/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_60-invariant_racefree_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:18:33,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:18:33,443 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:18:33,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:18:33,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:18:33,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:18:33,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:18:33,475 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:18:33,476 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:18:33,476 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:18:33,479 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:18:33,479 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:18:33,481 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:18:33,485 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:18:33,486 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:18:33,486 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:18:33,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:18:33,487 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:18:33,487 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:18:33,488 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:18:33,488 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:18:33,488 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:18:33,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:18:33,490 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:18:33,490 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:18:33,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:18:33,490 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:18:33,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:18:33,491 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:18:33,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:18:33,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:18:33,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:18:33,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:18:33,492 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:18:33,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:18:33,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:18:33,492 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:18:33,493 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:18:33,493 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:18:33,493 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:18:33,493 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:18:33,493 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:18:33,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:18:33,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:18:33,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:18:33,683 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:18:33,683 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:18:33,684 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_60-invariant_racefree_bound2.i [2023-08-03 15:18:34,764 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:18:35,002 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:18:35,003 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_60-invariant_racefree_bound2.i [2023-08-03 15:18:35,019 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24c1e4b9/8d1fb51071cc412194617e16c7b4d7b7/FLAG7881b9dc7 [2023-08-03 15:18:35,033 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24c1e4b9/8d1fb51071cc412194617e16c7b4d7b7 [2023-08-03 15:18:35,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:18:35,041 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:18:35,042 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:18:35,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:18:35,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:18:35,045 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:18:35" (1/1) ... [2023-08-03 15:18:35,046 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b87f8f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:35, skipping insertion in model container [2023-08-03 15:18:35,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:18:35" (1/1) ... [2023-08-03 15:18:35,078 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:18:35,290 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_60-invariant_racefree_bound2.i[30176,30189] [2023-08-03 15:18:35,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:18:35,331 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:18:35,356 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 15:18:35,358 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 15:18:35,379 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_60-invariant_racefree_bound2.i[30176,30189] [2023-08-03 15:18:35,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:18:35,429 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:18:35,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:35 WrapperNode [2023-08-03 15:18:35,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:18:35,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:18:35,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:18:35,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:18:35,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:35" (1/1) ... [2023-08-03 15:18:35,464 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:35" (1/1) ... [2023-08-03 15:18:35,487 INFO L138 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 141 [2023-08-03 15:18:35,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:18:35,490 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:18:35,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:18:35,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:18:35,498 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:35" (1/1) ... [2023-08-03 15:18:35,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:35" (1/1) ... [2023-08-03 15:18:35,509 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:35" (1/1) ... [2023-08-03 15:18:35,509 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:35" (1/1) ... [2023-08-03 15:18:35,514 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:35" (1/1) ... [2023-08-03 15:18:35,517 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:35" (1/1) ... [2023-08-03 15:18:35,518 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:35" (1/1) ... [2023-08-03 15:18:35,519 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:35" (1/1) ... [2023-08-03 15:18:35,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:18:35,522 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:18:35,523 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:18:35,523 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:18:35,523 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:35" (1/1) ... [2023-08-03 15:18:35,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:18:35,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:18:35,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 15:18:35,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 15:18:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 15:18:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:18:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 15:18:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:18:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:18:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 15:18:35,581 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 15:18:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:18:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:18:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:18:35,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:18:35,583 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 