,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:43:48,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 609 transitions. [2023-08-04 01:43:48,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5304878048780488 [2023-08-04 01:43:48,535 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 609 transitions. [2023-08-04 01:43:48,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 609 transitions. [2023-08-04 01:43:48,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:43:48,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 609 transitions. [2023-08-04 01:43:48,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 152.25) internal successors, (609), 4 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:48,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:48,538 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:48,538 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 127 flow. Second operand 4 states and 609 transitions. [2023-08-04 01:43:48,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 230 flow [2023-08-04 01:43:48,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:43:48,540 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 124 flow [2023-08-04 01:43:48,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-08-04 01:43:48,540 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -6 predicate places. [2023-08-04 01:43:48,540 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 124 flow [2023-08-04 01:43:48,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:48,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:43:48,541 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:43:48,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 01:43:48,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-04 01:43:48,746 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 01:43:48,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:43:48,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1084835390, now seen corresponding path program 1 times [2023-08-04 01:43:48,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:43:48,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735460987] [2023-08-04 01:43:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:48,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:43:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:43:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:43:48,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:43:48,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735460987] [2023-08-04 01:43:48,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735460987] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:43:48,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203995478] [2023-08-04 01:43:48,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:48,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:43:48,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:43:48,819 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) [2023-08-04 01:43:48,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 01:43:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:43:48,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:43:48,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:43:48,905 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:43:48,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:43:48,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203995478] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:43:48,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:43:48,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:43:48,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441615393] [2023-08-04 01:43:48,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:43:48,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:43:48,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:43:48,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:43:48,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:43:48,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 287 [2023-08-04 01:43:48,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:48,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:43:48,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 287 [2023-08-04 01:43:48,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:43:49,145 INFO L124 PetriNetUnfolderBase]: 2509/3651 cut-off events. [2023-08-04 01:43:49,145 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2023-08-04 01:43:49,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7246 conditions, 3651 events. 2509/3651 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 17647 event pairs, 202 based on Foata normal form. 256/3777 useless extension candidates. Maximal degree in co-relation 3185. Up to 1600 conditions per place. [2023-08-04 01:43:49,149 INFO L140 encePairwiseOnDemand]: 284/287 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2023-08-04 01:43:49,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 83 transitions, 326 flow [2023-08-04 01:43:49,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:43:49,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:43:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 775 transitions. [2023-08-04 01:43:49,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5400696864111498 [2023-08-04 01:43:49,151 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 775 transitions. [2023-08-04 01:43:49,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 775 transitions. [2023-08-04 01:43:49,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:43:49,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 775 transitions. [2023-08-04 01:43:49,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:49,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:49,155 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:49,155 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 124 flow. Second operand 5 states and 775 transitions. [2023-08-04 01:43:49,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 83 transitions, 326 flow [2023-08-04 01:43:49,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 83 transitions, 319 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 01:43:49,158 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2023-08-04 01:43:49,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2023-08-04 01:43:49,159 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -7 predicate places. [2023-08-04 01:43:49,159 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2023-08-04 01:43:49,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:49,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-04 01:43:49,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-04 01:43:49,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 01:43:49,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:43:49,365 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 01:43:49,365 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE (1/2) [2023-08-04 01:43:49,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 169 transitions, 386 flow [2023-08-04 01:43:49,413 INFO L124 PetriNetUnfolderBase]: 133/818 cut-off events. [2023-08-04 01:43:49,414 INFO L125 PetriNetUnfolderBase]: For 72/75 co-relation queries the response was YES. [2023-08-04 01:43:49,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 818 events. 133/818 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4293 event pairs, 2 based on Foata normal form. 0/682 useless extension candidates. Maximal degree in co-relation 488. Up to 32 conditions per place. [2023-08-04 01:43:49,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 169 transitions, 386 flow [2023-08-04 01:43:49,418 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 169 transitions, 386 flow [2023-08-04 01:43:49,418 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:43:49,418 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 169 transitions, 386 flow [2023-08-04 01:43:49,418 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 169 transitions, 386 flow [2023-08-04 01:43:49,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 169 transitions, 386 flow [2023-08-04 01:43:49,465 INFO L124 PetriNetUnfolderBase]: 133/818 cut-off events. [2023-08-04 01:43:49,465 INFO L125 PetriNetUnfolderBase]: For 72/75 co-relation queries the response was YES. [2023-08-04 01:43:49,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 818 events. 133/818 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4293 event pairs, 2 based on Foata normal form. 0/682 useless extension candidates. Maximal degree in co-relation 488. Up to 32 conditions per place. [2023-08-04 01:43:49,476 INFO L119 LiptonReduction]: Number of co-enabled transitions 9420 [2023-08-04 01:43:52,711 INFO L134 LiptonReduction]: Checked pairs total: 32304 [2023-08-04 01:43:52,711 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-04 01:43:52,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 01:43:52,712 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;@b8bc66f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:43:52,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 01:43:52,714 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:43:52,714 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-04 01:43:52,714 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:43:52,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:43:52,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 01:43:52,715 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:43:52,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:43:52,715 INFO L85 PathProgramCache]: Analyzing trace with hash 884916897, now seen corresponding path program 1 times [2023-08-04 01:43:52,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:43:52,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315148897] [2023-08-04 