15:18:35,684 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:18:35,686 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:18:35,878 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:18:35,885 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:18:35,885 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-08-03 15:18:35,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:18:35 BoogieIcfgContainer [2023-08-03 15:18:35,887 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:18:35,889 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:18:35,889 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:18:35,891 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:18:35,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:18:35" (1/3) ... [2023-08-03 15:18:35,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd047de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:18:35, skipping insertion in model container [2023-08-03 15:18:35,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:35" (2/3) ... [2023-08-03 15:18:35,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd047de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:18:35, skipping insertion in model container [2023-08-03 15:18:35,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:18:35" (3/3) ... [2023-08-03 15:18:35,894 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_60-invariant_racefree_bound2.i [2023-08-03 15:18:35,919 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:18:35,926 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:18:35,927 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 15:18:35,927 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:18:35,998 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 15:18:36,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 138 transitions, 284 flow [2023-08-03 15:18:36,095 INFO L124 PetriNetUnfolderBase]: 33/193 cut-off events. [2023-08-03 15:18:36,095 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 15:18:36,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 193 events. 33/193 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 633 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-08-03 15:18:36,101 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 138 transitions, 284 flow [2023-08-03 15:18:36,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 133 transitions, 271 flow [2023-08-03 15:18:36,109 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:18:36,116 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 133 transitions, 271 flow [2023-08-03 15:18:36,118 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 133 transitions, 271 flow [2023-08-03 15:18:36,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 133 transitions, 271 flow [2023-08-03 15:18:36,150 INFO L124 PetriNetUnfolderBase]: 32/188 cut-off events. [2023-08-03 15:18:36,150 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:18:36,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 188 events. 32/188 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 619 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-08-03 15:18:36,156 INFO L119 LiptonReduction]: Number of co-enabled transitions 5490 [2023-08-03 15:18:38,438 INFO L134 LiptonReduction]: Checked pairs total: 14551 [2023-08-03 15:18:38,438 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-03 15:18:38,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:18:38,456 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;@765a712b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:18:38,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 15:18:38,460 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:18:38,460 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2023-08-03 15:18:38,461 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:18:38,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:38,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 15:18:38,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:18:38,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:38,466 INFO L85 PathProgramCache]: Analyzing trace with hash 512707676, now seen corresponding path program 1 times [2023-08-03 15:18:38,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:38,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911876931] [2023-08-03 15:18:38,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:38,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:18:38,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:38,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911876931] [2023-08-03 15:18:38,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911876931] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:18:38,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:18:38,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:18:38,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689117604] [2023-08-03 15:18:38,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:18:38,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:18:38,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:38,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:18:38,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:18:38,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-08-03 15:18:38,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 62 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:38,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:38,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-08-03 15:18:38,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:38,777 INFO L124 PetriNetUnfolderBase]: 211/547 cut-off events. [2023-08-03 15:18:38,778 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:18:38,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1005 conditions, 547 events. 211/547 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2758 event pairs, 0 based on Foata normal form. 88/558 useless extension candidates. Maximal degree in co-relation 964. Up to 421 conditions per place. [2023-08-03 15:18:38,782 INFO L140 encePairwiseOnDemand]: 213/235 looper letters, 45 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-08-03 15:18:38,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 215 flow [2023-08-03 15:18:38,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:18:38,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:18:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 406 transitions. [2023-08-03 15:18:38,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5758865248226951 [2023-08-03 15:18:38,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 406 transitions. [2023-08-03 15:18:38,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 406 transitions. [2023-08-03 15:18:38,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:38,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 406 transitions. [2023-08-03 15:18:38,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:38,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:38,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:38,829 INFO L175 Difference]: Start difference. First operand has 46 places, 62 transitions, 129 flow. Second operand 3 states and 406 transitions. [2023-08-03 15:18:38,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 215 flow [2023-08-03 15:18:38,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:18:38,834 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 97 flow [2023-08-03 15:18:38,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-08-03 15:18:38,841 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2023-08-03 15:18:38,841 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 97 flow [2023-08-03 15:18:38,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:38,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:38,842 