01:43:52,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:52,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:43:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:43:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:43:52,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:43:52,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315148897] [2023-08-04 01:43:52,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315148897] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:43:52,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:43:52,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:43:52,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433585541] [2023-08-04 01:43:52,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:43:52,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:43:52,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:43:52,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:43:52,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:43:52,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 287 [2023-08-04 01:43:52,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 68 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:52,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:43:52,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 287 [2023-08-04 01:43:52,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:43:54,049 INFO L124 PetriNetUnfolderBase]: 18932/28209 cut-off events. [2023-08-04 01:43:54,049 INFO L125 PetriNetUnfolderBase]: For 1940/1940 co-relation queries the response was YES. [2023-08-04 01:43:54,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54359 conditions, 28209 events. 18932/28209 cut-off events. For 1940/1940 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 191328 event pairs, 9956 based on Foata normal form. 4613/28971 useless extension candidates. Maximal degree in co-relation 13996. Up to 24716 conditions per place. [2023-08-04 01:43:54,135 INFO L140 encePairwiseOnDemand]: 280/287 looper letters, 45 selfloop transitions, 2 changer transitions 3/70 dead transitions. [2023-08-04 01:43:54,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 284 flow [2023-08-04 01:43:54,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:43:54,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:43:54,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-08-04 01:43:54,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2023-08-04 01:43:54,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-08-04 01:43:54,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-08-04 01:43:54,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:43:54,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-08-04 01:43:54,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:54,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:54,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:54,139 INFO L175 Difference]: Start difference. First operand has 61 places, 68 transitions, 184 flow. Second operand 3 states and 483 transitions. [2023-08-04 01:43:54,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 284 flow [2023-08-04 01:43:54,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 284 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 01:43:54,143 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 174 flow [2023-08-04 01:43:54,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-08-04 01:43:54,144 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2023-08-04 01:43:54,144 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 174 flow [2023-08-04 01:43:54,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:54,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:43:54,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:43:54,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 01:43:54,144 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:43:54,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:43:54,145 INFO L85 PathProgramCache]: Analyzing trace with hash -833626004, now seen corresponding path program 1 times [2023-08-04 01:43:54,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:43:54,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353730302] [2023-08-04 01:43:54,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:54,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:43:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:43:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:43:54,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:43:54,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353730302] [2023-08-04 01:43:54,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353730302] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:43:54,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62986101] [2023-08-04 01:43:54,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:54,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:43:54,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:43:54,185 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) [2023-08-04 01:43:54,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 01:43:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:43:54,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:43:54,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:43:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 01:43:54,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:43:54,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62986101] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:43:54,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:43:54,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:43:54,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719957528] [2023-08-04 01:43:54,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:43:54,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:43:54,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:43:54,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:43:54,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:43:54,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 287 [2023-08-04 01:43:54,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:54,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:43:54,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 287 [2023-08-04 01:43:54,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:43:55,366 INFO L124 PetriNetUnfolderBase]: 16912/24983 cut-off events. [2023-08-04 01:43:55,367 INFO L125 PetriNetUnfolderBase]: For 1774/1774 co-relation queries the response was YES. [2023-08-04 01:43:55,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48407 conditions, 24983 events. 16912/24983 cut-off events. For 1774/1774 co-relation queries the response was YES. Maximal size of possible extension queue 923. Compared 165159 event pairs, 10820 based on Foata normal form. 0/22285 useless extension candidates. Maximal degree in co-relation 48361. Up to 21722 conditions per place. [2023-08-04 01:43:55,448 INFO L140 encePairwiseOnDemand]: 284/287 looper letters, 54 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-04 01:43:55,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 314 flow [2023-08-04 01:43:55,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:43:55,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:43:55,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-08-04 01:43:55,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632984901277585 [2023-08-04 01:43:55,449 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-08-04 01:43:55,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-08-04 01:43:55,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:43:55,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-08-04 01:43:55,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:55,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:55,452 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:55,452 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 174 flow. Second operand 3 states and 485 transitions. [2023-08-04 01:43:55,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 76 transitions, 314 flow [2023-08-04 01:43:55,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 306 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 01:43:55,457 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 178 flow [2023-08-04 01:43:55,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2023-08-04 01:43:55,458 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2023-08-04 01:43:55,458 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 178 flow [2023-08-04 01:43:55,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:55,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:43:55,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:43:55,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-04 01:43:55,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:43:55,663 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:43:55,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:43:55,663 INFO L85 PathProgramCache]: Analyzing trace with hash 794330112, now seen corresponding path program 1 times [2023-08-04 01:43:55,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:43:55,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448715520] [2023-08-04 01:43:55,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:55,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:43:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:43:55,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 01:43:55,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:43:55,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448715520] [2023-08-04 01:43:55,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448715520] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:43:55,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125666045] [2023-08-04 01:43:55,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:55,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:43:55,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:43:55,697 