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:18:38,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:18:38,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:18:38,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:38,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1289063369, now seen corresponding path program 1 times [2023-08-03 15:18:38,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:38,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335846215] [2023-08-03 15:18:38,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:38,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:18:38,884 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:18:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:18:38,927 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:18:38,927 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:18:38,928 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 15:18:38,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 15:18:38,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 15:18:38,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 15:18:38,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:18:38,931 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 15:18:38,933 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:18:38,933 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:18:38,962 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 15:18:38,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 185 transitions, 388 flow [2023-08-03 15:18:38,995 INFO L124 PetriNetUnfolderBase]: 57/319 cut-off events. [2023-08-03 15:18:38,996 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 15:18:38,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 319 events. 57/319 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1201 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 195. Up to 9 conditions per place. [2023-08-03 15:18:38,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 185 transitions, 388 flow [2023-08-03 15:18:39,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 185 transitions, 388 flow [2023-08-03 15:18:39,000 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:18:39,001 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 185 transitions, 388 flow [2023-08-03 15:18:39,001 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 185 transitions, 388 flow [2023-08-03 15:18:39,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 185 transitions, 388 flow [2023-08-03 15:18:39,032 INFO L124 PetriNetUnfolderBase]: 57/319 cut-off events. [2023-08-03 15:18:39,032 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 15:18:39,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 319 events. 57/319 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1201 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 195. Up to 9 conditions per place. [2023-08-03 15:18:39,043 INFO L119 LiptonReduction]: Number of co-enabled transitions 16020 [2023-08-03 15:18:41,344 INFO L134 LiptonReduction]: Checked pairs total: 45797 [2023-08-03 15:18:41,344 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-03 15:18:41,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:18:41,347 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;@765a712b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:18:41,347 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 15:18:41,350 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:18:41,350 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2023-08-03 15:18:41,350 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:18:41,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:41,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 15:18:41,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 15:18:41,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:41,351 INFO L85 PathProgramCache]: Analyzing trace with hash 853260580, now seen corresponding path program 1 times [2023-08-03 15:18:41,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:41,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360733848] [2023-08-03 15:18:41,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:41,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:41,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:18:41,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:41,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360733848] [2023-08-03 15:18:41,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360733848] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:18:41,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:18:41,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:18:41,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475634395] [2023-08-03 15:18:41,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:18:41,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:18:41,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:41,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:18:41,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:18:41,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 310 [2023-08-03 15:18:41,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 95 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:41,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:41,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 310 [2023-08-03 15:18:41,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:42,136 INFO L124 PetriNetUnfolderBase]: 5106/8979 cut-off events. [2023-08-03 15:18:42,137 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-08-03 15:18:42,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16936 conditions, 8979 events. 5106/8979 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 67671 event pairs, 2208 based on Foata normal form. 1727/9079 useless extension candidates. Maximal degree in co-relation 2572. Up to 7850 conditions per place. [2023-08-03 15:18:42,188 INFO L140 encePairwiseOnDemand]: 281/310 looper letters, 58 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-03 15:18:42,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 83 transitions, 304 flow [2023-08-03 15:18:42,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:18:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:18:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-08-03 15:18:42,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709677419354838 [2023-08-03 15:18:42,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-08-03 15:18:42,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-08-03 15:18:42,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:42,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-08-03 15:18:42,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:42,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:42,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:42,195 INFO L175 Difference]: Start difference. First operand has 70 places, 95 transitions, 208 flow. Second operand 3 states and 531 transitions. [2023-08-03 15:18:42,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 83 transitions, 304 flow [2023-08-03 15:18:42,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 83 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:18:42,198 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 168 flow [2023-08-03 15:18:42,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2023-08-03 15:18:42,199 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 3 predicate places. [2023-08-03 15:18:42,199 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 168 flow [2023-08-03 15:18:42,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:42,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:42,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:18:42,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 15:18:42,200 