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) [2023-08-04 01:43:55,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 01:43:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:43:55,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:43:55,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:43:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 01:43:55,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:43:55,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125666045] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:43:55,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:43:55,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:43:55,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554505944] [2023-08-04 01:43:55,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:43:55,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:43:55,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:43:55,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:43:55,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:43:55,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 287 [2023-08-04 01:43:55,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:55,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:43:55,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 287 [2023-08-04 01:43:55,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:43:56,962 INFO L124 PetriNetUnfolderBase]: 13776/20035 cut-off events. [2023-08-04 01:43:56,962 INFO L125 PetriNetUnfolderBase]: For 1520/1520 co-relation queries the response was YES. [2023-08-04 01:43:56,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40336 conditions, 20035 events. 13776/20035 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 123363 event pairs, 7032 based on Foata normal form. 0/18481 useless extension candidates. Maximal degree in co-relation 18764. Up to 13318 conditions per place. [2023-08-04 01:43:57,014 INFO L140 encePairwiseOnDemand]: 284/287 looper letters, 63 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-08-04 01:43:57,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 362 flow [2023-08-04 01:43:57,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:43:57,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:43:57,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2023-08-04 01:43:57,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725900116144018 [2023-08-04 01:43:57,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 493 transitions. [2023-08-04 01:43:57,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 493 transitions. [2023-08-04 01:43:57,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:43:57,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 493 transitions. [2023-08-04 01:43:57,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:57,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:57,019 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:57,019 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 178 flow. Second operand 3 states and 493 transitions. [2023-08-04 01:43:57,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 362 flow [2023-08-04 01:43:57,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:43:57,020 INFO L231 Difference]: Finished difference. Result has 63 places, 64 transitions, 188 flow [2023-08-04 01:43:57,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=63, PETRI_TRANSITIONS=64} [2023-08-04 01:43:57,021 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2023-08-04 01:43:57,021 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 64 transitions, 188 flow [2023-08-04 01:43:57,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:57,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:43:57,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:43:57,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 01:43:57,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:43:57,226 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:43:57,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:43:57,227 INFO L85 PathProgramCache]: Analyzing trace with hash -272784900, now seen corresponding path program 1 times [2023-08-04 01:43:57,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:43:57,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620006962] [2023-08-04 01:43:57,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:57,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:43:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:43:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 01:43:57,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:43:57,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620006962] [2023-08-04 01:43:57,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620006962] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:43:57,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:43:57,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:43:57,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777971888] [2023-08-04 01:43:57,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:43:57,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:43:57,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:43:57,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:43:57,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:43:57,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 287 [2023-08-04 01:43:57,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 64 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:57,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:43:57,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 287 [2023-08-04 01:43:57,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:43:58,437 INFO L124 PetriNetUnfolderBase]: 19086/27715 cut-off events. [2023-08-04 01:43:58,438 INFO L125 PetriNetUnfolderBase]: For 6086/6086 co-relation queries the response was YES. [2023-08-04 01:43:58,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58324 conditions, 27715 events. 19086/27715 cut-off events. For 6086/6086 co-relation queries the response was YES. Maximal size of possible extension queue 757. Compared 172416 event pairs, 8807 based on Foata normal form. 325/27293 useless extension candidates. Maximal degree in co-relation 42126. Up to 25010 conditions per place. [2023-08-04 01:43:58,539 INFO L140 encePairwiseOnDemand]: 280/287 looper letters, 59 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2023-08-04 01:43:58,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 78 transitions, 353 flow [2023-08-04 01:43:58,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:43:58,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:43:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-08-04 01:43:58,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423925667828107 [2023-08-04 01:43:58,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-08-04 01:43:58,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-08-04 01:43:58,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:43:58,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-08-04 01:43:58,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:58,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:58,543 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:58,543 INFO L175 Difference]: Start difference. First operand has 63 places, 64 transitions, 188 flow. Second operand 3 states and 467 transitions. [2023-08-04 01:43:58,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 78 transitions, 353 flow [2023-08-04 01:43:58,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 78 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:43:58,556 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 211 flow [2023-08-04 01:43:58,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2023-08-04 01:43:58,556 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2023-08-04 01:43:58,556 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 211 flow [2023-08-04 01:43:58,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:58,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:43:58,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:43:58,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 01:43:58,557 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:43:58,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:43:58,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1295475786, now seen corresponding path program 1 times [2023-08-04 01:43:58,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:43:58,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676824390] [2023-08-04 01:43:58,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:58,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:43:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:43:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 01:43:58,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:43:58,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676824390] [2023-08-04 01:43:58,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676824390] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:43:58,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237528642] [2023-08-04 01:43:58,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:58,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:43:58,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:43:58,592 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) [2023-08-04 01:43:58,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 01:43:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:43:58,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:43:58,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:43:58,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 01:43:58,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:43:58,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237528642] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:43:58,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:43:58,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-04 01:43:58,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194127078] [2023-08-04 01:43:58,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:43:58,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:43:58,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:43:58,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:43:58,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:43:58,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 287 [2023-08-04 01:43:58,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:58,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:43:58,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 287 [2023-08-04 01:43:58,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:43:59,589 INFO L124 PetriNetUnfolderBase]: 13993/20819 cut-off events. [2023-08-04 01:43:59,589 INFO L125 PetriNetUnfolderBase]: For 4795/5450 co-relation queries the response was YES. [2023-08-04 01:43:59,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45569 conditions, 20819 events. 