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 15:18:42,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:42,201 INFO L85 PathProgramCache]: Analyzing trace with hash -438786581, now seen corresponding path program 1 times [2023-08-03 15:18:42,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:42,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340992849] [2023-08-03 15:18:42,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:42,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:18:42,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:42,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340992849] [2023-08-03 15:18:42,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340992849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:18:42,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:18:42,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:18:42,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72794527] [2023-08-03 15:18:42,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:18:42,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:18:42,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:42,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:18:42,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:18:42,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 310 [2023-08-03 15:18:42,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:42,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:42,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 310 [2023-08-03 15:18:42,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:43,296 INFO L124 PetriNetUnfolderBase]: 7094/12509 cut-off events. [2023-08-03 15:18:43,296 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2023-08-03 15:18:43,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24099 conditions, 12509 events. 7094/12509 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 96942 event pairs, 3492 based on Foata normal form. 0/10628 useless extension candidates. Maximal degree in co-relation 24053. Up to 7633 conditions per place. [2023-08-03 15:18:43,346 INFO L140 encePairwiseOnDemand]: 293/310 looper letters, 78 selfloop transitions, 10 changer transitions 0/106 dead transitions. [2023-08-03 15:18:43,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 106 transitions, 422 flow [2023-08-03 15:18:43,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:18:43,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:18:43,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2023-08-03 15:18:43,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546236559139785 [2023-08-03 15:18:43,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2023-08-03 15:18:43,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2023-08-03 15:18:43,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:43,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2023-08-03 15:18:43,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:43,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:43,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:43,353 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 168 flow. Second operand 3 states and 508 transitions. [2023-08-03 15:18:43,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 106 transitions, 422 flow [2023-08-03 15:18:43,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 106 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:18:43,357 INFO L231 Difference]: Finished difference. Result has 76 places, 78 transitions, 252 flow [2023-08-03 15:18:43,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=76, PETRI_TRANSITIONS=78} [2023-08-03 15:18:43,358 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 6 predicate places. [2023-08-03 15:18:43,358 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 252 flow [2023-08-03 15:18:43,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:43,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:43,359 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:18:43,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 15:18:43,359 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 15:18:43,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:43,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1742642449, now seen corresponding path program 1 times [2023-08-03 15:18:43,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:43,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123299569] [2023-08-03 15:18:43,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:43,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:43,444 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:18:43,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:43,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123299569] [2023-08-03 15:18:43,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123299569] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:18:43,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605410187] [2023-08-03 15:18:43,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:43,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:18:43,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:18:43,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:18:43,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 15:18:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:43,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:18:43,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:18:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:18:43,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:18:43,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605410187] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:18:43,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:18:43,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 15:18:43,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710186756] [2023-08-03 15:18:43,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:18:43,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:18:43,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:43,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:18:43,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:18:43,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 310 [2023-08-03 15:18:43,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 252 flow. Second operand has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:43,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:43,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 310 [2023-08-03 15:18:43,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:44,466 INFO L124 PetriNetUnfolderBase]: 6290/11530 cut-off events. [2023-08-03 15:18:44,467 INFO L125 PetriNetUnfolderBase]: For 3352/3817 co-relation queries the response was YES. [2023-08-03 15:18:44,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25620 conditions, 11530 events. 