13993/20819 cut-off events. For 4795/5450 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 133959 event pairs, 7949 based on Foata normal form. 0/19590 useless extension candidates. Maximal degree in co-relation 32661. Up to 15203 conditions per place. [2023-08-04 01:43:59,688 INFO L140 encePairwiseOnDemand]: 284/287 looper letters, 66 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-04 01:43:59,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 88 transitions, 405 flow [2023-08-04 01:43:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:43:59,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:43:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2023-08-04 01:43:59,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725900116144018 [2023-08-04 01:43:59,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 493 transitions. [2023-08-04 01:43:59,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 493 transitions. [2023-08-04 01:43:59,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:43:59,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 493 transitions. [2023-08-04 01:43:59,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:59,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:59,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:59,693 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 211 flow. Second operand 3 states and 493 transitions. [2023-08-04 01:43:59,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 88 transitions, 405 flow [2023-08-04 01:43:59,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 88 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:43:59,706 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 220 flow [2023-08-04 01:43:59,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-08-04 01:43:59,707 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2023-08-04 01:43:59,707 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 220 flow [2023-08-04 01:43:59,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:43:59,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:43:59,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:43:59,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-04 01:43:59,909 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 [2023-08-04 01:43:59,909 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:43:59,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:43:59,909 INFO L85 PathProgramCache]: Analyzing trace with hash -822352714, now seen corresponding path program 1 times [2023-08-04 01:43:59,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:43:59,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128620613] [2023-08-04 01:43:59,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:59,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:43:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:43:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 01:43:59,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:43:59,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128620613] [2023-08-04 01:43:59,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128620613] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:43:59,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999914702] [2023-08-04 01:43:59,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:59,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:43:59,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:43:59,949 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) [2023-08-04 01:43:59,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 01:44:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:00,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:44:00,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 01:44:00,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:44:00,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 01:44:00,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999914702] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:44:00,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:44:00,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 01:44:00,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501465126] [2023-08-04 01:44:00,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:44:00,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:44:00,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:00,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:44:00,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:44:00,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 287 [2023-08-04 01:44:00,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 220 flow. Second operand has 5 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) [2023-08-04 01:44:00,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:00,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 287 [2023-08-04 01:44:00,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:01,143 INFO L124 PetriNetUnfolderBase]: 12876/19027 cut-off events. [2023-08-04 01:44:01,143 INFO L125 PetriNetUnfolderBase]: For 4786/5406 co-relation queries the response was YES. [2023-08-04 01:44:01,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42412 conditions, 19027 events. 12876/19027 cut-off events. For 4786/5406 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 120275 event pairs, 7364 based on Foata normal form. 2/18118 useless extension candidates. Maximal degree in co-relation 29958. Up to 17447 conditions per place. [2023-08-04 01:44:01,229 INFO L140 encePairwiseOnDemand]: 283/287 looper letters, 51 selfloop transitions, 3 changer transitions 1/75 dead transitions. [2023-08-04 01:44:01,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 346 flow [2023-08-04 01:44:01,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:44:01,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:44:01,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 619 transitions. [2023-08-04 01:44:01,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.539198606271777 [2023-08-04 01:44:01,231 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 619 transitions. [2023-08-04 01:44:01,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 619 transitions. [2023-08-04 01:44:01,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:01,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 619 transitions. [2023-08-04 01:44:01,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.75) internal successors, (619), 4 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:01,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:01,234 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:01,234 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 220 flow. Second operand 4 states and 619 transitions. [2023-08-04 01:44:01,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 346 flow [2023-08-04 01:44:01,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 344 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:44:01,347 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 232 flow [2023-08-04 01:44:01,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2023-08-04 01:44:01,347 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2023-08-04 01:44:01,347 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 232 flow [2023-08-04 01:44:01,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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) [2023-08-04 01:44:01,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:01,348 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] [2023-08-04 01:44:01,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 01:44:01,548 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 [2023-08-04 01:44:01,548 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:01,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:01,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1416379170, now seen corresponding path program 1 times [2023-08-04 01:44:01,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:01,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971053606] [2023-08-04 01:44:01,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:01,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:44:01,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:01,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971053606] [2023-08-04 01:44:01,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971053606] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:44:01,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485436651] [2023-08-04 01:44:01,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:01,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:01,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:44:01,599 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) [2023-08-04 01:44:01,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 