6290/11530 cut-off events. For 3352/3817 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 92091 event pairs, 3744 based on Foata normal form. 187/10586 useless extension candidates. Maximal degree in co-relation 19683. Up to 9802 conditions per place. [2023-08-03 15:18:44,514 INFO L140 encePairwiseOnDemand]: 306/310 looper letters, 62 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2023-08-03 15:18:44,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 91 transitions, 414 flow [2023-08-03 15:18:44,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:18:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:18:44,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 782 transitions. [2023-08-03 15:18:44,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045161290322581 [2023-08-03 15:18:44,517 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 782 transitions. [2023-08-03 15:18:44,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 782 transitions. [2023-08-03 15:18:44,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:44,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 782 transitions. [2023-08-03 15:18:44,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.4) internal successors, (782), 5 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:44,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 310.0) internal successors, (1860), 6 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:44,522 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 310.0) internal successors, (1860), 6 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:44,522 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 252 flow. Second operand 5 states and 782 transitions. [2023-08-03 15:18:44,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 91 transitions, 414 flow [2023-08-03 15:18:44,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 390 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 15:18:44,541 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 243 flow [2023-08-03 15:18:44,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2023-08-03 15:18:44,542 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 7 predicate places. [2023-08-03 15:18:44,542 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 243 flow [2023-08-03 15:18:44,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:44,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:44,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:18:44,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 15:18:44,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:18:44,752 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 15:18:44,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:44,753 INFO L85 PathProgramCache]: Analyzing trace with hash -665719349, now seen corresponding path program 1 times [2023-08-03 15:18:44,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:44,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427097207] [2023-08-03 15:18:44,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:44,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:18:44,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:44,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427097207] [2023-08-03 15:18:44,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427097207] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:18:44,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797568069] [2023-08-03 15:18:44,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:44,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:18:44,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:18:44,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:18:44,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 15:18:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:44,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 15:18:44,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:18:44,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:18:44,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:18:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:18:44,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797568069] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:18:44,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:18:44,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 15:18:44,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546897993] [2023-08-03 15:18:44,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:18:44,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:18:44,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:44,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:18:44,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:18:44,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 310 [2023-08-03 15:18:44,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:44,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:44,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 310 [2023-08-03 15:18:44,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:45,911 INFO L124 PetriNetUnfolderBase]: 6234/11194 cut-off events. [2023-08-03 15:18:45,912 INFO L125 PetriNetUnfolderBase]: For 2014/2296 co-relation queries the response was YES. [2023-08-03 15:18:45,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24288 conditions, 11194 events. 6234/11194 cut-off events. For 2014/2296 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 87513 event pairs, 3720 based on Foata normal form. 85/9733 useless extension candidates. Maximal degree in co-relation 20263. Up to 9712 conditions per place. [2023-08-03 15:18:45,952 INFO L140 encePairwiseOnDemand]: 307/310 looper letters, 62 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2023-08-03 15:18:45,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 90 transitions, 399 flow [2023-08-03 15:18:45,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 15:18:45,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 15:18:45,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 637 transitions. [2023-08-03 15:18:45,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137096774193548 [2023-08-03 15:18:45,954 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 637 transitions. [2023-08-03 15:18:45,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 637 transitions. [2023-08-03 15:18:45,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:45,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 637 transitions. [2023-08-03 15:18:45,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.25) internal successors, (637), 4 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:45,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:45,959 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:45,959 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 243 flow. Second operand 4 states and 637 transitions. [2023-08-03 15:18:45,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 90 transitions, 399 flow [2023-08-03 15:18:45,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 90 transitions, 394 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 15:18:45,962 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 236 flow [2023-08-03 15:18:45,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2023-08-03 15:18:45,963 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2023-08-03 15:18:45,963 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 236 flow [2023-08-03 15:18:45,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:45,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:45,964 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:18:45,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 15:18:46,169 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,SelfDestructingSolverStorable5 [2023-08-03 15:18:46,169 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 15:18:46,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:46,169 INFO L85 PathProgramCache]: Analyzing trace with hash -2084369117, now seen corresponding path program 1 times [2023-08-03 15:18:46,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:46,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975480249] [2023-08-03 15:18:46,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:46,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 15:18:46,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:46,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975480249] [2023-08-03 15:18:46,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975480249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:18:46,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:18:46,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:18:46,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645325193] [2023-08-03 15:18:46,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:18:46,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:18:46,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:46,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:18:46,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:18:46,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 310 [2023-08-03 15:18:46,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:46,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:46,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 310 [2023-08-03 15:18:46,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:47,224 INFO L124 PetriNetUnfolderBase]: 8129/14498 cut-off events. [2023-08-03 15:18:47,224 INFO L125 PetriNetUnfolderBase]: For 2169/2370 co-relation queries the response was YES. [2023-08-03 15:18:47,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31310 conditions, 14498 events. 