01:44:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:01,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:44:01,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:44:01,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:44:01,725 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:44:01,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485436651] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:44:01,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:44:01,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 01:44:01,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965852206] [2023-08-04 01:44:01,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:44:01,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:44:01,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:01,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:44:01,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:44:01,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 287 [2023-08-04 01:44:01,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 232 flow. Second operand has 5 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:01,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:01,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 287 [2023-08-04 01:44:01,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:02,853 INFO L124 PetriNetUnfolderBase]: 12747/18558 cut-off events. [2023-08-04 01:44:02,853 INFO L125 PetriNetUnfolderBase]: For 3156/4229 co-relation queries the response was YES. [2023-08-04 01:44:02,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41184 conditions, 18558 events. 12747/18558 cut-off events. For 3156/4229 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 113077 event pairs, 2159 based on Foata normal form. 44/17941 useless extension candidates. Maximal degree in co-relation 33793. Up to 14483 conditions per place. [2023-08-04 01:44:02,947 INFO L140 encePairwiseOnDemand]: 283/287 looper letters, 74 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2023-08-04 01:44:02,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 98 transitions, 460 flow [2023-08-04 01:44:02,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:44:02,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:44:02,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 640 transitions. [2023-08-04 01:44:02,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574912891986062 [2023-08-04 01:44:02,950 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 640 transitions. [2023-08-04 01:44:02,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 640 transitions. [2023-08-04 01:44:02,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:02,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 640 transitions. [2023-08-04 01:44:02,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:02,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:02,953 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:02,953 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 232 flow. Second operand 4 states and 640 transitions. [2023-08-04 01:44:02,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 98 transitions, 460 flow [2023-08-04 01:44:03,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 98 transitions, 451 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 01:44:03,040 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 243 flow [2023-08-04 01:44:03,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=243, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2023-08-04 01:44:03,040 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 12 predicate places. [2023-08-04 01:44:03,040 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 243 flow [2023-08-04 01:44:03,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:03,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:03,041 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] [2023-08-04 01:44:03,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-04 01:44:03,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-04 01:44:03,245 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:03,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:03,245 INFO L85 PathProgramCache]: Analyzing trace with hash 788994473, now seen corresponding path program 1 times [2023-08-04 01:44:03,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:03,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380122783] [2023-08-04 01:44:03,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:03,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:44:03,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:03,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380122783] [2023-08-04 01:44:03,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380122783] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:44:03,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:44:03,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 01:44:03,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078330407] [2023-08-04 01:44:03,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:44:03,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:44:03,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:03,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:44:03,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:44:03,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 287 [2023-08-04 01:44:03,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:03,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:03,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 287 [2023-08-04 01:44:03,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:04,129 INFO L124 PetriNetUnfolderBase]: 5353/12044 cut-off events. [2023-08-04 01:44:04,129 INFO L125 PetriNetUnfolderBase]: For 5698/5698 co-relation queries the response was YES. [2023-08-04 01:44:04,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25908 conditions, 12044 events. 5353/12044 cut-off events. For 5698/5698 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 108892 event pairs, 1884 based on Foata normal form. 2332/14337 useless extension candidates. Maximal degree in co-relation 16140. Up to 5259 conditions per place. [2023-08-04 01:44:04,171 INFO L140 encePairwiseOnDemand]: 271/287 looper letters, 62 selfloop transitions, 16 changer transitions 2/96 dead transitions. [2023-08-04 01:44:04,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 96 transitions, 542 flow [2023-08-04 01:44:04,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:44:04,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:44:04,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-08-04 01:44:04,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.537746806039489 [2023-08-04 01:44:04,173 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-08-04 01:44:04,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-08-04 01:44:04,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:04,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-08-04 01:44:04,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:04,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:04,175 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:04,175 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 243 flow. Second operand 3 states and 463 transitions. [2023-08-04 01:44:04,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 96 transitions, 542 flow [2023-08-04 01:44:04,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 534 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-04 01:44:04,192 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 265 flow [2023-08-04 01:44:04,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2023-08-04 01:44:04,193 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2023-08-04 01:44:04,193 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 265 flow [2023-08-04 01:44:04,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:04,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:04,193 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] [2023-08-04 01:44:04,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 01:44:04,194 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:04,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:04,194 INFO L85 PathProgramCache]: Analyzing trace with hash 510847651, now seen corresponding path program 2 times [2023-08-04 01:44:04,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:04,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762859084] [2023-08-04 01:44:04,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:04,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:04,237 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 01:44:04,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:04,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762859084] [2023-08-04 01:44:04,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762859084] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:44:04,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603145288] [2023-08-04 01:44:04,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 01:44:04,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:04,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:44:04,238 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) [2023-08-04 01:44:04,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-04 01:44:04,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 01:44:04,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 01:44:04,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:44:04,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:04,333 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 01:44:04,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:44:04,343 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 01:44:04,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603145288] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:44:04,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:44:04,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 01:44:04,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5621872] [2023-08-04 01:44:04,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:44:04,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:44:04,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:04,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:44:04,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:44:04,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 287 [2023-08-04 01:44:04,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 147.8) internal successors, (739), 5 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:04,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:04,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 287 [2023-08-04 01:44:04,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:04,741 INFO L124 PetriNetUnfolderBase]: 3199/6210 cut-off events. [2023-08-04 01:44:04,741 INFO L125 PetriNetUnfolderBase]: For 4497/4688 co-relation queries the response was YES. [2023-08-04 01:44:04,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16524 conditions, 6210 events. 