8129/14498 cut-off events. For 2169/2370 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 118514 event pairs, 3262 based on Foata normal form. 175/12759 useless extension candidates. Maximal degree in co-relation 27386. Up to 10005 conditions per place. [2023-08-03 15:18:47,294 INFO L140 encePairwiseOnDemand]: 293/310 looper letters, 85 selfloop transitions, 17 changer transitions 3/127 dead transitions. [2023-08-03 15:18:47,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 127 transitions, 599 flow [2023-08-03 15:18:47,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:18:47,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:18:47,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2023-08-03 15:18:47,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258064516129032 [2023-08-03 15:18:47,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2023-08-03 15:18:47,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2023-08-03 15:18:47,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:47,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2023-08-03 15:18:47,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:47,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:47,299 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:47,299 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 236 flow. Second operand 3 states and 489 transitions. [2023-08-03 15:18:47,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 127 transitions, 599 flow [2023-08-03 15:18:47,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 127 transitions, 589 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 15:18:47,303 INFO L231 Difference]: Finished difference. Result has 78 places, 91 transitions, 337 flow [2023-08-03 15:18:47,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=78, PETRI_TRANSITIONS=91} [2023-08-03 15:18:47,304 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2023-08-03 15:18:47,304 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 91 transitions, 337 flow [2023-08-03 15:18:47,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:47,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:47,304 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:18:47,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 15:18:47,305 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 15:18:47,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:47,305 INFO L85 PathProgramCache]: Analyzing trace with hash -320022435, now seen corresponding path program 1 times [2023-08-03 15:18:47,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:47,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641440043] [2023-08-03 15:18:47,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:47,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 15:18:47,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:47,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641440043] [2023-08-03 15:18:47,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641440043] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:18:47,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:18:47,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:18:47,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449422187] [2023-08-03 15:18:47,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:18:47,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:18:47,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:47,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:18:47,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:18:47,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 310 [2023-08-03 15:18:47,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 91 transitions, 337 flow. Second operand has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:47,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:47,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 310 [2023-08-03 15:18:47,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:48,345 INFO L124 PetriNetUnfolderBase]: 7408/13014 cut-off events. [2023-08-03 15:18:48,346 INFO L125 PetriNetUnfolderBase]: For 4665/4881 co-relation queries the response was YES. [2023-08-03 15:18:48,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34285 conditions, 13014 events. 7408/13014 cut-off events. For 4665/4881 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 102531 event pairs, 2360 based on Foata normal form. 92/11549 useless extension candidates. Maximal degree in co-relation 29654. Up to 7127 conditions per place. [2023-08-03 15:18:48,392 INFO L140 encePairwiseOnDemand]: 298/310 looper letters, 148 selfloop transitions, 19 changer transitions 3/189 dead transitions. [2023-08-03 15:18:48,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 189 transitions, 1039 flow [2023-08-03 15:18:48,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 15:18:48,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 15:18:48,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1093 transitions. [2023-08-03 15:18:48,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036866359447004 [2023-08-03 15:18:48,395 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1093 transitions. [2023-08-03 15:18:48,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1093 transitions. [2023-08-03 15:18:48,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:48,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1093 transitions. [2023-08-03 15:18:48,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 156.14285714285714) internal successors, (1093), 7 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:48,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:48,401 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:48,401 INFO L175 Difference]: Start difference. First operand has 78 places, 91 transitions, 337 flow. Second operand 7 states and 1093 transitions. [2023-08-03 15:18:48,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 189 transitions, 1039 flow [2023-08-03 15:18:48,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 189 transitions, 996 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:18:48,411 INFO L231 Difference]: Finished difference. Result has 84 places, 97 transitions, 393 flow [2023-08-03 15:18:48,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=393, PETRI_PLACES=84, PETRI_TRANSITIONS=97} [2023-08-03 15:18:48,412 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 14 predicate places. [2023-08-03 15:18:48,412 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 97 transitions, 393 flow [2023-08-03 15:18:48,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:48,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:48,412 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:18:48,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 15:18:48,413 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 