3199/6210 cut-off events. For 4497/4688 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 44940 event pairs, 779 based on Foata normal form. 228/6379 useless extension candidates. Maximal degree in co-relation 14152. Up to 2026 conditions per place. [2023-08-04 01:44:04,760 INFO L140 encePairwiseOnDemand]: 283/287 looper letters, 83 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2023-08-04 01:44:04,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 107 transitions, 588 flow [2023-08-04 01:44:04,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:44:04,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:44:04,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 649 transitions. [2023-08-04 01:44:04,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5653310104529616 [2023-08-04 01:44:04,762 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 649 transitions. [2023-08-04 01:44:04,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 649 transitions. [2023-08-04 01:44:04,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:04,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 649 transitions. [2023-08-04 01:44:04,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:04,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:04,765 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:04,765 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 265 flow. Second operand 4 states and 649 transitions. [2023-08-04 01:44:04,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 107 transitions, 588 flow [2023-08-04 01:44:04,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 107 transitions, 542 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 01:44:04,779 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 264 flow [2023-08-04 01:44:04,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2023-08-04 01:44:04,780 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 15 predicate places. [2023-08-04 01:44:04,780 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 264 flow [2023-08-04 01:44:04,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.8) internal successors, (739), 5 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:04,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:04,780 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] [2023-08-04 01:44:04,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-04 01:44:04,985 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 [2023-08-04 01:44:04,985 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:04,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:04,985 INFO L85 PathProgramCache]: Analyzing trace with hash -973756614, now seen corresponding path program 1 times [2023-08-04 01:44:04,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:04,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088762490] [2023-08-04 01:44:04,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:04,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:05,051 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 01:44:05,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:05,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088762490] [2023-08-04 01:44:05,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088762490] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:44:05,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717123333] [2023-08-04 01:44:05,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:05,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:05,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:44:05,053 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) [2023-08-04 01:44:05,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-04 01:44:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:05,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-04 01:44:05,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 01:44:05,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:44:05,225 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 01:44:05,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717123333] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:44:05,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:44:05,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 8 [2023-08-04 01:44:05,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749194214] [2023-08-04 01:44:05,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:44:05,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 01:44:05,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:05,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 01:44:05,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-04 01:44:05,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 287 [2023-08-04 01:44:05,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 264 flow. Second operand has 8 states, 8 states have (on average 131.625) internal successors, (1053), 8 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:05,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:05,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 287 [2023-08-04 01:44:05,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:06,325 INFO L124 PetriNetUnfolderBase]: 7801/14852 cut-off events. [2023-08-04 01:44:06,325 INFO L125 PetriNetUnfolderBase]: For 17557/17557 co-relation queries the response was YES. [2023-08-04 01:44:06,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40249 conditions, 14852 events. 7801/14852 cut-off events. For 17557/17557 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 118557 event pairs, 2218 based on Foata normal form. 651/15486 useless extension candidates. Maximal degree in co-relation 34053. Up to 4250 conditions per place. [2023-08-04 01:44:06,388 INFO L140 encePairwiseOnDemand]: 268/287 looper letters, 241 selfloop transitions, 54 changer transitions 15/320 dead transitions. [2023-08-04 01:44:06,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 320 transitions, 1786 flow [2023-08-04 01:44:06,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-04 01:44:06,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-04 01:44:06,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2277 transitions. [2023-08-04 01:44:06,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4958623693379791 [2023-08-04 01:44:06,392 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2277 transitions. [2023-08-04 01:44:06,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2277 transitions. [2023-08-04 01:44:06,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:06,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2277 transitions. [2023-08-04 01:44:06,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 142.3125) internal successors, (2277), 16 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:06,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 287.0) internal successors, (4879), 17 states have internal predecessors, (4879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:06,401 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 287.0) internal successors, (4879), 17 states have internal predecessors, (4879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:06,401 INFO L175 Difference]: Start difference. First operand has 76 places, 68 transitions, 264 flow. Second operand 16 states and 2277 transitions. [2023-08-04 01:44:06,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 320 transitions, 1786 flow [2023-08-04 01:44:06,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 320 transitions, 1766 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-04 01:44:06,489 INFO L231 Difference]: Finished difference. Result has 105 places, 118 transitions, 744 flow [2023-08-04 01:44:06,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=744, PETRI_PLACES=105, PETRI_TRANSITIONS=118} [2023-08-04 01:44:06,489 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 44 predicate places. [2023-08-04 01:44:06,489 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 118 transitions, 744 flow [2023-08-04 01:44:06,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 131.625) internal successors, (1053), 8 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:06,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:06,490 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] [2023-08-04 01:44:06,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-04 01:44:06,695 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 [2023-08-04 01:44:06,695 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:06,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:06,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1985847125, now seen corresponding path program 1 times [2023-08-04 01:44:06,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:06,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057433152] [2023-08-04 01:44:06,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:06,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:06,924 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 01:44:06,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:06,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057433152] [2023-08-04 01:44:06,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057433152] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:44:06,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586808721] [2023-08-04 01:44:06,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:06,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:06,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:44:06,926 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) [2023-08-04 01:44:06,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-04 01:44:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:07,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-04 01:44:07,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 01:44:07,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:44:07,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586808721] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:44:07,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:44:07,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-08-04 01:44:07,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322430711] [2023-08-04 01:44:07,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:44:07,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-04 01:44:07,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:07,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-04 01:44:07,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-08-04 01:44:07,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 287 [2023-08-04 01:44:07,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 118 transitions, 744 flow. Second operand has 10 states, 10 states have (on average 127.2) internal successors, (1272), 10 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:07,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:07,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 287 [2023-08-04 01:44:07,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:08,314 INFO L124 PetriNetUnfolderBase]: 5982/11579 cut-off events. [2023-08-04 01:44:08,314 INFO L125 PetriNetUnfolderBase]: For 26888/26888 co-relation queries the response was YES. [2023-08-04 01:44:08,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39501 conditions, 11579 events. 5982/11579 cut-off events. For 26888/26888 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 90263 event pairs, 1364 based on Foata normal form. 353/11928 useless extension candidates. Maximal degree in co-relation 38350. Up to 3482 conditions per place. [2023-08-04 01:44:08,363 INFO L140 encePairwiseOnDemand]: 269/287 looper letters, 160 selfloop transitions, 28 changer transitions 97/293 dead transitions. [2023-08-04 01:44:08,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 293 transitions, 2337 flow [2023-08-04 01:44:08,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-04 01:44:08,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-04 01:44:08,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1690 transitions. [2023-08-04 01:44:08,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4907084785133566 [2023-08-04 01:44:08,367 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1690 transitions. [2023-08-04 01:44:08,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1690 transitions. [2023-08-04 01:44:08,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:08,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1690 transitions. [2023-08-04 01:44:08,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 140.83333333333334) internal successors, (1690), 12 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:08,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 287.0) internal successors, (3731), 13 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:08,383 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 287.0) internal successors, (3731), 13 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:08,383 INFO L175 Difference]: Start difference. First operand has 105 places, 118 transitions, 744 flow. Second operand 12 states and 1690 transitions. [2023-08-04 01:44:08,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 293 transitions, 2337 flow [2023-08-04 01:44:08,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 293 transitions, 2250 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-08-04 01:44:08,520 INFO L231 Difference]: Finished difference. Result has 117 places, 94 transitions, 648 flow [2023-08-04 01:44:08,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=648, PETRI_PLACES=117, PETRI_TRANSITIONS=94} [2023-08-04 01:44:08,521 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 56 predicate places. [2023-08-04 01:44:08,521 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 94 transitions, 648 flow [2023-08-04 01:44:08,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.2) internal successors, (1272), 10 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:08,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:08,522 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] [2023-08-04 01:44:08,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-04 01:44:08,724 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 [2023-08-04 01:44:08,725 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:08,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:08,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1980824697, now seen corresponding path program 2 times [2023-08-04 01:44:08,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:08,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169072924] [2023-08-04 01:44:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:08,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:08,891 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 01:44:08,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:08,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169072924] [2023-08-04 01:44:08,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169072924] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:44:08,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626401853] [2023-08-04 01:44:08,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 01:44:08,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:08,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:44:08,894 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) [2023-08-04 01:44:08,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-04 01:44:08,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 01:44:08,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 01:44:08,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-04 01:44:08,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 01:44:09,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:44:09,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626401853] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:44:09,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:44:09,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-08-04 01:44:09,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010141519] [2023-08-04 01:44:09,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:44:09,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-04 01:44:09,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:09,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-04 01:44:09,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-08-04 01:44:09,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 287 [2023-08-04 01:44:09,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 94 transitions, 648 flow. Second operand has 10 states, 10 states have (on average 127.2) internal successors, (1272), 10 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:09,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:09,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 287 [2023-08-04 01:44:09,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:09,775 INFO L124 PetriNetUnfolderBase]: 2463/4969 cut-off events. [2023-08-04 01:44:09,775 INFO L125 PetriNetUnfolderBase]: For 12158/12158 co-relation queries the response was YES. [2023-08-04 01:44:09,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17456 conditions, 4969 events. 