15:18:48,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:48,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1004094842, now seen corresponding path program 1 times [2023-08-03 15:18:48,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:48,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355580311] [2023-08-03 15:18:48,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:48,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 15:18:48,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:48,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355580311] [2023-08-03 15:18:48,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355580311] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:18:48,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:18:48,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:18:48,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127441346] [2023-08-03 15:18:48,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:18:48,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:18:48,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:48,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:18:48,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:18:48,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 310 [2023-08-03 15:18:48,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 97 transitions, 393 flow. Second operand has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:48,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:48,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 310 [2023-08-03 15:18:48,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:49,878 INFO L124 PetriNetUnfolderBase]: 9627/17215 cut-off events. [2023-08-03 15:18:49,878 INFO L125 PetriNetUnfolderBase]: For 9220/9338 co-relation queries the response was YES. [2023-08-03 15:18:49,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44997 conditions, 17215 events. 9627/17215 cut-off events. For 9220/9338 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 140952 event pairs, 2989 based on Foata normal form. 613/16707 useless extension candidates. Maximal degree in co-relation 40053. Up to 7869 conditions per place. [2023-08-03 15:18:49,941 INFO L140 encePairwiseOnDemand]: 290/310 looper letters, 194 selfloop transitions, 33 changer transitions 26/271 dead transitions. [2023-08-03 15:18:49,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 271 transitions, 1533 flow [2023-08-03 15:18:49,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-03 15:18:49,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-03 15:18:49,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1545 transitions. [2023-08-03 15:18:49,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49838709677419357 [2023-08-03 15:18:49,945 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1545 transitions. [2023-08-03 15:18:49,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1545 transitions. [2023-08-03 15:18:49,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:49,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1545 transitions. [2023-08-03 15:18:49,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 154.5) internal successors, (1545), 10 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:49,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 310.0) internal successors, (3410), 11 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:49,955 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 310.0) internal successors, (3410), 11 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:49,955 INFO L175 Difference]: Start difference. First operand has 84 places, 97 transitions, 393 flow. Second operand 10 states and 1545 transitions. [2023-08-03 15:18:49,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 271 transitions, 1533 flow [2023-08-03 15:18:49,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 271 transitions, 1527 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:18:49,963 INFO L231 Difference]: Finished difference. Result has 94 places, 114 transitions, 611 flow [2023-08-03 15:18:49,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=611, PETRI_PLACES=94, PETRI_TRANSITIONS=114} [2023-08-03 15:18:49,963 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 24 predicate places. [2023-08-03 15:18:49,963 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 114 transitions, 611 flow [2023-08-03 15:18:49,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:49,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:49,964 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] [2023-08-03 15:18:49,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 15:18:49,964 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 15:18:49,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:49,965 INFO L85 PathProgramCache]: Analyzing trace with hash -743334677, now seen corresponding path program 1 times [2023-08-03 15:18:49,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:49,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868287062] [2023-08-03 15:18:49,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:49,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:50,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:18:50,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:50,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868287062] [2023-08-03 15:18:50,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868287062] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:18:50,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:18:50,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:18:50,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329662945] [2023-08-03 15:18:50,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:18:50,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:18:50,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:50,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:18:50,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:18:50,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 310 [2023-08-03 15:18:50,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 114 transitions, 611 flow. Second operand has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:50,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:50,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 310 [2023-08-03 15:18:50,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:50,237 INFO L124 PetriNetUnfolderBase]: 128/440 cut-off events. [2023-08-03 15:18:50,237 INFO L125 PetriNetUnfolderBase]: For 309/311 co-relation queries the response was YES. [2023-08-03 15:18:50,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1158 conditions, 440 events. 