2463/4969 cut-off events. For 12158/12158 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 33878 event pairs, 680 based on Foata normal form. 2/4967 useless extension candidates. Maximal degree in co-relation 17423. Up to 1228 conditions per place. [2023-08-04 01:44:09,790 INFO L140 encePairwiseOnDemand]: 273/287 looper letters, 0 selfloop transitions, 0 changer transitions 218/218 dead transitions. [2023-08-04 01:44:09,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 218 transitions, 1741 flow [2023-08-04 01:44:09,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-04 01:44:09,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-04 01:44:09,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1643 transitions. [2023-08-04 01:44:09,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47706155632984903 [2023-08-04 01:44:09,793 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1643 transitions. [2023-08-04 01:44:09,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1643 transitions. [2023-08-04 01:44:09,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:09,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1643 transitions. [2023-08-04 01:44:09,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.91666666666666) internal successors, (1643), 12 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:09,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 287.0) internal successors, (3731), 13 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:09,799 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 287.0) internal successors, (3731), 13 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:09,799 INFO L175 Difference]: Start difference. First operand has 117 places, 94 transitions, 648 flow. Second operand 12 states and 1643 transitions. [2023-08-04 01:44:09,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 218 transitions, 1741 flow [2023-08-04 01:44:09,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 218 transitions, 1626 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-08-04 01:44:09,835 INFO L231 Difference]: Finished difference. Result has 114 places, 0 transitions, 0 flow [2023-08-04 01:44:09,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=114, PETRI_TRANSITIONS=0} [2023-08-04 01:44:09,836 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 53 predicate places. [2023-08-04 01:44:09,836 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 0 transitions, 0 flow [2023-08-04 01:44:09,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.2) internal successors, (1272), 10 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:09,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 01:44:09,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-04 01:44:10,043 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 [2023-08-04 01:44:10,043 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:44:10,044 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (2/2) [2023-08-04 01:44:10,044 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 01:44:10,044 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 01:44:10,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 01:44:10 BasicIcfg [2023-08-04 01:44:10,048 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 01:44:10,048 INFO L158 Benchmark]: Toolchain (without parser) took 32938.18ms. Allocated memory was 327.2MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 285.4MB in the beginning and 1.6GB in the end (delta: -1.3GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. [2023-08-04 01:44:10,048 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 327.2MB. Free memory is still 274.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 01:44:10,048 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.81ms. Allocated memory is still 327.2MB. Free memory was 285.4MB in the beginning and 257.2MB in the end (delta: 28.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-04 01:44:10,048 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.56ms. Allocated memory is still 327.2MB. Free memory was 257.2MB in the beginning and 254.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 01:44:10,048 INFO L158 Benchmark]: Boogie Preprocessor took 20.22ms. Allocated memory is still 327.2MB. Free memory was 254.2MB in the beginning and 253.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 01:44:10,049 INFO L158 Benchmark]: RCFGBuilder took 358.89ms. Allocated memory is still 327.2MB. Free memory was 253.0MB in the beginning and 235.3MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-04 01:44:10,049 INFO L158 Benchmark]: TraceAbstraction took 32114.96ms. Allocated memory was 327.2MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 235.3MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. [2023-08-04 01:44:10,050 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 327.2MB. Free memory is still 274.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 394.81ms. Allocated memory is still 327.2MB. Free memory was 285.4MB in the beginning and 257.2MB in the end (delta: 28.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.56ms. Allocated memory is still 327.2MB. Free memory was 257.2MB in the beginning and 254.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.22ms. Allocated memory is still 327.2MB. Free memory was 254.2MB in the beginning and 253.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 358.89ms. Allocated memory is still 327.2MB. Free memory was 253.0MB in the beginning and 235.3MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 32114.96ms. Allocated memory was 327.2MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 235.3MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 133]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [133] - GenericResultAtLocation [Line: 495]: Unsoundness Warning unspecified type, defaulting to int C: short [495] - GenericResultAtLocation [Line: 495]: Unsoundness Warning unspecified type, defaulting to int C: short [495] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 125 PlacesBefore, 39 PlacesAfterwards, 133 TransitionsBefore, 42 TransitionsAfterwards, 3510 CoEnabledTransitionPairs, 7 FixpointIterations, 41 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 5 ChoiceCompositions, 104 TotalNumberOfCompositions, 9588 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5208, independent: 5025, independent conditional: 0, independent unconditional: 5025, dependent: 183, dependent conditional: 0, dependent unconditional: 183, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1955, independent: 1915, independent conditional: 0, independent unconditional: 1915, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5208, independent: 3110, independent conditional: 0, independent unconditional: 3110, dependent: 143, dependent conditional: 0, dependent unconditional: 143, unknown: 1955, unknown conditional: 0, unknown unconditional: 1955] , Statistics on independence cache: Total cache size (in pairs): 229, Positive cache size: 213, Positive conditional cache size: 0, Positive unconditional cache size: 213, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 157 PlacesBefore, 61 PlacesAfterwards, 169 TransitionsBefore, 68 TransitionsAfterwards, 9420 CoEnabledTransitionPairs, 7 FixpointIterations, 41 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 5 ChoiceCompositions, 118 TotalNumberOfCompositions, 32304 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16366, independent: 16003, independent conditional: 0, independent unconditional: 16003, dependent: 363, dependent conditional: 0, dependent unconditional: 363, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4925, independent: 4843, independent conditional: 0, independent unconditional: 4843, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 16366, independent: 11160, independent conditional: 0, independent unconditional: 11160, dependent: 281, dependent conditional: 0, dependent unconditional: 281, unknown: 4925, unknown conditional: 0, unknown unconditional: 4925] , Statistics on independence cache: Total cache size (in pairs): 741, Positive cache size: 706, Positive conditional cache size: 0, Positive unconditional cache size: 706, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 157 PlacesBefore, 61 PlacesAfterwards, 169 TransitionsBefore, 68 TransitionsAfterwards, 9420 CoEnabledTransitionPairs, 7 FixpointIterations, 41 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 5 ChoiceCompositions, 118 TotalNumberOfCompositions, 32304 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13565, independent: 13202, independent conditional: 0, independent unconditional: 13202, dependent: 363, dependent conditional: 0, dependent unconditional: 363, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4757, independent: 4679, independent conditional: 0, independent unconditional: 4679, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13565, independent: 8523, independent conditional: 0, independent unconditional: 8523, dependent: 285, dependent conditional: 0, dependent unconditional: 285, unknown: 4757, unknown conditional: 0, unknown unconditional: 4757] , Statistics on independence cache: Total cache size (in pairs): 623, Positive cache size: 592, Positive conditional cache size: 0, Positive unconditional cache size: 592, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 966]: 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 for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 149 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: 3.8s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 for thread instance sufficiency with 2 thread instances CFG has 7 procedures, 177 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: 7.5s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 180 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 145 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 412 IncrementalHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 8 mSDtfsCounter, 412 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 218 SizeOfPredicates, 0 NumberOfNonLiveVariables, 549 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 66/79 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 1 thread instances CFG has 7 procedures, 177 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: 20.7s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1097 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 926 mSDsluCounter, 388 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 335 mSDsCounter, 122 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3805 IncrementalHoareTripleChecker+Invalid, 3927 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 122 mSolverCounterUnsat, 53 mSDtfsCounter, 3805 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 534 GetRequests, 446 SyntacticMatches, 21 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=744occurred in iteration=10, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 688 NumberOfCodeBlocks, 688 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 816 ConstructedInterpolants, 0 QuantifiedInterpolants, 1636 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2178 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 25 InterpolantComputations, 8 PerfectInterpolantSequences, 227/252 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! [2023-08-04 01:44:10,065 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...