128/440 cut-off events. For 309/311 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1991 event pairs, 26 based on Foata normal form. 39/437 useless extension candidates. Maximal degree in co-relation 1144. Up to 245 conditions per place. [2023-08-03 15:18:50,238 INFO L140 encePairwiseOnDemand]: 303/310 looper letters, 0 selfloop transitions, 0 changer transitions 51/51 dead transitions. [2023-08-03 15:18:50,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 51 transitions, 294 flow [2023-08-03 15:18:50,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 15:18:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 15:18:50,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 595 transitions. [2023-08-03 15:18:50,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4798387096774194 [2023-08-03 15:18:50,240 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 595 transitions. [2023-08-03 15:18:50,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 595 transitions. [2023-08-03 15:18:50,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:50,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 595 transitions. [2023-08-03 15:18:50,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:50,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:50,245 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:50,245 INFO L175 Difference]: Start difference. First operand has 94 places, 114 transitions, 611 flow. Second operand 4 states and 595 transitions. [2023-08-03 15:18:50,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 51 transitions, 294 flow [2023-08-03 15:18:50,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 51 transitions, 241 flow, removed 9 selfloop flow, removed 13 redundant places. [2023-08-03 15:18:50,247 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-08-03 15:18:50,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-08-03 15:18:50,247 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -17 predicate places. [2023-08-03 15:18:50,248 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-08-03 15:18:50,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:50,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-03 15:18:50,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-03 15:18:50,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-03 15:18:50,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-03 15:18:50,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 15:18:50,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 15:18:50,249 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:18:50,252 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:18:50,252 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:18:50,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:18:50 BasicIcfg [2023-08-03 15:18:50,255 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:18:50,256 INFO L158 Benchmark]: Toolchain (without parser) took 15214.85ms. Allocated memory was 343.9MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 299.0MB in the beginning and 572.8MB in the end (delta: -273.8MB). Peak memory consumption was 924.3MB. Max. memory is 16.0GB. [2023-08-03 15:18:50,256 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 343.9MB. Free memory is still 300.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:18:50,256 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.61ms. Allocated memory is still 343.9MB. Free memory was 299.0MB in the beginning and 278.8MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 15:18:50,256 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.16ms. Allocated memory is still 343.9MB. Free memory was 278.8MB in the beginning and 276.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:18:50,257 INFO L158 Benchmark]: Boogie Preprocessor took 31.30ms. Allocated memory is still 343.9MB. Free memory was 276.7MB in the beginning and 274.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:18:50,257 INFO L158 Benchmark]: RCFGBuilder took 364.65ms. Allocated memory is still 343.9MB. Free memory was 274.9MB in the beginning and 259.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-03 15:18:50,257 INFO L158 Benchmark]: TraceAbstraction took 14366.57ms. Allocated memory was 343.9MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 258.5MB in the beginning and 572.8MB in the end (delta: -314.3MB). Peak memory consumption was 884.5MB. Max. memory is 16.0GB. [2023-08-03 15:18:50,258 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 343.9MB. Free memory is still 300.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 388.61ms. Allocated memory is still 343.9MB. Free memory was 299.0MB in the beginning and 278.8MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 58.16ms. Allocated memory is still 343.9MB. Free memory was 278.8MB in the beginning and 276.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.30ms. Allocated memory is still 343.9MB. Free memory was 276.7MB in the beginning and 274.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 364.65ms. Allocated memory is still 343.9MB. Free memory was 274.9MB in the beginning and 259.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 14366.57ms. Allocated memory was 343.9MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 258.5MB in the beginning and 572.8MB in the end (delta: -314.3MB). Peak memory consumption was 884.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 115 PlacesBefore, 46 PlacesAfterwards, 133 TransitionsBefore, 62 TransitionsAfterwards, 5490 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 2 ChoiceCompositions, 97 TotalNumberOfCompositions, 14551 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5650, independent: 5316, independent conditional: 0, independent unconditional: 5316, dependent: 334, dependent conditional: 0, dependent unconditional: 334, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2706, independent: 2654, independent conditional: 0, independent unconditional: 2654, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5650, independent: 2662, independent conditional: 0, independent unconditional: 2662, dependent: 282, dependent conditional: 0, dependent unconditional: 282, unknown: 2706, unknown conditional: 0, unknown unconditional: 2706] , Statistics on independence cache: Total cache size (in pairs): 268, Positive cache size: 235, Positive conditional cache size: 0, Positive unconditional cache size: 235, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 157 PlacesBefore, 70 PlacesAfterwards, 185 TransitionsBefore, 95 TransitionsAfterwards, 16020 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 68 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 29 ConcurrentYvCompositions, 3 ChoiceCompositions, 125 TotalNumberOfCompositions, 45797 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12951, independent: 12428, independent conditional: 0, independent unconditional: 12428, dependent: 523, dependent conditional: 0, dependent unconditional: 523, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7293, independent: 7208, independent conditional: 0, independent unconditional: 7208, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12951, independent: 5220, independent conditional: 0, independent unconditional: 5220, dependent: 438, dependent conditional: 0, dependent unconditional: 438, unknown: 7293, unknown conditional: 0, unknown unconditional: 7293] , Statistics on independence cache: Total cache size (in pairs): 586, Positive cache size: 530, Positive conditional cache size: 0, Positive unconditional cache size: 530, Negative cache size: 56, Negative conditional cache size: 0, Negative unconditional cache size: 56, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 691]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 691]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 153 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68 IncrementalHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 68 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 189 locations, 5 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: 11.3s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 836 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 584 mSDsluCounter, 183 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 105 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1995 IncrementalHoareTripleChecker+Invalid, 2092 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 78 mSDtfsCounter, 1995 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred in iteration=7, InterpolantAutomatonStates: 39, 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, 0.6s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 151 ConstructedInterpolants, 0 QuantifiedInterpolants, 495 SizeOfPredicates, 0 NumberOfNonLiveVariables, 252 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 35/43 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 15:18:50,273 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...